Merge branch '1.11' into 1.11.2

0c36022 Merge branch '1.10.2' into 1.11
325d041 Merge branch '1.9.4' into 1.10.2
d9d57e2 Merge branch '1.8.9' into 1.9.4
24c58cb Merge branch '1.8' into 1.8.9
1ffeb01 Update jGui
c122d30 Merge branch '1.8-path-segments' into 1.8
27fd25a Fix crash when server responds with garbage to language query (fixes #51)
db6b0ff Fix / by 0 when two spectator keyframes are closer than 50ms (fixes #60)
d61d0ac Fix hand of invisible spectated player being visible (fixes #59)
f7460f9 Re-enable time path after path playback (fixes #55)
bdbffd5 Add Catmull-Rom spline interpolator to simplepathing
5cbfd28 Generate interpolator settings from InterpolatorType enum
6095aef Fix loading and storing of default interpolator with settings
3f52336 Revert "Fix AbstractMethodError caused by FG2.0 not supporting lambdas (fixes #58)"
c6293bc Update to FG2.2
c8126ed Merge '1.8' into 1.8.9
64898ce Fix NPE when saving recorded resource pack
70e3e54 Fix AbstractMethodError caused by FG2.0 not supporting lambdas (fixes #58)
3f2b3d6 Fix replacing source file in Replay Editor (fixes #57)
d2def94 Fix duration of replays corrupted because of JVM/OS crash
2c64030 Refactor simple pathing timeline logic into dedicated class with unit tests Fix logic for user-set interpolators
4deb374 Enable validation on focus change for all number input fields
5302bca Fix id and text of Replay Editor button in docs
057edcc Manually inject root cert for cross-signed LetsEncrypt cert in requests
cd16211 Register new Property to imply that the path segment following a keyframe has a user-set interpolator instead of the default Modified Keyframe GUI to allow for custom Path interpolator

.drone.yml

@@ -7,7 +7,7 @@ pipeline:
     commands:
       - curl --fail --create-dirs -o $HOME/.gradle/init.d/mirror.gradle https://maven.johni0702.de/config/gradle
       - curl --fail --create-dirs -o $HOME/.m2/settings.xml https://maven.johni0702.de/config/maven
-      - ./gradlew setupCIWorkspace
+      - JAVA_OPTS=-Xmx1516M ./gradlew setupDecompWorkspace
       - ./gradlew :build
   archive:
     image: plugins/s3

.drone.yml.sig

@@ -1 +1 @@
-eyJhbGciOiJIUzI1NiJ9.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.riE6lhwfdNUhI7LO2SxEKFOjzjaX40ne7Ae9gyP75KE
+eyJhbGciOiJIUzI1NiJ9.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.nzPW0_TpMIjnFZZ5Ci439QDKlaDo1a3DCH-VCYUgpx8

build.gradle

@@ -19,8 +19,8 @@ buildscript {
         }
     }
     dependencies {
-        classpath 'net.minecraftforge.gradle:ForgeGradle:2.1-SNAPSHOT'
-        classpath 'org.spongepowered:mixingradle:0.3-SNAPSHOT'
+        classpath 'net.minecraftforge.gradle:ForgeGradle:2.2-SNAPSHOT'
+        classpath 'org.spongepowered:mixingradle:0.4-SNAPSHOT'
     }
 }
 
@@ -36,9 +36,9 @@ archivesBaseName = "replaymod"
 
 minecraft {
     coreMod = 'com.replaymod.core.LoadingPlugin'
-    version = '1.8.9-11.15.1.1722'
+    version = '1.11.2-13.20.0.2216'
     runDir = "eclipse"
-    mappings = "stable_22"
+    mappings = "snapshot_20161220"
     replace '@MOD_VERSION@', project.version
     replace '@MC_VERSION@', project.minecraft.version
 }
@@ -138,6 +138,7 @@ jar {
     manifest {
          attributes 'TweakClass': 'org.spongepowered.asm.launch.MixinTweaker',
                  'TweakOrder': '0',
+                 'FMLCorePluginContainsFMLMod': 'true',
                  'FMLAT': 'replaymod_at.cfg'
 	}
 }

docs/content.md

@@ -56,7 +56,7 @@ Please use [Optifine](https://optifine.net/) instead.
 
 ### Custom Main Menu [custom-main-menu]
 The [Custom Main Menu](https://mods.curse.com/mc-mods/minecraft/226406-custom-main-menu) mod is often used in mod packs to customize their Main Menu with a button layout fitting the background image, links to their website / bug tracker and similar.
-If you are familiar with it, the button ids for the Replay Mod are: **17890234** (text: `replaymod.gui.replayviewer`), **17890235** (text: `replaymod.gui.replayviewer`) and **17890236** (text: `replaymod.gui.replaycenter`)
+If you are familiar with it, the button ids for the Replay Mod are: **17890234** (text: `replaymod.gui.replayviewer`), **17890237** (text: `replaymod.gui.replayeditor`) and **17890236** (text: `replaymod.gui.replaycenter`)
 
 Due to the nature of this Custom Main Menu mod, buttons added to the Main Menu by 3rd party mods like the **Replay Mod** will not show up by default.  
 Thus, to access the Replay Viewer/Editor/Center, you need to manually configure the position for those buttons.  

src/main/java/com/replaymod/compat/ReplayModCompat.java

@@ -2,7 +2,7 @@ package com.replaymod.compat;
 
 import com.replaymod.compat.optifine.DisableFastRender;
 import com.replaymod.compat.shaders.ShaderBeginRender;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.eventhandler.EventBus;
@@ -16,7 +16,7 @@ public class ReplayModCompat {
 
     @Mod.EventHandler
     public void init(FMLInitializationEvent event) {
-        EventBus bus = FMLCommonHandler.instance().bus();
+        EventBus bus = MinecraftForge.EVENT_BUS;
         bus.register(new ShaderBeginRender());
         bus.register(new DisableFastRender());
     }

src/main/java/com/replaymod/core/KeyBindingRegistry.java

@@ -16,7 +16,6 @@ import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.concurrent.Callable;
 
 public class KeyBindingRegistry {
     private Map<String, KeyBinding> keyBindings = new HashMap<String, KeyBinding>();
@@ -86,7 +85,7 @@ public class KeyBindingRegistry {
                 CrashReport crashReport = CrashReport.makeCrashReport(cause, "Handling Key Binding");
                 CrashReportCategory category = crashReport.makeCategory("Key Binding");
                 category.addCrashSection("Key Binding", keyBinding);
-                category.addCrashSectionCallable("Handler", runnable::toString);
+                category.setDetail("Handler", runnable::toString);
                 throw new ReportedException(crashReport);
             }
         }
@@ -101,12 +100,7 @@ public class KeyBindingRegistry {
                 CrashReport crashReport = CrashReport.makeCrashReport(cause, "Handling Raw Key Binding");
                 CrashReportCategory category = crashReport.makeCategory("Key Binding");
                 category.addCrashSection("Key Code", keyCode);
-                category.addCrashSectionCallable("Handler", new Callable() {
-                    @Override
-                    public Object call() throws Exception {
-                        return runnable;
-                    }
-                });
+                category.setDetail("Handler", runnable::toString);
                 throw new ReportedException(crashReport);
             }
         }

src/main/java/com/replaymod/core/ReplayMod.java

@@ -6,7 +6,6 @@ import com.replaymod.core.gui.GuiReplaySettings;
 import com.replaymod.core.gui.RestoreReplayGui;
 import com.replaymod.core.handler.MainMenuHandler;
 import com.replaymod.core.utils.OpenGLUtils;
-import com.replaymod.render.utils.SoundHandler;
 import com.replaymod.replaystudio.util.I18n;
 import de.johni0702.minecraft.gui.container.GuiScreen;
 import lombok.Getter;
@@ -14,15 +13,11 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.settings.GameSettings;
 import net.minecraft.crash.CrashReport;
 import net.minecraft.crash.CrashReportCategory;
-import net.minecraft.util.ChatComponentText;
-import net.minecraft.util.ChatComponentTranslation;
-import net.minecraft.util.ChatStyle;
-import net.minecraft.util.EnumChatFormatting;
-import net.minecraft.util.IChatComponent;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.text.*;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.config.Configuration;
 import net.minecraftforge.fml.client.FMLClientHandler;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.Loader;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.Mod.EventHandler;
@@ -72,8 +67,6 @@ public class ReplayMod {
 
     @Deprecated
     public static Configuration config;
-    @Deprecated
-    public static SoundHandler soundHandler = new SoundHandler();
 
     private final KeyBindingRegistry keyBindingRegistry = new KeyBindingRegistry();
     private final SettingsRegistry settingsRegistry = new SettingsRegistry();
@@ -116,7 +109,7 @@ public class ReplayMod {
 
         new MainMenuHandler().register();
 
-        FMLCommonHandler.instance().bus().register(keyBindingRegistry);
+        MinecraftForge.EVENT_BUS.register(keyBindingRegistry);
 
         getKeyBindingRegistry().registerKeyBinding("replaymod.input.settings", 0, () -> {
             new GuiReplaySettings(null, settingsRegistry).display();
@@ -197,13 +190,13 @@ public class ReplayMod {
     private void printToChat(boolean warning, String message, Object... args) {
         if (getSettingsRegistry().get(Setting.NOTIFICATIONS)) {
             // Some nostalgia: "§8[§6Replay Mod§8]§r Your message goes here"
-            ChatStyle coloredDarkGray = new ChatStyle().setColor(EnumChatFormatting.DARK_GRAY);
-            ChatStyle coloredGold = new ChatStyle().setColor(EnumChatFormatting.GOLD);
-            IChatComponent text = new ChatComponentText("[").setChatStyle(coloredDarkGray)
-                    .appendSibling(new ChatComponentTranslation("replaymod.title").setChatStyle(coloredGold))
-                    .appendSibling(new ChatComponentText("] "))
-                    .appendSibling(new ChatComponentTranslation(message, args).setChatStyle(new ChatStyle()
-                            .setColor(warning ? EnumChatFormatting.RED : EnumChatFormatting.DARK_GREEN)));
+            Style coloredDarkGray = new Style().setColor(TextFormatting.DARK_GRAY);
+            Style coloredGold = new Style().setColor(TextFormatting.GOLD);
+            ITextComponent text = new TextComponentString("[").setStyle(coloredDarkGray)
+                    .appendSibling(new TextComponentTranslation("replaymod.title").setStyle(coloredGold))
+                    .appendSibling(new TextComponentString("] "))
+                    .appendSibling(new TextComponentTranslation(message, args).setStyle(new Style()
+                            .setColor(warning ? TextFormatting.RED : TextFormatting.DARK_GREEN)));
             // Send message to chat GUI
             // The ingame GUI is initialized at startup, therefore this is possible before the client is connected
             mc.ingameGUI.getChatGUI().printChatMessage(text);

src/main/java/com/replaymod/core/SettingsRegistry.java

@@ -2,8 +2,8 @@ package com.replaymod.core;
 
 import com.replaymod.core.events.SettingsChangedEvent;
 import net.minecraft.client.resources.I18n;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.config.Configuration;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 
 import java.lang.reflect.Field;
 import java.lang.reflect.Modifier;
@@ -83,7 +83,7 @@ public class SettingsRegistry {
             throw new IllegalArgumentException("Default type " + key.getDefault().getClass() + " not supported.");
         }
         settings.put(key, value);
-        FMLCommonHandler.instance().bus().post(new SettingsChangedEvent(this, key));
+        MinecraftForge.EVENT_BUS.post(new SettingsChangedEvent(this, key));
     }
 
     public void save() {

src/main/java/com/replaymod/core/gui/RestoreReplayGui.java

@@ -3,6 +3,7 @@ package com.replaymod.core.gui;
 import com.google.common.io.Files;
 import com.replaymod.replaystudio.PacketData;
 import com.replaymod.replaystudio.io.ReplayInputStream;
+import com.replaymod.replaystudio.io.ReplayOutputStream;
 import com.replaymod.replaystudio.replay.ReplayFile;
 import com.replaymod.replaystudio.replay.ReplayMetaData;
 import com.replaymod.replaystudio.replay.ZipReplayFile;
@@ -45,15 +46,19 @@ public class RestoreReplayGui extends AbstractGuiScreen<RestoreReplayGui> {
                 ReplayMetaData metaData = replayFile.getMetaData();
                 if (metaData != null && metaData.getDuration() == 0) {
                     // Try to restore replay duration
-                    try (ReplayInputStream in = replayFile.getPacketData()) {
+                    // We need to re-write the packet data in case there are any incomplete packets dangling at the end
+                    try (ReplayInputStream in = replayFile.getPacketData();
+                         ReplayOutputStream out = replayFile.writePacketData()) {
                         PacketData last = null;
                         while ((last = in.readPacket()) != null) {
                             metaData.setDuration((int) last.getTime());
+                            out.write(last);
                         }
-                        replayFile.writeMetaData(metaData);
                     } catch (Throwable t) {
                         t.printStackTrace();
                     }
+                    // Write back the actual duration
+                    replayFile.writeMetaData(metaData);
                 }
                 replayFile.save();
                 replayFile.close();

src/main/java/com/replaymod/core/handler/MainMenuHandler.java

@@ -6,8 +6,6 @@ import net.minecraftforge.client.event.GuiScreenEvent;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
-import java.util.List;
-
 /**
  * Moves certain buttons on the main menu upwards so we can inject our own.
  */
@@ -18,14 +16,12 @@ public class MainMenuHandler {
 
     @SubscribeEvent
     public void onInit(GuiScreenEvent.InitGuiEvent.Post event) {
-        if (event.gui instanceof GuiMainMenu) {
-            @SuppressWarnings("unchecked")
-            List<GuiButton> buttonList = event.buttonList;
-            for (GuiButton button : buttonList) {
+        if (event.getGui() instanceof GuiMainMenu) {
+            for (GuiButton button : event.getButtonList()) {
                 // Buttons that aren't in a rectangle directly above our space don't need moving
-                if (button.xPosition + button.width < event.gui.width / 2 - 100
-                        || button.xPosition > event.gui.width / 2 + 100
-                        || button.yPosition > event.gui.height / 4 + 10 + 4 * 24) continue;
+                if (button.xPosition + button.width < event.getGui().width / 2 - 100
+                        || button.xPosition > event.getGui().width / 2 + 100
+                        || button.yPosition > event.getGui().height / 4 + 10 + 4 * 24) continue;
                 // Move button up to make space for two rows of buttons
                 // and then move back down by 10 to compensate for the space to the exit button that was already there
                 button.yPosition -= 2 * 24 - 10;

src/main/java/com/replaymod/core/utils/OpenGLUtils.java

@@ -2,7 +2,7 @@ package com.replaymod.core.utils;
 
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.renderer.Tessellator;
-import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.renderer.VertexBuffer;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import org.lwjgl.BufferUtils;
 import org.lwjgl.opengl.GL11;
@@ -35,7 +35,7 @@ public class OpenGLUtils {
         float f5 = 1.0F / textureHeight;
 
         Tessellator tessellator = Tessellator.getInstance();
-        WorldRenderer vertexBuffer = tessellator.getWorldRenderer();
+        VertexBuffer vertexBuffer = tessellator.getBuffer();
         GlStateManager.translate(x+(width/2), y+(width/2), 0);
         GlStateManager.rotate(rotation, 0, 0, 1);
         vertexBuffer.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX);

src/main/java/com/replaymod/core/utils/Restrictions.java

@@ -1,7 +1,7 @@
 package com.replaymod.core.utils;
 
 import net.minecraft.network.PacketBuffer;
-import net.minecraft.network.play.server.S3FPacketCustomPayload;
+import net.minecraft.network.play.server.SPacketCustomPayload;
 
 /**
  * Restrictions set by the server,
@@ -14,10 +14,10 @@ public class Restrictions {
     private boolean onlyFirstPerson;
     private boolean onlyRecordingPlayer;
 
-    public String handle(S3FPacketCustomPayload packet) {
+    public String handle(SPacketCustomPayload packet) {
         PacketBuffer buffer = packet.getBufferData();
         while (buffer.isReadable()) {
-            String name = buffer.readStringFromBuffer(64);
+            String name = buffer.readString(64);
             boolean active = buffer.readBoolean();
 //            if ("no_xray".equals(name)) {
 //                noXray = active;

src/main/java/com/replaymod/core/utils/Utils.java

@@ -27,8 +27,20 @@ import org.lwjgl.util.ReadableDimension;
 
 import javax.annotation.Nullable;
 import javax.imageio.ImageIO;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLSocketFactory;
+import javax.net.ssl.TrustManagerFactory;
 import java.awt.image.BufferedImage;
 import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.security.KeyManagementException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
 import java.text.SimpleDateFormat;
 import java.util.Arrays;
 import java.util.Date;
@@ -51,6 +63,42 @@ public class Utils {
         DEFAULT_THUMBNAIL = thumbnail;
     }
 
+
+    /**
+     * Neither the root certificate of LetsEncrypt nor the root that cross-signed it is included in the default
+     * Java keystore prior to 8u101.
+     * Therefore whenever a connection to the replaymod.com site is made, this SSLContext has to be used instead.
+     * It has been constructed to include the necessary root certificates.
+     * @see #SSL_SOCKET_FACTORY
+     */
+    public static final SSLContext SSL_CONTEXT;
+
+    /**
+     * @see #SSL_CONTEXT
+     */
+    public static final SSLSocketFactory SSL_SOCKET_FACTORY;
+
+    static {
+        // Largely from https://community.letsencrypt.org/t/134/37
+        try (InputStream in = Utils.class.getResourceAsStream("/dst_root_ca_x3.pem")){
+            Certificate certificate = CertificateFactory.getInstance("X.509").generateCertificate(in);
+
+            KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
+            keyStore.load(null, null);
+            keyStore.setCertificateEntry("1", certificate);
+
+            TrustManagerFactory trustManagerFactory = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
+            trustManagerFactory.init(keyStore);
+
+            SSLContext ctx = SSLContext.getInstance("TLS");
+            ctx.init(null, trustManagerFactory.getTrustManagers(), null);
+            SSL_CONTEXT = ctx;
+            SSL_SOCKET_FACTORY = ctx.getSocketFactory();
+        } catch (IOException | CertificateException | KeyStoreException | NoSuchAlgorithmException | KeyManagementException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
     public static String convertSecondsToShortString(int seconds) {
         int hours = seconds/(60*60);
         int min = seconds/60 - hours*60;
@@ -87,7 +135,7 @@ public class Utils {
     }
 
     public static ResourceLocation getResourceLocationForPlayerUUID(UUID uuid) {
-        NetworkPlayerInfo info = getMinecraft().getNetHandler().getPlayerInfo(uuid);
+        NetworkPlayerInfo info = getMinecraft().getConnection().getPlayerInfo(uuid);
         ResourceLocation skinLocation;
         if (info != null && info.hasLocationSkin()) {
             skinLocation = info.getLocationSkin();

src/main/java/com/replaymod/editor/gui/GuiReplayEditor.java

@@ -1,5 +1,6 @@
 package com.replaymod.editor.gui;
 
+import com.google.common.io.Files;
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import com.google.gson.JsonObject;
@@ -34,6 +35,7 @@ import de.johni0702.minecraft.gui.popup.GuiInfoPopup;
 import de.johni0702.minecraft.gui.popup.GuiYesNoPopup;
 import de.johni0702.minecraft.gui.utils.Colors;
 import net.minecraft.crash.CrashReport;
+import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.FilenameUtils;
 import org.lwjgl.util.ReadableDimension;
 
@@ -119,10 +121,21 @@ public class GuiReplayEditor extends GuiScreen {
     public void save(File inputFile, PacketStream.FilterInfo...filters) {
         save(FilenameUtils.getBaseName(inputFile.getName()), (outputFile) -> {
             Studio studio = new ReplayStudio();
-            try (ReplayFile outputReplay = new ZipReplayFile(studio, inputFile, outputFile);
-                 ReplayOutputStream out = outputReplay.writePacketData()) {
-                // The input replay file MUST be closed before saving the output file
-                try (ReplayFile inputReplay = new ZipReplayFile(studio, inputFile);
+            File tmpDir = null;
+            try {
+                File actualOutputFile  = outputFile;
+                if (outputFile.getCanonicalPath().equals(inputFile.getCanonicalPath())) {
+                    // Input and output files are identical. Due to the way the ZipReplayFile stores its temporary
+                    // data, the same replay file must not be opened twice for writing (tmp files will be deleted once
+                    // either one is closed or, on Windows, will throw an exception when deleted).
+                    tmpDir = Files.createTempDir();
+                    outputFile = new File(tmpDir, "replay.mcpr");
+                    LOGGER.debug("Output file is identical to input file, using temporary output file {} instead",
+                            outputFile);
+                }
+                try (ReplayFile outputReplay = new ZipReplayFile(studio, inputFile, outputFile);
+                     ReplayOutputStream out = outputReplay.writePacketData();
+                     ReplayFile inputReplay = new ZipReplayFile(studio, inputFile);
                      ReplayInputStream in = inputReplay.getPacketData()) {
                     ReplayMetaData metaData = inputReplay.getMetaData();
                     PacketStream stream = studio.createReplayStream(in, true);
@@ -154,11 +167,21 @@ public class GuiReplayEditor extends GuiScreen {
                     // Update duration of new replay
                     metaData.setDuration((int) lastTimestamp);
                     outputReplay.writeMetaData(metaData);
+
+                    out.close();
+                    outputReplay.save();
+                }
+                if (outputFile != actualOutputFile) {
+                    LOGGER.debug("Moving temporary output file {} to {}");
+                    FileUtils.forceDelete(actualOutputFile);
+                    FileUtils.moveFile(outputFile, actualOutputFile);
                 }
-                out.close();
-                outputReplay.save();
             } catch (IOException e) {
                 throw new RuntimeException(e);
+            } finally {
+                if (tmpDir != null && !FileUtils.deleteQuietly(tmpDir)) {
+                    LOGGER.warn("Failed to delete temporary directory {}", tmpDir);
+                }
             }
         });
     }

src/main/java/com/replaymod/editor/gui/GuiTrimPanel.java

@@ -39,6 +39,10 @@ import static com.replaymod.editor.ReplayModEditor.LOGGER;
 import static java.util.Optional.ofNullable;
 
 public class GuiTrimPanel extends GuiPanel {
+    private static GuiNumberField newGuiNumberField() {
+        return new GuiNumberField().setMaxLength(2).setSize(20, 20).setValidateOnFocusChange(true);
+    }
+
     // Special value indicating no replay files were found
     private static final File NO_REPLAY = new File(".");
     // Special value for the initial "Select Marker Keyframe" entry
@@ -50,16 +54,16 @@ public class GuiTrimPanel extends GuiPanel {
             .setMinSize(new Dimension(200, 20)).onSelection(i -> updateSelectedReplay())
             .setToString(f -> f == NO_REPLAY ? "" : FilenameUtils.getBaseName(f.getName()));
 
-    public final GuiNumberField startHour = new GuiNumberField().setSize(20, 20).setMaxLength(2);
-    public final GuiNumberField startMin = new GuiNumberField().setSize(20, 20).setMaxLength(2);
-    public final GuiNumberField startSec = new GuiNumberField().setSize(20, 20).setMaxLength(2);
-    public final GuiNumberField startMilli = new GuiNumberField().setSize(40, 20).setMaxLength(4);
+    public final GuiNumberField startHour = newGuiNumberField();
+    public final GuiNumberField startMin = newGuiNumberField();
+    public final GuiNumberField startSec = newGuiNumberField();
+    public final GuiNumberField startMilli = newGuiNumberField().setSize(40, 20).setMaxLength(4);
     public final GuiDropdownMenu<Marker> startMarker = new GuiDropdownMenu<>();
 
-    public final GuiNumberField endHour = new GuiNumberField().setSize(20, 20).setMaxLength(2);
-    public final GuiNumberField endMin = new GuiNumberField().setSize(20, 20).setMaxLength(2);
-    public final GuiNumberField endSec = new GuiNumberField().setSize(20, 20).setMaxLength(2);
-    public final GuiNumberField endMilli = new GuiNumberField().setSize(40, 20).setMaxLength(4);
+    public final GuiNumberField endHour = newGuiNumberField();
+    public final GuiNumberField endMin = newGuiNumberField();
+    public final GuiNumberField endSec = newGuiNumberField();
+    public final GuiNumberField endMilli = newGuiNumberField().setSize(40, 20).setMaxLength(4);
     public final GuiDropdownMenu<Marker> endMarker = new GuiDropdownMenu<>();
 
     public final GuiPanel timePanel = new GuiPanel(this)

src/main/java/com/replaymod/editor/handler/GuiHandler.java

@@ -8,11 +8,8 @@ import net.minecraft.client.gui.GuiMainMenu;
 import net.minecraft.client.resources.I18n;
 import net.minecraftforge.client.event.GuiScreenEvent;
 import net.minecraftforge.common.MinecraftForge;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
-import java.util.List;
-
 public class GuiHandler {
     private static final int BUTTON_REPLAY_EDITOR = 17890237;
 
@@ -23,31 +20,28 @@ public class GuiHandler {
     }
 
     public void register() {
-        FMLCommonHandler.instance().bus().register(this);
         MinecraftForge.EVENT_BUS.register(this);
     }
 
     @SubscribeEvent
     public void injectIntoMainMenu(GuiScreenEvent.InitGuiEvent event) {
-        if (!(event.gui instanceof GuiMainMenu)) {
+        if (!(event.getGui() instanceof GuiMainMenu)) {
             return;
         }
 
-        @SuppressWarnings("unchecked")
-        List<GuiButton> buttonList = event.buttonList;
-        GuiButton button = new GuiButton(BUTTON_REPLAY_EDITOR, event.gui.width / 2 + 2,
-                event.gui.height / 4 + 10 + 3 * 24, I18n.format("replaymod.gui.replayeditor"));
+        GuiButton button = new GuiButton(BUTTON_REPLAY_EDITOR, event.getGui().width / 2 + 2,
+                event.getGui().height / 4 + 10 + 3 * 24, I18n.format("replaymod.gui.replayeditor"));
         button.width = button.width / 2 - 2;
-        buttonList.add(button);
+        event.getButtonList().add(button);
     }
 
     @SubscribeEvent
     public void onButton(GuiScreenEvent.ActionPerformedEvent.Pre event) {
-        if(!event.button.enabled) return;
+        if(!event.getButton().enabled) return;
 
-        if (event.gui instanceof GuiMainMenu) {
-            if (event.button.id == BUTTON_REPLAY_EDITOR) {
-                new GuiReplayEditor(GuiScreen.wrap(event.gui), mod.getCore()).display();
+        if (event.getGui() instanceof GuiMainMenu) {
+            if (event.getButton().id == BUTTON_REPLAY_EDITOR) {
+                new GuiReplayEditor(GuiScreen.wrap(event.getGui()), mod.getCore()).display();
             }
         }
     }

src/main/java/com/replaymod/extras/FullBrightness.java

@@ -9,7 +9,7 @@ import de.johni0702.minecraft.gui.element.GuiImage;
 import de.johni0702.minecraft.gui.element.IGuiImage;
 import de.johni0702.minecraft.gui.layout.HorizontalLayout;
 import net.minecraft.client.settings.GameSettings;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.TickEvent;
 import org.lwjgl.input.Keyboard;
@@ -40,7 +40,7 @@ public class FullBrightness implements Extra {
             }
         });
 
-        FMLCommonHandler.instance().bus().register(this);
+        MinecraftForge.EVENT_BUS.register(this);
     }
 
     @SubscribeEvent

src/main/java/com/replaymod/extras/HotkeyButtons.java

@@ -17,7 +17,7 @@ import de.johni0702.minecraft.gui.layout.GridLayout;
 import de.johni0702.minecraft.gui.layout.HorizontalLayout;
 import de.johni0702.minecraft.gui.layout.LayoutData;
 import net.minecraft.client.resources.I18n;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import org.lwjgl.input.Keyboard;
 import org.lwjgl.util.Dimension;
@@ -35,7 +35,7 @@ public class HotkeyButtons implements Extra {
     public void register(ReplayMod mod) throws Exception {
         this.mod = mod;
 
-        FMLCommonHandler.instance().bus().register(this);
+        MinecraftForge.EVENT_BUS.register(this);
     }
 
     @SubscribeEvent

src/main/java/com/replaymod/extras/LocalizationExtra.java

@@ -10,7 +10,7 @@ import lombok.RequiredArgsConstructor;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.resources.IResourcePack;
 import net.minecraft.client.resources.data.IMetadataSection;
-import net.minecraft.client.resources.data.IMetadataSerializer;
+import net.minecraft.client.resources.data.MetadataSerializer;
 import net.minecraft.util.ResourceLocation;
 import org.apache.commons.lang3.StringEscapeUtils;
 
@@ -82,7 +82,7 @@ public class LocalizationExtra implements Extra {
                 availableLanguages.put(langcode, prop);
                 return true;
             } catch (ApiException e) {
-                if (e.getError().getId() != 16) { // This language has not been translated
+                if (e.getError() == null || e.getError().getId() != 16) { // This language has not been translated
                     e.printStackTrace();
                 }
             } catch(ConnectException ce) {
@@ -95,12 +95,12 @@ public class LocalizationExtra implements Extra {
         }
 
         @Override
-        public Set getResourceDomains() {
+        public Set<String> getResourceDomains() {
             return ImmutableSet.of("minecraft", "replaymod");
         }
 
         @Override
-        public IMetadataSection getPackMetadata(IMetadataSerializer p_135058_1_, String p_135058_2_) throws IOException {
+        public <T extends IMetadataSection> T getPackMetadata(MetadataSerializer metadataSerializer, String metadataSectionName) throws IOException {
             return null;
         }
 

src/main/java/com/replaymod/extras/OpenEyeExtra.java

@@ -17,6 +17,7 @@ import de.johni0702.minecraft.gui.utils.Colors;
 import net.minecraftforge.fml.common.Loader;
 import org.apache.commons.io.FileUtils;
 
+import javax.net.ssl.HttpsURLConnection;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.net.URL;
@@ -24,8 +25,10 @@ import java.nio.channels.Channels;
 import java.nio.channels.FileChannel;
 import java.nio.channels.ReadableByteChannel;
 
+import static com.replaymod.core.utils.Utils.SSL_SOCKET_FACTORY;
+
 public class OpenEyeExtra implements Extra {
-    private static final String DOWNLOAD_URL = "http://www.replaymod.com/dl/openeye/" + Loader.MC_VERSION;
+    private static final String DOWNLOAD_URL = "https://www.replaymod.com/dl/openeye/" + Loader.MC_VERSION;
     private static final Setting<Boolean> ASK_FOR_OPEN_EYE = new Setting<>("advanced", "askForOpenEye", null, true);
 
     private ReplayMod mod;
@@ -69,7 +72,9 @@ public class OpenEyeExtra implements Extra {
                         File targetFile = new File("mods/" + Loader.MC_VERSION, "OpenEye.jar");
                         FileUtils.forceMkdir(targetFile.getParentFile());
 
-                        ReadableByteChannel in = Channels.newChannel(new URL(DOWNLOAD_URL).openStream());
+                        HttpsURLConnection connection = (HttpsURLConnection) new URL(DOWNLOAD_URL).openConnection();
+                        connection.setSSLSocketFactory(SSL_SOCKET_FACTORY);
+                        ReadableByteChannel in = Channels.newChannel(connection.getInputStream());
                         FileChannel out = new FileOutputStream(targetFile).getChannel();
                         out.transferFrom(in, 0, Long.MAX_VALUE);
                     } catch (Throwable e) {

src/main/java/com/replaymod/extras/playeroverview/PlayerOverview.java

@@ -11,8 +11,10 @@ import com.replaymod.replay.events.ReplayCloseEvent;
 import com.replaymod.replay.events.ReplayOpenEvent;
 import net.minecraft.client.renderer.entity.RenderManager;
 import net.minecraft.client.renderer.entity.RenderPlayer;
+import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.client.event.RenderHandEvent;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import org.lwjgl.input.Keyboard;
 
@@ -34,7 +36,7 @@ public class PlayerOverview implements Extra {
             public void run() {
                 if (module.getReplayHandler() != null) {
                     @SuppressWarnings("unchecked")
-                    List<EntityPlayer> players = mod.getMinecraft().theWorld.getPlayers(EntityPlayer.class, new Predicate() {
+                    List<EntityPlayer> players = mod.getMinecraft().world.getPlayers(EntityPlayer.class, new Predicate() {
                         @Override
                         public boolean apply(Object input) {
                             return !(input instanceof CameraEntity); // Exclude the camera entity
@@ -55,7 +57,7 @@ public class PlayerOverview implements Extra {
             }
         });
 
-        FMLCommonHandler.instance().bus().register(this);
+        MinecraftForge.EVENT_BUS.register(this);
 
         RenderManager renderManager = mod.getMinecraft().getRenderManager();
         @SuppressWarnings("unchecked")
@@ -92,6 +94,14 @@ public class PlayerOverview implements Extra {
         hiddenPlayers.clear();
     }
 
+    @SubscribeEvent
+    public void oRenderHand(RenderHandEvent event) {
+        Entity view = module.getCore().getMinecraft().getRenderViewEntity();
+        if (view != null && isHidden(view.getUniqueID())) {
+            event.setCanceled(true);
+        }
+    }
+
     public boolean isSavingEnabled() {
         return savingEnabled;
     }

src/main/java/com/replaymod/extras/playeroverview/PlayerOverviewGui.java

@@ -16,7 +16,8 @@ import de.johni0702.minecraft.gui.utils.Colors;
 import net.minecraft.client.audio.PositionedSoundRecord;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.entity.player.EnumPlayerModelParts;
-import net.minecraft.potion.Potion;
+import net.minecraft.init.MobEffects;
+import net.minecraft.init.SoundEvents;
 import net.minecraft.util.ResourceLocation;
 import org.lwjgl.util.Dimension;
 import org.lwjgl.util.ReadableDimension;
@@ -40,14 +41,14 @@ public class PlayerOverviewGui extends GuiScreen implements Closeable {
     public final GuiCheckbox checkAll = new GuiCheckbox(contentPanel){
         @Override
         public void onClick() {
-            getMinecraft().getSoundHandler().playSound(PositionedSoundRecord.create(BUTTON_SOUND, 1.0F));
+            getMinecraft().getSoundHandler().playSound(PositionedSoundRecord.getMasterRecord(SoundEvents.UI_BUTTON_CLICK, 1.0F));
             playersScrollable.forEach(IGuiCheckbox.class).setChecked(true);
         }
     }.setLabel("").setChecked(true);
     public final GuiCheckbox uncheckAll = new GuiCheckbox(contentPanel){
         @Override
         public void onClick() {
-            getMinecraft().getSoundHandler().playSound(PositionedSoundRecord.create(BUTTON_SOUND, 1.0F));
+            getMinecraft().getSoundHandler().playSound(PositionedSoundRecord.getMasterRecord(SoundEvents.UI_BUTTON_CLICK, 1.0F));
             playersScrollable.forEach(IGuiCheckbox.class).setChecked(false);
         }
     }.setLabel("").setChecked(false);
@@ -139,7 +140,7 @@ public class PlayerOverviewGui extends GuiScreen implements Closeable {
     }
 
     private static boolean isSpectator(EntityPlayer e) {
-        return e.isInvisible() && e.getActivePotionEffect(Potion.invisibility) == null;
+        return e.isInvisible() && e.getActivePotionEffect(MobEffects.INVISIBILITY) == null;
     }
 
     private static final class PlayerComparator implements Comparator<EntityPlayer> {

src/main/java/com/replaymod/extras/youtube/YoutubeUpload.java

@@ -17,8 +17,8 @@ public class YoutubeUpload implements Extra {
 
     @SubscribeEvent
     public void onGuiOpen(GuiScreenEvent.InitGuiEvent.Post event) {
-        if (GuiScreen.from(event.gui) instanceof GuiRenderingDone) {
-            GuiRenderingDone gui = (GuiRenderingDone) GuiScreen.from(event.gui);
+        if (GuiScreen.from(event.getGui()) instanceof GuiRenderingDone) {
+            GuiRenderingDone gui = (GuiRenderingDone) GuiScreen.from(event.getGui());
             // Check if there already is a youtube button
             if (gui.actionsPanel.getChildren().stream().anyMatch(it -> it instanceof YoutubeButton)) {
                 return; // Button already added

src/main/java/com/replaymod/online/ReplayModOnline.java

@@ -12,8 +12,8 @@ import com.replaymod.replaystudio.replay.ReplayFile;
 import com.replaymod.replaystudio.replay.ZipReplayFile;
 import com.replaymod.replaystudio.studio.ReplayStudio;
 import de.johni0702.minecraft.gui.container.GuiScreen;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.config.Configuration;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
 import net.minecraftforge.fml.common.event.FMLPostInitializationEvent;
@@ -74,7 +74,7 @@ public class ReplayModOnline {
         }
 
         new GuiHandler(this).register();
-        FMLCommonHandler.instance().bus().register(this);
+        MinecraftForge.EVENT_BUS.register(this);
     }
 
