Fix integration test failing because of conflicting keybindings

This is done by preventing all calls to ChannelConfig.setAutoRead(false) during
the call to FMLNetworkHandler.fmlClientHandshake (the two @Redirects in
MixinNetworkDispatcher) and manually issuing the call before handleLoginSuccess
returns (at which point the NetHandlerPlayClient has been set).

This commit should be reverted once the issue mentioned above has been fixed.

.drone.yml

@@ -7,7 +7,6 @@ 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
-      - JAVA_OPTS=-Xmx1516M ./gradlew setupDecompWorkspace
       - ./gradlew :build
   archive:
     image: plugins/s3

.drone.yml.sig

@@ -1 +1 @@
-eyJhbGciOiJIUzI1NiJ9.cGlwZWxpbmU6CiAgY2xvbmU6CiAgICBpbWFnZTogcGx1Z2lucy9naXQKICAgIHRhZ3M6IHRydWUKICBidWlsZDoKICAgIGltYWdlOiBtYXZlbjozLjMuOS1qZGstOAogICAgY29tbWFuZHM6CiAgICAgIC0gY3VybCAtLWZhaWwgLS1jcmVhdGUtZGlycyAtbyAkSE9NRS8uZ3JhZGxlL2luaXQuZC9taXJyb3IuZ3JhZGxlIGh0dHBzOi8vbWF2ZW4uam9obmkwNzAyLmRlL2NvbmZpZy9ncmFkbGUKICAgICAgLSBjdXJsIC0tZmFpbCAtLWNyZWF0ZS1kaXJzIC1vICRIT01FLy5tMi9zZXR0aW5ncy54bWwgaHR0cHM6Ly9tYXZlbi5qb2huaTA3MDIuZGUvY29uZmlnL21hdmVuCiAgICAgIC0gSkFWQV9PUFRTPS1YbXgxNTE2TSAuL2dyYWRsZXcgc2V0dXBEZWNvbXBXb3Jrc3BhY2UKICAgICAgLSAuL2dyYWRsZXcgOmJ1aWxkCiAgYXJjaGl2ZToKICAgIGltYWdlOiBwbHVnaW5zL3MzCiAgICBhY2w6IHB1YmxpYy1yZWFkCiAgICByZWdpb246ICJ1cy1lYXN0LTEiCiAgICBidWNrZXQ6ICJyZXBsYXltb2QiCiAgICBwYXRoX3N0eWxlOiB0cnVlCiAgICBzb3VyY2U6IGJ1aWxkL2xpYnMvKgogICAgc3RyaXBfcHJlZml4OiBidWlsZC9saWJzLwogICAgdGFyZ2V0OiAvCg.nzPW0_TpMIjnFZZ5Ci439QDKlaDo1a3DCH-VCYUgpx8
+eyJhbGciOiJIUzI1NiJ9.cGlwZWxpbmU6CiAgY2xvbmU6CiAgICBpbWFnZTogcGx1Z2lucy9naXQKICAgIHRhZ3M6IHRydWUKICBidWlsZDoKICAgIGltYWdlOiBtYXZlbjozLjMuOS1qZGstOAogICAgY29tbWFuZHM6CiAgICAgIC0gY3VybCAtLWZhaWwgLS1jcmVhdGUtZGlycyAtbyAkSE9NRS8uZ3JhZGxlL2luaXQuZC9taXJyb3IuZ3JhZGxlIGh0dHBzOi8vbWF2ZW4uam9obmkwNzAyLmRlL2NvbmZpZy9ncmFkbGUKICAgICAgLSBjdXJsIC0tZmFpbCAtLWNyZWF0ZS1kaXJzIC1vICRIT01FLy5tMi9zZXR0aW5ncy54bWwgaHR0cHM6Ly9tYXZlbi5qb2huaTA3MDIuZGUvY29uZmlnL21hdmVuCiAgICAgIC0gLi9ncmFkbGV3IDpidWlsZAogIGFyY2hpdmU6CiAgICBpbWFnZTogcGx1Z2lucy9zMwogICAgYWNsOiBwdWJsaWMtcmVhZAogICAgcmVnaW9uOiAidXMtZWFzdC0xIgogICAgYnVja2V0OiAicmVwbGF5bW9kIgogICAgcGF0aF9zdHlsZTogdHJ1ZQogICAgc291cmNlOiBidWlsZC9saWJzLyoKICAgIHN0cmlwX3ByZWZpeDogYnVpbGQvbGlicy8KICAgIHRhcmdldDogLwo.Z6rpaLplJKQ4pzB8AjCnplgci42qEu7L4LeS0fGm4SY

.gitmodules

@@ -5,3 +5,7 @@
 [submodule "ReplayStudio"]
 	path = ReplayStudio
 	url = https://github.com/ReplayMod/ReplayStudio
+
+[submodule "src/main/resources/assets/replaymod/lang"]
+	path = src/main/resources/assets/replaymod/lang
+	url = https://github.com/ReplayMod/Translations

build.gradle

@@ -1,7 +1,5 @@
 import groovy.json.JsonOutput
 
-import java.util.zip.ZipInputStream
-
 buildscript {
     repositories {
         mavenCentral()
@@ -19,7 +17,7 @@ buildscript {
         }
     }
     dependencies {
-        classpath 'net.minecraftforge.gradle:ForgeGradle:2.2-SNAPSHOT'
+        classpath 'net.minecraftforge.gradle:ForgeGradle:2.3-SNAPSHOT'
         classpath 'org.spongepowered:mixingradle:0.4-SNAPSHOT'
     }
 }
@@ -36,9 +34,9 @@ archivesBaseName = "replaymod"
 
 minecraft {
     coreMod = 'com.replaymod.core.LoadingPlugin'
-    version = '1.11.2-13.20.0.2216'
+    version = '1.12-14.21.0.2327'
     runDir = "eclipse"
-    mappings = "snapshot_20161220"
+    mappings = "snapshot_20170615"
     replace '@MOD_VERSION@', project.version
     replace '@MC_VERSION@', project.minecraft.version
 }
@@ -48,9 +46,6 @@ repositories {
         name = "SpongePowered Repo"
         url = "http://repo.spongepowered.org/maven/"
     }
-    maven {
-        url 'https://repo.spacehq.org/content/repositories/snapshots/'
-    }
 }
 
 configurations {
@@ -61,7 +56,9 @@ configurations {
 dependencies {
     compile 'org.projectlombok:lombok:1.16.4'
 