     @Mod.EventHandler

src/main/java/com/replaymod/online/api/ApiClient.java

@@ -15,13 +15,19 @@ import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
 
 import javax.imageio.ImageIO;
+import javax.net.ssl.HttpsURLConnection;
 import java.awt.image.BufferedImage;
-import java.io.*;
-import java.net.HttpURLConnection;
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
 import java.net.URL;
 import java.util.List;
 import java.util.function.Consumer;
 
+import static com.replaymod.core.utils.Utils.SSL_SOCKET_FACTORY;
+
 public class ApiClient {
 
     private static final Minecraft mc = Minecraft.getMinecraft();
@@ -130,7 +136,11 @@ public class ApiClient {
         QueryBuilder builder = new QueryBuilder(ReplayModApiMethods.get_thumbnail);
         builder.put("id", file);
         URL url = new URL(builder.toString());
-        return ImageIO.read(url);
+        HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
+        connection.setSSLSocketFactory(SSL_SOCKET_FACTORY);
+        try (InputStream in = connection.getInputStream()) {
+            return ImageIO.read(in);
+        }
     }
 
     private boolean cancelDownload = false;
@@ -143,7 +153,8 @@ public class ApiClient {
         builder.put("id", file);
         String url = builder.toString();
         URL website = new URL(url);
-        HttpURLConnection con = (HttpURLConnection) website.openConnection();
+        HttpsURLConnection con = (HttpsURLConnection) website.openConnection();
+        con.setSSLSocketFactory(SSL_SOCKET_FACTORY);
 
         int fileSize = con.getContentLength();
 

src/main/java/com/replaymod/online/api/SimpleApiClient.java

@@ -7,12 +7,14 @@ import com.google.gson.JsonParser;
 import com.replaymod.online.api.replay.holders.ApiError;
 import org.apache.commons.io.IOUtils;
 
+import javax.net.ssl.HttpsURLConnection;
 import java.io.IOException;
 import java.io.InputStream;
-import java.net.HttpURLConnection;
 import java.net.URL;
 import java.util.Map;
 
+import static com.replaymod.core.utils.Utils.SSL_SOCKET_FACTORY;
+
 public class SimpleApiClient {
 
     private static final JsonParser jsonParser = new JsonParser();
@@ -72,10 +74,11 @@ public class SimpleApiClient {
         // read response
         String responseContent = null;
         InputStream is = null;
-        HttpURLConnection httpUrlConnection = null;
+        HttpsURLConnection httpUrlConnection = null;
         try {
             URL url = new URL(urlString);
-            httpUrlConnection = (HttpURLConnection) url.openConnection();
+            httpUrlConnection = (HttpsURLConnection) url.openConnection();
+            httpUrlConnection.setSSLSocketFactory(SSL_SOCKET_FACTORY);
 
             httpUrlConnection.setRequestMethod("GET");
 

src/main/java/com/replaymod/online/api/replay/FileUploader.java

@@ -9,16 +9,18 @@ import lombok.RequiredArgsConstructor;
 import org.apache.commons.io.IOUtils;
 import org.apache.commons.lang3.StringUtils;
 
+import javax.net.ssl.HttpsURLConnection;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.InputStream;
-import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLEncoder;
 import java.util.Set;
 import java.util.function.Consumer;
 
+import static com.replaymod.core.utils.Utils.SSL_SOCKET_FACTORY;
+
 @RequiredArgsConstructor
 public class FileUploader {
     private static final Gson gson = new Gson();
@@ -48,7 +50,8 @@ public class FileUploader {
             postData += "&name=" + URLEncoder.encode(filename, "UTF-8");
 
             String url = ReplayModApiMethods.upload_file + postData;
-            HttpURLConnection con = (HttpURLConnection) new URL(url).openConnection();
+            HttpsURLConnection con = (HttpsURLConnection) new URL(url).openConnection();
+            con.setSSLSocketFactory(SSL_SOCKET_FACTORY);
             con.setUseCaches(false);
             con.setDoOutput(true);
             con.setRequestMethod("POST");

src/main/java/com/replaymod/online/api/replay/ReplayModApiMethods.java

@@ -2,7 +2,7 @@ package com.replaymod.online.api.replay;
 
 public class ReplayModApiMethods {
 
-    public static final String REPLAYMOD_BASE_URL = "http://ReplayMod.com/api/";
+    public static final String REPLAYMOD_BASE_URL = "https://ReplayMod.com/api/";
 
     public static final String register = REPLAYMOD_BASE_URL+"register";
     public static final String check_authkey = REPLAYMOD_BASE_URL+"check_authkey";

src/main/java/com/replaymod/online/api/replay/holders/MinecraftVersion.java

@@ -2,7 +2,11 @@ package com.replaymod.online.api.replay.holders;
 
 public enum MinecraftVersion {
 
-    MC_1_8("Minecraft 1.8", "1.8");
+    MC_1_8("Minecraft 1.8", "1.8"),
+    MC_1_9_4("Minecraft 1.9.4", "1.9.4"),
+    MC_1_10_2("Minecraft 1.10.2", "1.10.2"),
+    MC_1_11("Minecraft 1.11", "1.11"),
+    MC_1_11_2("Minecraft 1.11.2", "1.11.2");
 
     private String niceName, apiName;
 

src/main/java/com/replaymod/online/handler/GuiHandler.java

@@ -14,11 +14,9 @@ import net.minecraft.client.gui.GuiMainMenu;
 import net.minecraft.client.resources.I18n;
 import net.minecraftforge.client.event.GuiScreenEvent;
 import net.minecraftforge.common.MinecraftForge;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
 import java.io.File;
-import java.util.List;
 
 public class GuiHandler {
     private static final int BUTTON_REPLAY_CENTER = 17890236;
@@ -30,26 +28,23 @@ public class GuiHandler {
     }
 
     public void register() {
-        FMLCommonHandler.instance().bus().register(this);
         MinecraftForge.EVENT_BUS.register(this);
     }
 
     @SubscribeEvent
     public void injectIntoMainMenu(GuiScreenEvent.InitGuiEvent event) {
-        if (!(event.gui instanceof GuiMainMenu)) {
+        if (!(event.getGui() instanceof GuiMainMenu)) {
             return;
         }
 
-        @SuppressWarnings("unchecked")
-        List<GuiButton> buttonList = event.buttonList;
-        GuiButton button = new GuiButton(BUTTON_REPLAY_CENTER, event.gui.width / 2 - 100,
-                event.gui.height / 4 + 10 + 4 * 24, I18n.format("replaymod.gui.replaycenter"));
-        buttonList.add(button);
+        GuiButton button = new GuiButton(BUTTON_REPLAY_CENTER, event.getGui().width / 2 - 100,
+                event.getGui().height / 4 + 10 + 4 * 24, I18n.format("replaymod.gui.replaycenter"));
+        event.getButtonList().add(button);
     }
 
     @SubscribeEvent
     public void injectIntoReplayViewer(GuiScreenEvent.InitGuiEvent.Post event) {
-        AbstractGuiScreen guiScreen = GuiScreen.from(event.gui);
+        AbstractGuiScreen guiScreen = GuiScreen.from(event.getGui());
         if (!(guiScreen instanceof GuiReplayViewer)) {
             return;
         }
@@ -75,15 +70,15 @@ public class GuiHandler {
 
     @SubscribeEvent
     public void onButton(GuiScreenEvent.ActionPerformedEvent.Pre event) {
-        if(!event.button.enabled) return;
+        if(!event.getButton().enabled) return;
 
-        if (event.gui instanceof GuiMainMenu) {
-            if (event.button.id == BUTTON_REPLAY_CENTER) {
+        if (event.getGui() instanceof GuiMainMenu) {
+            if (event.getButton().id == BUTTON_REPLAY_CENTER) {
                 GuiReplayCenter replayCenter = new GuiReplayCenter(mod);
                 if (mod.isLoggedIn()) {
                     replayCenter.display();
                 } else {
-                    new GuiLoginPrompt(mod.getApiClient(), GuiScreen.wrap(event.gui), replayCenter, true).display();
+                    new GuiLoginPrompt(mod.getApiClient(), GuiScreen.wrap(event.getGui()), replayCenter, true).display();
                 }
             }
         }

src/main/java/com/replaymod/pathing/player/AbstractTimelinePlayer.java

@@ -11,7 +11,7 @@ import com.replaymod.replaystudio.pathing.path.Keyframe;
 import com.replaymod.replaystudio.pathing.path.Path;
 import com.replaymod.replaystudio.pathing.path.Timeline;
 import net.minecraft.client.Minecraft;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
 import javax.annotation.Nullable;
@@ -65,7 +65,7 @@ public abstract class AbstractTimelinePlayer {
         }
 
         replayHandler.getReplaySender().setSyncModeAndWait();
-        FMLCommonHandler.instance().bus().register(this);
+        MinecraftForge.EVENT_BUS.register(this);
         lastTime = 0;
         mc.timer = new ReplayTimer(mc.timer);
         mc.timer.timerSpeed = 1;
@@ -87,7 +87,7 @@ public abstract class AbstractTimelinePlayer {
             mc.timer = ((ReplayTimer) mc.timer).getWrapped();
             replayHandler.getReplaySender().setReplaySpeed(0);
             replayHandler.getReplaySender().setAsyncMode(true);
-            FMLCommonHandler.instance().bus().unregister(this);
+            MinecraftForge.EVENT_BUS.unregister(this);
             return;
         }
         long time = getTimePassed();

src/main/java/com/replaymod/pathing/player/ReplayTimer.java

@@ -2,7 +2,7 @@ package com.replaymod.pathing.player;
 
 import com.replaymod.core.utils.WrappedTimer;
 import net.minecraft.util.Timer;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.Event;
 
 /**
@@ -20,7 +20,7 @@ public class ReplayTimer extends WrappedTimer {
         copy(this, state); // Save our current state
         super.updateTimer(); // Update current state
         copy(state, this); // Restore our old state
-        FMLCommonHandler.instance().bus().post(new UpdatedEvent());
+        MinecraftForge.EVENT_BUS.post(new UpdatedEvent());
     }
 
     public Timer getWrapped() {

src/main/java/com/replaymod/recording/ReplayModRecording.java

@@ -4,7 +4,7 @@ import com.replaymod.core.ReplayMod;
 import com.replaymod.core.utils.Restrictions;
 import com.replaymod.recording.handler.ConnectionEventHandler;
 import com.replaymod.recording.packet.PacketListener;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraft.network.NetworkManager;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.event.FMLInitializationEvent;
@@ -51,7 +51,7 @@ public class ReplayModRecording {
 
     @Mod.EventHandler
     public void init(FMLInitializationEvent event) {
-        EventBus bus = FMLCommonHandler.instance().bus();
+        EventBus bus = MinecraftForge.EVENT_BUS;
         bus.register(connectionEventHandler = new ConnectionEventHandler(logger, core));
 
         NetworkRegistry.INSTANCE.newSimpleChannel(Restrictions.PLUGIN_CHANNEL);

src/main/java/com/replaymod/recording/gui/GuiRecordingOverlay.java

@@ -40,7 +40,7 @@ public class GuiRecordingOverlay {
      */
     @SubscribeEvent
     public void renderRecordingIndicator(RenderGameOverlayEvent.Post event) {
-        if (event.type != RenderGameOverlayEvent.ElementType.ALL) return;
+        if (event.getType() != RenderGameOverlayEvent.ElementType.ALL) return;
         if (settingsRegistry.get(Setting.INDICATOR)) {
             FontRenderer fontRenderer = mc.fontRendererObj;
             fontRenderer.drawString(I18n.format("replaymod.gui.recording").toUpperCase(), 30, 18 - (fontRenderer.FONT_HEIGHT / 2), 0xffffffff);

src/main/java/com/replaymod/recording/handler/ConnectionEventHandler.java

@@ -66,6 +66,9 @@ public class ConnectionEventHandler {
                 worldName = mc.getIntegratedServer().getWorldName();
             } else if (Minecraft.getMinecraft().getCurrentServerData() != null) {
                 worldName = Minecraft.getMinecraft().getCurrentServerData().serverIP;
+            } else if (Minecraft.getMinecraft().isConnectedToRealms()) {
+                // we can't access the server name without tapping too deep in the Realms Library
+                worldName = "A Realms Server";
             } else {
                 logger.info("Recording not started as the world is neither local nor remote (probably a replay).");
                 return;

src/main/java/com/replaymod/recording/handler/RecordingEventHandler.java

@@ -1,24 +1,22 @@
 package com.replaymod.recording.handler;
 
 import com.replaymod.recording.packet.PacketListener;
-import io.netty.buffer.ByteBuf;
-import io.netty.buffer.Unpooled;
 import net.minecraft.client.Minecraft;
+import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.item.Item;
+import net.minecraft.inventory.EntityEquipmentSlot;
 import net.minecraft.item.ItemStack;
 import net.minecraft.network.Packet;
-import net.minecraft.network.PacketBuffer;
+import net.minecraft.network.datasync.EntityDataManager;
 import net.minecraft.network.play.server.*;
-import net.minecraft.network.play.server.S14PacketEntity.S17PacketEntityLookMove;
 import net.minecraft.server.integrated.IntegratedServer;
-import net.minecraft.util.BlockPos;
-import net.minecraft.util.MathHelper;
+import net.minecraft.util.EnumHand;
+import net.minecraft.util.SoundCategory;
+import net.minecraft.util.SoundEvent;
+import net.minecraft.util.math.BlockPos;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.event.entity.minecart.MinecartInteractEvent;
 import net.minecraftforge.event.entity.player.PlayerSleepInBedEvent;
-import net.minecraftforge.event.entity.player.PlayerUseItemEvent;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.PlayerEvent.ItemPickupEvent;
 import net.minecraftforge.fml.common.gameevent.TickEvent;
@@ -32,24 +30,24 @@ public class RecordingEventHandler {
     private final PacketListener packetListener;
 
     private Double lastX, lastY, lastZ;
-    private ItemStack[] playerItems = new ItemStack[5];
+    private ItemStack[] playerItems = new ItemStack[6];
     private int ticksSinceLastCorrection;
     private boolean wasSleeping;
     private int lastRiding = -1;
     private Integer rotationYawHeadBefore;
+    private boolean wasHandActive;
+    private EnumHand lastActiveHand;
 
     public RecordingEventHandler(PacketListener packetListener) {
         this.packetListener = packetListener;
     }
 
     public void register() {
-        FMLCommonHandler.instance().bus().register(this);
         MinecraftForge.EVENT_BUS.register(this);
         ((RecordingEventSender) mc.renderGlobal).setRecordingEventHandler(this);
     }
 
     public void unregister() {
-        FMLCommonHandler.instance().bus().unregister(this);
         MinecraftForge.EVENT_BUS.unregister(this);
         RecordingEventSender recordingEventSender = ((RecordingEventSender) mc.renderGlobal);
         if (recordingEventSender.getRecordingEventHandler() == this) {
@@ -59,7 +57,7 @@ public class RecordingEventHandler {
 
     public void onPlayerJoin() {
         try {
-            packetListener.save(spawnPlayer(mc.thePlayer));
+            packetListener.save(new SPacketSpawnPlayer(mc.player));
         } catch(Exception e1) {
             e1.printStackTrace();
         }
@@ -67,46 +65,35 @@ public class RecordingEventHandler {
 
     public void onPlayerRespawn() {
         try {
-            packetListener.save(spawnPlayer(mc.thePlayer));
+            packetListener.save(new SPacketSpawnPlayer(mc.player));
         } catch(Exception e) {
             e.printStackTrace();
         }
     }
 
-    private S0CPacketSpawnPlayer spawnPlayer(EntityPlayer player) {
+    public void onClientSound(SoundEvent sound, SoundCategory category,
+                              double x, double y, double z, float volume, float pitch) {
         try {
-            S0CPacketSpawnPlayer packet = new S0CPacketSpawnPlayer();
-
-            ByteBuf bb = Unpooled.buffer();
-            PacketBuffer pb = new PacketBuffer(bb);
-
-            pb.writeVarIntToBuffer(player.getEntityId());
-            pb.writeUuid(EntityPlayer.getUUID(player.getGameProfile()));
-
-            pb.writeInt(MathHelper.floor_double(player.posX * 32.0D));
-            pb.writeInt(MathHelper.floor_double(player.posY * 32.0D));
-            pb.writeInt(MathHelper.floor_double(player.posZ * 32.0D));
-            pb.writeByte((byte) ((int) (player.rotationYaw * 256.0F / 360.0F)));
-            pb.writeByte((byte) ((int) (player.rotationPitch * 256.0F / 360.0F)));
-
-            ItemStack itemstack = player.inventory.getCurrentItem();
-            pb.writeShort(itemstack == null ? 0 : Item.getIdFromItem(itemstack.getItem()));
-
-            player.getDataWatcher().writeTo(pb);
-
-            packet.readPacketData(pb);
-
-            return packet;
+            // Send to all other players in ServerWorldEventHandler#playSoundToAllNearExcept
+            packetListener.save(new SPacketSoundEffect(sound, category, x, y, z, volume, pitch));
+        } catch(Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void onClientEffect(int type, BlockPos pos, int data) {
+        try {
+            // Send to all other players in ServerWorldEventHandler#playEvent
+            packetListener.save(new SPacketEffect(type, pos, data, false));
         } catch(Exception e) {
             e.printStackTrace();
-            return null;
         }
     }
 
     @SubscribeEvent
     public void onPlayerTick(PlayerTickEvent e) {
         try {
-            if(e.player != mc.thePlayer) return;
+            if(e.player != mc.player) return;
 
             boolean force = false;
             if(lastX == null || lastY == null || lastZ == null) {
@@ -131,19 +118,14 @@ public class RecordingEventHandler {
             lastZ = e.player.posZ;
 
             Packet packet;
-            if(force || Math.abs(dx) > 4.0 || Math.abs(dy) > 4.0 || Math.abs(dz) > 4.0) {
-                int x = MathHelper.floor_double(e.player.posX * 32.0D);
-                int y = MathHelper.floor_double(e.player.posY * 32.0D);
-                int z = MathHelper.floor_double(e.player.posZ * 32.0D);
-                byte yaw = (byte) ((int) (e.player.rotationYaw * 256.0F / 360.0F));
-                byte pitch = (byte) ((int) (e.player.rotationPitch * 256.0F / 360.0F));
-                packet = new S18PacketEntityTeleport(e.player.getEntityId(), x, y, z, yaw, pitch, e.player.onGround);
+            if (force || Math.abs(dx) > 8.0 || Math.abs(dy) > 8.0 || Math.abs(dz) > 8.0) {
+                packet = new SPacketEntityTeleport(e.player);
             } else {
                 byte newYaw = (byte) ((int) (e.player.rotationYaw * 256.0F / 360.0F));
                 byte newPitch = (byte) ((int) (e.player.rotationPitch * 256.0F / 360.0F));
 
-                packet = new S17PacketEntityLookMove(e.player.getEntityId(),
-                        (byte) Math.round(dx * 32), (byte) Math.round(dy * 32), (byte) Math.round(dz * 32),
+                packet = new SPacketEntity.S17PacketEntityLookMove(e.player.getEntityId(),
+                        (short) Math.round(dx * 4096), (short) Math.round(dy * 4096), (short) Math.round(dz * 4096),
                         newYaw, newPitch, e.player.onGround);
             }
 
@@ -153,37 +135,16 @@ public class RecordingEventHandler {
             int rotationYawHead = ((int)(e.player.rotationYawHead * 256.0F / 360.0F));
 
             if(!Objects.equals(rotationYawHead, rotationYawHeadBefore)) {
-                S19PacketEntityHeadLook head = new S19PacketEntityHeadLook();
-                ByteBuf bb1 = Unpooled.buffer();
-                PacketBuffer pb1 = new PacketBuffer(bb1);
-
-                pb1.writeVarIntToBuffer(e.player.getEntityId());
-                pb1.writeByte(rotationYawHead);
-
-                head.readPacketData(pb1);
-
-                packetListener.save(head);
-
+                packetListener.save(new SPacketEntityHeadLook(e.player, (byte) rotationYawHead));
                 rotationYawHeadBefore = rotationYawHead;
             }
 
-            S12PacketEntityVelocity vel = new S12PacketEntityVelocity(e.player.getEntityId(), e.player.motionX, e.player.motionY, e.player.motionZ);
-            packetListener.save(vel);
+            packetListener.save(new SPacketEntityVelocity(e.player.getEntityId(), e.player.motionX, e.player.motionY, e.player.motionZ));
 
             //Animation Packets
             //Swing Animation
-            if(e.player.swingProgressInt == 1) {
-                S0BPacketAnimation pac = new S0BPacketAnimation();
-
-                ByteBuf bb = Unpooled.buffer();
-                PacketBuffer pb = new PacketBuffer(bb);
-
-                pb.writeVarIntToBuffer(e.player.getEntityId());
-                pb.writeByte(0);
-
-                pac.readPacketData(pb);
-
-                packetListener.save(pac);
+            if (e.player.isSwingInProgress && e.player.swingProgressInt == -1) {
+                packetListener.save(new SPacketAnimation(e.player, e.player.swingingHand == EnumHand.MAIN_HAND ? 0 : 3));
             }
 
 			/*
@@ -207,77 +168,64 @@ public class RecordingEventHandler {
 			 */
 
             //Inventory Handling
-            if(playerItems[0] != mc.thePlayer.getHeldItem()) {
-                playerItems[0] = mc.thePlayer.getHeldItem();
-                S04PacketEntityEquipment pee = new S04PacketEntityEquipment(e.player.getEntityId(), 0, playerItems[0]);
-                packetListener.save(pee);
+            if (playerItems[0] != mc.player.getHeldItem(EnumHand.MAIN_HAND)) {
+                playerItems[0] = mc.player.getHeldItem(EnumHand.MAIN_HAND);
+                packetListener.save(new SPacketEntityEquipment(e.player.getEntityId(), EntityEquipmentSlot.MAINHAND, playerItems[0]));
             }
 
-            if(playerItems[1] != mc.thePlayer.inventory.armorInventory[0]) {
-                playerItems[1] = mc.thePlayer.inventory.armorInventory[0];
-                S04PacketEntityEquipment pee = new S04PacketEntityEquipment(e.player.getEntityId(), 1, playerItems[1]);
-                packetListener.save(pee);
+            if (playerItems[1] != mc.player.getHeldItem(EnumHand.OFF_HAND)) {
+                playerItems[1] = mc.player.getHeldItem(EnumHand.OFF_HAND);
+                packetListener.save(new SPacketEntityEquipment(e.player.getEntityId(), EntityEquipmentSlot.OFFHAND, playerItems[1]));
             }
 
-            if(playerItems[2] != mc.thePlayer.inventory.armorInventory[1]) {
-                playerItems[2] = mc.thePlayer.inventory.armorInventory[1];
-                S04PacketEntityEquipment pee = new S04PacketEntityEquipment(e.player.getEntityId(), 2, playerItems[2]);
-                packetListener.save(pee);
+            if (playerItems[2] != mc.player.getItemStackFromSlot(EntityEquipmentSlot.FEET)) {
+                playerItems[2] = mc.player.getItemStackFromSlot(EntityEquipmentSlot.FEET);
+                packetListener.save(new SPacketEntityEquipment(e.player.getEntityId(), EntityEquipmentSlot.FEET, playerItems[2]));
             }
 
-            if(playerItems[3] != mc.thePlayer.inventory.armorInventory[2]) {
-                playerItems[3] = mc.thePlayer.inventory.armorInventory[2];
-                S04PacketEntityEquipment pee = new S04PacketEntityEquipment(e.player.getEntityId(), 3, playerItems[3]);
-                packetListener.save(pee);
+            if (playerItems[3] != mc.player.getItemStackFromSlot(EntityEquipmentSlot.LEGS)) {
+                playerItems[3] = mc.player.getItemStackFromSlot(EntityEquipmentSlot.LEGS);
+                packetListener.save(new SPacketEntityEquipment(e.player.getEntityId(), EntityEquipmentSlot.LEGS, playerItems[3]));
             }
 
-            if(playerItems[4] != mc.thePlayer.inventory.armorInventory[3]) {
-                playerItems[4] = mc.thePlayer.inventory.armorInventory[3];
-                S04PacketEntityEquipment pee = new S04PacketEntityEquipment(e.player.getEntityId(), 4, playerItems[4]);
-                packetListener.save(pee);
+            if (playerItems[4] != mc.player.getItemStackFromSlot(EntityEquipmentSlot.CHEST)) {
+                playerItems[4] = mc.player.getItemStackFromSlot(EntityEquipmentSlot.CHEST);
+                packetListener.save(new SPacketEntityEquipment(e.player.getEntityId(), EntityEquipmentSlot.CHEST, playerItems[4]));
+            }
+
+            if (playerItems[5] != mc.player.getItemStackFromSlot(EntityEquipmentSlot.HEAD)) {
+                playerItems[5] = mc.player.getItemStackFromSlot(EntityEquipmentSlot.HEAD);
+                packetListener.save(new SPacketEntityEquipment(e.player.getEntityId(), EntityEquipmentSlot.HEAD, playerItems[5]));
             }
 
             //Leaving Ride
 
-            if((!mc.thePlayer.isRiding() && lastRiding != -1) ||
-                    (mc.thePlayer.isRiding() && lastRiding != mc.thePlayer.ridingEntity.getEntityId())) {
-                if(!mc.thePlayer.isRiding()) {
+            if((!mc.player.isRiding() && lastRiding != -1) ||
+                    (mc.player.isRiding() && lastRiding != mc.player.getRidingEntity().getEntityId())) {
+                if(!mc.player.isRiding()) {
                     lastRiding = -1;
                 } else {
-                    lastRiding = mc.thePlayer.ridingEntity.getEntityId();
+                    lastRiding = mc.player.getRidingEntity().getEntityId();
                 }
-
-                S1BPacketEntityAttach pea = new S1BPacketEntityAttach();
-
-                ByteBuf buf = Unpooled.buffer();
-                PacketBuffer pbuf = new PacketBuffer(buf);
-
-                pbuf.writeInt(e.player.getEntityId());
-                pbuf.writeInt(lastRiding);
-                pbuf.writeBoolean(false);
-
-                pea.readPacketData(pbuf);
-
-                packetListener.save(pea);
+                packetListener.save(new SPacketEntityAttach(e.player, e.player.getRidingEntity()));
             }
 
             //Sleeping
-            if(!mc.thePlayer.isPlayerSleeping() && wasSleeping) {
-                S0BPacketAnimation pac = new S0BPacketAnimation();
-
-                ByteBuf bb = Unpooled.buffer();
-                PacketBuffer pb = new PacketBuffer(bb);
-
-                pb.writeVarIntToBuffer(e.player.getEntityId());
-                pb.writeByte(2);
-
-                pac.readPacketData(pb);
-
-                packetListener.save(pac);
-
+            if(!mc.player.isPlayerSleeping() && wasSleeping) {
+                packetListener.save(new SPacketAnimation(e.player, 2));
                 wasSleeping = false;
             }
 
+            // Active hand (e.g. eating, drinking, blocking)
+            if (mc.player.isHandActive() ^ wasHandActive || mc.player.getActiveHand() != lastActiveHand) {
+                wasHandActive = mc.player.isHandActive();
+                lastActiveHand = mc.player.getActiveHand();
+                EntityDataManager dataManager = new EntityDataManager(null);
+                int state = (wasHandActive ? 1 : 0) | (lastActiveHand == EnumHand.OFF_HAND ? 2 : 0);
+                dataManager.register(EntityLiving.HAND_STATES, (byte) state);
+                packetListener.save(new SPacketEntityMetadata(mc.player.getEntityId(), dataManager, true));
+            }
+
         } catch(Exception e1) {
             e1.printStackTrace();
         }
@@ -286,27 +234,8 @@ public class RecordingEventHandler {
     @SubscribeEvent
     public void onPickupItem(ItemPickupEvent event) {
         try {
-            packetListener.save(new S0DPacketCollectItem(event.pickedUp.getEntityId(), event.player.getEntityId()));
-        } catch(Exception e) {
-            e.printStackTrace();
-        }
-    }
-
-    @SubscribeEvent
-    public void onStartEating(PlayerUseItemEvent.Start event) {
-        try {
-            if(!event.entityPlayer.isEating()) return;
-            S0BPacketAnimation packet = new S0BPacketAnimation();
-
-            ByteBuf bb = Unpooled.buffer();
-            PacketBuffer pb = new PacketBuffer(bb);
-
-            pb.writeVarIntToBuffer(event.entityPlayer.getEntityId());
-            pb.writeByte(3);
-
-            packet.readPacketData(pb);
-
-            packetListener.save(packet);
+            packetListener.save(new SPacketCollectItem(event.pickedUp.getEntityId(), event.player.getEntityId(),
+                    event.pickedUp.getEntityItem().getMaxStackSize()));
         } catch(Exception e) {
             e.printStackTrace();
         }
@@ -315,21 +244,11 @@ public class RecordingEventHandler {
     @SubscribeEvent
     public void onSleep(PlayerSleepInBedEvent event) {
         try {
-            if(event.entityPlayer != mc.thePlayer) {
+            if (event.getEntityPlayer() != mc.player) {
                 return;
             }
 
-            S0APacketUseBed pub = new S0APacketUseBed();
-
-            ByteBuf buf = Unpooled.buffer();
-            PacketBuffer pbuf = new PacketBuffer(buf);
-
-            pbuf.writeVarIntToBuffer(event.entityPlayer.getEntityId());
-            pbuf.writeBlockPos(event.pos);
-
-            pub.readPacketData(pbuf);
-
-            packetListener.save(pub);
+            packetListener.save(new SPacketUseBed(event.getEntityPlayer(), event.getPos()));
 
             wasSleeping = true;
 
@@ -341,33 +260,22 @@ public class RecordingEventHandler {
     @SubscribeEvent
     public void enterMinecart(MinecartInteractEvent event) {
         try {
-            if(event.player != mc.thePlayer) {
+            if(event.getEntity() != mc.player) {
                 return;
             }
 
-            S1BPacketEntityAttach pea = new S1BPacketEntityAttach();
+            packetListener.save(new SPacketEntityAttach(event.getPlayer(), event.getMinecart()));
 
-            ByteBuf buf = Unpooled.buffer();
-            PacketBuffer pbuf = new PacketBuffer(buf);
-
-            pbuf.writeInt(event.player.getEntityId());
-            pbuf.writeInt(event.minecart.getEntityId());
-            pbuf.writeBoolean(false);
-
-            pea.readPacketData(pbuf);
-
-            packetListener.save(pea);
-
-            lastRiding = event.minecart.getEntityId();
+            lastRiding = event.getMinecart().getEntityId();
         } catch(Exception e) {
             e.printStackTrace();
         }
     }
 
     public void onBlockBreakAnim(int breakerId, BlockPos pos, int progress) {
-        EntityPlayer thePlayer = mc.thePlayer;
+        EntityPlayer thePlayer = mc.player;
         if (thePlayer != null && breakerId == thePlayer.getEntityId()) {
-            packetListener.save(new S25PacketBlockBreakAnim(breakerId, pos, progress));
+            packetListener.save(new SPacketBlockBreakAnim(breakerId, pos, progress));
         }
     }
 

src/main/java/com/replaymod/recording/mixin/MixinNetHandlerPlayClient.java

@@ -4,8 +4,8 @@ import com.replaymod.recording.handler.RecordingEventHandler;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.network.NetHandlerPlayClient;
 import net.minecraft.client.network.NetworkPlayerInfo;
-import net.minecraft.network.play.server.S07PacketRespawn;
-import net.minecraft.network.play.server.S38PacketPlayerListItem;
+import net.minecraft.network.play.server.SPacketPlayerListItem;
+import net.minecraft.network.play.server.SPacketRespawn;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
@@ -36,15 +36,15 @@ public abstract class MixinNetHandlerPlayClient {
      * @param ci Callback info
      */
     @Inject(method = "handlePlayerListItem", at=@At("HEAD"))
-    public void recordOwnJoin(S38PacketPlayerListItem packet, CallbackInfo ci) {
-        if (gameController.thePlayer == null) return;
+    public void recordOwnJoin(SPacketPlayerListItem packet, CallbackInfo ci) {
+        if (gameController.player == null) return;
 
         RecordingEventHandler handler = getRecordingEventHandler();
-        if (handler != null && packet.getAction() == S38PacketPlayerListItem.Action.ADD_PLAYER) {
-            for (S38PacketPlayerListItem.AddPlayerData data : packet.getEntries()) {
+        if (handler != null && packet.getAction() == SPacketPlayerListItem.Action.ADD_PLAYER) {
+            for (SPacketPlayerListItem.AddPlayerData data : packet.getEntries()) {
                 if (data.getProfile() == null || data.getProfile().getId() == null) continue;
                 // Only add spawn packet for our own player and only if he isn't known yet
-                if (data.getProfile().getId().equals(Minecraft.getMinecraft().thePlayer.getGameProfile().getId())
+                if (data.getProfile().getId().equals(Minecraft.getMinecraft().player.getGameProfile().getId())
                         && !playerInfoMap.containsKey(data.getProfile().getId())) {
                     handler.onPlayerJoin();
                 }
@@ -55,12 +55,12 @@ public abstract class MixinNetHandlerPlayClient {
     /**
      * Record the own player entity respawning.
      * We cannot use the {@link net.minecraftforge.event.entity.EntityJoinWorldEvent} because that would also include
-     * the first spawn which is already handled by {@link #recordOwnJoin(S38PacketPlayerListItem, CallbackInfo)}.
+     * the first spawn which is already handled by {@link #recordOwnJoin(SPacketPlayerListItem, CallbackInfo)}.
      * @param packet The packet
      * @param ci Callback info
      */
     @Inject(method = "handleRespawn", at=@At("RETURN"))
-    public void recordOwnRespawn(S07PacketRespawn packet, CallbackInfo ci) {
+    public void recordOwnRespawn(SPacketRespawn packet, CallbackInfo ci) {
         RecordingEventHandler handler = getRecordingEventHandler();
         if (handler != null) {
             handler.onPlayerRespawn();

src/main/java/com/replaymod/recording/mixin/MixinPlayerControllerMP.java

@@ -0,0 +1,28 @@
+package com.replaymod.recording.mixin;
+
+import com.replaymod.recording.handler.RecordingEventHandler;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.multiplayer.PlayerControllerMP;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(PlayerControllerMP.class)
+public abstract class MixinPlayerControllerMP implements RecordingEventHandler.RecordingEventSender {
+
+    @Shadow
+    private Minecraft mc;
+
+    // Redirects the call to playEvent without the initial player argument to the method with that argument
+    // The new method will then play it and (if applicable) record it. (See MixinWorldClient)
+    // This is necessary for the block break event (particles and sound) to be recorded. Otherwise it looks like the
+    // event was emitted because of a packet (player will be null) and not as it actually was (by the player).
+    @Redirect(method = "onPlayerDestroyBlock", at = @At(value = "INVOKE",
+            target = "Lnet/minecraft/world/World;playEvent(ILnet/minecraft/util/math/BlockPos;I)V"))
+    public void replayModRecording_playEvent_fixed(World world, int type, BlockPos pos, int data) {
+        world.playEvent(mc.player, type, pos, data);
+    }
+}

src/main/java/com/replaymod/recording/mixin/MixinRenderGlobal.java

@@ -2,7 +2,7 @@ package com.replaymod.recording.mixin;
 
 import com.replaymod.recording.handler.RecordingEventHandler;
 import net.minecraft.client.renderer.RenderGlobal;
-import net.minecraft.util.BlockPos;
+import net.minecraft.util.math.BlockPos;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;

src/main/java/com/replaymod/recording/mixin/MixinWorldClient.java

@@ -0,0 +1,62 @@
+package com.replaymod.recording.mixin;
+
+import com.replaymod.recording.handler.RecordingEventHandler;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.multiplayer.WorldClient;
+import net.minecraft.entity.player.EntityPlayer;
+import net.minecraft.profiler.Profiler;
+import net.minecraft.util.SoundCategory;
+import net.minecraft.util.SoundEvent;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
+import net.minecraft.world.WorldProvider;
+import net.minecraft.world.storage.ISaveHandler;
+import net.minecraft.world.storage.WorldInfo;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(WorldClient.class)
+public abstract class MixinWorldClient extends World implements RecordingEventHandler.RecordingEventSender {
+    @Shadow
+    private Minecraft mc;
+
+    protected MixinWorldClient(ISaveHandler saveHandlerIn, WorldInfo info, WorldProvider providerIn, Profiler profilerIn, boolean client) {
+        super(saveHandlerIn, info, providerIn, profilerIn, client);
+    }
+
+    private RecordingEventHandler replayModRecording_getRecordingEventHandler() {
+        return ((RecordingEventHandler.RecordingEventSender) mc.renderGlobal).getRecordingEventHandler();
+    }
+
+    // Sounds that are emitted by thePlayer no longer take the long way over the server
+    // but are instead played directly by the client. The server only sends these sounds to
+    // other clients so we have to record them manually.
+    // E.g. Block place sounds
+    @Inject(method = "playSound", at = @At("HEAD"))
+    public void replayModRecording_recordClientSound(EntityPlayer player, double x, double y, double z, SoundEvent sound, SoundCategory category,
+                          float volume, float pitch, CallbackInfo ci) {
+        if (player == mc.player) {
+            RecordingEventHandler handler = replayModRecording_getRecordingEventHandler();
+            if (handler != null) {
+                handler.onClientSound(sound, category, x, y, z, volume, pitch);
+            }
+        }
+    }
+
+    // Same goes for level events (also called effects). E.g. door open, block break, etc.
+    // These are handled in the World class, so we override the method in WorldClient and add our special handling.
+    @Override
+    public void playEvent(EntityPlayer player, int type, BlockPos pos, int data) {
+        if (player == mc.player) {
+            // We caused this event, the server won't send it to us
+            RecordingEventHandler handler = replayModRecording_getRecordingEventHandler();
+            if (handler != null) {
+                handler.onClientEffect(type, pos, data);
+            }
+        }
+        super.playEvent(player, type, pos, data);
+    }
+}

src/main/java/com/replaymod/recording/packet/PacketListener.java

@@ -9,21 +9,24 @@ import io.netty.buffer.Unpooled;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 import net.minecraft.client.Minecraft;
-import net.minecraft.entity.DataWatcher;
 import net.minecraft.entity.Entity;
 import net.minecraft.network.EnumConnectionState;
 import net.minecraft.network.EnumPacketDirection;
 import net.minecraft.network.Packet;
 import net.minecraft.network.PacketBuffer;
+import net.minecraft.network.datasync.EntityDataManager;
 import net.minecraft.network.play.server.*;
-import net.minecraft.util.ChatComponentText;
+import net.minecraft.util.text.TextComponentString;
 import net.minecraftforge.fml.common.network.internal.FMLProxyPacket;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
 import java.io.DataOutputStream;
 import java.io.IOException;
-import java.util.*;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.UUID;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
@@ -84,8 +87,8 @@ public class PacketListener extends ChannelInboundHandlerAdapter {
 
     public void save(Packet packet) {
         try {
-            if(packet instanceof S0CPacketSpawnPlayer) {
-                UUID uuid = ((S0CPacketSpawnPlayer) packet).getPlayer();
+            if(packet instanceof SPacketSpawnPlayer) {
+                UUID uuid = ((SPacketSpawnPlayer) packet).getUniqueId();
                 Set<String> uuids = new HashSet<>(Arrays.asList(metaData.getPlayers()));
                 uuids.add(uuid.toString());
                 metaData.setPlayers(uuids.toArray(new String[uuids.size()]));
@@ -151,16 +154,16 @@ public class PacketListener extends ChannelInboundHandlerAdapter {
             try {
                 Packet packet = (Packet) msg;
 
-                if(packet instanceof S0DPacketCollectItem) {
-                    if(mc.thePlayer != null ||
-                            ((S0DPacketCollectItem) packet).getEntityID() == mc.thePlayer.getEntityId()) {
+                if(packet instanceof SPacketCollectItem) {
+                    if(mc.player != null ||
+                            ((SPacketCollectItem) packet).getEntityID() == mc.player.getEntityId()) {
                         super.channelRead(ctx, msg);
                         return;
                     }
                 }
 
-                if (packet instanceof S48PacketResourcePackSend) {
-                    save(resourcePackRecorder.handleResourcePack((S48PacketResourcePackSend) packet));
+                if (packet instanceof SPacketResourcePackSend) {
+                    save(resourcePackRecorder.handleResourcePack((SPacketResourcePackSend) packet));
                     return;
                 }
 
@@ -173,10 +176,10 @@ public class PacketListener extends ChannelInboundHandlerAdapter {
 
                 save(packet);
 
-                if (packet instanceof S3FPacketCustomPayload) {
-                    S3FPacketCustomPayload p = (S3FPacketCustomPayload) packet;
+                if (packet instanceof SPacketCustomPayload) {
+                    SPacketCustomPayload p = (SPacketCustomPayload) packet;
                     if (Restrictions.PLUGIN_CHANNEL.equals(p.getChannelName())) {
-                        packet = new S40PacketDisconnect(new ChatComponentText("Please update to view this replay."));
+                        packet = new SPacketDisconnect(new TextComponentString("Please update to view this replay."));
                         save(packet);
                     }
                 }
@@ -189,27 +192,31 @@ public class PacketListener extends ChannelInboundHandlerAdapter {
         super.channelRead(ctx, msg);
     }
 
+    private <T> void DataManager_set(EntityDataManager dataManager, EntityDataManager.DataEntry<T> entry) {
+        dataManager.register(entry.getKey(), entry.getValue());
+    }
+
     @SuppressWarnings("unchecked")
     private byte[] getPacketData(Packet packet) throws IOException {
-        if(packet instanceof S0FPacketSpawnMob) {
-            S0FPacketSpawnMob p = (S0FPacketSpawnMob) packet;
-            if (p.field_149043_l == null) {
-                p.field_149043_l = new DataWatcher(null);
-                if(p.func_149027_c() != null) {
-                    for(DataWatcher.WatchableObject wo : (List<DataWatcher.WatchableObject>) p.func_149027_c()) {
-                        p.field_149043_l.addObject(wo.getDataValueId(), wo.getObject());
+        if (packet instanceof SPacketSpawnMob) {
+            SPacketSpawnMob p = (SPacketSpawnMob) packet;
+            if (p.dataManager == null) {
+                p.dataManager = new EntityDataManager(null);
+                if (p.getDataManagerEntries() != null) {
+                    for (EntityDataManager.DataEntry<?> entry : p.getDataManagerEntries()) {
+                        DataManager_set(p.dataManager, entry);
                     }
                 }
             }
         }
 
-        if(packet instanceof S0CPacketSpawnPlayer) {
-            S0CPacketSpawnPlayer p = (S0CPacketSpawnPlayer) packet;
+        if (packet instanceof SPacketSpawnPlayer) {
+            SPacketSpawnPlayer p = (SPacketSpawnPlayer) packet;
             if (p.watcher == null) {
-                p.watcher = new DataWatcher(null);
-                if(p.func_148944_c() != null) {
-                    for(DataWatcher.WatchableObject wo : p.func_148944_c()) {
-                        p.watcher.addObject(wo.getDataValueId(), wo.getObject());
+                p.watcher = new EntityDataManager(null);
+                if (p.getDataManagerEntries() != null) {
+                    for (EntityDataManager.DataEntry<?> entry : p.getDataManagerEntries()) {
+                        DataManager_set(p.watcher, entry);
                     }
                 }
             }
@@ -221,7 +228,7 @@ public class PacketListener extends ChannelInboundHandlerAdapter {
         }
         ByteBuf byteBuf = Unpooled.buffer();
         PacketBuffer packetBuffer = new PacketBuffer(byteBuf);
-        packetBuffer.writeVarIntToBuffer(packetId);
+        packetBuffer.writeVarInt(packetId);
         packet.writePacketData(packetBuffer);
 
         byteBuf.readerIndex(0);

src/main/java/com/replaymod/recording/packet/ResourcePackRecorder.java

@@ -15,8 +15,8 @@ import net.minecraft.client.network.NetHandlerPlayClient;
 import net.minecraft.client.resources.I18n;
 import net.minecraft.client.resources.ResourcePackRepository;
 import net.minecraft.network.NetworkManager;
-import net.minecraft.network.play.client.C19PacketResourcePackStatus;
-import net.minecraft.network.play.server.S48PacketResourcePackSend;
+import net.minecraft.network.play.client.CPacketResourcePackStatus;
+import net.minecraft.network.play.server.SPacketResourcePackSend;
 import net.minecraft.util.HttpUtil;
 import org.apache.commons.io.FileUtils;
 import org.apache.logging.log4j.LogManager;
@@ -26,6 +26,7 @@ import javax.annotation.Nonnull;
 import java.io.File;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.util.HashMap;
 import java.util.Map;
 
 /**
@@ -52,6 +53,9 @@ public class ResourcePackRecorder {
             boolean doWrite = false; // Whether we are the first and have to write it
             synchronized (replayFile) { // Need to read, modify and write the resource pack index atomically
                 Map<Integer, String> index = replayFile.getResourcePackIndex();
+                if (index == null) {
+                    index = new HashMap<>();
+                }
                 if (!index.containsValue(hash)) {
                     // Hash is unknown, we have to write the resource pack ourselves
                     doWrite = true;
@@ -70,9 +74,9 @@ public class ResourcePackRecorder {
         }
     }
 
-    public synchronized S48PacketResourcePackSend handleResourcePack(S48PacketResourcePackSend packet) {
+    public synchronized SPacketResourcePackSend handleResourcePack(SPacketResourcePackSend packet) {
         final int requestId = nextRequestId++;
-        final NetHandlerPlayClient netHandler = mc.getNetHandler();
+        final NetHandlerPlayClient netHandler = mc.getConnection();
         final NetworkManager netManager = netHandler.getNetworkManager();
         final String url = packet.getURL();
         final String hash = packet.getHash();
@@ -83,60 +87,60 @@ public class ResourcePackRecorder {
             final File levelDir = new File(savesDir, levelName);
 
             if (levelDir.isFile()) {
-                netManager.sendPacket(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.ACCEPTED));
+                netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.ACCEPTED));
                 Futures.addCallback(mc.getResourcePackRepository().setResourcePackInstance(levelDir), new FutureCallback<Object>() {
                     @Override
                     public void onSuccess(Object result) {
                         recordResourcePack(levelDir, requestId);
-                        netManager.sendPacket(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.SUCCESSFULLY_LOADED));
+                        netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.SUCCESSFULLY_LOADED));
                     }
 
                     @Override
                     public void onFailure(@Nonnull Throwable throwable) {
-                        netManager.sendPacket(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.FAILED_DOWNLOAD));
+                        netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.FAILED_DOWNLOAD));
                     }
                 });
             } else {
-                netManager.sendPacket(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.FAILED_DOWNLOAD));
+                netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.FAILED_DOWNLOAD));
             }
         } else {
             final ServerData serverData = mc.getCurrentServerData();
             if (serverData != null && serverData.getResourceMode() == ServerData.ServerResourceMode.ENABLED) {
-                netManager.sendPacket(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.ACCEPTED));
+                netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.ACCEPTED));
                 downloadResourcePackFuture(requestId, url, hash);
             } else if (serverData != null && serverData.getResourceMode() != ServerData.ServerResourceMode.PROMPT) {
-                netManager.sendPacket(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.DECLINED));
+                netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.DECLINED));
             } else {
                 mc.addScheduledTask(() -> mc.displayGuiScreen(new GuiYesNo((result, id) -> {
                     if (serverData != null) {
                         serverData.setResourceMode(result ? ServerData.ServerResourceMode.ENABLED : ServerData.ServerResourceMode.DISABLED);
                     }
                     if (result) {
-                        netManager.sendPacket(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.ACCEPTED));
+                        netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.ACCEPTED));
                         downloadResourcePackFuture(requestId, url, hash);
                     } else {
-                        netManager.sendPacket(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.DECLINED));
+                        netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.DECLINED));
                     }
 
-                    ServerList.func_147414_b(serverData);
+                    ServerList.saveSingleServer(serverData);
                     mc.displayGuiScreen(null);
                 }, I18n.format("multiplayer.texturePrompt.line1"), I18n.format("multiplayer.texturePrompt.line2"), 0)));
             }
         }
 
-        return new S48PacketResourcePackSend("replay://" + requestId, "");
+        return new SPacketResourcePackSend("replay://" + requestId, "");
     }
 
     private void downloadResourcePackFuture(int requestId, String url, final String hash) {
         Futures.addCallback(downloadResourcePack(requestId, url, hash), new FutureCallback() {
             @Override
             public void onSuccess(Object result) {
-                mc.getNetHandler().addToSendQueue(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.SUCCESSFULLY_LOADED));
+                mc.getConnection().sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.SUCCESSFULLY_LOADED));
             }
 
             @Override
             public void onFailure(@Nonnull Throwable throwable) {
-                mc.getNetHandler().addToSendQueue(new C19PacketResourcePackStatus(hash, C19PacketResourcePackStatus.Action.FAILED_DOWNLOAD));
+                mc.getConnection().sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.FAILED_DOWNLOAD));
             }
         });
     }
@@ -186,7 +190,7 @@ public class ResourcePackRecorder {
 
             Futures.getUnchecked(mc.addScheduledTask(() -> mc.displayGuiScreen(guiScreen)));
 
-            Map<String, String> sessionInfo = Minecraft.getSessionInfo();
+            Map<String, String> sessionInfo = ResourcePackRepository.getDownloadHeaders();
             repo.downloadingPacks = HttpUtil.downloadResourcePack(file, url, sessionInfo, 50 * 1024 * 1024, guiScreen, mc.getProxy());
             Futures.addCallback(repo.downloadingPacks, new FutureCallback<Object>() {
                 @Override

src/main/java/com/replaymod/render/ReplayModRender.java

@@ -5,8 +5,8 @@ import com.replaymod.render.utils.RenderJob;
 import com.replaymod.replay.events.ReplayCloseEvent;
 import net.minecraft.crash.CrashReport;
 import net.minecraft.util.ReportedException;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.common.config.Configuration;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
@@ -45,7 +45,7 @@ public class ReplayModRender {
         core = ReplayMod.instance;
         configuration = new Configuration(event.getSuggestedConfigurationFile());
 
-        FMLCommonHandler.instance().bus().register(this);
+        MinecraftForge.EVENT_BUS.register(this);
 
         core.getSettingsRegistry().register(Setting.class);
     }

src/main/java/com/replaymod/render/gui/GuiRenderSettings.java

@@ -80,8 +80,8 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
                 }
             }).setMinSize(new Dimension(0, 20)).setValues(RenderSettings.EncodingPreset.values());
 
-    public final GuiNumberField videoWidth = new GuiNumberField().setSize(50, 20).setMinValue(1);
-    public final GuiNumberField videoHeight = new GuiNumberField().setSize(50, 20).setMinValue(1);
+    public final GuiNumberField videoWidth = new GuiNumberField().setSize(50, 20).setMinValue(1).setValidateOnFocusChange(true);
+    public final GuiNumberField videoHeight = new GuiNumberField().setSize(50, 20).setMinValue(1).setValidateOnFocusChange(true);
     public final GuiSlider frameRateSlider = new GuiSlider().onValueChanged(new Runnable() {
         @Override
         public void run() {
@@ -93,7 +93,7 @@ public class GuiRenderSettings extends GuiScreen implements Closeable {
             .setLayout(new HorizontalLayout(HorizontalLayout.Alignment.RIGHT).setSpacing(2))
             .addElements(new HorizontalLayout.Data(0.5), videoWidth, new GuiLabel().setText("*"), videoHeight);
 
-    public final GuiNumberField bitRateField = new GuiNumberField().setValue(10).setSize(50, 20);
+    public final GuiNumberField bitRateField = new GuiNumberField().setValue(10).setSize(50, 20).setValidateOnFocusChange(true);
     public final GuiDropdownMenu<String> bitRateUnit = new GuiDropdownMenu<String>()
             .setSize(50, 20).setValues("bps", "kbps", "mbps").setSelected("mbps");
 

src/main/java/com/replaymod/render/hooks/ChunkLoadingRenderGlobal.java

@@ -10,7 +10,7 @@ import net.minecraft.client.renderer.chunk.RenderChunk;
 
 import java.lang.reflect.Field;
 import java.util.Iterator;
-import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.PriorityBlockingQueue;
 
 public class ChunkLoadingRenderGlobal {
 
@@ -27,10 +27,10 @@ public class ChunkLoadingRenderGlobal {
         this.renderWorker = new CustomChunkRenderWorker(renderDispatcher, new RegionRenderCacheBuilder());
 
         int workerThreads = renderDispatcher.listThreadedWorkers.size();
-        BlockingQueue<ChunkCompileTaskGenerator> queueChunkUpdates = renderDispatcher.queueChunkUpdates;
+        PriorityBlockingQueue<ChunkCompileTaskGenerator> queueChunkUpdates = renderDispatcher.queueChunkUpdates;
         workerJailingQueue = new JailingQueue<>(queueChunkUpdates);
         renderDispatcher.queueChunkUpdates = workerJailingQueue;
-        ChunkCompileTaskGenerator element = new ChunkCompileTaskGenerator(null, null);
+        ChunkCompileTaskGenerator element = new ChunkCompileTaskGenerator(null, null, 0);
         element.finish();
         for (int i = 0; i < workerThreads; i++) {
             queueChunkUpdates.add(element);
@@ -68,7 +68,7 @@ public class ChunkLoadingRenderGlobal {
 
             renderDispatcher.updateChunkNow(renderchunk);
 
-            renderchunk.setNeedsUpdate(false);
+            renderchunk.clearNeedsUpdate();
             iterator.remove();
         }
     }

src/main/java/com/replaymod/render/mixin/MixinEffectRenderer.java

@@ -1,47 +0,0 @@
-package com.replaymod.render.mixin;
-
-import com.replaymod.render.hooks.EntityRendererHandler;
-import net.minecraft.client.Minecraft;
-import net.minecraft.client.particle.EffectRenderer;
-import net.minecraft.client.particle.EntityFX;
-import net.minecraft.client.renderer.WorldRenderer;
-import net.minecraft.entity.Entity;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Redirect;
-
-@Mixin(EffectRenderer.class)
-public abstract class MixinEffectRenderer {
-    @Redirect(method = "renderParticles", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/particle/EntityFX;renderParticle(Lnet/minecraft/client/renderer/WorldRenderer;Lnet/minecraft/entity/Entity;FFFFFF)V"))
-    private void renderNormalParticle(EntityFX fx, WorldRenderer worldRenderer, Entity view, float partialTicks,
-                                float rotX, float rotXZ, float rotZ, float rotYZ, float rotXY) {
-        renderParticle(fx, worldRenderer, view, partialTicks, rotX, rotXZ, rotZ, rotYZ, rotXY);
-    }
-
-    @Redirect(method = "renderLitParticles", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/particle/EntityFX;renderParticle(Lnet/minecraft/client/renderer/WorldRenderer;Lnet/minecraft/entity/Entity;FFFFFF)V"))
-    private void renderLitParticle(EntityFX fx, WorldRenderer worldRenderer, Entity view, float partialTicks,
-                                 float rotX, float rotXZ, float rotZ, float rotYZ, float rotXY) {
-        renderParticle(fx, worldRenderer, view, partialTicks, rotX, rotXZ, rotZ, rotYZ, rotXY);
-    }
-
-    private void renderParticle(EntityFX fx, WorldRenderer worldRenderer, Entity view, float partialTicks,
-                                 float rotX, float rotXZ, float rotZ, float rotYZ, float rotXY) {
-        EntityRendererHandler handler = ((EntityRendererHandler.IEntityRenderer) Minecraft.getMinecraft().entityRenderer).replayModRender_getHandler();
-        if (handler != null && handler.omnidirectional) {
-            // Align all particles towards the camera
-            double dx = fx.prevPosX + (fx.posX - fx.prevPosX) * partialTicks - view.posX;
-            double dy = fx.prevPosY + (fx.posY - fx.prevPosY) * partialTicks - view.posY;
-            double dz = fx.prevPosZ + (fx.posZ - fx.prevPosZ) * partialTicks - view.posZ;
-            double pitch = -Math.atan2(dy, Math.sqrt(dx * dx + dz * dz));
-            double yaw = -Math.atan2(dx, dz);
-
-            rotX = (float) Math.cos(yaw);
-            rotZ = (float) Math.sin(yaw);
-            rotXZ = (float) Math.cos(pitch);
-
-            rotYZ = (float) (-rotZ * Math.sin(pitch));
-            rotXY = (float) (rotX * Math.sin(pitch));
-        }
-        fx.renderParticle(worldRenderer, view, partialTicks, rotX, rotXZ, rotZ, rotYZ, rotXY);
-    }
-}

src/main/java/com/replaymod/render/mixin/MixinEntityRenderer.java

@@ -12,7 +12,7 @@ import net.minecraft.client.renderer.RenderGlobal;
 import net.minecraft.client.settings.GameSettings;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.util.MovingObjectPosition;
+import net.minecraft.util.math.RayTraceResult;
 import org.lwjgl.opengl.GL11;
 import org.lwjgl.util.ReadableColor;
 import org.lwjgl.util.glu.Project;
@@ -118,10 +118,10 @@ public abstract class MixinEntityRenderer implements EntityRendererHandler.IEnti
     @Shadow
     public abstract void renderHand(float partialTicks, int renderPass);
 
-    @Redirect(method = "renderWorldPass", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/RenderGlobal;drawSelectionBox(Lnet/minecraft/entity/player/EntityPlayer;Lnet/minecraft/util/MovingObjectPosition;IF)V"))
-    private void replayModRender_drawSelectionBox(RenderGlobal instance, EntityPlayer player, MovingObjectPosition mop, int alwaysZero, float partialTicks) {
+    @Redirect(method = "renderWorldPass", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/RenderGlobal;drawSelectionBox(Lnet/minecraft/entity/player/EntityPlayer;Lnet/minecraft/util/math/RayTraceResult;IF)V"))
+    private void replayModRender_drawSelectionBox(RenderGlobal instance, EntityPlayer player, RayTraceResult rtr, int alwaysZero, float partialTicks) {
         if (replayModRender_handler == null) {
-            instance.drawSelectionBox(player, mop, alwaysZero, partialTicks);
+            instance.drawSelectionBox(player, rtr, alwaysZero, partialTicks);
         }
     }
 

src/main/java/com/replaymod/render/mixin/MixinParticleManager.java

@@ -0,0 +1,47 @@
+package com.replaymod.render.mixin;
+
+import com.replaymod.render.hooks.EntityRendererHandler;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.particle.Particle;
+import net.minecraft.client.particle.ParticleManager;
+import net.minecraft.client.renderer.VertexBuffer;
+import net.minecraft.entity.Entity;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(ParticleManager.class)
+public abstract class MixinParticleManager {
+    @Redirect(method = "renderParticles", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/particle/Particle;renderParticle(Lnet/minecraft/client/renderer/VertexBuffer;Lnet/minecraft/entity/Entity;FFFFFF)V"))
+    private void renderNormalParticle(Particle particle, VertexBuffer vertexBuffer, Entity view, float partialTicks,
+                                      float rotX, float rotXZ, float rotZ, float rotYZ, float rotXY) {
+        renderParticle(particle, vertexBuffer, view, partialTicks, rotX, rotXZ, rotZ, rotYZ, rotXY);
+    }
+
+    @Redirect(method = "renderLitParticles", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/particle/Particle;renderParticle(Lnet/minecraft/client/renderer/VertexBuffer;Lnet/minecraft/entity/Entity;FFFFFF)V"))
+    private void renderLitParticle(Particle particle, VertexBuffer vertexBuffer, Entity view, float partialTicks,
+                                 float rotX, float rotXZ, float rotZ, float rotYZ, float rotXY) {
+        renderParticle(particle, vertexBuffer, view, partialTicks, rotX, rotXZ, rotZ, rotYZ, rotXY);
+    }
+
+    private void renderParticle(Particle particle, VertexBuffer vertexBuffer, Entity view, float partialTicks,
+                                 float rotX, float rotXZ, float rotZ, float rotYZ, float rotXY) {
+        EntityRendererHandler handler = ((EntityRendererHandler.IEntityRenderer) Minecraft.getMinecraft().entityRenderer).replayModRender_getHandler();
+        if (handler != null && handler.omnidirectional) {
+            // Align all particles towards the camera
+            double dx = particle.prevPosX + (particle.posX - particle.prevPosX) * partialTicks - view.posX;
+            double dy = particle.prevPosY + (particle.posY - particle.prevPosY) * partialTicks - view.posY;
+            double dz = particle.prevPosZ + (particle.posZ - particle.prevPosZ) * partialTicks - view.posZ;
+            double pitch = -Math.atan2(dy, Math.sqrt(dx * dx + dz * dz));
+            double yaw = -Math.atan2(dx, dz);
+
+            rotX = (float) Math.cos(yaw);
+            rotZ = (float) Math.sin(yaw);
+            rotXZ = (float) Math.cos(pitch);
+
+            rotYZ = (float) (-rotZ * Math.sin(pitch));
+            rotXY = (float) (rotX * Math.sin(pitch));
+        }
+        particle.renderParticle(vertexBuffer, view, partialTicks, rotX, rotXZ, rotZ, rotYZ, rotXY);
+    }
+}

src/main/java/com/replaymod/render/mixin/MixinRender.java

@@ -7,15 +7,14 @@ import net.minecraft.entity.Entity;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 @Mixin(Render.class)
 public abstract class MixinRender {
-    @Inject(method = "canRenderName", at = @At("HEAD"), cancellable = true)
-    private void replayModRender_areAllNamesHidden(Entity entity, CallbackInfoReturnable<Boolean> ci) {
+    @Inject(method = "renderLivingLabel", at = @At("HEAD"), cancellable = true)
+    private void replayModRender_areAllNamesHidden(Entity entityIn, String str, double x, double y, double z, int maxDistance, CallbackInfo ci) {
         EntityRendererHandler handler = ((EntityRendererHandler.IEntityRenderer) Minecraft.getMinecraft().entityRenderer).replayModRender_getHandler();
         if (handler != null && !handler.getSettings().isRenderNameTags()) {
-            ci.setReturnValue(false);
             ci.cancel();
         }
     }

src/main/java/com/replaymod/render/mixin/MixinRenderGlobal.java

@@ -3,16 +3,13 @@ package com.replaymod.render.mixin;
 import com.replaymod.render.hooks.ChunkLoadingRenderGlobal;
 import net.minecraft.client.renderer.RenderGlobal;
 import net.minecraft.client.renderer.chunk.ChunkRenderDispatcher;
-import net.minecraft.client.renderer.chunk.RenderChunk;
 import net.minecraft.client.renderer.culling.ICamera;
 import net.minecraft.entity.Entity;
-import net.minecraft.util.BlockPos;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(RenderGlobal.class)
 public abstract class MixinRenderGlobal {
@@ -37,6 +34,8 @@ public abstract class MixinRenderGlobal {
 
             do {
                 setupTerrain(viewEntity, partialTicks, camera, replayModRender_hook.nextFrameId(), playerSpectator);
+
+                replayModRender_hook.updateChunks();
             } while (displayListEntitiesDirty);
 
             displayListEntitiesDirty = true;
@@ -46,13 +45,6 @@ public abstract class MixinRenderGlobal {
         }
     }
 
-    @Inject(method = "isPositionInRenderChunk", at = @At("HEAD"), cancellable = true)
-    public void replayModRender_isPositionInRenderChunk(BlockPos pos, RenderChunk chunk, CallbackInfoReturnable<Boolean> ci) {
-        if (replayModRender_hook != null) {
-            ci.setReturnValue(true);
-        }
-    }
-
     @Inject(method = "updateChunks", at = @At("HEAD"), cancellable = true)
     public void replayModRender_updateChunks(long finishTimeNano, CallbackInfo ci) {
         if (replayModRender_hook != null) {

src/main/java/com/replaymod/render/mixin/MixinRenderManager.java

@@ -8,7 +8,7 @@ import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 @Mixin(RenderManager.class)
 public abstract class MixinRenderManager {
@@ -19,7 +19,7 @@ public abstract class MixinRenderManager {
     private float playerViewY;
 
     @Inject(method = "doRenderEntity", at = @At("HEAD"))
-    private void replayModRender_reorientForCubicRendering(Entity entity, double dx, double dy, double dz, float iDoNotKnow, float partialTicks, boolean iDoNotCare, CallbackInfoReturnable ci) {
+    private void replayModRender_reorientForCubicRendering(Entity entity, double dx, double dy, double dz, float iDoNotKnow, float partialTicks, boolean iDoNotCare, CallbackInfo ci) {
         EntityRendererHandler handler = ((EntityRendererHandler.IEntityRenderer) Minecraft.getMinecraft().entityRenderer).replayModRender_getHandler();
         if (handler != null && handler.omnidirectional) {
             double pitch = -Math.atan2(dy, Math.sqrt(dx * dx + dz * dz));

src/main/java/com/replaymod/render/mixin/MixinRendererLivingEntity.java

@@ -1,21 +0,0 @@
-package com.replaymod.render.mixin;
-
-import com.replaymod.render.hooks.EntityRendererHandler;
-import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.entity.RendererLivingEntity;
-import net.minecraft.entity.EntityLivingBase;
-import org.spongepowered.asm.mixin.Mixin;
-import org.spongepowered.asm.mixin.injection.At;
-import org.spongepowered.asm.mixin.injection.Inject;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
-
-@Mixin(RendererLivingEntity.class)
-public abstract class MixinRendererLivingEntity {
-    @Inject(method = "canRenderName", at = @At("HEAD"), cancellable = true)
-    private void replayModRender_areAllNamesHidden(EntityLivingBase entity, CallbackInfoReturnable<Boolean> ci) {
-        EntityRendererHandler handler = ((EntityRendererHandler.IEntityRenderer) Minecraft.getMinecraft().entityRenderer).replayModRender_getHandler();
-        if (handler != null && !handler.getSettings().isRenderNameTags()) {
-            ci.setReturnValue(false); //this calls the cancel method
-        }
-    }
-}

src/main/java/com/replaymod/render/rendering/VideoRenderer.java

@@ -1,6 +1,5 @@
 package com.replaymod.render.rendering;
 
-import com.replaymod.core.ReplayMod;
 import com.replaymod.pathing.player.AbstractTimelinePlayer;
 import com.replaymod.pathing.player.ReplayTimer;
 import com.replaymod.pathing.properties.TimestampProperty;
@@ -14,17 +13,18 @@ import com.replaymod.render.gui.GuiRenderingDone;
 import com.replaymod.render.gui.GuiVideoRenderer;
 import com.replaymod.render.hooks.ChunkLoadingRenderGlobal;
 import com.replaymod.render.metadata.MetadataInjector;
+import com.replaymod.render.utils.SoundHandler;
 import com.replaymod.replay.ReplayHandler;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
 import com.replaymod.replaystudio.pathing.path.Path;
 import com.replaymod.replaystudio.pathing.path.Timeline;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.audio.SoundCategory;
 import net.minecraft.client.gui.ScaledResolution;
 import net.minecraft.client.renderer.OpenGlHelper;
 import net.minecraft.client.shader.Framebuffer;
+import net.minecraft.util.SoundCategory;
 import net.minecraft.util.Timer;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import org.lwjgl.input.Mouse;
 import org.lwjgl.opengl.Display;
 import org.lwjgl.util.Dimension;
@@ -54,7 +54,7 @@ public class VideoRenderer implements RenderInfo {
     private int fps;
     private boolean mouseWasGrabbed;
     private boolean debugInfoWasShown;
-    private Map originalSoundLevels;
+    private Map<SoundCategory, Float> originalSoundLevels;
 
     private TimelinePlayer timelinePlayer;
     private Future<Void> timelinePlayerFuture;
@@ -90,7 +90,7 @@ public class VideoRenderer implements RenderInfo {
      * @return {@code true} if rendering was successful, {@code false} if the user aborted rendering (or the window was closed)
      */
     public boolean renderVideo() {
-        FMLCommonHandler.instance().bus().post(new ReplayRenderEvent.Pre(this));
+        MinecraftForge.EVENT_BUS.post(new ReplayRenderEvent.Pre(this));
 
         setup();
 
@@ -136,7 +136,7 @@ public class VideoRenderer implements RenderInfo {
 
         finish();
 
-        FMLCommonHandler.instance().bus().post(new ReplayRenderEvent.Post(this));
+        MinecraftForge.EVENT_BUS.post(new ReplayRenderEvent.Post(this));
 
         return !cancelled;
     }
@@ -196,9 +196,9 @@ public class VideoRenderer implements RenderInfo {
         for (SoundCategory category : SoundCategory.values()) {
             mutedSounds.put(category, 0f);
         }
-        originalSoundLevels = mc.gameSettings.mapSoundLevels;
-        mutedSounds.put(SoundCategory.MASTER, (Float) originalSoundLevels.get(SoundCategory.MASTER));
-        mc.gameSettings.mapSoundLevels = mutedSounds;
+        originalSoundLevels = mc.gameSettings.soundLevels;
+        mutedSounds.put(SoundCategory.MASTER, originalSoundLevels.get(SoundCategory.MASTER));
+        mc.gameSettings.soundLevels = mutedSounds;
 
         fps = settings.getFramesPerSecond();
 
@@ -219,9 +219,6 @@ public class VideoRenderer implements RenderInfo {
 
         updateDisplaySize();
 
-        ScaledResolution scaled = new ScaledResolution(mc);
-        gui.toMinecraft().setWorldAndResolution(mc, scaled.getScaledWidth(), scaled.getScaledHeight());
-
         chunkLoadingRenderGlobal = new ChunkLoadingRenderGlobal(mc.renderGlobal);
 
         // Set up our own framebuffer to render the GUI to
@@ -242,13 +239,13 @@ public class VideoRenderer implements RenderInfo {
         if (mouseWasGrabbed) {
             mc.mouseHelper.grabMouseCursor();
         }
-        mc.gameSettings.mapSoundLevels = originalSoundLevels;
+        mc.gameSettings.soundLevels = originalSoundLevels;
         mc.displayGuiScreen(null);
         if (chunkLoadingRenderGlobal != null) {
             chunkLoadingRenderGlobal.uninstall();
         }
 
-        ReplayMod.soundHandler.playRenderSuccessSound();
+        new SoundHandler().playRenderSuccessSound();
 
         new GuiRenderingDone(ReplayModRender.instance, videoWriter.getVideoFile(), totalFrames, settings).display();
 

src/main/java/com/replaymod/render/utils/JailingQueue.java

@@ -2,15 +2,18 @@ package com.replaymod.render.utils;
 
 import com.google.common.base.Preconditions;
 
-import java.util.*;
-import java.util.concurrent.BlockingQueue;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+import java.util.concurrent.PriorityBlockingQueue;
 import java.util.concurrent.TimeUnit;
 
-public class JailingQueue<T> extends AbstractQueue<T> implements BlockingQueue<T> {
-    private final BlockingQueue<T> delegate;
+public class JailingQueue<T> extends PriorityBlockingQueue<T> {
+    private final PriorityBlockingQueue<T> delegate;
     private final Set<Thread> jailed = new HashSet<Thread>();
 
-    public JailingQueue(BlockingQueue<T> delegate) {
+    public JailingQueue(PriorityBlockingQueue<T> delegate) {
         this.delegate = delegate;
     }
 
@@ -59,13 +62,13 @@ public class JailingQueue<T> extends AbstractQueue<T> implements BlockingQueue<T
     }
 
     @Override
-    public void put(T t) throws InterruptedException {
+    public void put(T t) {
         tryAccess();
         delegate.put(t);
     }
 
     @Override
-    public boolean offer(T t, long timeout, TimeUnit unit) throws InterruptedException {
+    public boolean offer(T t, long timeout, TimeUnit unit) {
         tryAccess();
         return delegate.offer(t, timeout, unit);
     }

src/main/java/com/replaymod/replay/InputReplayTimer.java

@@ -143,10 +143,11 @@ public class InputReplayTimer extends WrappedTimer {
 
                 // Following are a ton of vanilla keyboard shortcuts, some are removed as they're useless in the
                 // replay viewer as of now
+                // TODO Update maybe add new key bindings
                 // TODO: Translate magic values to Keyboard.KEY_ constants
 
                 if (key == 32 && Keyboard.isKeyDown(61) && mc.ingameGUI != null) {
-                    mc.ingameGUI.getChatGUI().clearChatMessages();
+                    mc.ingameGUI.getChatGUI().clearChatMessages(false);
                 }
 
                 if (key == 31 && Keyboard.isKeyDown(61)) {

src/main/java/com/replaymod/replay/ReplayHandler.java

@@ -23,8 +23,8 @@ import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.network.EnumPacketDirection;
 import net.minecraft.network.NetworkManager;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.client.FMLClientHandler;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.network.handshake.NetworkDispatcher;
 import org.lwjgl.opengl.Display;
 
@@ -76,7 +76,7 @@ public class ReplayHandler {
         Preconditions.checkState(mc.isCallingFromMinecraftThread(), "Must be called from Minecraft thread.");
         this.replayFile = replayFile;
 
-        FMLCommonHandler.instance().bus().post(new ReplayOpenEvent.Pre(this));
+        MinecraftForge.EVENT_BUS.post(new ReplayOpenEvent.Pre(this));
 
         markers = new ArrayList<>(replayFile.getMarkers().or(Collections.emptySet()));
 
@@ -87,7 +87,7 @@ public class ReplayHandler {
         overlay = new GuiReplayOverlay(this);
         overlay.setVisible(true);
 
-        FMLCommonHandler.instance().bus().post(new ReplayOpenEvent.Post(this));
+        MinecraftForge.EVENT_BUS.post(new ReplayOpenEvent.Post(this));
     }
 
     void restartedReplay() {
@@ -101,7 +101,7 @@ public class ReplayHandler {
     public void endReplay() throws IOException {
         Preconditions.checkState(mc.isCallingFromMinecraftThread(), "Must be called from Minecraft thread.");
 
-        FMLCommonHandler.instance().bus().post(new ReplayCloseEvent.Pre(this));
+        MinecraftForge.EVENT_BUS.post(new ReplayCloseEvent.Pre(this));
 
         replaySender.terminateReplay();
 
@@ -110,12 +110,12 @@ public class ReplayHandler {
 
         channel.close().awaitUninterruptibly();
 