-    compile 'org.spongepowered:mixin:0.6.4-SNAPSHOT'
+    compile('org.spongepowered:mixin:0.6.11-SNAPSHOT') {
+        exclude group: 'org.apache.logging.log4j'
+    }
     shade 'com.googlecode.mp4parser:isoparser:1.1.7'
     shade 'org.apache.commons:commons-exec:1.3'
     shade 'com.google.apis:google-api-services-youtube:v3-rev178-1.22.0'
@@ -103,27 +100,6 @@ jar {
     }
     from noticeDir
 
-    def langDir = file("$buildDir/languages")
-    doFirst {
-	try {
-        langDir.deleteDir()
-        langDir.mkdirs()
-        def dir = new File(langDir, 'assets/replaymod/lang/')
-        dir.mkdirs()
-        def zip = new ZipInputStream(new URL('http://replaymod.com/api/grab_languages').openStream())
-        def e;
-        while ((e = zip.nextEntry) != null) {
-            new File(dir, e.getName()) << zip
-            zip.closeEntry()
-        }
-	} catch(Exception e) {
-	    e.printStackTrace();
-	}
-    }
-    from (langDir) {
-        exclude '**/en_US.lang'
-    }
-
     from ({shade().collect { it.isDirectory() ? it : zipTree(it) }}) {
         exclude '**/NOTICE*'
         // exclude everything taken in from jGui for running the mod in a dev environment
@@ -189,6 +165,13 @@ sourceSets {
         }
         refMap = "mixins.replaymod.refmap.json"
     }
+    integrationTest {
+        compileClasspath += main.runtimeClasspath + main.output
+        java {
+            srcDir file('src/integration-test/java')
+        }
+        resources.srcDir file('src/integration-test/resources')
+    }
 }
 
 task copySrg(type: Copy, dependsOn: 'genSrgs') {
@@ -200,6 +183,81 @@ setupDecompWorkspace.dependsOn copySrg
 setupDevWorkspace.dependsOn copySrg
 project.tasks.idea.dependsOn copySrg
 
+
+import org.objectweb.asm.*
+
+import java.util.zip.ZipEntry
+import java.util.zip.ZipFile
+import java.util.zip.ZipOutputStream
+
+import static org.objectweb.asm.Opcodes.ASM5
+
+// MC binaries were complied with a java version that produces invalid class files under certain circumstances
+// This causes setupCIWorkspace to be insufficient for compiling.
+// Related JDK bug: https://bugs.openjdk.java.net/browse/JDK-8066725
+// As a workaround, to use setupCIWorkspace on Drone, we modify the bin jar in-place and remove all parameter annotations.
+// WARNING: This piece of code ignores any and all gradle conventions and will probably fail horribly when run outside
+// of a single-use environment (e.g. Drone). Use setupDecompWorkspace for normal use.
+tasks.deobfMcMCP.doLast {
+    println "Applying RuntimeInvisibleParameterAnnotations workaround..."
+    File jar = getOutJar()
+    File tmp = new File((File) getTemporaryDir(), "workaround.jar")
+    tmp.withOutputStream {
+        new ZipOutputStream(it).withStream { dst ->
+            new ZipFile(jar).withCloseable { src ->
+                src.entries().each {
+                    if (it.name.startsWith("net/minecraft/") && it.name.endsWith(".class")) {
+                        def cw = new ClassWriter(0)
+                        def cv = new ClassVisitor(ASM5, cw) {
+                            @Override
+                            MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
+                                return new MethodVisitor(ASM5, cv.visitMethod(access, name, desc, signature, exceptions)) {
+                                    @Override
+                                    AnnotationVisitor visitParameterAnnotation(int parameter, String pdesc, boolean visible) {
+                                        return null // Strip all parameter annotations
+                                    }
+                                }
+                            }
+                        }
+                        new ClassReader(src.getInputStream(it)).accept(cv, 0)
+                        dst.putNextEntry(new ZipEntry(it.name))
+                        dst.write(cw.toByteArray())
+                    } else {
+                        dst.putNextEntry(it)
+                        dst.write(src.getInputStream(it).bytes)
+                    }
+                }
+            }
+        }
+    }
+    jar.delete()
+    tmp.renameTo(jar)
+}
+
+task runIntegrationTest(type: JavaExec, dependsOn: ["makeStart", "jar"]) {
+    main = 'GradleStart'
+    standardOutput = System.out
+    errorOutput = System.err
+    workingDir file(minecraft.runDir)
+
+    def testDir = new File(minecraft.runDir, "integration-test")
+    doFirst {
+        testDir.deleteDir()
+        testDir.mkdirs()
+    }
+
+    doLast {
+        testDir.deleteDir()
+    }
+
+    afterEvaluate {
+        def runClient = tasks.getByName("runClient")
+        runIntegrationTest.jvmArgs = runClient.jvmArgs + "-Dfml.noGrab=true"
+        runIntegrationTest.args = runClient.args + "--gameDir" + testDir.canonicalPath
+        runIntegrationTest.classpath runClient.classpath + sourceSets.integrationTest.output
+    }
+}
+
 def generateVersionsJson() {
     // List all tags
     def stdout = new ByteArrayOutputStream()

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/integration-test/java/IntegrationTest.java