-        if (mc.thePlayer instanceof CameraEntity) {
-            mc.thePlayer.setDead();
+        if (mc.player instanceof CameraEntity) {
+            mc.player.setDead();
         }
 
-        if (mc.theWorld != null) {
-            mc.theWorld.sendQuittingDisconnectingPacket();
+        if (mc.world != null) {
+            mc.world.sendQuittingDisconnectingPacket();
             mc.loadWorld(null);
         }
 
@@ -124,11 +124,11 @@ public class ReplayHandler {
 
         ReplayModReplay.instance.replayHandler = null;
 
-        FMLCommonHandler.instance().bus().post(new ReplayCloseEvent.Post(this));
+        MinecraftForge.EVENT_BUS.post(new ReplayCloseEvent.Post(this));
     }
 
     private void setup() {
-        mc.ingameGUI.getChatGUI().clearChatMessages();
+        mc.ingameGUI.getChatGUI().clearChatMessages(true);
 
         NetworkManager networkManager = new NetworkManager(EnumPacketDirection.CLIENTBOUND) {
             @Override
@@ -241,7 +241,7 @@ public class ReplayHandler {
      * @return {@code true} if the camera is the view entity, {@code false} otherwise
      */
     public boolean isCameraView() {
-        return mc.thePlayer instanceof CameraEntity && mc.thePlayer == mc.getRenderViewEntity();
+        return mc.player instanceof CameraEntity && mc.player == mc.getRenderViewEntity();
     }
 
     /**
@@ -249,7 +249,7 @@ public class ReplayHandler {
      * @return The camera entity or {@code null} if it does not yet exist
      */
     public CameraEntity getCameraEntity() {
-        return mc.thePlayer instanceof CameraEntity ? (CameraEntity) mc.thePlayer : null;
+        return mc.player instanceof CameraEntity ? (CameraEntity) mc.player : null;
     }
 
     public UUID getSpectatedUUID() {
@@ -328,8 +328,8 @@ public class ReplayHandler {
                 replaySender.setAsyncMode(true);
                 replaySender.setReplaySpeed(0);
 
-                mc.getNetHandler().getNetworkManager().processReceivedPackets();
-                for (Entity entity : mc.theWorld.loadedEntityList) {
+                mc.getConnection().getNetworkManager().processReceivedPackets();
+                for (Entity entity : mc.world.loadedEntityList) {
                     if (entity instanceof EntityOtherPlayerMP) {
                         EntityOtherPlayerMP e = (EntityOtherPlayerMP) entity;
                         e.setPosition(e.otherPlayerMPX, e.otherPlayerMPY, e.otherPlayerMPZ);

src/main/java/com/replaymod/replay/ReplaySender.java

@@ -12,17 +12,22 @@ import io.netty.channel.ChannelHandler.Sharable;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.entity.EntityOtherPlayerMP;
 import net.minecraft.client.gui.GuiDownloadTerrain;
 import net.minecraft.client.gui.GuiErrorScreen;
 import net.minecraft.client.resources.I18n;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.network.*;
 import net.minecraft.network.play.server.*;
-import net.minecraft.util.IChatComponent;
+import net.minecraft.util.text.ITextComponent;
 import net.minecraft.world.EnumDifficulty;
+import net.minecraft.world.GameType;
 import net.minecraft.world.World;
-import net.minecraft.world.WorldSettings.GameType;
 import net.minecraft.world.WorldType;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.common.gameevent.TickEvent;
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
 
@@ -39,30 +44,22 @@ import java.util.concurrent.Callable;
  */
 @Sharable
 public class ReplaySender extends ChannelInboundHandlerAdapter {
-
-    /**
-     * Previously packets for the client player were inserted using one fixed entity id (this one).
-     * This is no longer the case however to provide backwards compatibility, we have to convert
-     * these old packets to use the normal entity id.
-     * Need to punch someone? -> CrushedPixel
-     */
-    public static final int LEGACY_ENTITY_ID = Integer.MIN_VALUE + 9001;
-
     /**
      * These packets are ignored completely during replay.
      */
     private static final List<Class> BAD_PACKETS = Arrays.<Class>asList(
-            S06PacketUpdateHealth.class,
-            S2DPacketOpenWindow.class,
-            S2EPacketCloseWindow.class,
-            S2FPacketSetSlot.class,
-            S30PacketWindowItems.class,
-            S36PacketSignEditorOpen.class,
-            S37PacketStatistics.class,
-            S1FPacketSetExperience.class,
-            S43PacketCamera.class,
-            S39PacketPlayerAbilities.class,
-            S45PacketTitle.class);
+            // TODO Update possibly more?
+            SPacketUpdateHealth.class,
+            SPacketOpenWindow.class,
+            SPacketCloseWindow.class,
+            SPacketSetSlot.class,
+            SPacketWindowItems.class,
+            SPacketSignEditorOpen.class,
+            SPacketStatistics.class,
+            SPacketSetExperience.class,
+            SPacketCamera.class,
+            SPacketPlayerAbilities.class,
+            SPacketTitle.class);
 
     private static int TP_DISTANCE_LIMIT = 128;
 
@@ -171,6 +168,8 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
         this.asyncMode = asyncMode;
         this.replayLength = file.getMetaData().getDuration();
 
+        MinecraftForge.EVENT_BUS.register(this);
+
         if (asyncMode) {
             new Thread(asyncSender, "replaymod-async-sender").start();
         }
@@ -239,6 +238,7 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
      */
     public void terminateReplay() {
         terminate = true;
+        MinecraftForge.EVENT_BUS.unregister(this);
         try {
             channelInactive(ctx);
             ctx.channel().pipeline().close();
@@ -247,6 +247,25 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
         }
     }
 
+    @SubscribeEvent
+    public void onWorldTick(TickEvent.ClientTickEvent event) {
+        // Unfortunately the WorldTickEvent doesn't seem to be emitted on the CLIENT side
+        if (event.phase != TickEvent.Phase.START) return;
+
+        // Spawning a player into an empty chunk (which we might do with the recording player)
+        // prevents it from being moved by teleport packets (it essentially gets stuck) because
+        // Entity#addedToChunk is not set and it is therefore not updated every tick.
+        // To counteract this, we need to manually update it's position if it hasn't been added
+        // to any chunk yet.
+        if (mc.world != null) {
+            for (EntityPlayer playerEntity : mc.world.playerEntities) {
+                if (!playerEntity.addedToChunk && playerEntity instanceof EntityOtherPlayerMP) {
+                    playerEntity.onLivingUpdate();
+                }
+            }
+        }
+    }
+
     @Override
     public void channelRead(ChannelHandlerContext ctx, Object msg)
             throws Exception {
@@ -273,22 +292,22 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
                     // If we do not give minecraft time to tick, there will be dead entity artifacts left in the world
                     // Therefore we have to remove all loaded, dead entities manually if we are in sync mode.
                     // We do this after every SpawnX packet and after the destroy entities packet.
-                    if (!asyncMode && mc.theWorld != null) {
-                        if (p instanceof S0CPacketSpawnPlayer
-                                || p instanceof S0EPacketSpawnObject
-                                || p instanceof S0FPacketSpawnMob
-                                || p instanceof S2CPacketSpawnGlobalEntity
-                                || p instanceof S10PacketSpawnPainting
-                                || p instanceof S11PacketSpawnExperienceOrb
-                                || p instanceof S13PacketDestroyEntities) {
-                            World world = mc.theWorld;
+                    if (!asyncMode && mc.world != null) {
+                        if (p instanceof SPacketSpawnPlayer
+                                || p instanceof SPacketSpawnObject
+                                || p instanceof SPacketSpawnMob
+                                || p instanceof SPacketSpawnGlobalEntity
+                                || p instanceof SPacketSpawnPainting
+                                || p instanceof SPacketSpawnExperienceOrb
+                                || p instanceof SPacketDestroyEntities) {
+                            World world = mc.world;
                             for (int i = 0; i < world.loadedEntityList.size(); ++i) {
-                                Entity entity = (Entity) world.loadedEntityList.get(i);
+                                Entity entity = world.loadedEntityList.get(i);
                                 if (entity.isDead) {
                                     int chunkX = entity.chunkCoordX;
                                     int chunkY = entity.chunkCoordZ;
 
-                                    if (entity.addedToChunk && world.getChunkProvider().chunkExists(chunkX, chunkY)) {
+                                    if (entity.addedToChunk && world.getChunkProvider().getLoadedChunk(chunkX, chunkY) != null) {
                                         world.getChunkFromChunkCoords(chunkX, chunkY).removeEntity(entity);
                                     }
 
@@ -312,7 +331,7 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
         ByteBuf bb = Unpooled.wrappedBuffer(bytes);
         PacketBuffer pb = new PacketBuffer(bb);
 
-        int i = pb.readVarIntFromBuffer();
+        int i = pb.readVarInt();
 
         Packet p = EnumConnectionState.PLAY.getPacket(EnumPacketDirection.CLIENTBOUND, i);
         p.readPacketData(pb);
@@ -326,8 +345,8 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
      * @return The processed packet or {@code null} if no packet shall be sent
      */
     protected Packet processPacket(Packet p) throws Exception {
-        if (p instanceof S3FPacketCustomPayload) {
-            S3FPacketCustomPayload packet = (S3FPacketCustomPayload) p;
+        if (p instanceof SPacketCustomPayload) {
+            SPacketCustomPayload packet = (SPacketCustomPayload) p;
             if (Restrictions.PLUGIN_CHANNEL.equals(packet.getChannelName())) {
                 final String unknown = replayHandler.getRestrictions().handle(packet);
                 if (unknown == null) {
@@ -353,8 +372,8 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
                 }
             }
         }
-        if (p instanceof S40PacketDisconnect) {
-            IChatComponent reason = ((S40PacketDisconnect) p).getReason();
+        if (p instanceof SPacketDisconnect) {
+            ITextComponent reason = ((SPacketDisconnect) p).getReason();
             if ("Please update to view this replay.".equals(reason.getUnformattedText())) {
                 // This version of the mod supports replay restrictions so we are allowed
                 // to remove this packet.
@@ -364,10 +383,8 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
 
         if(BAD_PACKETS.contains(p.getClass())) return null;
 
-        convertLegacyEntityIds(p);
-
-        if(p instanceof S48PacketResourcePackSend) {
-            S48PacketResourcePackSend packet = (S48PacketResourcePackSend) p;
+        if(p instanceof SPacketResourcePackSend) {
+            SPacketResourcePackSend packet = (SPacketResourcePackSend) p;
             String url = packet.getURL();
             if (url.startsWith("replay://")) {
                 int id = Integer.parseInt(url.substring("replay://".length()));
@@ -386,10 +403,10 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
             }
         }
 
-        if(p instanceof S01PacketJoinGame) {
-            S01PacketJoinGame packet = (S01PacketJoinGame) p;
+        if(p instanceof SPacketJoinGame) {
+            SPacketJoinGame packet = (SPacketJoinGame) p;
             allowMovement = true;
-            int entId = packet.getEntityId();
+            int entId = packet.getPlayerId();
             actualID = entId;
             entId = -1789435; // Camera entity id should be negative which is an invalid id and can't be used by servers
             int dimension = packet.getDimension();
@@ -397,21 +414,21 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
             int maxPlayers = packet.getMaxPlayers();
             WorldType worldType = packet.getWorldType();
 
-            p = new S01PacketJoinGame(entId, GameType.SPECTATOR, false, dimension,
+            p = new SPacketJoinGame(entId, GameType.SPECTATOR, false, dimension,
                     difficulty, maxPlayers, worldType, false);
         }
 
-        if(p instanceof S07PacketRespawn) {
-            S07PacketRespawn respawn = (S07PacketRespawn) p;
-            p = new S07PacketRespawn(respawn.getDimensionID(),
+        if(p instanceof SPacketRespawn) {
+            SPacketRespawn respawn = (SPacketRespawn) p;
+            p = new SPacketRespawn(respawn.getDimensionID(),
                     respawn.getDifficulty(), respawn.getWorldType(), GameType.SPECTATOR);
 
             allowMovement = true;
         }
 
-        if(p instanceof S08PacketPlayerPosLook) {
+        if(p instanceof SPacketPlayerPosLook) {
             if(!hasWorldLoaded) hasWorldLoaded = true;
-            final S08PacketPlayerPosLook ppl = (S08PacketPlayerPosLook) p;
+            final SPacketPlayerPosLook ppl = (SPacketPlayerPosLook) p;
 
             if (mc.currentScreen instanceof GuiDownloadTerrain) {
                 // Close the world loading screen manually in case we swallow the packet
@@ -422,10 +439,10 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
 
             CameraEntity cent = replayHandler.getCameraEntity();
 
-            for (Object relative : ppl.func_179834_f()) {
-                if (relative == S08PacketPlayerPosLook.EnumFlags.X
-                        || relative == S08PacketPlayerPosLook.EnumFlags.Y
-                        || relative == S08PacketPlayerPosLook.EnumFlags.Z) {
+            for (SPacketPlayerPosLook.EnumFlags relative : ppl.getFlags()) {
+                if (relative == SPacketPlayerPosLook.EnumFlags.X
+                        || relative == SPacketPlayerPosLook.EnumFlags.Y
+                        || relative == SPacketPlayerPosLook.EnumFlags.Z) {
                     return null; // At least one of the coordinates is relative, so we don't care
                 }
             }
@@ -443,7 +460,7 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
                 @Override
                 @SuppressWarnings("unchecked")
                 public Void call() {
-                    if (mc.theWorld == null || !mc.isCallingFromMinecraftThread()) {
+                    if (mc.world == null || !mc.isCallingFromMinecraftThread()) {
                         synchronized(mc.scheduledTasks) {
                             mc.scheduledTasks.add(ListenableFutureTask.create(this));
                         }
@@ -457,8 +474,8 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
             }.call();
         }
 
-        if(p instanceof S2BPacketChangeGameState) {
-            S2BPacketChangeGameState pg = (S2BPacketChangeGameState)p;
+        if(p instanceof SPacketChangeGameState) {
+            SPacketChangeGameState pg = (SPacketChangeGameState)p;
             int reason = pg.getGameState();
 
             // only allow the following packets:
@@ -473,7 +490,7 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
             }
         }
 
-        if (p instanceof S02PacketChat) {
+        if (p instanceof SPacketChat) {
             if (!ReplayModReplay.instance.getCore().getSettingsRegistry().get(Setting.SHOW_CHAT)) {
                 return null;
             }
@@ -486,7 +503,7 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
     @SuppressWarnings("unchecked")
     public void channelActive(ChannelHandlerContext ctx) throws Exception {
         this.ctx = ctx;
-        ctx.attr(NetworkManager.attrKeyConnectionState).set(EnumConnectionState.PLAY);
+        ctx.attr(NetworkManager.PROTOCOL_ATTRIBUTE_KEY).set(EnumConnectionState.PLAY);
         super.channelActive(ctx);
     }
 
@@ -691,10 +708,10 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
     protected Packet processPacketAsync(Packet p) {
         //If hurrying, ignore some packets, except for short durations
         if(desiredTimeStamp - lastTimeStamp > 1000) {
-            if(p instanceof S2APacketParticles) return null;
+            if(p instanceof SPacketParticles) return null;
 
-            if(p instanceof S0EPacketSpawnObject) {
-                S0EPacketSpawnObject pso = (S0EPacketSpawnObject)p;
+            if(p instanceof SPacketSpawnObject) {
+                SPacketSpawnObject pso = (SPacketSpawnObject)p;
                 int type = pso.getType();
                 if(type == 76) { // Firework rocket
                     return null;
@@ -781,68 +798,6 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
         return p; // During synchronous playback everything is sent normally
     }
 
-    /**
-     * This is necessary to convert packets from old replays to new replays.
-     * @param packet The packet to be transformed.
-     * @see #LEGACY_ENTITY_ID
-     */
-    private void convertLegacyEntityIds(Packet packet) {
-        if (packet instanceof S0CPacketSpawnPlayer) {
-            S0CPacketSpawnPlayer p = (S0CPacketSpawnPlayer) packet;
-            if (p.entityId == LEGACY_ENTITY_ID) {
-                p.entityId = actualID;
-            }
-        } else if (packet instanceof S18PacketEntityTeleport) {
-            S18PacketEntityTeleport p = (S18PacketEntityTeleport) packet;
-            if (p.entityId == LEGACY_ENTITY_ID) {
-                p.entityId = actualID;
-            }
-        } else if (packet instanceof S14PacketEntity.S17PacketEntityLookMove) {
-            S14PacketEntity.S17PacketEntityLookMove p = (S14PacketEntity.S17PacketEntityLookMove) packet;
-            if (p.entityId == LEGACY_ENTITY_ID) {
-                p.entityId = actualID;
-            }
-        } else if (packet instanceof S19PacketEntityHeadLook) {
-            S19PacketEntityHeadLook p = (S19PacketEntityHeadLook) packet;
-            if (p.entityId == LEGACY_ENTITY_ID) {
-                p.entityId = actualID;
-            }
-        } else if (packet instanceof S12PacketEntityVelocity) {
-            S12PacketEntityVelocity p = (S12PacketEntityVelocity) packet;
-            if (p.entityID == LEGACY_ENTITY_ID) {
-                p.entityID = actualID;
-            }
-        } else if (packet instanceof S0BPacketAnimation) {
-            S0BPacketAnimation p = (S0BPacketAnimation) packet;
-            if (p.entityId == LEGACY_ENTITY_ID) {
-                p.entityId = actualID;
-            }
-        } else if (packet instanceof S04PacketEntityEquipment) {
-            S04PacketEntityEquipment p = (S04PacketEntityEquipment) packet;
-            if (p.entityID == LEGACY_ENTITY_ID) {
-                p.entityID = actualID;
-            }
-        } else if (packet instanceof S1BPacketEntityAttach) {
-            S1BPacketEntityAttach p = (S1BPacketEntityAttach) packet;
-            if (p.entityId == LEGACY_ENTITY_ID) {
-                p.entityId = actualID;
-            }
-            if (p.vehicleEntityId == LEGACY_ENTITY_ID) {
-                p.vehicleEntityId = actualID;
-            }
-        } else if (packet instanceof S0DPacketCollectItem) {
-            S0DPacketCollectItem p = (S0DPacketCollectItem) packet;
-            if (p.entityId == LEGACY_ENTITY_ID) {
-                p.entityId = actualID;
-            }
-        } else if (packet instanceof S13PacketDestroyEntities) {
-            S13PacketDestroyEntities p = (S13PacketDestroyEntities) packet;
-            if (p.entityIDs.length == 1 && p.entityIDs[0] == LEGACY_ENTITY_ID) {
-                p.entityIDs[0] = actualID;
-            }
-        }
-    }
-
     private static final class PacketData {
         private final int timestamp;
         private final byte[] bytes;

src/main/java/com/replaymod/replay/camera/CameraEntity.java

@@ -18,16 +18,17 @@ import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.item.EntityItemFrame;
 import net.minecraft.entity.player.EntityPlayer;
-import net.minecraft.stats.StatFileWriter;
-import net.minecraft.util.AxisAlignedBB;
-import net.minecraft.util.MovingObjectPosition;
+import net.minecraft.inventory.EntityEquipmentSlot;
+import net.minecraft.stats.StatisticsManager;
+import net.minecraft.util.EnumHand;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.RayTraceResult;
 import net.minecraft.world.World;
 import net.minecraftforge.client.event.EntityViewRenderEvent;
 import net.minecraftforge.client.event.RenderGameOverlayEvent;
 import net.minecraftforge.client.event.RenderHandEvent;
 import net.minecraftforge.common.MinecraftForge;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.eventhandler.EventPriority;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.TickEvent;
@@ -38,7 +39,7 @@ import java.util.function.Function;
 
 /**
  * The camera entity used as the main player entity during replay viewing.
- * During a replay {@link Minecraft#thePlayer} should be an instance of this class.
+ * During a replay {@link Minecraft#player} should be an instance of this class.
  * Camera movement is controlled by a separate {@link CameraController}.
  */
 public class CameraEntity extends EntityPlayerSP {
@@ -65,9 +66,8 @@ public class CameraEntity extends EntityPlayerSP {
      */
     private final EventHandler eventHandler = new EventHandler();
 
-    public CameraEntity(Minecraft mcIn, World worldIn, NetHandlerPlayClient netHandlerPlayClient, StatFileWriter statFileWriter) {
-        super(mcIn, worldIn, netHandlerPlayClient, statFileWriter);
-        FMLCommonHandler.instance().bus().register(eventHandler);
+    public CameraEntity(Minecraft mcIn, World worldIn, NetHandlerPlayClient netHandlerPlayClient, StatisticsManager statisticsManager) {
+        super(mcIn, worldIn, netHandlerPlayClient, statisticsManager);
         MinecraftForge.EVENT_BUS.register(eventHandler);
         if (ReplayModReplay.instance.getReplayHandler().getSpectatedUUID() == null) {
             cameraController = ReplayModReplay.instance.createCameraController(this);
@@ -156,9 +156,9 @@ public class CameraEntity extends EntityPlayerSP {
             // entity is recreated and we have to spectate a new entity
             UUID spectating = ReplayModReplay.instance.getReplayHandler().getSpectatedUUID();
             if (spectating != null && (view.getUniqueID() != spectating
-                    || view.worldObj != worldObj)
-                    || worldObj.getEntityByID(view.getEntityId()) != view) {
-                view = worldObj.getPlayerEntityByUUID(spectating);
+                    || view.world != world)
+                    || world.getEntityByID(view.getEntityId()) != view) {
+                view = world.getPlayerEntityByUUID(spectating);
                 if (view != null) {
                     mc.setRenderViewEntity(view);
                 } else {
@@ -177,17 +177,17 @@ public class CameraEntity extends EntityPlayerSP {
     @Override
     public void preparePlayerToSpawn() {
         // Make sure our world is up-to-date in case of world changes
-        if (mc.theWorld != null) {
-            worldObj = mc.theWorld;
+        if (mc.world != null) {
+            world = mc.world;
         }
         super.preparePlayerToSpawn();
     }
 
     @Override
-    public void setAngles(float yaw, float pitch) {
+    public void setRotation(float yaw, float pitch) {
         if (mc.getRenderViewEntity() == this) {
             // Only update camera rotation when the camera is the view
-            super.setAngles(yaw, pitch);
+            super.setRotation(yaw, pitch);
         }
     }
 
@@ -252,6 +252,15 @@ public class CameraEntity extends EntityPlayerSP {
         return false;
     }
 
+    @Override
+    public boolean isInvisible() {
+        Entity view = mc.getRenderViewEntity();
+        if (view != this) {
+            return view.isInvisible();
+        }
+        return super.isInvisible();
+    }
+
     @Override
     public ResourceLocation getLocationSkin() {
         Entity view = mc.getRenderViewEntity();
@@ -280,12 +289,49 @@ public class CameraEntity extends EntityPlayerSP {
     }
 
     @Override
-    public MovingObjectPosition rayTrace(double p_174822_1_, float p_174822_3_) {
-        MovingObjectPosition pos = super.rayTrace(p_174822_1_, 1f);
+    public float getCooldownPeriod() {
+        Entity view = mc.getRenderViewEntity();
+        if (view != this && view instanceof EntityPlayer) {
+            return ((EntityPlayer) view).getCooldownPeriod();
+        }
+        return 1;
+    }
+
+    @Override
+    public float getCooledAttackStrength(float adjustTicks) {
+        Entity view = mc.getRenderViewEntity();
+        if (view != this && view instanceof EntityPlayer) {
+            return ((EntityPlayer) view).getCooledAttackStrength(adjustTicks);
+        }
+        // Default to 1 as to not render the cooldown indicator (renders for < 1)
+        return 1;
+    }
+
+    @Override
+    public EnumHand getActiveHand() {
+        Entity view = mc.getRenderViewEntity();
+        if (view != this && view instanceof EntityPlayer) {
+            return ((EntityPlayer) view).getActiveHand();
+        }
+        return super.getActiveHand();
+    }
+
+    @Override
+    public boolean isHandActive() {
+        Entity view = mc.getRenderViewEntity();
+        if (view != this && view instanceof EntityPlayer) {
+            return ((EntityPlayer) view).isHandActive();
+        }
+        return super.isHandActive();
+    }
+
+    @Override
+    public RayTraceResult rayTrace(double p_174822_1_, float p_174822_3_) {
+        RayTraceResult pos = super.rayTrace(p_174822_1_, 1f);
 
         // Make sure we can never look at blocks (-> no outline)
-        if(pos != null && pos.typeOfHit == MovingObjectPosition.MovingObjectType.BLOCK) {
-            pos.typeOfHit = MovingObjectPosition.MovingObjectType.MISS;
+        if(pos != null && pos.typeOfHit == RayTraceResult.Type.BLOCK) {
+            pos.typeOfHit = RayTraceResult.Type.MISS;
         }
 
         return pos;
@@ -300,7 +346,6 @@ public class CameraEntity extends EntityPlayerSP {
     @Override
     public void setDead() {
         super.setDead();
-        FMLCommonHandler.instance().bus().unregister(eventHandler);
         MinecraftForge.EVENT_BUS.unregister(eventHandler);
     }
 
@@ -358,9 +403,13 @@ public class CameraEntity extends EntityPlayerSP {
         @SubscribeEvent
         public void preCrosshairRender(RenderGameOverlayEvent.Pre event) {
             // The crosshair should only render if targeted entity can actually be spectated
-            if (event.type == RenderGameOverlayEvent.ElementType.CROSSHAIRS) {
+            if (event.getType() == RenderGameOverlayEvent.ElementType.CROSSHAIRS) {
                 event.setCanceled(!canSpectate(mc.pointedEntity));
             }
+            // Hotbar should never be rendered
+            if (event.getType() == RenderGameOverlayEvent.ElementType.HOTBAR) {
+                event.setCanceled(true);
+            }
         }
 
         @SubscribeEvent
@@ -391,13 +440,16 @@ public class CameraEntity extends EntityPlayerSP {
                 if (lastHandRendered != player) {
                     lastHandRendered = player;
 
-                    mc.entityRenderer.itemRenderer.prevEquippedProgress = 1;
-                    mc.entityRenderer.itemRenderer.equippedProgress = 1;
-                    mc.entityRenderer.itemRenderer.itemToRender = player.inventory.getCurrentItem();
-                    mc.entityRenderer.itemRenderer.equippedItemSlot = player.inventory.currentItem;
+                    mc.entityRenderer.itemRenderer.prevEquippedProgressMainHand = 1;
+                    mc.entityRenderer.itemRenderer.prevEquippedProgressOffHand = 1;
+                    mc.entityRenderer.itemRenderer.equippedProgressMainHand = 1;
+                    mc.entityRenderer.itemRenderer.equippedProgressOffHand = 1;
+                    mc.entityRenderer.itemRenderer.itemStackMainHand = player.getItemStackFromSlot(EntityEquipmentSlot.MAINHAND);
+                    mc.entityRenderer.itemRenderer.itemStackOffHand = player.getItemStackFromSlot(EntityEquipmentSlot.OFFHAND);
 
-                    mc.thePlayer.renderArmYaw = mc.thePlayer.prevRenderArmYaw = player.rotationYaw;
-                    mc.thePlayer.renderArmPitch = mc.thePlayer.prevRenderArmPitch = player.rotationPitch;
+
+                    mc.player.renderArmYaw = mc.player.prevRenderArmYaw = player.rotationYaw;
+                    mc.player.renderArmPitch = mc.player.prevRenderArmPitch = player.rotationPitch;
                 }
             }
         }
@@ -405,7 +457,7 @@ public class CameraEntity extends EntityPlayerSP {
         @SubscribeEvent
         public void onEntityViewRenderEvent(EntityViewRenderEvent.CameraSetup event) {
             if (mc.getRenderViewEntity() == CameraEntity.this) {
-                event.roll = roll;
+                event.setRoll(roll);
             }
         }
     }

src/main/java/com/replaymod/replay/camera/ClassicCameraController.java

@@ -2,8 +2,8 @@ package com.replaymod.replay.camera;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.settings.KeyBinding;
-import net.minecraft.util.MathHelper;
-import net.minecraft.util.Vec3;
+import net.minecraft.util.math.MathHelper;
+import net.minecraft.util.math.Vec3d;
 import org.lwjgl.Sys;
 
 // TODO: Marius is responsible for this. Please, someone clean it up.
@@ -18,8 +18,8 @@ public class ClassicCameraController implements CameraController {
     private double THRESHOLD = MAX_SPEED / 20;
     private double DECAY = MAX_SPEED/3;
 
-    private Vec3 direction;
-    private Vec3 dirBefore;
+    private Vec3d direction;
+    private Vec3d dirBefore;
     private double motion;
     private long lastCall = Sys.getTime();
 
@@ -129,7 +129,7 @@ public class ClassicCameraController implements CameraController {
             return;
         }
 
-        Vec3 movement = direction.normalize();
+        Vec3d movement = direction.normalize();
         double factor = motion * (frac / 1000D);
 
         camera.moveCamera(movement.xCoord * factor, movement.yCoord * factor, movement.zCoord * factor);
@@ -158,7 +158,7 @@ public class ClassicCameraController implements CameraController {
                 break;
         }
 
-        Vec3 dbf = direction;
+        Vec3d dbf = direction;
 
         if(dirBefore != null) {
             direction = dirBefore.normalize().add(direction);
@@ -169,12 +169,12 @@ public class ClassicCameraController implements CameraController {
         updateMovement();
     }
 
-    private Vec3 getVectorForRotation(float pitch, float yaw) {
+    private Vec3d getVectorForRotation(float pitch, float yaw) {
         float f2 = MathHelper.cos(-yaw * 0.017453292F - (float) Math.PI);
         float f3 = MathHelper.sin(-yaw * 0.017453292F - (float)Math.PI);
         float f4 = -MathHelper.cos(-pitch * 0.017453292F);
         float f5 = MathHelper.sin(-pitch * 0.017453292F);
-        return new Vec3((double)(f3 * f4), (double)f5, (double)(f2 * f4));
+        return new Vec3d((double)(f3 * f4), (double)f5, (double)(f2 * f4));
     }
 
     public enum MoveDirection {

src/main/java/com/replaymod/replay/camera/SpectatorCameraController.java

@@ -41,8 +41,9 @@ public class SpectatorCameraController implements CameraController {
             if (view instanceof EntityPlayer) {
                 EntityPlayer viewPlayer = (EntityPlayer) view;
                 camera.inventory = viewPlayer.inventory;
-                camera.itemInUse = viewPlayer.itemInUse;
-                camera.itemInUseCount = viewPlayer.itemInUseCount;
+                camera.itemStackMainHand = viewPlayer.itemStackMainHand;
+                camera.swingingHand = viewPlayer.swingingHand;
+                camera.activeItemStackUseCount = viewPlayer.activeItemStackUseCount;
             }
         }
     }

src/main/java/com/replaymod/replay/gui/overlay/GuiEditMarkerPopup.java

@@ -16,6 +16,10 @@ import org.lwjgl.input.Keyboard;
 import org.lwjgl.util.ReadablePoint;
 
 public class GuiEditMarkerPopup extends AbstractGuiPopup<GuiEditMarkerPopup> implements Typeable {
+    private static GuiNumberField newGuiNumberField() {
+        return new GuiNumberField().setSize(150, 20).setValidateOnFocusChange(true);
+    }
+
     private final ReplayHandler replayHandler;
     private final Marker marker;
 
@@ -23,15 +27,15 @@ public class GuiEditMarkerPopup extends AbstractGuiPopup<GuiEditMarkerPopup> imp
 
     public final GuiTextField nameField = new GuiTextField().setSize(150, 20);
     // TODO: Replace with a min/sec/msec field
-    public final GuiNumberField timeField = new GuiNumberField().setSize(150, 20).setPrecision(0);
+    public final GuiNumberField timeField = newGuiNumberField().setPrecision(0);
 
-    public final GuiNumberField xField = new GuiNumberField().setSize(150, 20).setPrecision(10);
-    public final GuiNumberField yField = new GuiNumberField().setSize(150, 20).setPrecision(10);
-    public final GuiNumberField zField = new GuiNumberField().setSize(150, 20).setPrecision(10);
+    public final GuiNumberField xField = newGuiNumberField().setPrecision(10);
+    public final GuiNumberField yField = newGuiNumberField().setPrecision(10);
+    public final GuiNumberField zField = newGuiNumberField().setPrecision(10);
 
-    public final GuiNumberField yawField = new GuiNumberField().setSize(150, 20).setPrecision(5);
-    public final GuiNumberField pitchField = new GuiNumberField().setSize(150, 20).setPrecision(5);
-    public final GuiNumberField rollField = new GuiNumberField().setSize(150, 20).setPrecision(5);
+    public final GuiNumberField yawField = newGuiNumberField().setPrecision(5);
+    public final GuiNumberField pitchField = newGuiNumberField().setPrecision(5);
+    public final GuiNumberField rollField = newGuiNumberField().setPrecision(5);
 
     public final GuiPanel inputs = GuiPanel.builder()
             .layout(new GridLayout().setColumns(2).setSpacingX(7).setSpacingY(3))

src/main/java/com/replaymod/replay/gui/overlay/GuiMarkerTimeline.java

@@ -2,14 +2,14 @@ package com.replaymod.replay.gui.overlay;
 
 import com.replaymod.core.ReplayMod;
 import com.replaymod.replay.ReplayHandler;
+import com.replaymod.replaystudio.data.Marker;
 import com.replaymod.replaystudio.util.Location;
 import de.johni0702.minecraft.gui.GuiRenderer;
 import de.johni0702.minecraft.gui.RenderInfo;
 import de.johni0702.minecraft.gui.element.advanced.AbstractGuiTimeline;
 import de.johni0702.minecraft.gui.function.Draggable;
-import com.replaymod.replaystudio.data.Marker;
 import net.minecraft.client.resources.I18n;
-import net.minecraft.util.MathHelper;
+import net.minecraft.util.math.MathHelper;
 import org.lwjgl.util.Point;
 import org.lwjgl.util.ReadableDimension;
 import org.lwjgl.util.ReadablePoint;
@@ -58,7 +58,7 @@ public class GuiMarkerTimeline extends AbstractGuiTimeline<GuiMarkerTimeline> im
 
     protected void drawMarker(GuiRenderer renderer, ReadableDimension size, Marker marker) {
         int visibleLength = (int) (getLength() * getZoom());
-        int markerPos = MathHelper.clamp_int(marker.getTime(), getOffset(), getOffset() + visibleLength);
+        int markerPos = MathHelper.clamp(marker.getTime(), getOffset(), getOffset() + visibleLength);
         double positionInVisible = markerPos - getOffset();
         double fractionOfVisible = positionInVisible / visibleLength;
         int markerX = (int) (BORDER_LEFT + fractionOfVisible * (size.getWidth() - BORDER_LEFT - BORDER_RIGHT));
@@ -99,7 +99,7 @@ public class GuiMarkerTimeline extends AbstractGuiTimeline<GuiMarkerTimeline> im
         int visibleLength = (int) (getLength() * getZoom());
         int contentWidth = lastSize.getWidth() - BORDER_LEFT - BORDER_RIGHT;
         for (Marker marker : replayHandler.getMarkers()) {
-            int markerPos = MathHelper.clamp_int(marker.getTime(), getOffset(), getOffset() + visibleLength);
+            int markerPos = MathHelper.clamp(marker.getTime(), getOffset(), getOffset() + visibleLength);
             double positionInVisible = markerPos - getOffset();
             double fractionOfVisible = positionInVisible / visibleLength;
             int markerX = (int) (BORDER_LEFT + fractionOfVisible * contentWidth);

src/main/java/com/replaymod/replay/gui/overlay/GuiReplayOverlay.java

@@ -16,7 +16,7 @@ import de.johni0702.minecraft.gui.layout.CustomLayout;
 import de.johni0702.minecraft.gui.layout.HorizontalLayout;
 import net.minecraft.client.resources.I18n;
 import net.minecraft.client.settings.GameSettings;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.InputEvent;
 import org.lwjgl.input.Keyboard;
@@ -138,9 +138,9 @@ public class GuiReplayOverlay extends AbstractGuiOverlay<GuiReplayOverlay> {
     public void setVisible(boolean visible) {
         if (isVisible() != visible) {
             if (visible) {
-                FMLCommonHandler.instance().bus().register(this);
+                MinecraftForge.EVENT_BUS.register(this);
             } else {
-                FMLCommonHandler.instance().bus().unregister(this);
+                MinecraftForge.EVENT_BUS.unregister(this);
             }
         }
         super.setVisible(visible);

src/main/java/com/replaymod/replay/handler/GuiHandler.java

@@ -9,12 +9,10 @@ import net.minecraft.client.gui.GuiMainMenu;
 import net.minecraft.client.resources.I18n;
 import net.minecraftforge.client.event.GuiScreenEvent;
 import net.minecraftforge.common.MinecraftForge;
-import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 
 import java.io.IOException;
 import java.util.ArrayList;
-import java.util.List;
 
 public class GuiHandler {
     private static final int BUTTON_EXIT_SERVER = 1;
@@ -35,13 +33,12 @@ public class GuiHandler {
     }
 
     public void register() {
-        FMLCommonHandler.instance().bus().register(this);
         MinecraftForge.EVENT_BUS.register(this);
     }
 