@@ -0,0 +1,30 @@
+import org.apache.commons.io.FileUtils;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Entry point for running integration tests from within the IDE.
+ * This is <b>not</b> called when running integration tests directly from gradle.
+ */
+public class IntegrationTest {
+    public static void main(String[] args) throws Throwable {
+        // Prevent MC from grabbing our mouse during the test (it's not needed)
+        System.setProperty("fml.noGrab", "true");
+
+        // Make sure the test folder exists and is fresh
+        File gameDir = new File(System.getProperty("user.dir"), "integration-test");
+        if (gameDir.exists()) {
+            FileUtils.forceDelete(gameDir);
+        }
+        FileUtils.forceMkdir(gameDir);
+
+        // Set game dir to test folder and call regular entry point
+        List<String> argsList = new ArrayList<>(Arrays.asList(args));
+        argsList.add("--gameDir");
+        argsList.add(gameDir.getCanonicalPath());
+        GradleStart.main(argsList.toArray(new String[argsList.size()]));
+    }
+}

src/integration-test/java/com/replaymod/core/AbstractTask.java

@@ -0,0 +1,340 @@
+package com.replaymod.core;
+
+import com.google.common.collect.Iterables;
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.SettableFuture;
+import de.johni0702.minecraft.gui.container.AbstractGuiOverlay;
+import de.johni0702.minecraft.gui.container.AbstractGuiScreen;
+import de.johni0702.minecraft.gui.container.GuiContainer;
+import de.johni0702.minecraft.gui.container.GuiOverlay;
+import de.johni0702.minecraft.gui.container.GuiScreen;
+import de.johni0702.minecraft.gui.element.GuiButton;
+import de.johni0702.minecraft.gui.element.GuiElement;
+import de.johni0702.minecraft.gui.element.GuiTexturedButton;
+import de.johni0702.minecraft.gui.popup.AbstractGuiPopup;
+import de.johni0702.minecraft.gui.utils.Consumer;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.settings.KeyBinding;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.common.gameevent.TickEvent;
+import org.lwjgl.input.Keyboard;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.concurrent.TimeoutException;
+
+import static com.replaymod.core.ReplayModIntegrationTest.LOGGER;
+import static com.replaymod.core.utils.Utils.addCallback;
+
+public abstract class AbstractTask implements Task {
+    public static Task create(Consumer<AbstractTask> init) {
+        return new AbstractTask() {
+            @Override
+            protected void init() {
+                init.consume(this);
+            }
+        };
+    }
+
+    public static final Minecraft mc = Minecraft.getMinecraft();
+    public final ReplayMod core = ReplayMod.instance;
+    public SettableFuture<Void> future;
+
+    @Override
+    public ListenableFuture<Void> execute() {
+        future = SettableFuture.create();
+
+        MinecraftForge.EVENT_BUS.register(this);
+        addCallback(future, success -> {
+            MinecraftForge.EVENT_BUS.unregister(this);
+        }, error -> {});
+
+        init();
+
+        return future;
+    }
+
+    protected void init() {}
+
+    protected void runLater(Runnable runnable) {
+        core.runLater(() -> {
+            try {
+                runnable.run();
+            } catch (Throwable t) {
+                future.setException(t);
+            }
+        });
+    }
+
+    public void expectGuiClosed(Runnable onClosed) {
+        expectGuiClosed0(10, onClosed);
+    }
+
+    public void expectGuiClosed(int timeout, Runnable onClosed) {
+        expectGuiClosed0(timeout, onClosed);
+    }
+
+    private void expectGuiClosed0(int timeout, Runnable onClosed) {
+        StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
+        class EventHandler {
+            final net.minecraft.client.gui.GuiScreen currentScreen = mc.currentScreen;
+            int framesPassed;
+
+            @SubscribeEvent
+            public void onGuiOpen(TickEvent.RenderTickEvent event) {
+                if (event.phase != TickEvent.Phase.START) return;
+                if (currentScreen != mc.currentScreen) {
+                    MinecraftForge.EVENT_BUS.unregister(this);
+                    onClosed.run();
+                } else {
+                    if (framesPassed < timeout) {
+                        framesPassed++;
+                    } else {
+                        Object gui = (gui = GuiScreen.from(currentScreen)) == null ? currentScreen : gui;
+                        Exception e = new TimeoutException("Timeout while waiting for " + gui + " to be closed.");
+                        e.setStackTrace(Arrays.copyOfRange(stackTrace, 3, stackTrace.length));
+                        future.setException(e);
+                    }
+                }
+            }
+        }
+        MinecraftForge.EVENT_BUS.register(new EventHandler());
+    }
+
+    public void expectPopupClosed(Runnable onClosed) {
+        expectPopupClosed0(10, onClosed);
+    }
+
+    public void expectPopupClosed(int timeout, Runnable onClosed) {
+        expectPopupClosed0(timeout, onClosed);
+    }
+
+    private void expectPopupClosed0(int timeout, Runnable onClosed) {
+        StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
+        AbstractGuiPopup popup = getPopup(mc.currentScreen);
+        if (popup == null) {
+            throw new IllegalStateException("No popup found.");
+        }
+        class EventHandler {
+            int framesPassed;
+
+            @SubscribeEvent
+            public void onGuiOpen(TickEvent.RenderTickEvent event) {
+                if (event.phase != TickEvent.Phase.START) return;
+                if (getPopup(mc.currentScreen) != popup) {
+                    MinecraftForge.EVENT_BUS.unregister(this);
+                    onClosed.run();
+                } else {
+                    if (framesPassed < timeout) {
+                        framesPassed++;
+                    } else {
+                        Exception e = new TimeoutException("Timeout while waiting for " + popup + " to be closed.");
+                        e.setStackTrace(Arrays.copyOfRange(stackTrace, 3, stackTrace.length));
+                        future.setException(e);
+                    }
+                }
+            }
+        }
+        MinecraftForge.EVENT_BUS.register(new EventHandler());
+    }
+
+    private AbstractGuiPopup getPopup(net.minecraft.client.gui.GuiScreen minecraft) {
+        GuiContainer<?> container = GuiOverlay.from(minecraft);
+        if (container == null) {
+            container = GuiScreen.from(minecraft);
+        }
+        if (container != null) {
+            while (container.getContainer() != null) {
+                container = container.getContainer();
+            }
+            GuiElement popup = Iterables.getLast(container.getChildren());
+            if (popup instanceof AbstractGuiPopup) {
+                return (AbstractGuiPopup) popup;
+            }
+        }
+        return null;
+    }
+
+    public <T> void expectGui(Class<T> guiClass, Consumer<T> onOpen) {
+        StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
+        class EventHandler {
+            net.minecraft.client.gui.GuiScreen currentScreen;
+            int framesPassed;
+
+            @SubscribeEvent
+            public void onGuiOpen(TickEvent.RenderTickEvent event) {
+                if (event.phase != TickEvent.Phase.START) return;
+                if (currentScreen != mc.currentScreen) {
+                    currentScreen = mc.currentScreen;
+                    framesPassed = 0;
+                }
+                if (framesPassed < 10) {
+                    framesPassed++;
+                    return;
+                }
+
+                MinecraftForge.EVENT_BUS.unregister(this);
+
+                Object foundGui = null;
+                if (AbstractGuiScreen.class.isAssignableFrom(guiClass)) {
+                    AbstractGuiScreen guiScreen = GuiScreen.from(currentScreen);
+                    if (guiClass.isInstance(guiScreen)) {
+                        onOpen.consume(guiClass.cast(guiScreen));
+                        return;
+                    }
+                    foundGui = guiScreen;
+                } else if (AbstractGuiOverlay.class.isAssignableFrom(guiClass)) {
+                    AbstractGuiOverlay guiScreen = GuiOverlay.from(currentScreen);
+                    if (guiClass.isInstance(guiScreen)) {
+                        onOpen.consume(guiClass.cast(guiScreen));
+                        return;
+                    }
+                    foundGui = guiScreen;
+                } else if (AbstractGuiPopup.class.isAssignableFrom(guiClass)) {
+                    AbstractGuiPopup popup = getPopup(currentScreen);
+                    if (guiClass.isInstance(popup)) {
+                        onOpen.consume(guiClass.cast(popup));
+                        return;
+                    }
+                } else {
+                    if (guiClass.isInstance(currentScreen)) {
+                        onOpen.consume(guiClass.cast(currentScreen));
+                        return;
+                    }
+                }
+                class UnexpectedGuiException extends Exception {
+                    UnexpectedGuiException(Object foundGui) {
+                        super("Expected instance of " + guiClass + " but found " + foundGui);
+                        setStackTrace(Arrays.copyOfRange(stackTrace, 2, stackTrace.length));
+                    }
+                }
+                future.setException(new UnexpectedGuiException(foundGui == null ? currentScreen : foundGui));
+            }
+        }
+        MinecraftForge.EVENT_BUS.register(new EventHandler());
+    }
+
+    private void clickNow(int x, int y) {
+        try {
+            Method method = net.minecraft.client.gui.GuiScreen.class
+                    .getDeclaredMethod("mouseClicked", int.class, int.class, int.class);
+            method.setAccessible(true);
+            method.invoke(mc.currentScreen, x, y, 0);
+        } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) {
+            future.setException(e);
+        }
+    }
+
+    public void click(int x, int y) {
+        runLater(() -> {
+            LOGGER.info("Clicking at {}/{}", x, y);
+            clickNow(x, y);
+        });
+    }
+
+    private void dragNow(int x, int y) {
+        try {
+            Method method = net.minecraft.client.gui.GuiScreen.class
+                    .getDeclaredMethod("mouseClickMove", int.class, int.class, int.class, long.class);
+            method.setAccessible(true);
+            method.invoke(mc.currentScreen, x, y, 0, 0);
+        } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) {
+            future.setException(e);
+        }
+    }
+
+    public void drag(int x, int y) {
+        runLater(() -> {
+            LOGGER.info("Dragging to {}/{}", x, y);
+            dragNow(x, y);
+        });
+    }
+
+    public void click(GuiButton button) {
+        runLater(() -> {
+            if (!button.isEnabled()) {
+                future.setException(new IllegalStateException("Button is disabled: " + button.getLabel()));
+                return;
+            }
+            LOGGER.info("Clicking button {}", button.getLabel());
+            button.onClick();
+        });
+    }
+
+    public void click(GuiTexturedButton button) {
+        runLater(() -> {
+            if (!button.isEnabled()) {
+                future.setException(new IllegalStateException("Button is disabled: " + button.getTexture()));
+                return;
+            }
+            LOGGER.info("Clicking textured button {}", button.getTexture());
+            button.onClick();
+        });
+    }
+
+    public void click(String buttonText) {
+        runLater(() -> {
+            LOGGER.info("Clicking button {}", buttonText);
+            try {
+                Field field = net.minecraft.client.gui.GuiScreen.class.getDeclaredField("buttonList");
+                field.setAccessible(true);
+                @SuppressWarnings("unchecked")
+                List<net.minecraft.client.gui.GuiButton> buttonList = (List)
+                        field.get(mc.currentScreen);
+
+                net.minecraft.client.gui.GuiButton button = null;
+                for (net.minecraft.client.gui.GuiButton guiButton : buttonList) {
+                    if (guiButton.displayString.equals(buttonText)) {
+                        button = guiButton;
+                    }
+                }
+                if (button == null) {
+                    future.setException(new NoSuchElementException("No button with label: " + buttonText));
+                    return;
+                }
+
+                clickNow(button.x + 5, button.y + 5);
+            } catch (IllegalAccessException | NoSuchFieldException e) {
+                future.setException(e);
+            }
+        });
+    }
+
+    public void type(String string) {
+        for (char c : string.toCharArray()) {
+            press(c, Keyboard.getKeyIndex(String.valueOf(c).toUpperCase()));
+        }
+    }
+
+    public void press(int keyCode) {
+        String keyName = Keyboard.getKeyName(keyCode);
+        char character = keyName.length() == 1 ? keyName.charAt(0) : '\0';
+        press(character, keyCode);
+    }
+
+    public void press(char character, int keyCode) {
+        runLater(() -> {
+            LOGGER.info("Pressing key {}", Keyboard.getKeyName(keyCode));
+            if (mc.currentScreen == null || mc.currentScreen.allowUserInput) {
+                KeyBinding.onTick(keyCode);
+                FMLCommonHandler.instance().fireKeyInput();
+            }
+            if (mc.currentScreen != null) {
+                try {
+                    Method method = net.minecraft.client.gui.GuiScreen.class
+                            .getDeclaredMethod("keyTyped", char.class, int.class);
+                    method.setAccessible(true);
+                    method.invoke(mc.currentScreen, character, keyCode);
+                } catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e) {
+                    future.setException(e);
+                }
+            }
+        });
+    }
+}