     @SubscribeEvent
     public void injectIntoIngameMenu(GuiScreenEvent.InitGuiEvent.Post event) {
-        if (!(event.gui instanceof GuiIngameMenu)) {
+        if (!(event.getGui() instanceof GuiIngameMenu)) {
             return;
         }
 
@@ -49,9 +46,7 @@ public class GuiHandler {
             // Pause replay when menu is opened
             mod.getReplayHandler().getReplaySender().setReplaySpeed(0);
 
-            @SuppressWarnings("unchecked")
-            List<GuiButton> buttonList = event.buttonList;
-            for(GuiButton b : new ArrayList<>(buttonList)) {
+            for(GuiButton b : new ArrayList<>(event.getButtonList())) {
                 switch (b.id) {
                     // Replace "Exit Server" button with "Exit Replay" button
                     case BUTTON_EXIT_SERVER:
@@ -62,7 +57,7 @@ public class GuiHandler {
                     case BUTTON_ACHIEVEMENTS:
                     case BUTTON_STATS:
                     case BUTTON_OPEN_TO_LAN:
-                        buttonList.remove(b);
+                        event.getButtonList().remove(b);
                 }
                 // Move all buttons except the "Return to game" button upwards
                 if (b.id != BUTTON_RETURN_TO_GAME) {
@@ -74,31 +69,29 @@ public class GuiHandler {
 
     @SubscribeEvent
     public void injectIntoMainMenu(GuiScreenEvent.InitGuiEvent event) {
-        if (!(event.gui instanceof GuiMainMenu)) {
+        if (!(event.getGui() instanceof GuiMainMenu)) {
             return;
         }
 
-        @SuppressWarnings("unchecked")
-        List<GuiButton> buttonList = event.buttonList;
-        GuiButton button = new GuiButton(BUTTON_REPLAY_VIEWER, event.gui.width / 2 - 100,
-                event.gui.height / 4 + 10 + 3 * 24, I18n.format("replaymod.gui.replayviewer"));
+        GuiButton button = new GuiButton(BUTTON_REPLAY_VIEWER, event.getGui().width / 2 - 100,
+                event.getGui().height / 4 + 10 + 3 * 24, I18n.format("replaymod.gui.replayviewer"));
         button.width = button.width / 2 - 2;
-        buttonList.add(button);
+        event.getButtonList().add(button);
     }
 
     @SubscribeEvent
     public void onButton(GuiScreenEvent.ActionPerformedEvent.Pre event) {
-        if(!event.button.enabled) return;
+        if(!event.getButton().enabled) return;
 
-        if (event.gui instanceof GuiMainMenu) {
-            if (event.button.id == BUTTON_REPLAY_VIEWER) {
+        if (event.getGui() instanceof GuiMainMenu) {
+            if (event.getButton().id == BUTTON_REPLAY_VIEWER) {
                 new GuiReplayViewer(mod).display();
             }
         }
 
-        if (event.gui instanceof GuiIngameMenu && mod.getReplayHandler() != null) {
-            if (event.button.id == BUTTON_EXIT_REPLAY) {
-                event.button.enabled = false;
+        if (event.getGui() instanceof GuiIngameMenu && mod.getReplayHandler() != null) {
+            if (event.getButton().id == BUTTON_EXIT_REPLAY) {
+                event.getButton().enabled = false;
                 mc.displayGuiScreen(new GuiMainMenu());
                 try {
                     mod.getReplayHandler().endReplay();

src/main/java/com/replaymod/replay/mixin/MixinGuiSpectator.java

@@ -12,12 +12,12 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 @Mixin(GuiSpectator.class)
 public abstract class MixinGuiSpectator {
     @Shadow
-    private Minecraft field_175268_g;
+    private Minecraft mc;
 
-    @Inject(method = "func_175260_a", at = @At("HEAD"), cancellable = true)
+    @Inject(method = "onHotbarSelected", at = @At("HEAD"), cancellable = true)
     public void isInReplay(int i, CallbackInfo ci) {
         // Prevent spectator gui from opening while in a replay
-        if (field_175268_g.thePlayer instanceof CameraEntity) {
+        if (mc.player instanceof CameraEntity) {
             ci.cancel();
         }
     }

src/main/java/com/replaymod/replay/mixin/MixinParticleManager.java

@@ -0,0 +1,31 @@
+package com.replaymod.replay.mixin;
+
+import net.minecraft.client.particle.Particle;
+import net.minecraft.client.particle.ParticleManager;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import java.util.Queue;
+
+@Mixin(ParticleManager.class)
+public abstract class MixinParticleManager {
+    @Shadow
+    private Queue<Particle> queueEntityFX;
+
+    /**
+     * This method additionally clears the queue of particles to be added when the world is changed.
+     * Otherwise particles from the previous world might show up in this one if they were spawned after
+     * the last tick in the previous world.
+     *
+     * @param world The new world
+     * @param ci Callback info
+     */
+    @Inject(method = "clearEffects", at = @At("HEAD"))
+    public void replayModReplay_clearParticleQueue(World world, CallbackInfo ci) {
+        queueEntityFX.clear();
+    }
+}

src/main/java/com/replaymod/replay/mixin/MixinPlayerControllerMP.java

@@ -1,12 +1,12 @@
 package com.replaymod.replay.mixin;
 
-import com.replaymod.replay.camera.CameraEntity;
 import com.replaymod.replay.ReplayModReplay;
+import com.replaymod.replay.camera.CameraEntity;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.entity.EntityPlayerSP;
 import net.minecraft.client.multiplayer.PlayerControllerMP;
 import net.minecraft.client.network.NetHandlerPlayClient;
-import net.minecraft.stats.StatFileWriter;
+import net.minecraft.stats.StatisticsManager;
 import net.minecraft.world.World;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
@@ -21,20 +21,20 @@ public abstract class MixinPlayerControllerMP {
     private Minecraft mc;
 
     @Shadow
-    private NetHandlerPlayClient netClientHandler;
+    private NetHandlerPlayClient connection;
 
-    @Inject(method = "func_178892_a", at=@At("HEAD"), cancellable = true)
-    private void replayModReplay_createReplayCamera(World worldIn, StatFileWriter statFileWriter, CallbackInfoReturnable<EntityPlayerSP> ci) {
+    @Inject(method = "createClientPlayer", at=@At("HEAD"), cancellable = true)
+    private void replayModReplay_createReplayCamera(World worldIn, StatisticsManager statisticsManager, CallbackInfoReturnable<EntityPlayerSP> ci) {
         if (ReplayModReplay.instance.getReplayHandler() != null) {
-            ci.setReturnValue(new CameraEntity(mc, worldIn, netClientHandler, statFileWriter));
+            ci.setReturnValue(new CameraEntity(mc, worldIn, connection, statisticsManager));
             ci.cancel();
         }
     }
 
     @Inject(method = "isSpectator", at=@At("HEAD"), cancellable = true)
     private void replayModReplay_isSpectator(CallbackInfoReturnable<Boolean> ci) {
-        if (mc.thePlayer instanceof CameraEntity) { // this check should in theory not be required
-            ci.setReturnValue(mc.thePlayer.isSpectator());
+        if (mc.player instanceof CameraEntity) { // this check should in theory not be required
+            ci.setReturnValue(mc.player.isSpectator());
         }
     }
 }

src/main/java/com/replaymod/replay/mixin/MixinRenderArmorStand.java

@@ -2,7 +2,7 @@ package com.replaymod.replay.mixin;
 
 import com.replaymod.replay.camera.CameraEntity;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.entity.ArmorStandRenderer;
+import net.minecraft.client.renderer.entity.RenderArmorStand;
 import net.minecraft.entity.item.EntityArmorStand;
 import net.minecraft.entity.player.EntityPlayer;
 import org.spongepowered.asm.mixin.Mixin;
@@ -10,11 +10,11 @@ import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
-@Mixin(ArmorStandRenderer.class)
-public abstract class MixinArmorStandRenderer {
+@Mixin(RenderArmorStand.class)
+public abstract class MixinRenderArmorStand {
     @Inject(method = "canRenderName", at = @At("HEAD"), cancellable = true)
     private void replayModReplay_canRenderInvisibleName(EntityArmorStand entity, CallbackInfoReturnable<Boolean> ci) {
-        EntityPlayer thePlayer = Minecraft.getMinecraft().thePlayer;
+        EntityPlayer thePlayer = Minecraft.getMinecraft().player;
         if (thePlayer instanceof CameraEntity && entity.isInvisible()) {
             ci.setReturnValue(false);
         }

src/main/java/com/replaymod/replay/mixin/MixinRenderArrow.java

@@ -14,6 +14,7 @@ public abstract class MixinRenderArrow extends Render {
         super(renderManager);
     }
 
+    @SuppressWarnings("unchecked")
     @Override
     public boolean shouldRender(Entity entity, ICamera camera, double camX, double camY, double camZ) {
         // Force arrows to always render, otherwise they stop rendering when you get close to them

src/main/java/com/replaymod/replay/mixin/MixinRenderItem.java

@@ -3,7 +3,7 @@ package com.replaymod.replay.mixin;
 import com.replaymod.replay.ReplayHandler;
 import com.replaymod.replay.ReplayModReplay;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.entity.RenderItem;
+import net.minecraft.client.renderer.RenderItem;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Redirect;

src/main/java/com/replaymod/replay/mixin/MixinRenderLivingBase.java

@@ -2,7 +2,7 @@ package com.replaymod.replay.mixin;
 
 import com.replaymod.replay.camera.CameraEntity;
 import net.minecraft.client.Minecraft;
-import net.minecraft.client.renderer.entity.RendererLivingEntity;
+import net.minecraft.client.renderer.entity.RenderLivingBase;
 import net.minecraft.entity.EntityLivingBase;
 import net.minecraft.entity.player.EntityPlayer;
 import org.spongepowered.asm.mixin.Mixin;
@@ -11,11 +11,11 @@ import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.Redirect;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
-@Mixin(RendererLivingEntity.class)
-public abstract class MixinRendererLivingEntity {
+@Mixin(RenderLivingBase.class)
+public abstract class MixinRenderLivingBase {
     @Inject(method = "canRenderName", at = @At("HEAD"), cancellable = true)
     private void replayModReplay_canRenderInvisibleName(EntityLivingBase entity, CallbackInfoReturnable<Boolean> ci) {
-        EntityPlayer thePlayer = Minecraft.getMinecraft().thePlayer;
+        EntityPlayer thePlayer = Minecraft.getMinecraft().player;
         if (thePlayer instanceof CameraEntity && entity.isInvisible()) {
             ci.setReturnValue(false);
         }

src/main/java/com/replaymod/replay/mixin/MixinViewFrustum.java

@@ -5,8 +5,8 @@ import net.minecraft.client.renderer.RenderGlobal;
 import net.minecraft.client.renderer.ViewFrustum;
 import net.minecraft.client.renderer.chunk.IRenderChunkFactory;
 import net.minecraft.client.renderer.chunk.RenderChunk;
-import net.minecraft.util.BlockPos;
-import net.minecraft.util.MathHelper;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.MathHelper;
 import net.minecraft.world.World;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
@@ -31,7 +31,7 @@ public abstract class MixinViewFrustum {
     }
 
     /**
-     * Instead of calling {@link RenderChunk#setPosition(BlockPos)} we recreate the render chunk
+     * Instead of calling {@link RenderChunk#setPosition(int, int, int)} we recreate the render chunk
      * which seems to solve the problem that chunks are invisible when you leave an area and return
      * to it.
      * Any better fixes are welcome.
@@ -43,22 +43,23 @@ public abstract class MixinViewFrustum {
             return;
         }
 
-        int i = MathHelper.floor_double(viewEntityX) - 8;
-        int j = MathHelper.floor_double(viewEntityZ) - 8;
+        int i = MathHelper.floor(viewEntityX) - 8;
+        int j = MathHelper.floor(viewEntityZ) - 8;
         int k = this.countChunksX * 16;
 
         for (int l = 0; l < this.countChunksX; ++l) {
-            int i1 = this.func_178157_a(i, k, l);
+            int i1 = this.getBaseCoordinate(i, k, l);
             for (int j1 = 0; j1 < this.countChunksZ; ++j1) {
-                int k1 = this.func_178157_a(j, k, j1);
+                int k1 = this.getBaseCoordinate(j, k, j1);
                 for (int l1 = 0; l1 < this.countChunksY; ++l1) {
                     int i2 = l1 * 16;
                     RenderChunk renderchunk = this.renderChunks[(j1 * this.countChunksY + l1) * this.countChunksX + l];
                     BlockPos blockpos = new BlockPos(i1, i2, k1);
                     if (!blockpos.equals(renderchunk.getPosition())) {
                         // Recreate render chunk instead of setting its position
-                        renderChunks[(j1 * this.countChunksY + l1) * this.countChunksX + l] =
-                                renderChunkFactory.makeRenderChunk(world, renderGlobal, blockpos, 0);
+                        (renderChunks[(j1 * this.countChunksY + l1) * this.countChunksX + l] =
+                                renderChunkFactory.create(world, renderGlobal, 0)
+                        ).setPosition(blockpos.getX(), blockpos.getY(), blockpos.getZ());
                     }
                 }
             }
@@ -66,5 +67,5 @@ public abstract class MixinViewFrustum {
         ci.cancel();
     }
 
-    @Shadow abstract int func_178157_a(int p_178157_1_, int p_178157_2_, int p_178157_3_);
+    @Shadow abstract int getBaseCoordinate(int p_178157_1_, int p_178157_2_, int p_178157_3_);
 }

src/main/java/com/replaymod/simplepathing/InterpolatorType.java

@@ -0,0 +1,54 @@
+package com.replaymod.simplepathing;
+
+import com.replaymod.replaystudio.pathing.interpolation.CatmullRomSplineInterpolator;
+import com.replaymod.replaystudio.pathing.interpolation.CubicSplineInterpolator;
+import com.replaymod.replaystudio.pathing.interpolation.Interpolator;
+import com.replaymod.replaystudio.pathing.interpolation.LinearInterpolator;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import java.util.function.Supplier;
+
+@AllArgsConstructor
+public enum InterpolatorType {
+    DEFAULT("default", null, null),
+    CATMULL_ROM("catmullrom", CatmullRomSplineInterpolator.class, () -> new CatmullRomSplineInterpolator(0.5)),
+    CUBIC("cubic", CubicSplineInterpolator.class, CubicSplineInterpolator::new),
+    LINEAR("linear", LinearInterpolator.class, LinearInterpolator::new);
+
+    @Getter
+    private String localizationKey;
+
+    @Getter
+    private Class<? extends Interpolator> interpolatorClass;
+
+    private Supplier<Interpolator> interpolatorConstructor;
+
+    public String getI18nName() {
+        return String.format("replaymod.gui.editkeyframe.interpolator.%1$s.name", localizationKey);
+    }
+
+    public String getI18nDescription() {
+        return String.format("replaymod.gui.editkeyframe.interpolator.%1$s.desc", localizationKey);
+    }
+
+    public static InterpolatorType fromString(String string) {
+        for (InterpolatorType t : values()) {
+            if (t.getI18nName().equals(string)) return t;
+        }
+        return CATMULL_ROM; //the default
+    }
+
+    public static InterpolatorType fromClass(Class<? extends Interpolator> cls) {
+        for (InterpolatorType type : values()) {
+            if (cls.equals(type.getInterpolatorClass())) {
+                return type;
+            }
+        }
+        return DEFAULT;
+    }
+
+    public Interpolator newInstance() {
+        return interpolatorConstructor.get();
+    }
+}

src/main/java/com/replaymod/simplepathing/ReplayModSimplePathing.java

@@ -1,36 +1,25 @@
 package com.replaymod.simplepathing;
 
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonWriter;
 import com.replaymod.core.ReplayMod;
 import com.replaymod.core.events.SettingsChangedEvent;
-import com.replaymod.pathing.properties.CameraProperties;
-import com.replaymod.pathing.properties.SpectatorProperty;
-import com.replaymod.pathing.properties.TimestampProperty;
 import com.replaymod.replay.events.ReplayCloseEvent;
 import com.replaymod.replay.events.ReplayOpenEvent;
-import com.replaymod.replaystudio.pathing.PathingRegistry;
-import com.replaymod.replaystudio.pathing.impl.TimelineImpl;
-import com.replaymod.replaystudio.pathing.interpolation.CubicSplineInterpolator;
-import com.replaymod.replaystudio.pathing.interpolation.Interpolator;
-import com.replaymod.replaystudio.pathing.interpolation.LinearInterpolator;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
-import com.replaymod.replaystudio.pathing.path.Timeline;
+import com.replaymod.simplepathing.SPTimeline.SPPath;
 import com.replaymod.simplepathing.gui.GuiPathing;
 import com.replaymod.simplepathing.preview.PathPreview;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import lombok.Getter;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.Mod;
 import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import org.apache.logging.log4j.Logger;
 
-import java.io.IOException;
-
 @Mod(modid = ReplayModSimplePathing.MOD_ID,
         version = "@MOD_VERSION@",
         acceptedMinecraftVersions = "@MC_VERSION@",
         useMetadata = true)
-public class ReplayModSimplePathing implements PathingRegistry {
+public class ReplayModSimplePathing {
     public static final String MOD_ID = "replaymod-simplepathing";
 
     private ReplayMod core;
@@ -46,7 +35,7 @@ public class ReplayModSimplePathing implements PathingRegistry {
 
         core.getSettingsRegistry().register(Setting.class);
 
-        FMLCommonHandler.instance().bus().register(this);
+        MinecraftForge.EVENT_BUS.register(this);
 
         PathPreview pathPreview = new PathPreview(this);
         pathPreview.register();
@@ -54,84 +43,60 @@ public class ReplayModSimplePathing implements PathingRegistry {
 
     @SubscribeEvent
     public void postReplayOpen(ReplayOpenEvent.Post event) {
+        currentTimeline = new SPTimeline();
         guiPathing = new GuiPathing(core, this, event.getReplayHandler());
     }
 
     @SubscribeEvent
     public void onReplayClose(ReplayCloseEvent.Post event) {
+        currentTimeline = null;
         guiPathing = null;
-        currentTimeline = createTimeline();
-        currentTimeline.createPath();
-        currentTimeline.createPath();
-        selectedKeyframe = null;
+        selectedPath = null;
     }
 
     @SubscribeEvent
     public void onSettingsChanged(SettingsChangedEvent event) {
-        if (event.getKey() == Setting.LINEAR_INTERPOLATION) {
+        if (event.getKey() == Setting.DEFAULT_INTERPOLATION) {
             if (currentTimeline != null && guiPathing != null) {
-                currentTimeline.applyChange(guiPathing.updateInterpolators());
+                updateDefaultInterpolatorType();
             }
         }
     }
 
-    private Timeline currentTimeline = createTimeline(); { currentTimeline.createPath(); currentTimeline.createPath(); }
-    private Keyframe selectedKeyframe;
+    private SPTimeline currentTimeline;
 
-    public Keyframe getSelectedKeyframe() {
-        return selectedKeyframe;
+    @Getter
+    private SPPath selectedPath;
+    @Getter
+    private long selectedTime;
+
+    public boolean isSelected(Keyframe keyframe) {
+        return selectedPath != null && currentTimeline.getKeyframe(selectedPath, selectedTime) == keyframe;
     }
 
-    public void setSelectedKeyframe(Keyframe selected) {
-        this.selectedKeyframe = selected;
+    public void setSelected(SPPath path, long time) {
+        selectedPath = path;
+        selectedTime = time;
     }
 
-    public void setCurrentTimeline(Timeline currentTimeline) {
-        if (this.currentTimeline != currentTimeline) {
-            selectedKeyframe = null;
-        }
-        this.currentTimeline = currentTimeline;
+    public void setCurrentTimeline(SPTimeline newTimeline) {
+        selectedPath = null;
+        currentTimeline = newTimeline;
     }
 
-    public Timeline getCurrentTimeline() {
+    public void clearCurrentTimeline() {
+        setCurrentTimeline(new SPTimeline());
+        updateDefaultInterpolatorType();
+    }
+
+    public SPTimeline getCurrentTimeline() {
         return currentTimeline;
     }
 
-    @Override
-    public Timeline createTimeline() {
-        Timeline timeline = new TimelineImpl();
-
-        timeline.registerProperty(TimestampProperty.PROPERTY);
-        timeline.registerProperty(CameraProperties.POSITION);
-        timeline.registerProperty(CameraProperties.ROTATION);
-        timeline.registerProperty(SpectatorProperty.PROPERTY);
-
-        return timeline;
-    }
-
-    @Override
-    public void serializeInterpolator(JsonWriter writer, Interpolator interpolator) throws IOException {
-        if (interpolator instanceof LinearInterpolator) {
-            writer.value("linear");
-        } else if (interpolator instanceof CubicSplineInterpolator) {
-            writer.value("cubic-spline");
-        } else {
-            throw new IOException("Unknown interpolator type: " + interpolator);
-        }
-    }
-
-    @Override
-    public Interpolator deserializeInterpolator(JsonReader reader) throws IOException {
-        String type = reader.nextString();
-        switch (type) {
-            case "linear":
-                return new LinearInterpolator();
-            case "cubic-spline":
-                return new CubicSplineInterpolator();
-            default:
-                throw new IOException("Unknown interpolation type: " + type);
-
-        }
+    private void updateDefaultInterpolatorType() {
+        InterpolatorType newDefaultType =
+                InterpolatorType.fromString(core.getSettingsRegistry().get(Setting.DEFAULT_INTERPOLATION));
+        currentTimeline.setDefaultInterpolatorType(newDefaultType);
     }
 
     public ReplayMod getCore() {

src/main/java/com/replaymod/simplepathing/SPTimeline.java

@@ -0,0 +1,669 @@
+package com.replaymod.simplepathing;
+
+import com.google.common.base.Preconditions;
+import com.google.common.collect.Iterables;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import com.replaymod.pathing.properties.CameraProperties;
+import com.replaymod.pathing.properties.SpectatorProperty;
+import com.replaymod.pathing.properties.TimestampProperty;
+import com.replaymod.replaystudio.pathing.PathingRegistry;
+import com.replaymod.replaystudio.pathing.change.AddKeyframe;
+import com.replaymod.replaystudio.pathing.change.Change;
+import com.replaymod.replaystudio.pathing.change.CombinedChange;
+import com.replaymod.replaystudio.pathing.change.SetInterpolator;
+import com.replaymod.replaystudio.pathing.change.UpdateKeyframeProperties;
+import com.replaymod.replaystudio.pathing.impl.TimelineImpl;
+import com.replaymod.replaystudio.pathing.interpolation.CatmullRomSplineInterpolator;
+import com.replaymod.replaystudio.pathing.interpolation.CubicSplineInterpolator;
+import com.replaymod.replaystudio.pathing.interpolation.Interpolator;
+import com.replaymod.replaystudio.pathing.interpolation.LinearInterpolator;
+import com.replaymod.replaystudio.pathing.path.Keyframe;
+import com.replaymod.replaystudio.pathing.path.Path;
+import com.replaymod.replaystudio.pathing.path.PathSegment;
+import com.replaymod.replaystudio.pathing.path.Timeline;
+import com.replaymod.replaystudio.pathing.property.Property;
+import com.replaymod.replaystudio.util.EntityPositionTracker;
+import com.replaymod.replaystudio.util.Location;
+import com.replaymod.simplepathing.properties.ExplicitInterpolationProperty;
+import lombok.Getter;
+import net.minecraft.crash.CrashReport;
+import net.minecraft.crash.CrashReportCategory;
+import net.minecraft.util.ReportedException;
+import org.apache.commons.lang3.ObjectUtils;
+import org.apache.commons.lang3.Validate;
+import org.apache.commons.lang3.tuple.Triple;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringReader;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.IdentityHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.Set;
+
+import static com.replaymod.replaystudio.pathing.change.RemoveKeyframe.create;
+import static com.replaymod.simplepathing.ReplayModSimplePathing.LOGGER;
+
+/**
+ * Simplified timeline abstraction used in the SimplePathing module.
+ */
+public class SPTimeline implements PathingRegistry {
+    public enum SPPath {
+        TIME,
+        POSITION,
+    }
+
+    @Getter
+    private final Timeline timeline;
+    @Getter
+    private final Path timePath;
+    @Getter
+    private final Path positionPath;
+
+    @Getter
+    private EntityPositionTracker entityTracker;
+    private InterpolatorType defaultInterpolatorType = InterpolatorType.fromString("invalid string returns default");
+
+    public SPTimeline() {
+        this(createInitialTimeline());
+    }
+
+    public SPTimeline(Timeline timeline) {
+        this.timeline = timeline;
+        this.timePath = timeline.getPaths().get(SPPath.TIME.ordinal());
+        this.positionPath = timeline.getPaths().get(SPPath.POSITION.ordinal());
+    }
+
+    public Path getPath(SPPath path) {
+        switch (path) {
+            case TIME:
+                return getTimePath();
+            case POSITION:
+                return getPositionPath();
+        }
+        throw new IllegalArgumentException("Unknown path " + path);
+    }
+
+    public Keyframe getKeyframe(SPPath path, long keyframe) {
+        return getPath(path).getKeyframe(keyframe);
+    }
+
+    public void setEntityTracker(EntityPositionTracker entityTracker) {
+        Preconditions.checkState(this.entityTracker == null, "Entity tracker already set");
+        this.entityTracker = entityTracker;
+    }
+
+    public void setDefaultInterpolatorType(InterpolatorType defaultInterpolatorType) {
+        Validate.isTrue(defaultInterpolatorType != InterpolatorType.DEFAULT, "Must not be DEFAULT");
+        this.defaultInterpolatorType = Validate.notNull(defaultInterpolatorType);
+
+        if (entityTracker != null) {
+            timeline.pushChange(updateInterpolators());
+        }
+    }
+
+    public Change setDefaultInterpolator(Interpolator interpolator) {
+        Preconditions.checkState(defaultInterpolatorType != null, "Default interpolator type not set.");
+        Validate.isInstanceOf(defaultInterpolatorType.getInterpolatorClass(), interpolator);
+
+        registerPositionInterpolatorProperties(interpolator);
+
+        Change change = CombinedChange.create(
+                positionPath.getSegments().stream()
+                        // Ignore explicitly set segments
+                        .filter(s -> !s.getStartKeyframe().getValue(ExplicitInterpolationProperty.PROPERTY).isPresent())
+                        // Ignore spectator segments
+                        .filter(s -> !isSpectatorSegment(s))
+                        // Update interpolator for every remaining segment
+                        // This will create a fragmented interpolator which is split by the updateInterpolators call
+                        .map(s -> SetInterpolator.create(s, interpolator)).toArray(Change[]::new)
+        );
+        change.apply(timeline);
+        return CombinedChange.createFromApplied(change, updateInterpolators());
+    }
+
+    public boolean isTimeKeyframe(long time) {
+        return timePath.getKeyframe(time) != null;
+    }
+
+    public boolean isPositionKeyframe(long time) {
+        return positionPath.getKeyframe(time) != null;
+    }
+
+    public boolean isSpectatorKeyframe(long time) {
+        Keyframe keyframe = positionPath.getKeyframe(time);
+        return keyframe != null && keyframe.getValue(SpectatorProperty.PROPERTY).isPresent();
+    }
+
+    public void addPositionKeyframe(long time, double posX, double posY, double posZ,
+                                    float yaw, float pitch, float roll, int spectated) {
+        LOGGER.debug("Adding position keyframe at {} pos {}/{}/{} rot {}/{}/{} entId {}",
+                time, posX, posY, posZ, yaw, pitch, roll, spectated);
+
+        Path path = positionPath;
+
+        Preconditions.checkState(positionPath.getKeyframe(time) == null, "Keyframe already exists");
+
+        Change change = AddKeyframe.create(path, time);
+        change.apply(timeline);
+        Keyframe keyframe = path.getKeyframe(time);
+
+        UpdateKeyframeProperties.Builder builder = UpdateKeyframeProperties.create(path, keyframe);
+        builder.setValue(CameraProperties.POSITION, Triple.of(posX, posY, posZ));
+        builder.setValue(CameraProperties.ROTATION, Triple.of(yaw, pitch, roll));
+        if (spectated != -1) {
+            builder.setValue(SpectatorProperty.PROPERTY, spectated);
+        }
+        UpdateKeyframeProperties updateChange = builder.done();
+        updateChange.apply(timeline);
+        change = CombinedChange.createFromApplied(change, updateChange);
+
+        // If this new keyframe formed the first segment of the path
+        if (path.getSegments().size() == 1) {
+            // then create an initial interpolator of default type
+            PathSegment segment = path.getSegments().iterator().next();
+            Interpolator interpolator = createDefaultInterpolator();
+            SetInterpolator setInterpolator = SetInterpolator.create(segment, interpolator);
+            setInterpolator.apply(timeline);
+            change = CombinedChange.createFromApplied(change, setInterpolator);
+        }
+
+        // Update interpolators for spectator keyframes
+        // while this is overkill, it is far simpler than updating differently for every possible case
+        change = CombinedChange.createFromApplied(change, updateInterpolators());
+
+        Change specPosUpdate = updateSpectatorPositions();
+        specPosUpdate.apply(timeline);
+        change = CombinedChange.createFromApplied(change, specPosUpdate);
+
+        timeline.pushChange(change);
+    }
+
+    public Change updatePositionKeyframe(long time, double posX, double posY, double posZ,
+                                    float yaw, float pitch, float roll) {
+        LOGGER.debug("Updating position keyframe at {} to pos {}/{}/{} rot {}/{}/{}",
+                time, posX, posY, posZ, yaw, pitch, roll);
+
+        Keyframe keyframe = positionPath.getKeyframe(time);
+
+        Preconditions.checkState(keyframe != null, "Keyframe does not exists");
+        Preconditions.checkState(!keyframe.getValue(SpectatorProperty.PROPERTY).isPresent(), "Cannot update spectator keyframe");
+
+        Change change = UpdateKeyframeProperties.create(positionPath, keyframe)
+                .setValue(CameraProperties.POSITION, Triple.of(posX, posY, posZ))
+                .setValue(CameraProperties.ROTATION, Triple.of(yaw, pitch, roll))
+                .done();
+        change.apply(timeline);
+        return change;
+    }
+
+    public void removePositionKeyframe(long time) {
+        LOGGER.debug("Removing position keyframe at {}", time);
+
+        Path path = positionPath;
+        Keyframe keyframe = path.getKeyframe(time);
+
+        Preconditions.checkState(keyframe != null, "No keyframe at that time");
+
+        Change change = create(path, keyframe);
+        change.apply(timeline);
+
+        // Update interpolators for spectator keyframes
+        // while this is overkill, it is far simpler than updating differently for every possible case
+        change = CombinedChange.createFromApplied(change, updateInterpolators());
+
+        Change specPosUpdate = updateSpectatorPositions();
+        specPosUpdate.apply(timeline);
+        change = CombinedChange.createFromApplied(change, specPosUpdate);
+
+        timeline.pushChange(change);
+    }
+
+    public void addTimeKeyframe(long time, int replayTime) {
+        LOGGER.debug("Adding time keyframe at {} time {}", time, replayTime);
+
+        Path path = timePath;
+
+        Preconditions.checkState(path.getKeyframe(time) == null, "Keyframe already exists");
+
+        Change change = AddKeyframe.create(path, time);
+        change.apply(timeline);
+        Keyframe keyframe = path.getKeyframe(time);
+
+        UpdateKeyframeProperties updateChange = UpdateKeyframeProperties.create(path, keyframe)
+                .setValue(TimestampProperty.PROPERTY, replayTime)
+                .done();
+        updateChange.apply(timeline);
+        change = CombinedChange.createFromApplied(change, updateChange);
+
+        // If this new keyframe formed the first segment of the path
+        if (path.getSegments().size() == 1) {
+            // then create an initial interpolator
+            PathSegment segment = path.getSegments().iterator().next();
+            Interpolator interpolator = new LinearInterpolator();
+            interpolator.registerProperty(TimestampProperty.PROPERTY);
+            SetInterpolator setInterpolator = SetInterpolator.create(segment, interpolator);
+            setInterpolator.apply(timeline);
+            change = CombinedChange.createFromApplied(change, setInterpolator);
+        }
+
+        Change specPosUpdate = updateSpectatorPositions();
+        specPosUpdate.apply(timeline);
+        change = CombinedChange.createFromApplied(change, specPosUpdate);
+
+        timeline.pushChange(change);
+    }
+
+    public Change updateTimeKeyframe(long time, int replayTime) {
+        LOGGER.debug("Updating time keyframe at {} to time {}", time, replayTime);
+
+        Keyframe keyframe = timePath.getKeyframe(time);
+
+        Preconditions.checkState(keyframe != null, "Keyframe does not exists");
+
+        Change change = UpdateKeyframeProperties.create(timePath, keyframe)
+                .setValue(TimestampProperty.PROPERTY, replayTime)
+                .done();
+        change.apply(timeline);
+        return change;
+    }
+
+    public void removeTimeKeyframe(long time) {
+        LOGGER.debug("Removing time keyframe at {}", time);
+
+        Path path = timePath;
+        Keyframe keyframe = path.getKeyframe(time);
+
+        Preconditions.checkState(keyframe != null, "No keyframe at that time");
+
+        Change change = create(path, keyframe);
+        change.apply(timeline);
+
+        Change specPosUpdate = updateSpectatorPositions();
+        specPosUpdate.apply(timeline);
+        change = CombinedChange.createFromApplied(change, specPosUpdate);
+
+        timeline.pushChange(change);
+    }
+
+    public Change setInterpolatorToDefault(long time) {
+        LOGGER.debug("Setting interpolator of position keyframe at {} to the default", time);
+
+        Keyframe keyframe = positionPath.getKeyframe(time);
+
+        Preconditions.checkState(keyframe != null, "Keyframe does not exists");
+
+        Change change = UpdateKeyframeProperties.create(positionPath, keyframe)
+                .removeProperty(ExplicitInterpolationProperty.PROPERTY)
+                .done();
+        change.apply(timeline);
+        return CombinedChange.createFromApplied(change, updateInterpolators());
+    }
+
+    public Change setInterpolator(long time, Interpolator interpolator) {
+        LOGGER.debug("Setting interpolator of position keyframe at {} to {}", time, interpolator);
+
+        Keyframe keyframe = positionPath.getKeyframe(time);
+        Preconditions.checkState(keyframe != null, "Keyframe does not exists");
+        PathSegment segment = positionPath.getSegments().stream().filter(s -> s.getStartKeyframe() == keyframe)
+                .findFirst().orElseThrow(() -> new IllegalStateException("Keyframe has no following segment."));
+
+        registerPositionInterpolatorProperties(interpolator);
+
+        Change change = CombinedChange.create(
+                UpdateKeyframeProperties.create(positionPath, keyframe)
+                        .setValue(ExplicitInterpolationProperty.PROPERTY, ObjectUtils.NULL)
+                        .done(),
+                SetInterpolator.create(segment, interpolator)
+        );
+        change.apply(timeline);
+        return CombinedChange.createFromApplied(change, updateInterpolators());
+    }
+
+    public Change moveKeyframe(SPPath spPath, long oldTime, long newTime) {
+        LOGGER.debug("Moving keyframe on {} from {} to {}", spPath, oldTime, newTime);
+        Path path = getPath(spPath);
+        Keyframe keyframe = path.getKeyframe(oldTime);
+
+        Preconditions.checkState(keyframe != null, "No keyframe at specified time");
+
+        // Interpolator of the first segment might be required later if it is the only one
+        Optional<Interpolator> firstInterpolator =
+                path.getSegments().stream().findFirst().map(PathSegment::getInterpolator);
+
+        // The interpolator of the previous segment
+        Optional<Interpolator> interpolatorBefore =
+                path.getSegments().stream().filter(s -> s.getEndKeyframe() == keyframe).findFirst().map(PathSegment::getInterpolator);
+
+        // The interpolator of the following segment
+        Optional<Interpolator> interpolatorAfter =
+                path.getSegments().stream().filter(s -> s.getStartKeyframe() == keyframe).findFirst().map(PathSegment::getInterpolator);
+
+        // First remove the old keyframe
+        Change removeChange = create(path, keyframe);
+        removeChange.apply(timeline);
+
+        // and add a new one at the correct time
+        Change addChange = AddKeyframe.create(path, newTime);
+        addChange.apply(timeline);
+
+        // Then copy over all properties
+        UpdateKeyframeProperties.Builder builder = UpdateKeyframeProperties.create(path, path.getKeyframe(newTime));
+        for (Property property : keyframe.getProperties()) {
+            copyProperty(property, keyframe, builder);
+        }
+        Change propertyChange = builder.done();
+        propertyChange.apply(timeline);
+
+
+        Change restoreInterpolatorChange;
+        Keyframe newKf = path.getKeyframe(newTime);
+        if (Iterables.getLast(path.getKeyframes()) != newKf) { // Unless this is the last keyframe
+            // the interpolator of the following segment has been lost and needs to be restored
+            restoreInterpolatorChange = interpolatorAfter.<Change>flatMap(interpolator ->
+                    path.getSegments().stream().filter(s -> s.getStartKeyframe() == newKf).findFirst().map(segment ->
+                            SetInterpolator.create(segment, interpolator)
+                    )
+            ).orElseGet(CombinedChange::create);
+        } else { // If it is the last keyframe however,
+            // the interpolator of the previous segment has been lost and needs to be restored
+            restoreInterpolatorChange = interpolatorBefore.<Change>flatMap(interpolator ->
+                    path.getSegments().stream().filter(s -> s.getEndKeyframe() == newKf).findFirst().map(segment ->
+                            SetInterpolator.create(segment, interpolator)
+                    )
+            ).orElseGet(CombinedChange::create);
+        }
+        restoreInterpolatorChange.apply(timeline);
+
+        // Finally update the interpolators
+        Change interpolatorUpdateChange;
+        if (spPath == SPPath.POSITION) {
+            // Position / Spectator keyframes need special handling
+            interpolatorUpdateChange = updateInterpolators();
+        } else {
+            // Time keyframes only need updating when only one segment of them exists
+            if (path.getSegments().size() == 1) {
+                assert firstInterpolator.isPresent() : "One segment should have existed before as well";
+                interpolatorUpdateChange = SetInterpolator.create(path.getSegments().iterator().next(), firstInterpolator.get());
+            } else {
+                interpolatorUpdateChange = CombinedChange.create(); // Noop change
+            }
+            interpolatorUpdateChange.apply(timeline);
+        }
+
+        // and update spectator positions
+        Change spectatorChange = updateSpectatorPositions();
+        spectatorChange.apply(timeline);
+
+        return CombinedChange.createFromApplied(removeChange, addChange, propertyChange,
+                restoreInterpolatorChange, interpolatorUpdateChange, spectatorChange);
+    }
+
+    // Helper method because generics cannot be defined on blocks
+    private <T> void copyProperty(Property<T> property, Keyframe from, UpdateKeyframeProperties.Builder to) {
+        from.getValue(property).ifPresent(value -> to.setValue(property, value));
+    }
+
+    private Change updateInterpolators() {
+        Collection<PathSegment> pathSegments = positionPath.getSegments();
+        // Contains updated pathsegment-interpolator mappings, may be changed multiple times over the course of this method
+        Map<PathSegment, Interpolator> updates = new HashMap<>();
+
+        // First, setup spectator interpolators
+        Interpolator interpolator = null;
+        // Iterate through all segments
+        for (PathSegment segment : pathSegments) {
+            if (isSpectatorSegment(segment)) {
+                // If the last segment was a spectator segment, then use its interpolator for this segment as well
+                if (interpolator == null) {
+                    // otherwise create a new interpolator
+                    interpolator = new LinearInterpolator();
+                    interpolator.registerProperty(SpectatorProperty.PROPERTY);
+                }
+                // Now that we have an interpolator, set it for the current segment
+                updates.put(segment, interpolator);
+            } else {
+                // Not a spectator segment, make sure we don't re-use the last interpolator (it would not be continuous)
+                interpolator = null;
+            }
+        }
+
+        // Then, if required, replace old default interpolators with new ones
+        pathSegments.stream()
+                // Ignore explicitly set segments
+                .filter(s -> !s.getStartKeyframe().getValue(ExplicitInterpolationProperty.PROPERTY).isPresent())
+                // Ignore spectator segments
+                .filter(s -> !isSpectatorSegment(s))
+                // Ignore already correct segments, should ignore all if default hasn't changed
+                .filter(s -> !s.getInterpolator().getClass().equals(defaultInterpolatorType.getInterpolatorClass()))
+                // Finally, set the interpolators
+                // This will create one interpolator per segment, they will be merged later
+                .forEach(segment -> updates.put(segment, createDefaultInterpolator()));
+
+        // All interpolators should now be set appropriately but may still be fragmented.
+        // Cleaning that up is a two step process
+
+        // Firstly, all interpolators that are not continuous need to be split up
+        Interpolator lastInterpolator = null;
+        Set<Interpolator> used = Collections.newSetFromMap(new IdentityHashMap<>());
+        for (PathSegment segment : pathSegments) {
+            if (isSpectatorSegment(segment)) {
+                lastInterpolator = null;
+                continue; // Chain broken by spectator segment
+            }
+
+            Interpolator currentInterpolator = updates.getOrDefault(segment, segment.getInterpolator());
+            if (lastInterpolator == currentInterpolator) {
+                continue; // All fine, interpolator is still continuous
+            }
+
+            // New interpolator, make sure it hasn't been used before
+            if (!used.add(interpolator)) {
+                // It has been used before, we need to clone it and use the clone instead
+                // This will create a new interpolator for each segment which will be merged later
+                currentInterpolator = cloneInterpolator(currentInterpolator);
+                updates.put(segment, currentInterpolator);
+            }
+            lastInterpolator = currentInterpolator;
+        }
+
+        // Secondly, all neighbouring interpolators that are equal need to be merged
+        lastInterpolator = null;
+        String lastInterpolatorSerialized = null;
+        for (PathSegment segment : pathSegments) {
+            if (isSpectatorSegment(segment)) {
+                lastInterpolator = null;
+                lastInterpolatorSerialized = null;
+                continue; // Spectator segments are continuous by construction
+            }
+            Interpolator currentInterpolator = updates.getOrDefault(segment, segment.getInterpolator());
+            String serialized = serializeInterpolator(currentInterpolator);
+            if (lastInterpolator != currentInterpolator && serialized.equals(lastInterpolatorSerialized)) {
+                // This interpolator is equal to the last one but not the same, needs merging
+                updates.put(segment, lastInterpolator);
+                continue;
+            }
+            // New interpolator, not related to the previous one, merged by definition
+            lastInterpolator = currentInterpolator;
+            lastInterpolatorSerialized = serialized;
+        }
+
+        Change change = CombinedChange.create(updates.entrySet().stream()
+                .map(e -> SetInterpolator.create(e.getKey(), e.getValue())).toArray(Change[]::new));
+        change.apply(timeline);
+        return change;
+    }
+
+    private boolean isSpectatorSegment(PathSegment segment) {
+        return segment.getStartKeyframe().getValue(SpectatorProperty.PROPERTY).isPresent()
+                && segment.getEndKeyframe().getValue(SpectatorProperty.PROPERTY).isPresent();
+    }
+
+    private Change updateSpectatorPositions() {
+        List<Change> changes = new ArrayList<>();
+        timePath.updateAll();
+        for (Keyframe keyframe : positionPath.getKeyframes()) {
+            Optional<Integer> spectator = keyframe.getValue(SpectatorProperty.PROPERTY);
+            if (spectator.isPresent()) {
+                Optional<Integer> time = timePath.getValue(TimestampProperty.PROPERTY, keyframe.getTime());
+                if (!time.isPresent()) {
+                    continue; // No time keyframes set at this video time, cannot determine replay time
+                }
+                Location expected = entityTracker.getEntityPositionAtTimestamp(spectator.get(), time.get());
+                if (expected == null) {
+                    continue; // We don't have any data on this entity for some reason
+                }
+                Triple<Double, Double, Double> pos = keyframe.getValue(CameraProperties.POSITION).orElse(Triple.of(0D, 0D, 0D));
+                Triple<Float, Float, Float> rot = keyframe.getValue(CameraProperties.ROTATION).orElse(Triple.of(0F, 0F, 0F));
+                Location actual = new Location(pos.getLeft(), pos.getMiddle(), pos.getRight(), rot.getLeft(), rot.getRight());
+                if (!expected.equals(actual)) {
+                    changes.add(UpdateKeyframeProperties.create(positionPath, keyframe)
+                            .setValue(CameraProperties.POSITION, Triple.of(expected.getX(), expected.getY(), expected.getZ()))
+                            .setValue(CameraProperties.ROTATION, Triple.of(expected.getYaw(), expected.getPitch(), 0f)).done()
+                    );
+                }
+            }
+        }
+        return CombinedChange.create(changes.toArray(new Change[changes.size()]));
+    }
+
+    private Interpolator createDefaultInterpolator() {
+        return registerPositionInterpolatorProperties(defaultInterpolatorType.newInstance());
+    }
+
+    private Interpolator registerPositionInterpolatorProperties(Interpolator interpolator) {
+        interpolator.registerProperty(CameraProperties.POSITION);
+        interpolator.registerProperty(CameraProperties.ROTATION);
+        return interpolator;
+    }
+
+    @Override
+    public Timeline createTimeline() {
+        return createTimelineStatic();
+    }
+
+    private static Timeline createInitialTimeline() {
+        Timeline timeline = createTimelineStatic();
+        timeline.createPath();
+        timeline.createPath();
+        return timeline;
+    }
+
+    private static Timeline createTimelineStatic() {
+        Timeline timeline = new TimelineImpl();
+
+        timeline.registerProperty(TimestampProperty.PROPERTY);
+        timeline.registerProperty(CameraProperties.POSITION);
+        timeline.registerProperty(CameraProperties.ROTATION);
+        timeline.registerProperty(SpectatorProperty.PROPERTY);
+        timeline.registerProperty(ExplicitInterpolationProperty.PROPERTY);
+
+        return timeline;
+    }
+
+    @Override
+    public void serializeInterpolator(JsonWriter writer, Interpolator interpolator) throws IOException {
+        if (interpolator instanceof LinearInterpolator) {
+            writer.value("linear");
+        } else if (interpolator instanceof CubicSplineInterpolator) {
+            writer.value("cubic-spline");
+        } else if (interpolator instanceof CatmullRomSplineInterpolator) {
+            writer.beginObject();
+            writer.name("type").value("catmull-rom-spline");
+            writer.name("alpha").value(((CatmullRomSplineInterpolator) interpolator).getAlpha());
+            writer.endObject();
+        } else {
+            throw new IOException("Unknown interpolator type: " + interpolator);
+        }
+    }
+
+    @Override
+    public Interpolator deserializeInterpolator(JsonReader reader) throws IOException {
+        String type;
+        JsonObject args;
+        switch (reader.peek()) {
+            case STRING:
+                type = reader.nextString();
+                args = null;
+                break;
+            case BEGIN_OBJECT:
+                args = new JsonParser().parse(reader).getAsJsonObject();
+                type = args.get("type").getAsString();
+                break;
+            default:
+                throw new IOException("Unexpected token: " + reader.peek());
+        }
+        switch (type) {
+            case "linear":
+                return new LinearInterpolator();
+            case "cubic-spline":
+                return new CubicSplineInterpolator();
+            case "catmull-rom-spline":
+                if (args == null || !args.has("alpha")) {
+                    throw new IOException("Missing alpha value for catmull-rom-spline.");
+                }
+                return new CatmullRomSplineInterpolator(args.get("alpha").getAsDouble());
+            default:
+                throw new IOException("Unknown interpolation type: " + type);
+
+        }
+    }
+
+    /**
+     * Clones an interpolator by de- and re-serializing it.
+     * @param interpolator The interpolator to clone
+     * @return The cloned interpolator
+     */
+    private Interpolator cloneInterpolator(Interpolator interpolator) {
+        Interpolator cloned = deserializeInterpolator(serializeInterpolator(interpolator));
+        interpolator.getKeyframeProperties().forEach(cloned::registerProperty);
+        return cloned;
+    }
+
+    /**
+     * Serializes the specific interpolator to String.
+     * Does <b>not</b> serialize the registered keyframe properties.
+     * @param interpolator The interpolator to serialize.
+     * @return The serialized interpolator
+     */
+    private String serializeInterpolator(Interpolator interpolator) {
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+
+        JsonWriter jsonWriter = new JsonWriter(new PrintWriter(baos));
+        try {
+            jsonWriter.beginArray();
+            serializeInterpolator(jsonWriter, interpolator);
+            jsonWriter.endArray();
+            jsonWriter.flush();
+        } catch (IOException e) {
+            CrashReport crash = CrashReport.makeCrashReport(e, "Serializing interpolator");
+            CrashReportCategory category = crash.makeCategory("Serializing interpolator");
+            category.setDetail("Interpolator", interpolator::toString);
+            throw new ReportedException(crash);
+        }
+
+        return baos.toString();
+    }
+
+    private Interpolator deserializeInterpolator(String json) {
+        JsonReader jsonReader = new JsonReader(new StringReader(json));
+        try {
+            jsonReader.beginArray();
+            return deserializeInterpolator(jsonReader);
+        } catch (IOException e) {
+            CrashReport crash = CrashReport.makeCrashReport(e, "De-serializing interpolator");
+            CrashReportCategory category = crash.makeCategory("De-serializing interpolator");
+            category.addCrashSection("Interpolator", json);
+            throw new ReportedException(crash);
+        }
+    }
+}