src/integration-test/java/com/replaymod/core/CompositeTask.java

@@ -0,0 +1,41 @@
+package com.replaymod.core;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.SettableFuture;
+
+import static com.replaymod.core.ReplayModIntegrationTest.LOGGER;
+import static com.replaymod.core.utils.Utils.addCallback;
+
+public class CompositeTask implements Task {
+    private SettableFuture<Void> future;
+    protected final Task[] children;
+
+    public CompositeTask(Task[] children) {
+        this.children = children;
+    }
+
+    @Override
+    public ListenableFuture<Void> execute() {
+        future = SettableFuture.create();
+        executeChild(0);
+        return future;
+    }
+
+    private void executeChild(int childIndex) {
+        if (future.isDone()) return;
+        if (childIndex < children.length) {
+            ReplayMod.instance.runLater(() -> {
+                try {
+                    Task task = children[childIndex];
+                    LOGGER.info("Running task {}", task);
+                    ListenableFuture<Void> childFuture = task.execute();
+                    addCallback(childFuture, done -> executeChild(childIndex + 1), err -> future.setException(err));
+                } catch (Throwable t) {
+                    future.setException(t);
+                }
+            });
+        } else {
+            future.set(null);
+        }
+    }
+}

src/integration-test/java/com/replaymod/core/ReplayModIntegrationTest.java

@@ -0,0 +1,78 @@
+package com.replaymod.core;
+
+import com.replaymod.core.regression.RegressionTest60;
+import com.replaymod.core.regression.RegressionTest61;
+import com.replaymod.core.regression.RegressionTest62;
+import com.replaymod.extra.DownloadOpenEye;
+import com.replaymod.online.SkipLogin;
+import com.replaymod.recording.CreateSPWorld;
+import com.replaymod.recording.ExitSPWorld;
+import com.replaymod.replay.ExitReplay;
+import com.replaymod.replay.LoadReplay;
+import com.replaymod.replay.OpenReplayViewer;
+import net.minecraft.client.Minecraft;
+import net.minecraftforge.fml.common.FMLCommonHandler;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.event.FMLPreInitializationEvent;
+import org.apache.logging.log4j.Logger;
+
+import static com.replaymod.core.AbstractTask.mc;
+import static com.replaymod.core.ReplayModIntegrationTest.MOD_ID;
+import static com.replaymod.core.utils.Utils.addCallback;
+
+/**
+ * Helper mod that initiates the integration tests.
+ */
+@Mod(modid = MOD_ID)
+public class ReplayModIntegrationTest {
+    public static final String MOD_ID = "replaymod-integration-test";
+
+    public static Logger LOGGER;
+
+    @Mod.EventHandler
+    public void init(FMLPreInitializationEvent event) {
+        LOGGER = event.getModLog();
+
+        // Make sure the game window doesn't have to remain in focus during the test
+        mc.gameSettings.pauseOnLostFocus = false;
+
+        // Vanilla uses our keys
+        mc.gameSettings.keyBindAdvancements.setKeyCode(0);
+        mc.gameSettings.keyBindLoadToolbar.setKeyCode(0);
+        mc.gameSettings.keyBindSaveToolbar.setKeyCode(0);
+
+        runTasks(
+                new SkipLogin(),
+                new DownloadOpenEye(),
+                new CreateSPWorld(),
+                new Wait(5000),
+                new ExitSPWorld(),
+                new OpenReplayViewer(),
+                new LoadReplay(),
+
+                new RegressionTest60(),
+                new RegressionTest61(),
+                new RegressionTest62(),
+
+                // new AbstractTask() {}, // Uncomment to not exit on success (useful for writing more tests)
+                new ExitReplay()
+        );
+    }
+
+    private void runTasks(Task... tests) {
+        addCallback(new CompositeTask(tests).execute(), success -> {
+            if (!Minecraft.getMinecraft().hasCrashed) {
+                LOGGER.info("===================================================");
+                LOGGER.info("=                 ALL TESTS PASSED                =");
+                LOGGER.info("===================================================");
+                FMLCommonHandler.instance().exitJava(0, false);
+            }
+        }, error -> {
+            LOGGER.error("Failed task:", error);
+            LOGGER.error("===================================================");
+            LOGGER.error("=                  TEST FAILED                    =");
+            LOGGER.error("===================================================");
+            FMLCommonHandler.instance().exitJava(1, false);
+        });
+    }
+}

src/integration-test/java/com/replaymod/core/Task.java

@@ -0,0 +1,35 @@
+package com.replaymod.core;
+
+import com.google.common.util.concurrent.ListenableFuture;
+
+public interface Task {
+    ListenableFuture<Void> execute();
+
+    static Task click(int x, int y) {
+        return AbstractTask.create(task -> {
+            task.click(x, y);
+            task.runLater(() -> task.future.set(null));
+        });
+    }
+
+    static Task drag(int x, int y) {
+        return AbstractTask.create(task -> {
+            task.drag(x, y);
+            task.runLater(() -> task.future.set(null));
+        });
+    }
+
+    static Task pressKey(int keyCode) {
+        return AbstractTask.create(task -> {
+            task.press(keyCode);
+            task.runLater(() -> task.future.set(null));
+        });
+    }
+
+    static Task pressKey(char character, int keyCode) {
+        return AbstractTask.create(task -> {
+            task.press(character, keyCode);
+            task.runLater(() -> task.future.set(null));
+        });
+    }
+}

src/integration-test/java/com/replaymod/core/Utils.java

@@ -0,0 +1,9 @@
+package com.replaymod.core;
+
+public class Utils {
+    public static void times(int x, Runnable runnable) {
+        for (int i = 0; i < x; i++) {
+            runnable.run();
+        }
+    }
+}

src/integration-test/java/com/replaymod/core/Wait.java

@@ -0,0 +1,21 @@
+package com.replaymod.core;
+
+public class Wait extends AbstractTask {
+    private final int duration;
+
+    public Wait(int duration) {
+        this.duration = duration;
+    }
+
+    @Override
+    protected void init() {
+        new Thread(() -> {
+            try {
+                Thread.sleep(duration);
+                runLater(() -> future.set(null));
+            } catch (InterruptedException e) {
+                runLater(() -> future.setException(e));
+            }
+        }).start();
+    }
+}

src/integration-test/java/com/replaymod/core/regression/RegressionTest60.java

@@ -0,0 +1,59 @@
+package com.replaymod.core.regression;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.core.CompositeTask;
+import com.replaymod.core.Task;
+import com.replaymod.replay.SpectatePlayer;
+import com.replaymod.replay.overlay.OverlayGui;
+import com.replaymod.simplepathing.GuiPathingTasks;
+import com.replaymod.simplepathing.gui.GuiEditKeyframe;
+import org.lwjgl.input.Keyboard;
+
+import static com.replaymod.core.AbstractTask.mc;
+import static com.replaymod.core.Utils.times;
+
+/**
+ * Regression test: #60 Crash in path preview when two spectator keyframes are closer than 50ms
+ */
+public class RegressionTest60 extends CompositeTask {
+    public RegressionTest60() {
+        super(new Task[]{
+                new SpectatePlayer(),
+                OverlayGui.whileOpened(
+                        // Place first spectator keyframe
+                        new GuiPathingTasks.ClickPositionKeyframeButton(),
+                        // Place second spectator keyframe
+                        Task.click(130, 50),
+                        new GuiPathingTasks.ClickPositionKeyframeButton(),
+                        // Move second keyframe to 20ms on the keyframe timeline
+                        AbstractTask.create(task -> {
+                            // Double click keyframe
+                            task.click(130, 50);
+                            task.click(130, 50);
+                            task.expectGui(GuiEditKeyframe.Spectator.class, gui -> {
+                                // Set ms field to 20
+                                task.click(mc.currentScreen.width / 2 + 80, mc.currentScreen.height / 2);
+                                times(4, () -> task.press(Keyboard.KEY_BACK));
+                                task.type("20");
+                                // Set other fields to 0
+                                times(2, () -> {
+                                    task.press(Keyboard.KEY_TAB);
+                                    times(4, () -> task.press(Keyboard.KEY_BACK));
+                                    task.press(Keyboard.KEY_0);
+                                });
+                                task.click(gui.saveButton);
+                                task.expectPopupClosed(() -> task.future.set(null));
+                            });
+                        }),
+                        // Place second spectator keyframe
+                        new GuiPathingTasks.ClickPositionKeyframeButton()
+                ),
+                // Stop spectating player
+                new SpectatePlayer.End(),
+                // Enable path preview
+                Task.pressKey(Keyboard.KEY_H),
+                new GuiPathingTasks.ClearKeyframeTimeline(),
+                Task.pressKey(Keyboard.KEY_H),
+        });
+    }
+}

src/integration-test/java/com/replaymod/core/regression/RegressionTest61.java

@@ -0,0 +1,35 @@
+package com.replaymod.core.regression;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.core.CompositeTask;
+import com.replaymod.core.Task;
+import com.replaymod.replay.overlay.OverlayGui;
+import com.replaymod.simplepathing.GuiPathingTasks;
+import com.replaymod.simplepathing.gui.GuiEditKeyframe;
+
+/**
+ * Regression test: #61 NPE when saving in edit keyframe gui of last keyframe
+ */
+public class RegressionTest61 extends CompositeTask {
+    public RegressionTest61() {
+        super(new Task[]{
+                OverlayGui.whileOpened(
+                        // Place keyframe
+                        Task.click(130, 50),
+                        new GuiPathingTasks.ClickPositionKeyframeButton(),
+                        AbstractTask.create(task -> {
+                            // Double click keyframe
+                            task.click(130, 50);
+                            task.click(130, 50);
+                            task.expectGui(GuiEditKeyframe.Position.class, gui -> {
+                                task.click(gui.saveButton);
+                                task.expectPopupClosed(() -> task.future.set(null));
+                            });
+                        }),
+                        // Place second spectator keyframe
+                        new GuiPathingTasks.ClickPositionKeyframeButton()
+                ),
+                new GuiPathingTasks.ClearKeyframeTimeline(),
+        });
+    }
+}

src/integration-test/java/com/replaymod/core/regression/RegressionTest62.java

@@ -0,0 +1,28 @@
+package com.replaymod.core.regression;
+
+import com.replaymod.core.CompositeTask;
+import com.replaymod.core.Task;
+import com.replaymod.replay.overlay.OverlayGui;
+import com.replaymod.simplepathing.GuiPathingTasks;
+
+/**
+ * Regression test: #62 Swapping the only two existing keyframes causes NPE
+ */
+public class RegressionTest62 extends CompositeTask {
+    public RegressionTest62() {
+        super(new Task[]{
+                OverlayGui.whileOpened(
+                        // Place first keyframe
+                        Task.click(130, 50),
+                        new GuiPathingTasks.ClickPositionKeyframeButton(),
+                        // Place second keyframe
+                        Task.click(150, 50),
+                        new GuiPathingTasks.ClickPositionKeyframeButton(),
+                        // Move first keyframe past second keyframe
+                        Task.click(130,50),
+                        Task.drag(170,50)
+                ),
+                new GuiPathingTasks.ClearKeyframeTimeline()
+        });
+    }
+}

src/integration-test/java/com/replaymod/extra/DownloadOpenEye.java

@@ -0,0 +1,29 @@
+package com.replaymod.extra;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.extras.OpenEyeExtra;
+import net.minecraftforge.fml.common.Loader;
+
+import java.io.File;
+import java.nio.file.NoSuchFileException;
+
+public class DownloadOpenEye extends AbstractTask {
+    @Override
+    protected void init() {
+        if ("1".equals(System.getenv("RM_INTEGRATION_TEST_NO_OPENEYE"))) {
+            runLater(() -> future.set(null));
+            return;
+        }
+        expectGui(OpenEyeExtra.OfferGui.class, offerGui -> {
+            click(offerGui.yesButton);
+            expectGuiClosed(20 * 1000, () -> {
+                File targetFile = new File(mc.mcDataDir, "mods/" + Loader.MC_VERSION + "/OpenEye.jar");
+                if (!targetFile.exists()) {
+                    future.setException(new NoSuchFileException(targetFile.getAbsolutePath()));
+                } else {
+                    future.set(null);
+                }
+            });
+        });
+    }
+}