src/main/java/com/replaymod/simplepathing/Setting.java

@@ -2,9 +2,25 @@ package com.replaymod.simplepathing;
 
 import com.replaymod.core.SettingsRegistry;
 
+import java.util.Arrays;
+import java.util.stream.Collectors;
+
 public final class Setting<T> extends SettingsRegistry.SettingKeys<T> {
     public static final Setting<Boolean> PATH_PREVIEW = make("pathpreview", "pathpreview", true);
-    public static final Setting<Boolean> LINEAR_INTERPOLATION = make("linear_interpolation", "linearinterpolation", false);
+    public static final SettingsRegistry.MultipleChoiceSettingKeys<String> DEFAULT_INTERPOLATION;
+
+    static {
+        String format = "replaymod.gui.editkeyframe.interpolator.%s.name";
+        DEFAULT_INTERPOLATION = new SettingsRegistry.MultipleChoiceSettingKeys<>(
+                "simplepathing", "interpolator", "replaymod.gui.settings.interpolator",
+                String.format(format, InterpolatorType.fromString("invalid returns default").getLocalizationKey())
+        );
+        DEFAULT_INTERPOLATION.setChoices(
+                Arrays.stream(InterpolatorType.values()).filter(i -> i != InterpolatorType.DEFAULT)
+                        .map(i -> String.format(format, i.getLocalizationKey()))
+                        .collect(Collectors.toList())
+        );
+    }
 
     private static <T> Setting<T> make(String key, String displayName, T defaultValue) {
         return new Setting<>(key, displayName, defaultValue);

src/main/java/com/replaymod/simplepathing/gui/GuiEditKeyframe.java

@@ -5,14 +5,27 @@ import com.replaymod.pathing.properties.TimestampProperty;
 import com.replaymod.replay.ReplayModReplay;
 import com.replaymod.replaystudio.pathing.change.Change;
 import com.replaymod.replaystudio.pathing.change.CombinedChange;
-import com.replaymod.replaystudio.pathing.change.UpdateKeyframeProperties;
+import com.replaymod.replaystudio.pathing.interpolation.CatmullRomSplineInterpolator;
+import com.replaymod.replaystudio.pathing.interpolation.CubicSplineInterpolator;
+import com.replaymod.replaystudio.pathing.interpolation.Interpolator;
+import com.replaymod.replaystudio.pathing.interpolation.LinearInterpolator;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
 import com.replaymod.replaystudio.pathing.path.Path;
+import com.replaymod.replaystudio.pathing.path.PathSegment;
+import com.replaymod.simplepathing.InterpolatorType;
+import com.replaymod.simplepathing.SPTimeline;
+import com.replaymod.simplepathing.SPTimeline.SPPath;
+import com.replaymod.simplepathing.Setting;
+import com.replaymod.simplepathing.properties.ExplicitInterpolationProperty;
+import de.johni0702.minecraft.gui.container.AbstractGuiContainer;
 import de.johni0702.minecraft.gui.container.GuiPanel;
 import de.johni0702.minecraft.gui.element.GuiButton;
 import de.johni0702.minecraft.gui.element.GuiLabel;
 import de.johni0702.minecraft.gui.element.GuiNumberField;
+import de.johni0702.minecraft.gui.element.GuiTooltip;
+import de.johni0702.minecraft.gui.element.IGuiClickable;
 import de.johni0702.minecraft.gui.element.IGuiLabel;
+import de.johni0702.minecraft.gui.element.advanced.GuiDropdownMenu;
 import de.johni0702.minecraft.gui.function.Typeable;
 import de.johni0702.minecraft.gui.layout.GridLayout;
 import de.johni0702.minecraft.gui.layout.HorizontalLayout;
@@ -20,10 +33,16 @@ import de.johni0702.minecraft.gui.layout.VerticalLayout;
 import de.johni0702.minecraft.gui.popup.AbstractGuiPopup;
 import de.johni0702.minecraft.gui.utils.Colors;
 import de.johni0702.minecraft.gui.utils.Consumer;
-import org.apache.commons.lang3.tuple.Triple;
+import lombok.Getter;
+import net.minecraft.client.resources.I18n;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.lwjgl.input.Keyboard;
 import org.lwjgl.util.ReadablePoint;
 
+import java.util.Map;
+import java.util.Optional;
+
 import static de.johni0702.minecraft.gui.utils.Utils.link;
 
 public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends AbstractGuiPopup<T> implements Typeable {
@@ -31,6 +50,11 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
         return new GuiNumberField().setPrecision(0).setValidateOnFocusChange(true);
     }
 
+    protected static final Logger logger = LogManager.getLogger();
+
+    protected final GuiPathing guiPathing;
+
+    protected final long time;
     protected final Keyframe keyframe;
     protected final Path path;
 
@@ -66,12 +90,13 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
                 .addElements(new VerticalLayout.Data(0.5, false), title, inputs, timePanel, buttons);
     }
 
-    public GuiEditKeyframe(GuiPathing gui, Path path, Keyframe keyframe, String type) {
+    public GuiEditKeyframe(GuiPathing gui, SPPath path, long time, String type) {
         super(ReplayModReplay.instance.getReplayHandler().getOverlay());
-        this.keyframe = keyframe;
-        this.path = path;
+        this.guiPathing = gui;
+        this.time = time;
+        this.path = gui.getMod().getCurrentTimeline().getPath(path);
+        this.keyframe = this.path.getKeyframe(time);
 
-        long time = keyframe.getTime();
         Consumer<String> updateSaveButtonState = s -> saveButton.setEnabled(canSave());
         timeMinField.setValue(time / 1000 / 60).onTextChanged(updateSaveButtonState);
         timeSecField.setValue(time / 1000 % 60).onTextChanged(updateSaveButtonState);
@@ -81,10 +106,11 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
         saveButton.onClick(() -> {
             Change change = save();
             long newTime = (timeMinField.getInteger() * 60 + timeSecField.getInteger()) * 1000 + timeMSecField.getInteger();
-            if (newTime != keyframe.getTime()) {
-                change = CombinedChange.createFromApplied(change, gui.moveKeyframe(path, keyframe, newTime));
+            if (newTime != time) {
+                change = CombinedChange.createFromApplied(change,
+                        gui.getMod().getCurrentTimeline().moveKeyframe(path, time, newTime));
             }
-            path.getTimeline().pushChange(change);
+            gui.getMod().getCurrentTimeline().getTimeline().pushChange(change);
             close();
         });
     }
@@ -114,7 +140,7 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
     protected abstract Change save();
 
     public static class Spectator extends GuiEditKeyframe<Spectator> {
-        public Spectator(GuiPathing gui, Path path, Keyframe keyframe) {
+        public Spectator(GuiPathing gui, SPPath path, long keyframe) {
             super(gui, path, keyframe, "spec");
 
             link(timeMinField, timeSecField, timeMSecField);
@@ -147,10 +173,10 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
                             timestampMSecField, new GuiLabel().setI18nText("replaymod.gui.milliseconds"));
         }
 
-        public Time(GuiPathing gui, Path path, Keyframe keyframe) {
+        public Time(GuiPathing gui, SPPath path, long keyframe) {
             super(gui, path, keyframe, "time");
 
-            keyframe.getValue(TimestampProperty.PROPERTY).ifPresent(time -> {
+            this.keyframe.getValue(TimestampProperty.PROPERTY).ifPresent(time -> {
                 timestampMinField.setValue(time / 1000 / 60);
                 timestampSecField.setValue(time / 1000 % 60);
                 timestampMSecField.setValue(time % 1000);
@@ -165,11 +191,7 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
         protected Change save() {
             int time = (timestampMinField.getInteger() * 60 + timestampSecField.getInteger()) * 1000
                     + timestampMSecField.getInteger();
-            Change change = UpdateKeyframeProperties.create(path, keyframe)
-                    .setValue(TimestampProperty.PROPERTY, time)
-                    .done();
-            change.apply(path.getTimeline());
-            return change;
+            return guiPathing.getMod().getCurrentTimeline().updateTimeKeyframe(keyframe.getTime(), time);
         }
 
         @Override
@@ -187,8 +209,11 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
         public final GuiNumberField pitchField = newGuiNumberField().setSize(60, 20).setPrecision(5);
         public final GuiNumberField rollField = newGuiNumberField().setSize(60, 20).setPrecision(5);
 
+        public final InterpolationPanel interpolationPanel = new InterpolationPanel();
+
         {
-            inputs.setLayout(new GridLayout().setCellsEqualSize(false).setColumns(4).setSpacingX(3).setSpacingY(5))
+            GuiPanel positionInputs = new GuiPanel()
+                    .setLayout(new GridLayout().setCellsEqualSize(false).setColumns(4).setSpacingX(3).setSpacingY(5))
                     .addElements(new GridLayout.Data(1, 0.5),
                             new GuiLabel().setI18nText("replaymod.gui.editkeyframe.xpos"), xField,
                             new GuiLabel().setI18nText("replaymod.gui.editkeyframe.camyaw"), yawField,
@@ -196,17 +221,20 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
                             new GuiLabel().setI18nText("replaymod.gui.editkeyframe.campitch"), pitchField,
                             new GuiLabel().setI18nText("replaymod.gui.editkeyframe.zpos"), zField,
                             new GuiLabel().setI18nText("replaymod.gui.editkeyframe.camroll"), rollField);
+
+            inputs.setLayout(new VerticalLayout().setSpacing(10)).addElements(new VerticalLayout.Data(0.5, false),
+                    positionInputs, interpolationPanel);
         }
 
-        public Position(GuiPathing gui, Path path, Keyframe keyframe) {
+        public Position(GuiPathing gui, SPPath path, long keyframe) {
             super(gui, path, keyframe, "pos");
 
-            keyframe.getValue(CameraProperties.POSITION).ifPresent(pos -> {
+            this.keyframe.getValue(CameraProperties.POSITION).ifPresent(pos -> {
                 xField.setValue(pos.getLeft());
                 yField.setValue(pos.getMiddle());
                 zField.setValue(pos.getRight());
             });
-            keyframe.getValue(CameraProperties.ROTATION).ifPresent(rot -> {
+            this.keyframe.getValue(CameraProperties.ROTATION).ifPresent(rot -> {
                 yawField.setValue(rot.getLeft());
                 pitchField.setValue(rot.getMiddle());
                 rollField.setValue(rot.getRight());
@@ -219,17 +247,176 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
 
         @Override
         protected Change save() {
-            Change change = UpdateKeyframeProperties.create(path, keyframe)
-                    .setValue(CameraProperties.POSITION, Triple.of(xField.getDouble(), yField.getDouble(), zField.getDouble()))
-                    .setValue(CameraProperties.ROTATION, Triple.of(yawField.getFloat(), pitchField.getFloat(), rollField.getFloat()))
-                    .done();
-            change.apply(path.getTimeline());
-            return change;
+            SPTimeline timeline = guiPathing.getMod().getCurrentTimeline();
+            Change positionChange = timeline.updatePositionKeyframe(time,
+                    xField.getDouble(), yField.getDouble(), zField.getDouble(),
+                    yawField.getFloat(), pitchField.getFloat(), rollField.getFloat()
+            );
+            Interpolator interpolator = interpolationPanel.getSettingsPanel().createInterpolator();
+            if (interpolationPanel.getInterpolatorType() == InterpolatorType.DEFAULT) {
+                return CombinedChange.createFromApplied(positionChange, timeline.setInterpolatorToDefault(time),
+                        timeline.setDefaultInterpolator(interpolator));
+            } else {
+                return CombinedChange.createFromApplied(positionChange, timeline.setInterpolator(time, interpolator));
+            }
         }
 
         @Override
         protected Position getThis() {
             return this;
         }
+
+        public class InterpolationPanel extends AbstractGuiContainer<InterpolationPanel> {
+
+            @Getter
+            private SettingsPanel settingsPanel;
+
+            private GuiDropdownMenu<InterpolatorType> dropdown;
+
+            public InterpolationPanel() {
+                setLayout(new VerticalLayout());
+
+                dropdown = new GuiDropdownMenu<InterpolatorType>()
+                        .setToString(s -> I18n.format(s.getI18nName()))
+                        .setValues(InterpolatorType.values()).setHeight(20)
+                        .onSelection(i -> setSettingsPanel(dropdown.getSelectedValue()));
+
+                // set hover tooltips
+                for (Map.Entry<InterpolatorType, IGuiClickable> e : dropdown.getDropdownEntries().entrySet()) {
+                    e.getValue().setTooltip(new GuiTooltip().setI18nText(e.getKey().getI18nDescription()));
+                }
+
+                GuiPanel dropdownPanel = new GuiPanel()
+                        .setLayout(new GridLayout().setCellsEqualSize(false).setColumns(2).setSpacingX(3).setSpacingY(5))
+                        .addElements(new GridLayout.Data(1, 0.5),
+                                new GuiLabel().setI18nText("replaymod.gui.editkeyframe.interpolator"), dropdown);
+
+
+                addElements(new VerticalLayout.Data(0.5, false), dropdownPanel);
+
+                Optional<PathSegment> segment = path.getSegments().stream()
+                        .filter(s -> s.getStartKeyframe() == keyframe).findFirst();
+                if (segment.isPresent()) {
+                    Interpolator interpolator = segment.get().getInterpolator();
+                    InterpolatorType type = InterpolatorType.fromClass(interpolator.getClass());
+                    if (keyframe.getValue(ExplicitInterpolationProperty.PROPERTY).isPresent()) {
+                        dropdown.setSelected(type); // trigger the callback once to display settings panel
+                    } else {
+                        setSettingsPanel(InterpolatorType.DEFAULT);
+                    }
+                    if (getInterpolatorTypeNoDefault(type).getInterpolatorClass().isInstance(interpolator)) {
+                        //noinspection unchecked
+                        settingsPanel.loadSettings(interpolator);
+                    }
+                } else {
+                    // Disable dropdown if this is the last keyframe
+                    dropdown.setDisabled();
+                }
+            }
+
+            public void setSettingsPanel(InterpolatorType type) {
+                removeElement(this.settingsPanel);
+
+                switch (getInterpolatorTypeNoDefault(type)) {
+                    case CATMULL_ROM:
+                        settingsPanel = new CatmullRomSettingsPanel();
+                        break;
+                    case CUBIC:
+                        settingsPanel = new CubicSettingsPanel();
+                        break;
+                    case LINEAR:
+                        settingsPanel = new LinearSettingsPanel();
+                        break;
+                }
+
+                addElements(new GridLayout.Data(0.5, 0.5), settingsPanel);
+            }
+
+            protected InterpolatorType getInterpolatorTypeNoDefault(InterpolatorType interpolatorType) {
+                if (interpolatorType == InterpolatorType.DEFAULT || interpolatorType == null) {
+                    InterpolatorType defaultType = InterpolatorType.fromString(
+                            guiPathing.getMod().getCore().getSettingsRegistry().get(Setting.DEFAULT_INTERPOLATION));
+                    return defaultType;
+                }
+                return interpolatorType;
+            }
+
+            public InterpolatorType getInterpolatorType() {
+                return dropdown.getSelectedValue();
+            }
+
+            @Override
+            protected InterpolationPanel getThis() {
+                return this;
+            }
+
+            public abstract class SettingsPanel<I extends Interpolator, T extends SettingsPanel<I, T>> extends AbstractGuiContainer<T> {
+
+                public abstract void loadSettings(I interpolator);
+
+                public abstract I createInterpolator();
+            }
+
+            public class CatmullRomSettingsPanel extends SettingsPanel<CatmullRomSplineInterpolator, CatmullRomSettingsPanel> {
+                public final GuiLabel alphaLabel = new GuiLabel().setColor(Colors.BLACK)
+                        .setI18nText("replaymod.gui.editkeyframe.interpolator.catmullrom.alpha");
+                public final GuiNumberField alphaField = new GuiNumberField().setSize(100, 20).setPrecision(5)
+                        .setMinValue(0).setValidateOnFocusChange(true);
+
+                {
+                    setLayout(new HorizontalLayout(HorizontalLayout.Alignment.CENTER));
+                    addElements(new HorizontalLayout.Data(0.5), alphaLabel, alphaField);
+                }
+
+                @Override
+                public void loadSettings(CatmullRomSplineInterpolator interpolator) {
+                    alphaField.setValue(interpolator.getAlpha());
+                }
+
+                @Override
+                public CatmullRomSplineInterpolator createInterpolator() {
+                    return new CatmullRomSplineInterpolator(alphaField.getDouble());
+                }
+
+                @Override
+                protected CatmullRomSettingsPanel getThis() {
+                    return this;
+                }
+            }
+
+            public class CubicSettingsPanel extends SettingsPanel<CubicSplineInterpolator, CubicSettingsPanel> {
+
+                @Override
+                public void loadSettings(CubicSplineInterpolator interpolator) {
+                }
+
+                @Override
+                public CubicSplineInterpolator createInterpolator() {
+                    return new CubicSplineInterpolator();
+                }
+
+                @Override
+                protected CubicSettingsPanel getThis() {
+                    return this;
+                }
+            }
+
+            public class LinearSettingsPanel extends SettingsPanel<LinearInterpolator, LinearSettingsPanel> {
+
+                @Override
+                public void loadSettings(LinearInterpolator interpolator) {
+                }
+
+                @Override
+                public LinearInterpolator createInterpolator() {
+                    return new LinearInterpolator();
+                }
+
+                @Override
+                protected LinearSettingsPanel getThis() {
+                    return this;
+                }
+            }
+        }
     }
 }

src/main/java/com/replaymod/simplepathing/gui/GuiKeyframeTimeline.java

@@ -1,7 +1,5 @@
 package com.replaymod.simplepathing.gui;
 
-import com.google.common.base.Function;
-import com.google.common.collect.Iterables;
 import com.replaymod.core.ReplayMod;
 import com.replaymod.pathing.properties.CameraProperties;
 import com.replaymod.pathing.properties.SpectatorProperty;
@@ -11,9 +9,10 @@ import com.replaymod.replaystudio.pathing.change.Change;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
 import com.replaymod.replaystudio.pathing.path.Path;
 import com.replaymod.replaystudio.pathing.path.PathSegment;
-import com.replaymod.replaystudio.pathing.path.Timeline;
 import com.replaymod.replaystudio.pathing.property.Property;
 import com.replaymod.simplepathing.ReplayModSimplePathing;
+import com.replaymod.simplepathing.SPTimeline;
+import com.replaymod.simplepathing.SPTimeline.SPPath;
 import de.johni0702.minecraft.gui.GuiRenderer;
 import de.johni0702.minecraft.gui.element.advanced.AbstractGuiTimeline;
 import de.johni0702.minecraft.gui.function.Draggable;
@@ -23,7 +22,6 @@ import org.lwjgl.util.Point;
 import org.lwjgl.util.ReadableDimension;
 import org.lwjgl.util.ReadablePoint;
 
-import javax.annotation.Nullable;
 import java.util.Comparator;
 import java.util.Optional;
 
@@ -37,14 +35,14 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
     private final GuiPathing gui;
 
     /**
-     * The keyframe that was last clicked on using the left mouse button.
+     * The keyframe (time on timeline) that was last clicked on using the left mouse button.
      */
-    private Keyframe lastClickedKeyframe;
+    private long lastClickedKeyframe;
 
     /**
-     * Id of the path of {@link #lastClickedKeyframe}.
+     * Path of {@link #lastClickedKeyframe}.
      */
-    private int lastClickedPath;
+    private SPPath lastClickedPath;
 
     /**
      * The time at which {@link #lastClickedKeyframe} was updated.
@@ -89,18 +87,13 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
 
         renderer.bindTexture(ReplayMod.TEXTURE);
 
-        for (Keyframe keyframe : Iterables.concat(Iterables.transform(mod.getCurrentTimeline().getPaths(), new Function<Path, Iterable<Keyframe>>() {
-            @Nullable
-            @Override
-            public Iterable<Keyframe> apply(@Nullable Path input) {
-                assert input != null;
-                return input.getKeyframes();
-            }
-        }))) {
+        SPTimeline timeline = mod.getCurrentTimeline();
+
+        timeline.getTimeline().getPaths().stream().flatMap(path -> path.getKeyframes().stream()).forEach(keyframe -> {
             if (keyframe.getTime() >= startTime && keyframe.getTime() <= endTime) {
                 double relativeTime = keyframe.getTime() - startTime;
                 int positonX = BORDER_LEFT + (int) (relativeTime / visibleTime * visibleWidth) - KEYFRAME_SIZE / 2;
-                int u = KEYFRAME_TEXTURE_X + (mod.getSelectedKeyframe() == keyframe ? KEYFRAME_SIZE : 0);
+                int u = KEYFRAME_TEXTURE_X + (mod.isSelected(keyframe) ? KEYFRAME_SIZE : 0);
                 int v = KEYFRAME_TEXTURE_Y;
                 if (keyframe.getValue(CameraProperties.POSITION).isPresent()) {
                     if (keyframe.getValue(SpectatorProperty.PROPERTY).isPresent()) {
@@ -113,10 +106,10 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
                     renderer.drawTexturedRect(positonX, BORDER_TOP + KEYFRAME_SIZE, u, v, KEYFRAME_SIZE, KEYFRAME_SIZE);
                 }
             }
-        }
+        });
 
         // Draw colored quads on spectator path segments
-        for (PathSegment segment : mod.getCurrentTimeline().getPaths().get(GuiPathing.POSITION_PATH).getSegments()) {
+        for (PathSegment segment : timeline.getPositionPath().getSegments()) {
             if (segment.getInterpolator() == null
                     || !segment.getInterpolator().getKeyframeProperties().contains(SpectatorProperty.PROPERTY)) {
                 continue; // Not a spectator segment
@@ -125,7 +118,7 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
         }
 