src/integration-test/java/com/replaymod/online/SkipLogin.java

@@ -0,0 +1,14 @@
+package com.replaymod.online;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.online.gui.GuiLoginPrompt;
+
+public class SkipLogin extends AbstractTask {
+    @Override
+    protected void init() {
+        expectGui(GuiLoginPrompt.class, gui -> {
+            click(gui.cancelButton);
+            expectGuiClosed(() -> future.set(null));
+        });
+    }
+}

src/integration-test/java/com/replaymod/recording/CreateSPWorld.java

@@ -0,0 +1,32 @@
+package com.replaymod.recording;
+
+import com.replaymod.core.AbstractTask;
+import net.minecraft.client.gui.GuiCreateWorld;
+import net.minecraft.client.gui.GuiMainMenu;
+import net.minecraft.client.gui.GuiWorldSelection;
+import net.minecraftforge.client.event.RenderGameOverlayEvent;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+
+public class CreateSPWorld extends AbstractTask {
+    @Override
+    protected void init() {
+        expectGui(GuiMainMenu.class, mainMenu -> {
+            click("Singleplayer");
+            expectGui(GuiWorldSelection.class, selectWorld -> {
+                click("Create New World");
+                expectGui(GuiCreateWorld.class, createWorld -> {
+                    click("Create New World");
+                    class EventHandler {
+                        @SubscribeEvent
+                        public void onRenderIngame(RenderGameOverlayEvent.Pre event) {
+                            MinecraftForge.EVENT_BUS.unregister(this);
+                            runLater(() -> future.set(null));
+                        }
+                    }
+                    MinecraftForge.EVENT_BUS.register(new EventHandler());
+                });
+            });
+        });
+    }
+}

src/integration-test/java/com/replaymod/recording/ExitSPWorld.java

@@ -0,0 +1,36 @@
+package com.replaymod.recording;
+
+import com.replaymod.core.AbstractTask;
+import net.minecraft.client.gui.GuiIngameMenu;
+import net.minecraft.client.gui.GuiMainMenu;
+import org.apache.commons.io.filefilter.DirectoryFileFilter;
+
+import java.io.IOException;
+
+public class ExitSPWorld extends AbstractTask {
+    @Override
+    protected void init() {
+        mc.displayInGameMenu();
+        expectGui(GuiIngameMenu.class, ingameMenu -> {
+            click("Save and Quit to Title");
+            expectGui(GuiMainMenu.class, mainMenu -> new Thread(() -> {
+                try {
+                    while (true) {
+                        String[] dirs = core.getReplayFolder().list(DirectoryFileFilter.DIRECTORY);
+                        if (dirs == null) {
+                            future.setException(new NullPointerException("dirs is null"));
+                            return;
+                        }
+                        if (dirs.length == 0) {
+                            runLater(() -> future.set(null));
+                            return;
+                        }
+                        Thread.sleep(10);
+                    }
+                } catch (IOException | InterruptedException e) {
+                    future.setException(e);
+                }
+            }).start());
+        });
+    }
+}

src/integration-test/java/com/replaymod/replay/ExitReplay.java

@@ -0,0 +1,16 @@
+package com.replaymod.replay;
+
+import com.replaymod.core.AbstractTask;
+import net.minecraft.client.gui.GuiIngameMenu;
+import net.minecraft.client.gui.GuiMainMenu;
+
+public class ExitReplay extends AbstractTask {
+    @Override
+    protected void init() {
+        mc.displayInGameMenu();
+        expectGui(GuiIngameMenu.class, ingameMenu -> {
+            click("Exit Replay");
+            expectGui(GuiMainMenu.class, mainMenu -> future.set(null));
+        });
+    }
+}

src/integration-test/java/com/replaymod/replay/LoadReplay.java

@@ -0,0 +1,32 @@
+package com.replaymod.replay;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.replay.gui.screen.GuiReplayViewer;
+import de.johni0702.minecraft.gui.function.Clickable;
+import net.minecraftforge.client.event.RenderGameOverlayEvent;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import org.lwjgl.util.Point;
+import org.lwjgl.util.ReadableDimension;
+
+public class LoadReplay extends AbstractTask {
+    @Override
+    protected void init() {
+        expectGui(GuiReplayViewer.class, replayViewer -> runLater(() -> {
+            ReadableDimension size = replayViewer.getMaxSize();
+            // Select first entry
+            replayViewer.forEach(Clickable.class).mouseClick(new Point(size.getWidth() / 2, 40), 0);
+            // Load first replay
+            click(replayViewer.loadButton);
+
+            class EventHandler {
+                @SubscribeEvent
+                public void onRenderIngame(RenderGameOverlayEvent.Pre event) {
+                    MinecraftForge.EVENT_BUS.unregister(this);
+                    runLater(() -> future.set(null));
+                }
+            }
+            MinecraftForge.EVENT_BUS.register(new EventHandler());
+        }));
+    }
+}

src/integration-test/java/com/replaymod/replay/OpenReplayViewer.java

@@ -0,0 +1,15 @@
+package com.replaymod.replay;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.replay.gui.screen.GuiReplayViewer;
+import net.minecraft.client.gui.GuiMainMenu;
+
+public class OpenReplayViewer extends AbstractTask {
+    @Override
+    protected void init() {
+        expectGui(GuiMainMenu.class, mainMenu -> {
+            click("Replay Viewer");
+            expectGui(GuiReplayViewer.class, replayViewer -> future.set(null));
+        });
+    }
+}