         // Draw red quads on time path segments that would require time going backwards
-        for (PathSegment segment : mod.getCurrentTimeline().getPaths().get(GuiPathing.TIME_PATH).getSegments()) {
+        for (PathSegment segment : timeline.getTimePath().getSegments()) {
             long startTimestamp = segment.getStartKeyframe().getValue(TimestampProperty.PROPERTY).orElseThrow(IllegalStateException::new);
             long endTimestamp = segment.getEndKeyframe().getValue(TimestampProperty.PROPERTY).orElseThrow(IllegalStateException::new);
             if (endTimestamp >= startTimestamp) {
@@ -162,29 +155,28 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
      * @param position The raw position
      * @return Pair of path id and keyframe or null when no keyframe was clicked
      */
-    private Pair<Integer, Keyframe> getKeyframe(ReadablePoint position) {
+    private Pair<SPPath, Long> getKeyframe(ReadablePoint position) {
         int time = getTimeAt(position.getX(), position.getY());
         if (time != -1) {
             Point mouse = new Point(position);
             getContainer().convertFor(this, mouse);
             int mouseY = mouse.getY();
             if (mouseY > BORDER_TOP && mouseY < BORDER_TOP + 2 * KEYFRAME_SIZE) {
-                Timeline timeline = gui.getMod().getCurrentTimeline();
-                int path;
+                SPPath path;
                 if (mouseY <= BORDER_TOP + KEYFRAME_SIZE) {
                     // Position keyframe
-                    path = GuiPathing.POSITION_PATH;
+                    path = SPPath.POSITION;
                 } else {
                     // Time keyframe
-                    path = GuiPathing.TIME_PATH;
+                    path = SPPath.TIME;
                 }
                 int visibleTime = (int) (getZoom() * getLength());
-                int tolerance = visibleTime * KEYFRAME_SIZE / (size.getWidth() - BORDER_LEFT - BORDER_RIGHT) / 2;
-                Optional<Keyframe> keyframe = timeline.getPaths().get(path).getKeyframes().stream()
+                int tolerance = visibleTime * KEYFRAME_SIZE / (getLastSize().getWidth() - BORDER_LEFT - BORDER_RIGHT) / 2;
+                Optional<Keyframe> keyframe = gui.getMod().getCurrentTimeline().getPath(path).getKeyframes().stream()
                         .filter(k -> Math.abs(k.getTime() - time) <= tolerance)
                         .sorted(Comparator.comparing(k -> Math.abs(k.getTime() - time)))
                         .findFirst();
-                return Pair.of(path, keyframe.orElse(null));
+                return Pair.of(path, keyframe.map(Keyframe::getTime).orElse(null));
             }
         }
         return Pair.of(null, null);
@@ -193,30 +185,31 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
     @Override
     public boolean mouseClick(ReadablePoint position, int button) {
         int time = getTimeAt(position.getX(), position.getY());
-        Pair<Integer, Keyframe> pathKeyframePair = getKeyframe(position);
+        Pair<SPPath, Long> pathKeyframePair = getKeyframe(position);
         if (pathKeyframePair.getRight() != null) {
+            SPPath path = pathKeyframePair.getLeft();
             // Clicked on keyframe
-            Keyframe keyframe = pathKeyframePair.getRight();
+            long keyframeTime = pathKeyframePair.getRight();
             if (button == 0) { // Left click
                 long now = Minecraft.getSystemTime();
-                if (lastClickedKeyframe == keyframe) {
+                if (lastClickedKeyframe == keyframeTime) {
                     // Clicked the same keyframe again, potentially a double click
                     if (now - lastClickedTime < DOUBLE_CLICK_INTERVAL) {
                         // Yup, double click, open the edit keyframe gui
-                        Path path = gui.getMod().getCurrentTimeline().getPaths().get(pathKeyframePair.getLeft());
-                        gui.openEditKeyframePopup(path, keyframe);
+                        gui.openEditKeyframePopup(path, keyframeTime);
                         return true;
                     }
                 }
                 // Not a double click, just update the click time and selection
                 lastClickedTime = now;
-                lastClickedKeyframe = keyframe;
-                lastClickedPath = pathKeyframePair.getLeft();
-                gui.getMod().setSelectedKeyframe(lastClickedKeyframe);
+                lastClickedKeyframe = keyframeTime;
+                lastClickedPath = path;
+                gui.getMod().setSelected(lastClickedPath, lastClickedKeyframe);
                 // We might be dragging
                 draggingStartX = position.getX();
                 dragging = true;
             } else if (button == 1) { // Right click
+                Keyframe keyframe = gui.getMod().getCurrentTimeline().getKeyframe(path, keyframeTime);
                 for (Property property : keyframe.getProperties()) {
                     applyPropertyToGame(property, keyframe);
                 }
@@ -226,12 +219,11 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
             // Clicked on timeline but not on any keyframe
             if (button == 0) { // Left click
                 setCursorPosition(time);
-                gui.getMod().setSelectedKeyframe(null);
+                gui.getMod().setSelected(null, 0);
             } else if (button == 1) { // Right click
                 if (pathKeyframePair.getLeft() != null) {
                     // Apply the value of the clicked path at the clicked position
-                    Timeline timeline = gui.getMod().getCurrentTimeline();
-                    Path path = timeline.getPaths().get(pathKeyframePair.getLeft());
+                    Path path = gui.getMod().getCurrentTimeline().getPath(pathKeyframePair.getLeft());
                     path.getKeyframes().stream().flatMap(k -> k.getProperties().stream()).distinct().forEach(
                             p -> applyPropertyToGame(p, path, time));
                 }
@@ -280,12 +272,13 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
             }
         }
         if (actuallyDragging) {
+            if (!gui.ensureEntityTracker(() -> mouseDrag(position, button, timeSinceLastCall))) return true;
             // Threshold passed
-            Path path = gui.getMod().getCurrentTimeline().getPaths().get(lastClickedPath);
+            SPTimeline timeline = gui.getMod().getCurrentTimeline();
             Point mouse = new Point(position);
             getContainer().convertFor(this, mouse);
             int mouseX = mouse.getX();
-            int width = size.getWidth();
+            int width = getLastSize().getWidth();
             int bodyWidth = width - BORDER_LEFT - BORDER_RIGHT;
             double segmentLength = getLength() * getZoom();
             double segmentTime =  segmentLength * (mouseX - BORDER_LEFT) / bodyWidth;
@@ -295,24 +288,21 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
             }
 
             // If there already is a keyframe at the target time, then increase the time by one until there is none
-            while (path.getKeyframe(newTime) != null) {
+            while (timeline.getKeyframe(lastClickedPath, newTime) != null) {
                 newTime++;
             }
 
             // First undo any previous changes
             if (draggingChange != null) {
-                draggingChange.undo(gui.getMod().getCurrentTimeline());
+                draggingChange.undo(timeline.getTimeline());
             }
 
             // Move keyframe to new position and
             // store change for later undoing / pushing to history
-            draggingChange = gui.moveKeyframe(path, lastClickedKeyframe, newTime);
+            draggingChange = timeline.moveKeyframe(lastClickedPath, lastClickedKeyframe, newTime);
 
             // Selected keyframe has been replaced
-            gui.getMod().setSelectedKeyframe(path.getKeyframe(newTime));
-
-            // Path has been changed
-            path.updateAll();
+            gui.getMod().setSelected(lastClickedPath, newTime);
         }
         return true;
     }
@@ -321,7 +311,7 @@ public class GuiKeyframeTimeline extends AbstractGuiTimeline<GuiKeyframeTimeline
     public boolean mouseRelease(ReadablePoint position, int button) {
         if (dragging) {
             if (actuallyDragging) {
-                gui.getMod().getCurrentTimeline().pushChange(draggingChange);
+                gui.getMod().getCurrentTimeline().getTimeline().pushChange(draggingChange);
                 draggingChange = null;
                 actuallyDragging = false;
             }

src/main/java/com/replaymod/simplepathing/gui/GuiPathing.java

@@ -14,25 +14,26 @@ import com.replaymod.render.gui.GuiRenderSettings;
 import com.replaymod.replay.ReplayHandler;
 import com.replaymod.replay.camera.CameraEntity;
 import com.replaymod.replay.gui.overlay.GuiReplayOverlay;
-import com.replaymod.replaystudio.pathing.change.*;
-import com.replaymod.replaystudio.pathing.interpolation.CubicSplineInterpolator;
-import com.replaymod.replaystudio.pathing.interpolation.Interpolator;
-import com.replaymod.replaystudio.pathing.interpolation.LinearInterpolator;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
 import com.replaymod.replaystudio.pathing.path.Path;
-import com.replaymod.replaystudio.pathing.path.PathSegment;
 import com.replaymod.replaystudio.pathing.path.Timeline;
-import com.replaymod.replaystudio.pathing.property.Property;
 import com.replaymod.replaystudio.pathing.serialize.TimelineSerialization;
 import com.replaymod.replaystudio.util.EntityPositionTracker;
-import com.replaymod.replaystudio.util.Location;
 import com.replaymod.simplepathing.ReplayModSimplePathing;
-import com.replaymod.simplepathing.Setting;
+import com.replaymod.simplepathing.SPTimeline;
+import com.replaymod.simplepathing.SPTimeline.SPPath;
 import de.johni0702.minecraft.gui.GuiRenderer;
 import de.johni0702.minecraft.gui.RenderInfo;
 import de.johni0702.minecraft.gui.container.GuiContainer;
 import de.johni0702.minecraft.gui.container.GuiPanel;
-import de.johni0702.minecraft.gui.element.*;
+import de.johni0702.minecraft.gui.element.AbstractGuiClickable;
+import de.johni0702.minecraft.gui.element.AbstractGuiElement;
+import de.johni0702.minecraft.gui.element.GuiElement;
+import de.johni0702.minecraft.gui.element.GuiHorizontalScrollbar;
+import de.johni0702.minecraft.gui.element.GuiLabel;
+import de.johni0702.minecraft.gui.element.GuiTexturedButton;
+import de.johni0702.minecraft.gui.element.GuiTooltip;
+import de.johni0702.minecraft.gui.element.IGuiClickable;
 import de.johni0702.minecraft.gui.element.advanced.GuiProgressBar;
 import de.johni0702.minecraft.gui.element.advanced.GuiTimelineTime;
 import de.johni0702.minecraft.gui.layout.CustomLayout;
@@ -43,9 +44,7 @@ import de.johni0702.minecraft.gui.popup.GuiInfoPopup;
 import de.johni0702.minecraft.gui.popup.GuiYesNoPopup;
 import de.johni0702.minecraft.gui.utils.Colors;
 import net.minecraft.crash.CrashReport;
-import net.minecraft.entity.Entity;
 import net.minecraftforge.fml.common.Loader;
-import org.apache.commons.lang3.tuple.Triple;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.lwjgl.input.Keyboard;
@@ -57,10 +56,7 @@ import org.lwjgl.util.WritablePoint;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import java.io.IOException;
-import java.util.ArrayList;
 import java.util.Collections;
-import java.util.List;
-import java.util.Optional;
 import java.util.function.Consumer;
 
 import static com.replaymod.core.utils.Utils.error;
@@ -71,9 +67,6 @@ import static com.replaymod.simplepathing.ReplayModSimplePathing.LOGGER;
  * Gui plug-in to the GuiReplayOverlay for simple pathing.
  */
 public class GuiPathing {
-    public static final int TIME_PATH = 0;
-    public static final int POSITION_PATH = 1;
-
     private static final Logger logger = LogManager.getLogger();
 
     public final GuiTexturedButton playPauseButton = new GuiTexturedButton() {
@@ -99,10 +92,11 @@ public class GuiPathing {
             if (!preparePathsForPlayback()) return;
 
             // Clone the timeline passed to the settings gui as it may be stored for later rendering in a queue
-            Timeline timeline = mod.getCurrentTimeline();
+            SPTimeline spTimeline = mod.getCurrentTimeline();
+            Timeline timeline;
             try {
-                TimelineSerialization serialization = new TimelineSerialization(mod, null);
-                String serialized = serialization.serialize(Collections.singletonMap("", timeline));
+                TimelineSerialization serialization = new TimelineSerialization(spTimeline, null);
+                String serialized = serialization.serialize(Collections.singletonMap("", spTimeline.getTimeline()));
                 timeline = serialization.deserialize(serialized).get("");
             } catch (Throwable t) {
                 error(LOGGER, replayHandler.getOverlay(), CrashReport.makeCrashReport(t, "Cloning timeline"), () -> {});
@@ -296,27 +290,28 @@ public class GuiPathing {
                 if (player.isActive()) {
                     player.getFuture().cancel(false);
                 } else {
-                    Timeline timeline = mod.getCurrentTimeline();
-                    Path timePath = timeline.getPaths().get(TIME_PATH);
+                    Path timePath = mod.getCurrentTimeline().getTimePath();
 
                     if (!preparePathsForPlayback()) return;
 
                     timePath.setActive(!Keyboard.isKeyDown(Keyboard.KEY_LSHIFT));
                     // Start from cursor time unless the control key is pressed (then start from beginning)
                     int startTime = Keyboard.isKeyDown(Keyboard.KEY_LCONTROL)? 0 : GuiPathing.this.timeline.getCursorPosition();
-                    ListenableFuture<Void> future = player.start(timeline, startTime);
+                    ListenableFuture<Void> future = player.start(mod.getCurrentTimeline().getTimeline(), startTime);
                     overlay.setCloseable(false);
                     overlay.setMouseVisible(true);
                     Futures.addCallback(future, new FutureCallback<Void>() {
                         @Override
                         public void onSuccess(@Nullable Void result) {
                             overlay.setCloseable(true);
+                            timePath.setActive(true);
                         }
 
                         @Override
                         public void onFailure(Throwable t) {
                             t.printStackTrace();
                             overlay.setCloseable(true);
+                            timePath.setActive(true);
                         }
                     });
                 }
@@ -326,26 +321,28 @@ public class GuiPathing {
         positionKeyframeButton.setTexturePosH(new ReadablePoint() {
             @Override
             public int getX() {
-                Keyframe keyframe = mod.getSelectedKeyframe();
-                if (keyframe == null || !keyframe.getValue(CameraProperties.POSITION).isPresent()) {
+                SPPath keyframePath = mod.getSelectedPath();
+                long keyframeTime = mod.getSelectedTime();
+                if (keyframePath != SPPath.POSITION) {
                     // No keyframe or wrong path
-                    keyframe = mod.getCurrentTimeline().getPaths().get(POSITION_PATH).getKeyframe(timeline.getCursorPosition());
+                    keyframeTime = timeline.getCursorPosition();
+                    keyframePath = mod.getCurrentTimeline().isPositionKeyframe(keyframeTime) ? SPPath.POSITION : null;
                 }
-                if (keyframe == null) {
+                if (keyframePath != SPPath.POSITION) {
                     return replayHandler.isCameraView() ? 0 : 40;
                 } else {
-                    return keyframe.getValue(SpectatorProperty.PROPERTY).isPresent() ? 40 : 0;
+                    return mod.getCurrentTimeline().isSpectatorKeyframe(keyframeTime) ? 40 : 0;
                 }
             }
 
             @Override
             public int getY() {
-                Keyframe keyframe = mod.getSelectedKeyframe();
-                if (keyframe == null || !keyframe.getValue(CameraProperties.POSITION).isPresent()) {
+                SPPath keyframePath = mod.getSelectedPath();
+                if (keyframePath != SPPath.POSITION) {
                     // No keyframe selected but there might be one at exactly the position of the cursor
-                    keyframe = mod.getCurrentTimeline().getPaths().get(POSITION_PATH).getKeyframe(timeline.getCursorPosition());
+                    keyframePath = mod.getCurrentTimeline().isPositionKeyframe(timeline.getCursorPosition()) ? SPPath.POSITION : null;
                 }
-                return keyframe != null && keyframe.getValue(CameraProperties.POSITION).isPresent() ? 60 : 40;
+                return keyframePath == SPPath.POSITION ? 60 : 40;
             }
 
             @Override
@@ -355,7 +352,7 @@ public class GuiPathing {
         }).onClick(new Runnable() {
             @Override
             public void run() {
-                updateKeyframe(false);
+                updateKeyframe(SPPath.POSITION);
             }
         });
 
@@ -367,12 +364,12 @@ public class GuiPathing {
 
             @Override
             public int getY() {
-                Keyframe keyframe = mod.getSelectedKeyframe();
-                if (keyframe == null || !keyframe.getValue(TimestampProperty.PROPERTY).isPresent()) {
+                SPPath keyframePath = mod.getSelectedPath();
+                if (keyframePath != SPPath.TIME) {
                     // No keyframe selected but there might be one at exactly the position of the cursor
-                    keyframe = mod.getCurrentTimeline().getPaths().get(TIME_PATH).getKeyframe(timeline.getCursorPosition());
+                    keyframePath = mod.getCurrentTimeline().isTimeKeyframe(timeline.getCursorPosition()) ? SPPath.TIME : null;
                 }
-                return keyframe != null && keyframe.getValue(TimestampProperty.PROPERTY).isPresent() ? 100 : 80;
+                return keyframePath == SPPath.TIME ? 100 : 80;
             }
 
             @Override
@@ -382,7 +379,7 @@ public class GuiPathing {
         }).onClick(new Runnable() {
             @Override
             public void run() {
-                updateKeyframe(true);
+                updateKeyframe(SPPath.TIME);
             }
         });
 
@@ -404,12 +401,12 @@ public class GuiPathing {
                 }
                 try {
                     GuiKeyframeRepository gui = new GuiKeyframeRepository(
-                            mod, replayHandler.getReplayFile(), mod.getCurrentTimeline());
+                            mod.getCurrentTimeline(), replayHandler.getReplayFile(), mod.getCurrentTimeline().getTimeline());
                     Futures.addCallback(gui.getFuture(), new FutureCallback<Timeline>() {
                         @Override
                         public void onSuccess(Timeline result) {
                             if (result != null) {
-                                mod.setCurrentTimeline(result);
+                                mod.setCurrentTimeline(new SPTimeline(result));
                             }
                         }
 
@@ -435,10 +432,10 @@ public class GuiPathing {
                 @Override
                 public void onSuccess(Boolean delete) {
                     if (delete) {
-                        Timeline timeline = mod.createTimeline();
-                        timeline.createPath();
-                        timeline.createPath();
-                        mod.setCurrentTimeline(timeline);
+                        mod.clearCurrentTimeline();
+                        if (entityTracker != null) {
+                            mod.getCurrentTimeline().setEntityTracker(entityTracker);
+                        }
                     }
                 }
 
@@ -455,7 +452,7 @@ public class GuiPathing {
             // Position of the cursor
             int cursor = timeline.getCursorPosition();
             // Get the last time keyframe before the cursor
-            mod.getCurrentTimeline().getPaths().get(TIME_PATH).getKeyframes().stream()
+            mod.getCurrentTimeline().getTimePath().getKeyframes().stream()
                     .filter(it -> it.getTime() <= cursor).reduce((__, last) -> last).ifPresent(keyframe -> {
                 // Cursor position at the keyframe
                 int keyframeCursor = (int) keyframe.getTime();
@@ -471,7 +468,7 @@ public class GuiPathing {
                 // Move cursor to new position
                 timeline.setCursorPosition(keyframeCursor + cursorPassed);
                 // Deselect keyframe to allow the user to add a new one right away
-                mod.setSelectedKeyframe(null);
+                mod.setSelected(null, 0);
             });
         });
 
@@ -479,8 +476,8 @@ public class GuiPathing {
             if (!overlay.isVisible()) {
                 return;
             }
-            if (mod.getSelectedKeyframe() != null) {
-                updateKeyframe(mod.getSelectedKeyframe().getValue(TimestampProperty.PROPERTY).isPresent());
+            if (mod.getSelectedPath() != null) {
+                updateKeyframe(mod.getSelectedPath());
             }
         });
 
@@ -511,13 +508,12 @@ public class GuiPathing {
     }
 
     private boolean preparePathsForPlayback() {
-        Timeline timeline = mod.getCurrentTimeline();
-        timeline.getPaths().get(TIME_PATH).updateAll();
-        timeline.getPaths().get(POSITION_PATH).updateAll();
+        SPTimeline timeline = mod.getCurrentTimeline();
+        timeline.getTimeline().getPaths().forEach(Path::updateAll);
 
         // Make sure time keyframes's values are monotonically increasing
         int lastTime = 0;
-        for (Keyframe keyframe : timeline.getPaths().get(TIME_PATH).getKeyframes()) {
+        for (Keyframe keyframe : timeline.getTimePath().getKeyframes()) {
             int time = keyframe.getValue(TimestampProperty.PROPERTY).orElseThrow(IllegalStateException::new);
             if (time < lastTime) {
                 // We are going backwards in time
@@ -531,8 +527,8 @@ public class GuiPathing {
         }
 
         // Make sure there are at least two position- and two time-keyframes
-        if (timeline.getPaths().get(POSITION_PATH).getSegments().isEmpty()
-                || timeline.getPaths().get(TIME_PATH).getSegments().isEmpty()) {
+        if (timeline.getPositionPath().getSegments().isEmpty()
+                || timeline.getTimePath().getSegments().isEmpty()) {
             GuiInfoPopup.open(replayHandler.getOverlay(), "replaymod.chat.morekeyframes");
             return false;
         }
@@ -544,19 +540,19 @@ public class GuiPathing {
         scrollbar.setZoom(scrollbar.getZoom() * factor);
     }
 
-    /**
-     * Called when either one of the property buttons is pressed.
-     * @param isTime {@code true} for the time property button, {@code false} for the place property button
-     */
-    private void updateKeyframe(final boolean isTime) {
+    public boolean ensureEntityTracker(Runnable withDelayedTracker) {
         if (entityTracker == null) {
+            LOGGER.debug("Entity tracker not yet loaded, delaying...");
             LoadEntityTrackerPopup popup = new LoadEntityTrackerPopup(replayHandler.getOverlay());
             entityTrackerLoadingProgress = p -> popup.progressBar.setProgress(p.floatValue());
             Futures.addCallback(entityTrackerFuture, new FutureCallback<Void>() {
                 @Override
                 public void onSuccess(@Nullable Void result) {
                     popup.close();
-                    updateKeyframe(isTime);
+                    if (mod.getCurrentTimeline().getEntityTracker() == null) {
+                        mod.getCurrentTimeline().setEntityTracker(entityTracker);
+                    }
+                    withDelayedTracker.run();
                 }
 
                 @Override
@@ -564,184 +560,63 @@ public class GuiPathing {
                     popup.close();
                 }
             });
-            return;
+            return false;
         }
+        if (mod.getCurrentTimeline().getEntityTracker() == null) {
+            mod.getCurrentTimeline().setEntityTracker(entityTracker);
+        }
+        return true;
+    }
+
+    /**
+     * Called when either one of the property buttons is pressed.
+     * @param path {@code TIME} for the time property button, {@code POSITION} for the place property button
+     */
+    private void updateKeyframe(SPPath path) {
+        LOGGER.debug("Updating keyframe on path {}" + path);
+        if (!ensureEntityTracker(() -> updateKeyframe(path))) return;
 
         int time = timeline.getCursorPosition();
-        Timeline timeline = mod.getCurrentTimeline();
-        Path path = timeline.getPaths().get(isTime ? TIME_PATH : POSITION_PATH);
+        SPTimeline timeline = mod.getCurrentTimeline();
 
-        Keyframe keyframe = mod.getSelectedKeyframe();
-        if (keyframe != null && keyframe.getValue(TimestampProperty.PROPERTY).isPresent() ^ isTime) {
-            // Keyframe is on the wrong timeline
-            keyframe = null;
-        }
-        if (keyframe == null) {
-            // No keyframe selected but there may still be one at this exact time
-            keyframe = path.getKeyframe(time);
-        }
-        Change change;
-        if (keyframe == null) {
-            change = AddKeyframe.create(path, time);
-            change.apply(timeline);
-            keyframe = path.getKeyframe(time);
-        } else {
-            change = RemoveKeyframe.create(path, keyframe);
-            change.apply(timeline);
-            keyframe = null;
-        }
-
-        if (keyframe != null) {
-            UpdateKeyframeProperties.Builder builder = UpdateKeyframeProperties.create(path, keyframe);
-            if (isTime) {
-                builder.setValue(TimestampProperty.PROPERTY, replayHandler.getReplaySender().currentTimeStamp());
-            } else {
-                CameraEntity camera = replayHandler.getCameraEntity();
-                builder.setValue(CameraProperties.POSITION, Triple.of(camera.posX, camera.posY, camera.posZ));
-                builder.setValue(CameraProperties.ROTATION, Triple.of(camera.rotationYaw, camera.rotationPitch, camera.roll));
-                if (!replayHandler.isCameraView()) {
-                    Entity spectated = replayHandler.getOverlay().getMinecraft().getRenderViewEntity();
-                    builder.setValue(SpectatorProperty.PROPERTY, spectated.getEntityId());
+        switch (path) {
+            case TIME:
+                if (mod.getSelectedPath() == path) {
+                    LOGGER.debug("Selected keyframe is time keyframe -> removing keyframe");
+                    timeline.removeTimeKeyframe(mod.getSelectedTime());
+                    mod.setSelected(null, 0);
+                } else if (timeline.isTimeKeyframe(time)) {
+                    LOGGER.debug("Keyframe at cursor position is time keyframe -> removing keyframe");
+                    timeline.removeTimeKeyframe(time);
+                    mod.setSelected(null, 0);
+                } else {
+                    LOGGER.debug("No time keyframe found -> adding new keyframe");
+                    timeline.addTimeKeyframe(time, replayHandler.getReplaySender().currentTimeStamp());
+                    mod.setSelected(path, time);
                 }
-            }
-            UpdateKeyframeProperties updateChange = builder.done();
-            updateChange.apply(timeline);
-            change = CombinedChange.createFromApplied(change, updateChange);
-
-            // If this new keyframe formed the first segment of the time path
-            if (isTime && path.getSegments().size() == 1) {
-                PathSegment segment = path.getSegments().iterator().next();
-                Interpolator interpolator = new LinearInterpolator();
-                interpolator.registerProperty(TimestampProperty.PROPERTY);
-                SetInterpolator setInterpolator = SetInterpolator.create(segment, interpolator);
-                setInterpolator.apply(timeline);
-                change = CombinedChange.createFromApplied(change, setInterpolator);
-            }
-        }
-
-        // Update interpolators for spectator keyframes
-        // while this is overkill, it is far simpler than updating differently for every possible case
-        if (!isTime) {
-            Change interpolators = updateInterpolators();
-            interpolators.apply(timeline);
-            change = CombinedChange.createFromApplied(change, interpolators);
-        }
-
-        Change specPosUpdate = updateSpectatorPositions();
-        specPosUpdate.apply(timeline);
-        change = CombinedChange.createFromApplied(change, specPosUpdate);
-
-        timeline.pushChange(change);
-
-        mod.setSelectedKeyframe(keyframe);
-    }
-
-    public Change updateInterpolators() {
-        boolean linearInterpolation = mod.getCore().getSettingsRegistry().get(Setting.LINEAR_INTERPOLATION);
-        List<Change> changes = new ArrayList<>();
-        Interpolator interpolator = null;
-        boolean isSpectatorInterpolator = false;
-        for (PathSegment segment : mod.getCurrentTimeline().getPaths().get(POSITION_PATH).getSegments()) {
-            if (segment.getStartKeyframe().getValue(SpectatorProperty.PROPERTY).isPresent()
-                    && segment.getEndKeyframe().getValue(SpectatorProperty.PROPERTY).isPresent()) {
-                // Spectator segment
-                if (!isSpectatorInterpolator) {
-                    isSpectatorInterpolator = true;
-                    interpolator = new LinearInterpolator();
-                    interpolator.registerProperty(SpectatorProperty.PROPERTY);
+                break;
+            case POSITION:
+                if (mod.getSelectedPath() == path) {
+                    LOGGER.debug("Selected keyframe is position keyframe -> removing keyframe");
+                    timeline.removePositionKeyframe(mod.getSelectedTime());
+                    mod.setSelected(null, 0);
+                } else if (timeline.isPositionKeyframe(time)) {
+                    LOGGER.debug("Keyframe at cursor position is position keyframe -> removing keyframe");
+                    timeline.removePositionKeyframe(time);
+                    mod.setSelected(null, 0);
+                } else {
+                    LOGGER.debug("No position keyframe found -> adding new keyframe");
+                    CameraEntity camera = replayHandler.getCameraEntity();
+                    int spectatedId = -1;
+                    if (!replayHandler.isCameraView()) {
+                        spectatedId = replayHandler.getOverlay().getMinecraft().getRenderViewEntity().getEntityId();
+                    }
+                    timeline.addPositionKeyframe(time, camera.posX, camera.posY, camera.posZ,
+                            camera.rotationYaw, camera.rotationPitch, camera.roll, spectatedId);
+                    mod.setSelected(path, time);
                 }
-                changes.add(SetInterpolator.create(segment, interpolator));
-            } else {
-                // Normal segment
-                if (isSpectatorInterpolator || interpolator == null) {
-                    isSpectatorInterpolator = false;
-                    interpolator = linearInterpolation ? new LinearInterpolator() : new CubicSplineInterpolator();
-                    interpolator.registerProperty(CameraProperties.POSITION);
-                    interpolator.registerProperty(CameraProperties.ROTATION);
-                }
-                changes.add(SetInterpolator.create(segment, interpolator));
-            }
+                break;
         }
-        return CombinedChange.create(changes.toArray(new Change[changes.size()]));
-    }
-
-    public Change updateSpectatorPositions() {
-        List<Change> changes = new ArrayList<>();
-        Path positionPath = mod.getCurrentTimeline().getPaths().get(POSITION_PATH);
-        Path timePath = mod.getCurrentTimeline().getPaths().get(TIME_PATH);
-        timePath.updateAll();
-        for (Keyframe keyframe : positionPath.getKeyframes()) {
-            Optional<Integer> spectator = keyframe.getValue(SpectatorProperty.PROPERTY);
-            if (spectator.isPresent()) {
-                Optional<Integer> time = timePath.getValue(TimestampProperty.PROPERTY, keyframe.getTime());
-                if (!time.isPresent()) {
-                    continue; // No time keyframes set at this video time, cannot determine replay time
-                }
-                Location expected = entityTracker.getEntityPositionAtTimestamp(spectator.get(), time.get());
-                if (expected == null) {
-                    continue; // We don't have any data on this entity for some reason
-                }
-                Triple<Double, Double, Double> pos = keyframe.getValue(CameraProperties.POSITION).orElse(Triple.of(0D, 0D, 0D));
-                Triple<Float, Float, Float> rot = keyframe.getValue(CameraProperties.ROTATION).orElse(Triple.of(0F, 0F, 0F));
-                Location actual = new Location(pos.getLeft(), pos.getMiddle(), pos.getRight(), rot.getLeft(), rot.getRight());
-                if (!expected.equals(actual)) {
-                    changes.add(UpdateKeyframeProperties.create(positionPath, keyframe)
-                            .setValue(CameraProperties.POSITION, Triple.of(expected.getX(), expected.getY(), expected.getZ()))
-                            .setValue(CameraProperties.ROTATION, Triple.of(expected.getYaw(), expected.getPitch(), 0f)).done()
-                    );
-                }
-            }
-        }
-        return CombinedChange.create(changes.toArray(new Change[changes.size()]));
-    }
-
-    public Change moveKeyframe(Path path, Keyframe keyframe, long newTime) {
-        Timeline timeline = mod.getCurrentTimeline();
-        // Interpolator might be required later (only if path is the time path)
-        Optional<Interpolator> interpolator =
-                path.getSegments().stream().findFirst().map(PathSegment::getInterpolator);
-
-        // First remove the old keyframe
-        Change removeChange = RemoveKeyframe.create(path, keyframe);
-        removeChange.apply(timeline);
-
-        // and add a new one at the correct time
-        Change addChange = AddKeyframe.create(path, newTime);
-        addChange.apply(timeline);
-        path.getKeyframe(newTime);
-
-        // Then copy over all properties
-        UpdateKeyframeProperties.Builder builder = UpdateKeyframeProperties.create(path, path.getKeyframe(newTime));
-        for (Property property : keyframe.getProperties()) {
-            copyProperty(property, keyframe, builder);
-        }
-        Change propertyChange = builder.done();
-        propertyChange.apply(timeline);
-
-        // Finally set the interpolators
-        Change interpolatorChange;
-        if (path.getTimeline().getPaths().indexOf(path) == GuiPathing.POSITION_PATH) {
-            // Position / Spectator keyframes need special handling
-            interpolatorChange = updateInterpolators();
-        } else {
-            // Time keyframes only need updating when only one segment of them exists
-            if (path.getSegments().size() == 1) {
-                interpolatorChange = SetInterpolator.create(path.getSegments().iterator().next(), interpolator.get());
-            } else {
-                interpolatorChange = CombinedChange.create(); // Noop change
-            }
-        }
-        interpolatorChange.apply(timeline);
-        // and update spectator positions
-        Change spectatorChange = updateSpectatorPositions();
-        spectatorChange.apply(timeline);
-
-        return CombinedChange.createFromApplied(removeChange, addChange, propertyChange, interpolatorChange, spectatorChange);
-    }
-
-    // Helper method because generics cannot be defined on blocks
-    private <T> void copyProperty(Property<T> property, Keyframe from, UpdateKeyframeProperties.Builder to) {
-        from.getValue(property).ifPresent(value -> to.setValue(property, value));
     }
 
     public ReplayModSimplePathing getMod() {
@@ -752,13 +627,15 @@ public class GuiPathing {
         return entityTracker;
     }
 
-    public void openEditKeyframePopup(Path path, Keyframe keyframe) {
+    public void openEditKeyframePopup(SPPath path, long time) {
+        if (!ensureEntityTracker(() -> openEditKeyframePopup(path, time))) return;
+        Keyframe keyframe = mod.getCurrentTimeline().getKeyframe(path, time);
         if (keyframe.getProperties().contains(SpectatorProperty.PROPERTY)) {
-            new GuiEditKeyframe.Spectator(this, path, keyframe).open();
+            new GuiEditKeyframe.Spectator(this, path, keyframe.getTime()).open();
         } else if (keyframe.getProperties().contains(CameraProperties.POSITION)) {
-            new GuiEditKeyframe.Position(this, path, keyframe).open();
+            new GuiEditKeyframe.Position(this, path, keyframe.getTime()).open();
         } else {
-            new GuiEditKeyframe.Time(this, path, keyframe).open();
+            new GuiEditKeyframe.Time(this, path, keyframe.getTime()).open();
         }
     }
 

src/main/java/com/replaymod/simplepathing/preview/PathPreview.java

@@ -8,7 +8,7 @@ import com.replaymod.replay.events.ReplayCloseEvent;
 import com.replaymod.replay.events.ReplayOpenEvent;
 import com.replaymod.simplepathing.ReplayModSimplePathing;
 import com.replaymod.simplepathing.Setting;
-import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import org.lwjgl.input.Keyboard;
 
@@ -23,7 +23,7 @@ public class PathPreview {
     }
 
     public void register() {
-        FMLCommonHandler.instance().bus().register(this);
+        MinecraftForge.EVENT_BUS.register(this);
 
         ReplayMod core = mod.getCore();
         mod.getCore().getKeyBindingRegistry().registerKeyBinding("replaymod.input.pathpreview", Keyboard.KEY_H, () -> {

src/main/java/com/replaymod/simplepathing/preview/PathPreviewRenderer.java

@@ -9,15 +9,15 @@ import com.replaymod.replaystudio.pathing.interpolation.Interpolator;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
 import com.replaymod.replaystudio.pathing.path.Path;
 import com.replaymod.replaystudio.pathing.path.PathSegment;
-import com.replaymod.replaystudio.pathing.path.Timeline;
 import com.replaymod.replaystudio.util.EntityPositionTracker;
 import com.replaymod.replaystudio.util.Location;
 import com.replaymod.simplepathing.ReplayModSimplePathing;
+import com.replaymod.simplepathing.SPTimeline;
 import com.replaymod.simplepathing.gui.GuiPathing;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.renderer.Tessellator;
-import net.minecraft.client.renderer.WorldRenderer;
+import net.minecraft.client.renderer.VertexBuffer;
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
 import net.minecraft.entity.Entity;
 import net.minecraft.util.ResourceLocation;
@@ -68,11 +68,11 @@ public class PathPreviewRenderer {
         if (guiPathing == null) return;
         EntityPositionTracker entityTracker = guiPathing.getEntityTracker();
 
-        Timeline timeline = mod.getCurrentTimeline();
+        SPTimeline timeline = mod.getCurrentTimeline();
         if (timeline == null) return;
-        Path path = timeline.getPaths().get(GuiPathing.POSITION_PATH);
+        Path path = timeline.getPositionPath();
         if (path.getKeyframes().isEmpty()) return;
-        Path timePath = timeline.getPaths().get(GuiPathing.TIME_PATH);
+        Path timePath = timeline.getTimePath();
 
         path.update();
 
@@ -97,8 +97,8 @@ public class PathPreviewRenderer {
                 if (spectator && entityTracker == null) {
                     continue; // Cannot render spectator positions when entity tracker is not yet loaded
                 }
-                // Spectator segments have 20 lines per second whereas normal segments have a fixed 100
-                long steps = spectator ? diff / 50 : 100;
+                // Spectator segments have 20 lines per second (at least 10) whereas normal segments have a fixed 100
+                long steps = spectator ? Math.max(diff / 50, 10) : 100;
                 Triple<Double, Double, Double> prevPos = null;
                 for (int i = 0; i <= steps; i++) {
                     long time = start.getTime() + diff * i / steps;
@@ -204,7 +204,7 @@ public class PathPreviewRenderer {
         if (distanceSquared(view, pos2) > renderDistanceSquared) return;
 
         Tessellator tessellator = Tessellator.getInstance();
-        WorldRenderer vertexBuffer = tessellator.getWorldRenderer();
+        VertexBuffer vertexBuffer = tessellator.getBuffer();
         vertexBuffer.setTranslation(-view.getLeft(), -view.getMiddle(), -view.getRight());
 
         vertexBuffer.begin(GL11.GL_LINES, DefaultVertexFormats.POSITION_COLOR);
@@ -231,7 +231,7 @@ public class PathPreviewRenderer {
                            Triple<Double, Double, Double> pos,
                            Keyframe keyframe) {
         Tessellator tessellator = Tessellator.getInstance();
-        WorldRenderer vertexBuffer = tessellator.getWorldRenderer();
+        VertexBuffer vertexBuffer = tessellator.getBuffer();
         vertexBuffer.setTranslation(0, 0, 0);
 
         mc.renderEngine.bindTexture(TEXTURE);
@@ -240,7 +240,7 @@ public class PathPreviewRenderer {
         float posY = 0f;
         float size = 10f / ReplayMod.TEXTURE_SIZE;
 
-        if (keyframe == mod.getSelectedKeyframe()) {
+        if (mod.isSelected(keyframe)) {
             posY += size;
         }
 
@@ -280,7 +280,7 @@ public class PathPreviewRenderer {
                             Triple<Double, Double, Double> pos,
                             Triple<Float, Float, Float> rot) {
         Tessellator tessellator = Tessellator.getInstance();
-        WorldRenderer vertexBuffer = tessellator.getWorldRenderer();
+        VertexBuffer vertexBuffer = tessellator.getBuffer();
         vertexBuffer.setTranslation(0, 0, 0);
 
         mc.renderEngine.bindTexture(CAMERA_HEAD);

src/main/java/com/replaymod/simplepathing/properties/ExplicitInterpolationProperty.java

@@ -0,0 +1,44 @@
+package com.replaymod.simplepathing.properties;
+
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import com.replaymod.replaystudio.pathing.property.AbstractProperty;
+import com.replaymod.replaystudio.pathing.property.PropertyPart;
+import lombok.NonNull;
+import org.apache.commons.lang3.ObjectUtils;
+
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * Property indicating that the next path segment's interpolator is fixed
+ */
+public class ExplicitInterpolationProperty extends AbstractProperty<Object> {
+    public static final ExplicitInterpolationProperty PROPERTY = new ExplicitInterpolationProperty();
+
+    private ExplicitInterpolationProperty() {
+        super("interpolationFixed", "<internal>", null, new Object());
+    }
+
+    @Override
+    public Collection<PropertyPart<Object>> getParts() {
+        return Collections.emptyList();
+    }
+
+    @Override
+    public void applyToGame(Object value, @NonNull Object replayHandler) {
+        // dummy property, do nothing
+    }
+
+    @Override
+    public void toJson(JsonWriter writer, Object value) throws IOException {
+        writer.nullValue();
+    }
+
+    @Override
+    public Object fromJson(JsonReader reader) throws IOException {
+        reader.nextNull();
+        return ObjectUtils.NULL;
+    }
+}

src/main/resources/META-INF/replaymod_at.cfg

@@ -1,7 +1,7 @@
 # To apply changes in this file run: ./gradlew clean setupDecompWorkspace idea
 
 # Minecraft
-public net.minecraft.client.Minecraft field_71428_T # timer
+public-f net.minecraft.client.Minecraft field_71428_T # timer
 public net.minecraft.client.Minecraft field_83002_am # debugCrashKeyPressTime
 public net.minecraft.client.Minecraft field_71467_ac # rightClickDelayTimer
 public net.minecraft.client.Minecraft field_71423_H # systemTime
@@ -21,23 +21,23 @@ public net.minecraft.client.Minecraft func_147112_ai()V # middleClickMouse
 public net.minecraft.client.Minecraft func_147115_a(Z)V # sendClickBlockToController
 
 # Packets
-public net.minecraft.network.play.server.S0FPacketSpawnMob field_149043_l # dataWatcher
+public net.minecraft.network.play.server.SPacketSpawnMob field_149043_l # dataManager
+public net.minecraft.network.play.server.SPacketSpawnPlayer field_148960_i # watcher
 #public net.minecraft.network.play.server.S38PacketPlayerListItem field_179964_d # profile
-public net.minecraft.network.play.server.S1DPacketEntityEffect field_149434_a # entityId
-public net.minecraft.network.play.server.S1CPacketEntityMetadata field_149379_a # entityId
-public net.minecraft.network.play.server.S1CPacketEntityMetadata field_149378_b # list
-public net.minecraft.network.play.server.S0BPacketAnimation field_148981_a # entityId
-public net.minecraft.network.play.server.S02PacketChat field_179842_b # position
-public net.minecraft.network.play.server.S19PacketEntityStatus field_149164_a # entityId
-public net.minecraft.network.play.server.S0CPacketSpawnPlayer *
-public net.minecraft.network.play.server.S18PacketEntityTeleport *
-public net.minecraft.network.play.server.S14PacketEntity *
-public net.minecraft.network.play.server.S19PacketEntityHeadLook *
-public net.minecraft.network.play.server.S12PacketEntityVelocity *
-public net.minecraft.network.play.server.S04PacketEntityEquipment *
-public net.minecraft.network.play.server.S1BPacketEntityAttach *
-public net.minecraft.network.play.server.S0DPacketCollectItem *
-public net.minecraft.network.play.server.S13PacketDestroyEntities *
+# public net.minecraft.network.play.server.S1DPacketEntityEffect field_149434_a # entityId
+# public net.minecraft.network.play.server.S1CPacketEntityMetadata field_149379_a # entityId
+# public net.minecraft.network.play.server.S1CPacketEntityMetadata field_149378_b # list
+# public net.minecraft.network.play.server.S0BPacketAnimation field_148981_a # entityId
+# public net.minecraft.network.play.server.S02PacketChat field_179842_b # position
+# public net.minecraft.network.play.server.S19PacketEntityStatus field_149164_a # entityId
+# public net.minecraft.network.play.server.S18PacketEntityTeleport *
+# public net.minecraft.network.play.server.S14PacketEntity *
+# public net.minecraft.network.play.server.S19PacketEntityHeadLook *
+# public net.minecraft.network.play.server.S12PacketEntityVelocity *
+# public net.minecraft.network.play.server.S04PacketEntityEquipment *
+# public net.minecraft.network.play.server.S1BPacketEntityAttach *
+# public net.minecraft.network.play.server.S0DPacketCollectItem *
+# public net.minecraft.network.play.server.S13PacketDestroyEntities *
 
 # GuiTextField
 public net.minecraft.client.gui.GuiTextField field_146216_j # text
@@ -61,7 +61,7 @@ public net.minecraft.client.renderer.RenderGlobal field_175009_l # chunksToUpdat
 public net.minecraft.client.renderer.RenderGlobal field_72755_R # renderInfos
 public net.minecraft.client.renderer.RenderGlobal field_175009_l # chunksToUpdate
 public net.minecraft.client.renderer.RenderGlobal field_72740_G # renderEntitiesStartupCounter
-public net.minecraft.client.renderer.RenderGlobal func_174983_a(Lnet.minecraft.util.BlockPos;Lnet.minecraft.client.renderer.chunk.RenderChunk;)Z # isPositionInRenderChunk
+# public net.minecraft.client.renderer.RenderGlobal func_174983_a(Lnet.minecraft.util.BlockPos;Lnet.minecraft.client.renderer.chunk.RenderChunk;)Z # isPositionInRenderChunk
 
 public net.minecraft.client.renderer.RenderGlobal$ContainerLocalRenderInformation
 #public net.minecraft.client.renderer.RenderGlobal$ContainerLocalRenderInformation field_178553_a # renderChunk
@@ -88,17 +88,17 @@ public net.minecraft.entity.player.EntityPlayer *
 public net.minecraft.client.entity.EntityOtherPlayerMP *
 
 # EffectRenderer
-public net.minecraft.client.particle.EffectRenderer field_110737_b # particleTextures
-public net.minecraft.client.particle.EffectRenderer field_78876_b # fxLayers
+# public net.minecraft.client.particle.EffectRenderer field_110737_b # particleTextures
+# public net.minecraft.client.particle.EffectRenderer field_78876_b # fxLayers
 
 # IntegratedServer
 public net.minecraft.server.integrated.IntegratedServer field_71348_o # isGamePaused
 
 # GameSettings
-public net.minecraft.client.settings.GameSettings field_151446_aD # mapSoundLevels
+public-f net.minecraft.client.settings.GameSettings field_186714_aM # soundLevels
 
 # Frustum
-public net.minecraft.client.renderer.culling.Frustum field_78552_a # clippingHelper
+public-f net.minecraft.client.renderer.culling.Frustum field_78552_a # clippingHelper
 
 # CrashReportCategory
 public net.minecraft.crash.CrashReportCategory field_85077_c # children
@@ -117,5 +117,12 @@ public net.minecraft.client.renderer.GlStateManager$FogState
 public net.minecraft.client.renderer.GlStateManager$BooleanState
 public net.minecraft.client.renderer.GlStateManager$BooleanState *
 
+# EntityLivingBase
+public net.minecraft.entity.EntityLivingBase field_184621_as # HAND_STATES
+public net.minecraft.entity.EntityLivingBase field_184628_bn # activeItemStackUseCount
+
+# EntityLivingBase
+public net.minecraft.client.particle.Particle *
+
 # Example
 # public net.minecraft.package.ClassName func_some_id(Ljava/lang/Class;IZS)V # methodName

src/main/resources/assets/replaymod/lang/en_US.lang

@@ -292,6 +292,7 @@ replaymod.gui.settings.title=Replay Mod Settings
 
 replaymod.gui.settings.interpolation.linear=Linear
 replaymod.gui.settings.interpolation.cubic=Cubic
+replaymod.gui.settings.interpolation.catmullrom=Catmull Rom
 
 replaymod.gui.settings.bitrate=Video Bitrate
 replaymod.gui.settings.framerate=Video Framerate
@@ -309,6 +310,7 @@ replaymod.gui.settings.keyframecleancallback=Clear Confirmation
 replaymod.gui.settings.renderinvisible=Render invisible Entities
 replaymod.gui.settings.camera=Camera
 replaymod.gui.settings.showchat=Show Chat
+replaymod.gui.settings.interpolator=Default Interpolator
 
 replaymod.gui.settings.warning.linea=WARNING: Recording settings will be
 replaymod.gui.settings.warning.lineb=applied the next time you join a world.
@@ -372,6 +374,17 @@ replaymod.gui.editkeyframe.spec.method.shoulder.pitch=Pitch Offset
 replaymod.gui.editkeyframe.spec.method.shoulder.yaw=Rotation Angle
 replaymod.gui.editkeyframe.spec.method.shoulder.smoothness=Path Smoothness
 
+replaymod.gui.editkeyframe.interpolator=Interpolator
+replaymod.gui.editkeyframe.interpolator.default.name=Default Interpolator
+replaymod.gui.editkeyframe.interpolator.default.desc=Uses the default interpolator defined in the Replay Mod Settings.
+replaymod.gui.editkeyframe.interpolator.catmullrom.name=Catmull Rom Spline Interpolator
+replaymod.gui.editkeyframe.interpolator.catmullrom.desc=Calculates a catmull rom spline with customizable alpha value for precise tightness and smoothness of the camera path.
+replaymod.gui.editkeyframe.interpolator.catmullrom.alpha=Alpha:
+replaymod.gui.editkeyframe.interpolator.cubic.name=Cubic Spline Interpolator
+replaymod.gui.editkeyframe.interpolator.cubic.desc=Calculates a cubic equation matrix for all points for a smooth camera path.
+replaymod.gui.editkeyframe.interpolator.linear.name=Linear Interpolator
+replaymod.gui.editkeyframe.interpolator.linear.desc=Draws straight lines between the keyframes.
+
 #Render Settings GUI
 replaymod.gui.rendersettings.title=Rendering Options
 replaymod.gui.rendersettings.renderer=Rendering Method

src/main/resources/dst_root_ca_x3.pem

@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

src/main/resources/mixins.recording.replaymod.json

@@ -7,7 +7,9 @@
     "MixinNetHandlerLoginClient",
     "MixinNetHandlerPlayClient",
     "MixinNetworkDispatcher",
-    "MixinRenderGlobal"
+    "MixinPlayerControllerMP",
+    "MixinRenderGlobal",
+    "MixinWorldClient"
   ],
   "compatibilityLevel": "JAVA_8",
   "refmap": "mixins.replaymod.refmap.json"

src/main/resources/mixins.render.replaymod.json

@@ -2,10 +2,9 @@
   "required": true,
   "package": "com.replaymod.render.mixin",
   "mixins": [
-    "MixinEffectRenderer",
     "MixinEntityRenderer",
+    "MixinParticleManager",
     "MixinRender",
-    "MixinRendererLivingEntity",
     "MixinRenderGlobal",
     "MixinRenderManager"
   ],

src/main/resources/mixins.replay.replaymod.json

@@ -2,12 +2,13 @@
   "required": true,
   "package": "com.replaymod.replay.mixin",
   "mixins": [
-    "MixinArmorStandRenderer",
     "MixinGuiSpectator",
+    "MixinParticleManager",
     "MixinPlayerControllerMP",
+    "MixinRenderArmorStand",
     "MixinRenderArrow",
-    "MixinRendererLivingEntity",
     "MixinRenderItem",
+    "MixinRenderLivingBase",
     "MixinRenderManager",
     "MixinTileEntityEndPortalRenderer",
     "MixinViewFrustum",

src/test/java/com/replaymod/simplepathing/SPTimelineTest.java

@@ -0,0 +1,626 @@
+package com.replaymod.simplepathing;
+
+import com.google.common.collect.Iterables;
+import com.replaymod.pathing.properties.CameraProperties;
+import com.replaymod.pathing.properties.SpectatorProperty;
+import com.replaymod.pathing.properties.TimestampProperty;
+import com.replaymod.replaystudio.pathing.change.Change;
+import com.replaymod.replaystudio.pathing.interpolation.CatmullRomSplineInterpolator;
+import com.replaymod.replaystudio.pathing.interpolation.Interpolator;
+import com.replaymod.replaystudio.pathing.interpolation.LinearInterpolator;
+import com.replaymod.replaystudio.pathing.path.Keyframe;
+import com.replaymod.replaystudio.pathing.path.Path;
+import com.replaymod.replaystudio.pathing.path.PathSegment;
+import com.replaymod.replaystudio.pathing.path.Timeline;
+import com.replaymod.replaystudio.util.EntityPositionTracker;
+import com.replaymod.replaystudio.util.Location;
+import com.replaymod.simplepathing.SPTimeline.SPPath;
+import org.apache.commons.lang3.tuple.Triple;
+import org.apache.logging.log4j.LogManager;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.IdentityHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+
+public class SPTimelineTest {
+    private SPTimeline impl;
+    private Timeline timeline;
+
+    @BeforeClass
+    public static void setupLogger() {
+        ReplayModSimplePathing.LOGGER = LogManager.getLogger();
+    }
+
+    @Before
+    public void setup() {
+        impl = new SPTimeline();
+        impl.setDefaultInterpolatorType(InterpolatorType.CUBIC);
+        impl.setEntityTracker(new EntityPositionTrackerMock());
+        timeline = impl.getTimeline();
+    }
+
+    @Test
+    public void testGetPath() {
+        assertSame(impl.getTimeline().getPaths().get(0), impl.getTimePath());
+        assertSame(impl.getTimeline().getPaths().get(0), impl.getPath(SPPath.TIME));
+        assertSame(impl.getTimeline().getPaths().get(1), impl.getPositionPath());
+        assertSame(impl.getTimeline().getPaths().get(1), impl.getPath(SPPath.POSITION));
+    }
+
+    @Test
+    public void testGetKeyframe() {
+        assertSame(timeline.getPaths().get(0).insert(123), impl.getKeyframe(SPPath.TIME, 123));
+        assertSame(timeline.getPaths().get(1).insert(456), impl.getKeyframe(SPPath.POSITION, 456));
+    }
+
+    @Test
+    public void testIsTimeKeyframe() {
+        impl.getTimePath().insert(123);
+        impl.getPositionPath().insert(456);
+        impl.getPositionPath().insert(42).setValue(SpectatorProperty.PROPERTY, 42);
+        assertTrue(impl.isTimeKeyframe(123));
+        assertFalse(impl.isTimeKeyframe(456));
+        assertFalse(impl.isTimeKeyframe(789));
+        assertFalse(impl.isTimeKeyframe(42));
+    }
+
+    @Test
+    public void testIsPositionKeyframe() {
+        impl.getTimePath().insert(123);
+        impl.getPositionPath().insert(456);
+        impl.getPositionPath().insert(42).setValue(SpectatorProperty.PROPERTY, 42);
+        assertFalse(impl.isPositionKeyframe(123));
+        assertTrue(impl.isPositionKeyframe(456));
+        assertFalse(impl.isPositionKeyframe(789));
+        assertTrue(impl.isSpectatorKeyframe(42));
+    }
+
+    @Test
+    public void testIsSpectatorKeyframe() {
+        impl.getTimePath().insert(123);
+        impl.getPositionPath().insert(456);
+        impl.getPositionPath().insert(42).setValue(SpectatorProperty.PROPERTY, 42);
+        assertFalse(impl.isSpectatorKeyframe(123));
+        assertFalse(impl.isSpectatorKeyframe(456));
+        assertFalse(impl.isSpectatorKeyframe(789));
+        assertTrue(impl.isSpectatorKeyframe(42));
+    }
+
+    @Test
+    public void testAddPositionKeyframe() {
+        assertNull(timeline.peekUndoStack());
+        impl.addPositionKeyframe(0, 1, 2, 3, 4, 5, 6, -1);
+        assertNotNull(timeline.peekUndoStack());
+        Keyframe keyframe = impl.getKeyframe(SPPath.POSITION, 0);
+        assertNotNull(keyframe);
+        assertEquals(keyframe.getValue(CameraProperties.POSITION), Optional.of(Triple.of(1d, 2d, 3d)));
+        assertEquals(keyframe.getValue(CameraProperties.ROTATION), Optional.of(Triple.of(4f, 5f, 6f)));
+        assertFalse(keyframe.getValue(SpectatorProperty.PROPERTY).isPresent());
+        timeline.undoLastChange();
+        assertNull(timeline.peekUndoStack());
+        assertNull(impl.getKeyframe(SPPath.POSITION, 0));
+    }
+
+    @Test
+    public void testAddPositionKeyframeSpectator() {
+        assertNull(timeline.peekUndoStack());
+        impl.addPositionKeyframe(0, 1, 2, 3, 4, 5, 6, 7);
+        assertNotNull(timeline.peekUndoStack());
+        Keyframe keyframe = impl.getKeyframe(SPPath.POSITION, 0);
+        assertNotNull(keyframe);
+        assertEquals(keyframe.getValue(CameraProperties.POSITION), Optional.of(Triple.of(1d, 2d, 3d)));
+        assertEquals(keyframe.getValue(CameraProperties.ROTATION), Optional.of(Triple.of(4f, 5f, 6f)));
+        assertEquals(keyframe.getValue(SpectatorProperty.PROPERTY), Optional.of(7));
+        timeline.undoLastChange();
+        assertNull(timeline.peekUndoStack());
+        assertNull(impl.getKeyframe(SPPath.POSITION, 0));
+    }
+
+    @Test
+    public void testPositionKeyframeSpectatorPosition() {
+        Keyframe keyframe;
+        impl.addTimeKeyframe(0, 0);
+        impl.addTimeKeyframe(9, 9);
+
+        impl.addPositionKeyframe(4, 1, 2, 3, 4, 5, 6, 1);
+        keyframe = impl.getKeyframe(SPPath.POSITION, 4);
+        assertEquals(keyframe.getValue(CameraProperties.POSITION), Optional.of(Triple.of(1d, 2d, 3d)));
+        assertEquals(keyframe.getValue(CameraProperties.ROTATION), Optional.of(Triple.of(4f, 5f, 6f)));
+
+        impl.addPositionKeyframe(6, 1, 2, 3, 4, 5, 6, 42);
+        keyframe = impl.getKeyframe(SPPath.POSITION, 6);
+        assertEquals(keyframe.getValue(CameraProperties.POSITION), Optional.of(Triple.of(12d, 0d, 0d)));
+        assertEquals(keyframe.getValue(CameraProperties.ROTATION), Optional.of(Triple.of(0f, 0f, 0f)));
+
+        impl.addPositionKeyframe(8, 1, 2, 3, 4, 5, 6, 42);
+        keyframe = impl.getKeyframe(SPPath.POSITION, 8);
+        assertEquals(keyframe.getValue(CameraProperties.POSITION), Optional.of(Triple.of(16d, 0d, 0d)));
+        assertEquals(keyframe.getValue(CameraProperties.ROTATION), Optional.of(Triple.of(0f, 0f, 0f)));
+
+        impl.addPositionKeyframe(10, 1, 2, 3, 4, 5, 6, 42);
+        keyframe = impl.getKeyframe(SPPath.POSITION, 10);
+        assertEquals(keyframe.getValue(CameraProperties.POSITION), Optional.of(Triple.of(1d, 2d, 3d)));
+        assertEquals(keyframe.getValue(CameraProperties.ROTATION), Optional.of(Triple.of(4f, 5f, 6f)));
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testAddPositionKeyframeDuplicate() {
+        impl.addPositionKeyframe(0, 1, 2, 3, 4, 5, 6, -1);
+        impl.addPositionKeyframe(0, 1, 2, 3, 4, 5, 6, -1);
+    }
+
+    @Test
+    public void testUpdatePositionKeyframe() {
+        impl.addPositionKeyframe(0, 1, 2, 3, 4, 5, 6, -1);
+        Change change = impl.updatePositionKeyframe(0, 7, 8, 9, 10, 11, 12);
+        assertNotNull(change);
+        Keyframe keyframe = impl.getKeyframe(SPPath.POSITION, 0);
+        assertEquals(keyframe.getValue(CameraProperties.POSITION), Optional.of(Triple.of(7d, 8d, 9d)));
+        assertEquals(keyframe.getValue(CameraProperties.ROTATION), Optional.of(Triple.of(10f, 11f, 12f)));
+        assertFalse(keyframe.getValue(SpectatorProperty.PROPERTY).isPresent());
+        change.undo(timeline);
+        keyframe = impl.getKeyframe(SPPath.POSITION, 0);
+        assertEquals(keyframe.getValue(CameraProperties.POSITION), Optional.of(Triple.of(1d, 2d, 3d)));
+        assertEquals(keyframe.getValue(CameraProperties.ROTATION), Optional.of(Triple.of(4f, 5f, 6f)));
+        assertFalse(keyframe.getValue(SpectatorProperty.PROPERTY).isPresent());
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testUpdatePositionKeyframeNoKeyframe() {
+        impl.updatePositionKeyframe(0, 1, 2, 3, 4, 5, 6);
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testUpdatePositionKeyframeSpectatorKeyframe() {
+        impl.addPositionKeyframe(0, 1, 2, 3, 4, 5, 6, 7);
+        impl.updatePositionKeyframe(0, 1, 2, 3, 4, 5, 6);
+    }
+
+    @Test
+    public void testRemovePositionKeyframe() {
+        impl.addPositionKeyframe(0, 1, 2, 3, 4, 5, 6, -1);
+        impl.removePositionKeyframe(0);
+        assertNull(impl.getKeyframe(SPPath.POSITION, 0));
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testRemovePositionKeyframeNoKeyframe() {
+        impl.removePositionKeyframe(0);
+    }
+
+    @Test
+    public void testAddTimeKeyframe() {
+        assertNull(timeline.peekUndoStack());
+        impl.addTimeKeyframe(0, 1);
+        assertNotNull(timeline.peekUndoStack());
+        Keyframe keyframe = impl.getKeyframe(SPPath.TIME, 0);
+        assertNotNull(keyframe);
+        assertEquals(keyframe.getValue(TimestampProperty.PROPERTY), Optional.of(1));
+        timeline.undoLastChange();
+        assertNull(timeline.peekUndoStack());
+        assertNull(impl.getKeyframe(SPPath.TIME, 0));
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testAddTimeKeyframeDuplicate() {
+        impl.addTimeKeyframe(0, 1);
+        impl.addTimeKeyframe(0, 1);
+    }
+
+    @Test
+    public void testUpdateTimeKeyframe() {
+        impl.addTimeKeyframe(0, 1);
+        Change change = impl.updateTimeKeyframe(0, 2);
+        assertNotNull(change);
+        assertEquals(impl.getKeyframe(SPPath.TIME, 0).getValue(TimestampProperty.PROPERTY), Optional.of(2));
+        change.undo(timeline);
+        assertEquals(impl.getKeyframe(SPPath.TIME, 0).getValue(TimestampProperty.PROPERTY), Optional.of(1));
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testUpdateTimeKeyframeNoKeyframe() {
+        impl.updateTimeKeyframe(0, 1);
+    }
+
+    @Test
+    public void testRemoveTimeKeyframe() {
+        impl.addTimeKeyframe(0, 1);
+        impl.removeTimeKeyframe(0);
+        assertNull(impl.getKeyframe(SPPath.TIME, 0));
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testRemoveTimeKeyframeNoKeyframe() {
+        impl.removeTimeKeyframe(0);
+    }
+
+    /**
+     * Checks all interpolators to make sure that they are continuous and not fragmented.
+     */
+    private void assertValidInterpolators(SPPath path, int expectedNumberOfInterpolators) {
+        String str = prettyPrintInterpolators(impl, path);
+        List<Interpolator> interpolators = impl.getPath(path).getSegments().stream().map(PathSegment::getInterpolator)
+                .distinct().collect(Collectors.toList());
+        assertFalse("Not all interpolators set: " + str, interpolators.contains(null));
+        assertEquals("Mismatched interpolator number: " + str, expectedNumberOfInterpolators, interpolators.size());
+        int i = 0;
+        for (Interpolator interpolator : interpolators) {
+            Keyframe lastKeyframe = null;
+            for (PathSegment segment : interpolator.getSegments().stream()
+                    .sorted(Comparator.comparing(s -> s.getStartKeyframe().getTime())).collect(Collectors.toList())) {
+                String message = "Fragmentation in interpolator " + i + ": " + str;
+                assertTrue(message, lastKeyframe == null || segment.getStartKeyframe() == lastKeyframe);
+                lastKeyframe = segment.getEndKeyframe();
+            }
+            i++;
+        }
+    }
+
+    @Test
+    public void testAddPositionKeyframeAppend() {
+        addPosition(0, 0);
+        addPosition(1, 1);
+        addPosition(2, 1);
+        addPosition(3, 1);
+        addPosition(4, 1);
+    }
+
+    @Test
+    public void testAddPositionKeyframePrepend() {
+        addPosition(4, 0);
+        addPosition(3, 1);
+        addPosition(2, 1);
+        addPosition(1, 1);
+        addPosition(0, 1);
+    }
+
+    @Test
+    public void testAddPositionKeyframeMixed() {
+        addPosition(2, 0);
+        addPosition(4, 1);
+        addPosition(3, 1);
+        addPosition(0, 1);
+        addPosition(1, 1);
+    }
+
+    @Test
+    public void testAddPositionSpectatorKeyframe() {
+        addPosition(0, 0);
+        addSpectator(1, 1);
+        addSpectator(2, 2);
+        addPosition(4, 3);
+        addPosition(7, 3);
+        addPosition(8, 3);
+        addSpectator(3, 3);
+        addSpectator(5, 3);
+        addSpectator(6, 5);
+    }
+
+    @Test
+    public void testRemovePositionKeyframeFromStart() {
+        addPosition(0, 0);
+        addPosition(1, 1);
+        addPosition(2, 1);
+        addPosition(3, 1);
+        removePosition(0, 1);
+        removePosition(1, 1);
+        removePosition(2, 0);
+        removePosition(3, 0);
+    }
+
+    @Test
+    public void testRemovePositionKeyframeFromEnd() {
+        addPosition(0, 0);
+        addPosition(1, 1);
+        addPosition(2, 1);
+        addPosition(3, 1);
+        removePosition(3, 1);
+        removePosition(2, 1);
+        removePosition(1, 0);
+        removePosition(0, 0);
+    }
+
+    @Test
+    public void testRemovePositionKeyframeFromMiddle() {
+        addPosition(0, 0);
+        addPosition(1, 1);
+        addPosition(2, 1);
+        addPosition(3, 1);
+        removePosition(1, 1);
+        removePosition(2, 1);
+        removePosition(0, 0);
+        removePosition(3, 0);
+    }
+
+    @Test
+    public void testRemovePositionSpectatorKeyframe() {
+        addPosition(0, 0);
+        addPosition(1, 1);
+        addPosition(2, 1);
+        addSpectator(3, 1);
+        addSpectator(4, 2);
+        addSpectator(5, 2);
+        addPosition(6, 3);
+        addPosition(7, 3);
+        addSpectator(8, 3);
+        addSpectator(9, 4);
+        removePosition(4, 4);
+        removePosition(9, 3);
+        removePosition(6, 3);
+        removePosition(7, 2);
+        removePosition(0, 2);
+        removePosition(1, 2);
+        removePosition(3, 2);
+        removePosition(2, 1);
+        removePosition(5, 0);
+        removePosition(8, 0);
+    }
+
+    @Test
+    public void testAddTimeKeyframeAppend() {
+        addTime(0, 0);
+        addTime(1, 1);
+        addTime(2, 1);
+        addTime(3, 1);
+        addTime(4, 1);
+    }
+
+    @Test
+    public void testAddTimeKeyframePrepend() {
+        addTime(4, 0);
+        addTime(3, 1);
+        addTime(2, 1);
+        addTime(1, 1);
+        addTime(0, 1);
+    }
+
+    @Test
+    public void testAddTimeKeyframeMixed() {
+        addTime(2, 0);
+        addTime(4, 1);
+        addTime(3, 1);
+        addTime(0, 1);
+        addTime(1, 1);
+    }
+
+    @Test
+    public void testRemoveTimeKeyframeFromStart() {
+        addTime(0, 0);
+        addTime(1, 1);
+        addTime(2, 1);
+        addTime(3, 1);
+        removeTime(0, 1);
+        removeTime(1, 1);
+        removeTime(2, 0);
+        removeTime(3, 0);
+    }
+
+    @Test
+    public void testRemoveTimeKeyframeFromEnd() {
+        addTime(0, 0);
+        addTime(1, 1);
+        addTime(2, 1);
+        addTime(3, 1);
+        removeTime(3, 1);
+        removeTime(2, 1);
+        removeTime(1, 0);
+        removeTime(0, 0);
+    }
+
+    @Test
+    public void testRemoveTimeKeyframeFromMiddle() {
+        addTime(0, 0);
+        addTime(1, 1);
+        addTime(2, 1);
+        addTime(3, 1);
+        removeTime(1, 1);
+        removeTime(2, 1);
+        removeTime(0, 0);
+        removeTime(3, 0);
+    }
+
+    @Test
+    public void testSetInterpolator() {
+        addPosition(0, 0);
+        addPosition(1, 1);
+        addPosition(2, 1);
+        setInterpolator(1, new LinearInterpolator(), 2);
+        assertIsLinear(1);
+        Interpolator interpolator = Iterables.get(impl.getPositionPath().getSegments(), 1).getInterpolator();
+        assertTrue(interpolator.getKeyframeProperties().contains(CameraProperties.POSITION));
+        assertTrue(interpolator.getKeyframeProperties().contains(CameraProperties.ROTATION));
+        addPosition(3, 3);
+        addPosition(4, 3);
+        addPosition(5, 3);
+        setInterpolator(3, new LinearInterpolator(), 5);
+        assertIsLinear(3);
+        removePosition(2, 3);
+        removePosition(3, 3);
+        removePosition(0, 2);
+        removePosition(1, 1);
+        removePosition(4, 0);
+        removePosition(5, 0);
+    }
+
+    private void assertIsLinear(int index) {
+        assertTrue("Expected segment " + index + " to have linear interpolator: " + prettyPrintInterpolators(impl, SPPath.POSITION),
+                Iterables.get(impl.getPositionPath().getSegments(), index).getInterpolator() instanceof LinearInterpolator);
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testSetInterpolatorNoKeyframe() {
+        addTime(0, 0);
+        impl.setInterpolator(0, new LinearInterpolator());
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testSetInterpolatorToDefaultNoKeyframe() {
+        addTime(0, 0);
+        impl.setInterpolatorToDefault(0);
+    }
+
+    @Test
+    public void testMoveKeyframe() {
+        addPosition(1, 0);
+        addPosition(3, 1);
+        addPosition(5, 1);
+        addPosition(7, 1);
+        addSpectator(9, 1);
+        addSpectator(11, 2);
+        addSpectator(13, 2);
+        addPosition(15, 3);
+        addPosition(17, 3);
+        addPosition(19, 3);
+        setInterpolator(3, new LinearInterpolator(), 5);
+        assertIsLinear(1);
+        setInterpolator(5, new LinearInterpolator(), 5);
+        assertIsLinear(2);
+        // [P 1] C0 [P 3] L1 [P 5] L1 [P 7] C2 [S 9] L3 [S 11] L3 [S 13] C4 [P 15] C4 [P 17] C4 [P 19]
+
+        impl.moveKeyframe(SPPath.POSITION, 5, 0);
+        assertValidInterpolators(SPPath.POSITION, 6);
+        assertIsLinear(0);
+        impl.moveKeyframe(SPPath.POSITION, 0, 5);
+        assertValidInterpolators(SPPath.POSITION, 5);
+        assertIsLinear(2);
+
+        impl.moveKeyframe(SPPath.POSITION, 3, 12);
+        assertValidInterpolators(SPPath.POSITION, 7);
+        assertIsLinear(5);
+        impl.moveKeyframe(SPPath.POSITION, 12, 3);
+        assertValidInterpolators(SPPath.POSITION, 5);
+        assertIsLinear(1);
+
+        impl.moveKeyframe(SPPath.POSITION, 7, 14);
+        assertValidInterpolators(SPPath.POSITION, 4);
+        impl.moveKeyframe(SPPath.POSITION, 14, 20);
+        assertValidInterpolators(SPPath.POSITION, 4);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testSetDefaultInterpolatorDifferentType() {
+        addPosition(0, 0);
+        addPosition(1, 1);
+        impl.setDefaultInterpolator(new CatmullRomSplineInterpolator(42));
+    }
+
+    @Test
+    public void testSetDefaultInterpolatorSameType() {
+        impl.setDefaultInterpolatorType(InterpolatorType.CATMULL_ROM);
+        addPosition(0, 0);
+        addSpectator(1, 1);
+        addSpectator(2, 2);
+        addPosition(3, 3);
+        addPosition(4, 3);
+        impl.setDefaultInterpolator(new CatmullRomSplineInterpolator(42));
+        assertValidInterpolators(SPPath.POSITION, 3);
+        assertIsCatmullRom(0, 42);
+        assertIsCatmullRom(2, 42);
+        assertIsCatmullRom(3, 42);
+    }
+
+    private void assertIsCatmullRom(int index, double alpha) {
+        String str = prettyPrintInterpolators(impl, SPPath.POSITION);
+        Interpolator interpolator = Iterables.get(impl.getPositionPath().getSegments(), index).getInterpolator();
+        assertTrue("Expected segment " + index + " to be catmull rom interpolator: " + str,
+                 interpolator instanceof CatmullRomSplineInterpolator);
+        assertTrue("Expected interpolator of segment segment " + index + " to have alpha " + alpha + ": " + str,
+                ((CatmullRomSplineInterpolator) interpolator).getAlpha() == 42);
+    }
+
+    private void addPosition(int time, int expectedNumberOfInterpolators) {
+        impl.addPositionKeyframe(time, 1, 2, 3, 4, 5, 6, -1);
+        assertNotNull(impl.getKeyframe(SPPath.POSITION, time));
+        assertValidInterpolators(SPPath.POSITION, expectedNumberOfInterpolators);
+    }
+
+    private void addSpectator(int time, int expectedNumberOfInterpolators) {
+        impl.addPositionKeyframe(time, 1, 2, 3, 4, 5, 6, 42);
+        assertNotNull(impl.getKeyframe(SPPath.POSITION, time));
+        assertTrue(impl.isSpectatorKeyframe(time));
+        assertValidInterpolators(SPPath.POSITION, expectedNumberOfInterpolators);
+    }
+
+    private void addTime(int time, int expectedNumberOfInterpolators) {
+        impl.addTimeKeyframe(time, 1);
+        assertNotNull(impl.getKeyframe(SPPath.TIME, time));
+        assertValidInterpolators(SPPath.TIME, expectedNumberOfInterpolators);
+    }
+
+    private void removePosition(int time, int expectedNumberOfInterpolators) {
+        impl.removePositionKeyframe(time);
+        assertNull(impl.getKeyframe(SPPath.POSITION, time));
+        assertValidInterpolators(SPPath.POSITION, expectedNumberOfInterpolators);
+    }
+
+    private void removeTime(int time, int expectedNumberOfInterpolators) {
+        impl.removeTimeKeyframe(time);
+        assertNull(impl.getKeyframe(SPPath.TIME, time));
+        assertValidInterpolators(SPPath.TIME, expectedNumberOfInterpolators);
+    }
+
+    private void setInterpolator(int time, Interpolator interpolator, int expectedNumberOfInterpolators) {
+        impl.setInterpolator(time, interpolator);
+        assertValidInterpolators(SPPath.POSITION, expectedNumberOfInterpolators);
+    }
+
+    private void assertPositionState(String expected) {
+        assertEquals(expected, prettyPrintInterpolators(impl, SPPath.POSITION));
+    }
+
+    // Tracks only entity 42 which always is at x=time*2, y,z=0
+    private class EntityPositionTrackerMock extends EntityPositionTracker {
+        public EntityPositionTrackerMock() {
+            super(null);
+        }
+
+        @Override
+        public Location getEntityPositionAtTimestamp(int entityID, long timestamp) {
+            if (entityID == 42) {
+                return new Location(timestamp * 2, 0 ,0, 0, 0);
+            } else {
+                return null;
+            }
+        }
+    }
+
+    public static String prettyPrintInterpolators(SPTimeline timeline, SPPath spPath) {
+        return prettyPrintInterpolators(timeline, spPath, Collections.emptyMap());
+    }
+
+    public static String prettyPrintInterpolators(SPTimeline timeline, SPPath spPath, Map<PathSegment, Interpolator> updates) {
+        Map<Interpolator, String> interpolatorIdMap = new IdentityHashMap<>();
+        Path path = timeline.getPath(spPath);
+        StringBuilder sb = new StringBuilder();
+        for (Keyframe keyframe : path.getKeyframes()) {
+            if (spPath == SPPath.TIME) {
+                sb.append("[T ").append(keyframe.getTime()).append("]");
+            } else if (keyframe.getValue(SpectatorProperty.PROPERTY).isPresent()) {
+                sb.append("[S ").append(keyframe.getTime()).append("]");
+            } else {
+                sb.append("[P ").append(keyframe.getTime()).append("]");
+            }
+            path.getSegments().stream().filter(s -> s.getStartKeyframe() == keyframe).findFirst().ifPresent(segment -> {
+                Interpolator interpolator = updates.getOrDefault(segment, segment.getInterpolator());
+                String id = interpolatorIdMap.computeIfAbsent(interpolator, i ->
+                        (i instanceof LinearInterpolator ? "L" : "C") + interpolatorIdMap.size());
+                sb.append(' ').append(id).append(' ');
+            });
+        }
+        return sb.toString();
+    }
+}