src/integration-test/java/com/replaymod/replay/SpectatePlayer.java

@@ -0,0 +1,42 @@
+package com.replaymod.replay;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.extras.playeroverview.PlayerOverviewGui;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.common.gameevent.TickEvent;
+import org.lwjgl.input.Keyboard;
+
+import java.util.concurrent.TimeoutException;
+
+public class SpectatePlayer extends AbstractTask {
+    @Override
+    protected void init() {
+        press(Keyboard.KEY_B);
+        expectGui(PlayerOverviewGui.class, overview -> {
+            click(overview.getMaxSize().getWidth() / 2 - 60, 60);
+            press(Keyboard.KEY_ESCAPE);
+            expectGuiClosed(() -> future.set(null));
+        });
+    }
+
+    public static class End extends AbstractTask {
+        private int timeout;
+
+        @Override
+        protected void init() {
+            runLater(() -> press(Keyboard.KEY_LSHIFT));
+        }
+
+        @SubscribeEvent
+        public void onTick(TickEvent.RenderTickEvent event) {
+            if (event.phase != TickEvent.Phase.START) return;
+            if (timeout++ > 20) {
+                future.setException(new TimeoutException("Camera hasn't stopped spectating."));
+                return;
+            }
+            if (mc.getRenderViewEntity() == mc.player) {
+                future.set(null);
+            }
+        }
+    }
+}

src/integration-test/java/com/replaymod/replay/overlay/OverlayGui.java

@@ -0,0 +1,33 @@
+package com.replaymod.replay.overlay;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.core.CompositeTask;
+import com.replaymod.core.Task;
+import com.replaymod.replay.gui.overlay.GuiReplayOverlay;
+import org.lwjgl.input.Keyboard;
+
+public class OverlayGui {
+    public static Task whileOpened(Task...tasks) {
+        Task[] nTasks = new Task[tasks.length + 2];
+        System.arraycopy(tasks, 0, nTasks, 1, tasks.length);
+        nTasks[0] = new Open();
+        nTasks[tasks.length + 1] = new Close();
+        return new CompositeTask(nTasks);
+    }
+
+    public static class Open extends AbstractTask {
+        @Override
+        protected void init() {
+            press(Keyboard.KEY_T);
+            expectGui(GuiReplayOverlay.class, done -> future.set(null));
+        }
+    }
+
+    public static class Close extends AbstractTask {
+        @Override
+        protected void init() {
+            press(Keyboard.KEY_ESCAPE);
+            expectGuiClosed(() -> future.set(null));
+        }
+    }
+}

src/integration-test/java/com/replaymod/simplepathing/GuiPathingTasks.java

@@ -0,0 +1,35 @@
+package com.replaymod.simplepathing;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.replay.gui.overlay.GuiReplayOverlay;
+import com.replaymod.simplepathing.gui.GuiPathing;
+import de.johni0702.minecraft.gui.popup.GuiYesNoPopup;
+import org.lwjgl.input.Keyboard;
+
+public abstract class GuiPathingTasks extends AbstractTask {
+    @Override
+    protected void init() {
+        expectGui(GuiReplayOverlay.class, ign -> init0(ReplayModSimplePathing.instance.getGuiPathing()));
+    }
+
+    protected abstract void init0(GuiPathing guiPathing);
+
+    public static class ClickPositionKeyframeButton extends GuiPathingTasks {
+        @Override
+        protected void init0(GuiPathing guiPathing) {
+            click(guiPathing.positionKeyframeButton);
+            runLater(() -> future.set(null));
+        }
+    }
+
+    public static class ClearKeyframeTimeline extends AbstractTask {
+        @Override
+        protected void init() {
+            press(Keyboard.KEY_C);
+            expectGui(GuiYesNoPopup.class, popup -> {
+                click(popup.getYesButton());
+                expectGuiClosed(() -> future.set(null));
+            });
+        }
+    }
+}

src/main/java/com/replaymod/compat/shaders/ShaderBeginRender.java

@@ -30,7 +30,7 @@ public class ShaderBeginRender {
             // check if Shaders are enabled
             if (!(boolean) (ShaderReflection.config_isShaders.invoke(null))) return;
 
-            ShaderReflection.shaders_beginRender.invoke(null, mc, mc.timer.elapsedPartialTicks, 0);
+            ShaderReflection.shaders_beginRender.invoke(null, mc, mc.timer.renderPartialTicks, 0);
         } catch (IllegalAccessException | InvocationTargetException e) {
             e.printStackTrace();
         }

src/main/java/com/replaymod/compat/shaders/mixin/MixinShaderRenderChunk.java

@@ -20,6 +20,7 @@ public abstract class MixinShaderRenderChunk {
      */
     @Inject(method = "isPlayerUpdate", at = @At("HEAD"), cancellable = true)
     private void replayModCompat_disableIsPlayerUpdate(CallbackInfoReturnable<Boolean> ci) {
+        // TODO: Update to 1.12 once optifine is available
         if (((EntityRendererHandler.IEntityRenderer) mc.entityRenderer).replayModRender_getHandler() == null) return;
         ci.setReturnValue(true);
     }

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

@@ -85,7 +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.setDetail("Handler", runnable::toString);
+                category.addDetail("Handler", runnable::toString);
                 throw new ReportedException(crashReport);
             }
         }
@@ -100,7 +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.setDetail("Handler", runnable::toString);
+                category.addDetail("Handler", runnable::toString);
                 throw new ReportedException(crashReport);
             }
         }

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

@@ -14,9 +14,19 @@ public class GuiFactory implements IModGuiFactory {
 
     }
 
+    @Override
+    public boolean hasConfigGui() {
+        return true;
+    }
+
+    @Override
+    public GuiScreen createConfigGui(GuiScreen parentScreen) {
+        return new GuiReplaySettings(parentScreen, ReplayMod.instance.getSettingsRegistry()).toMinecraft();
+    }
+
     @Override
     public Class<? extends GuiScreen> mainConfigGuiClass() {
-        return ConfigGuiWrapper.class;
+        return null;
     }
 
     @Override
@@ -28,17 +38,4 @@ public class GuiFactory implements IModGuiFactory {
     public RuntimeOptionGuiHandler getHandlerFor(RuntimeOptionCategoryElement element) {
         return null;
     }
-
-    public static class ConfigGuiWrapper extends GuiScreen {
-        private final GuiScreen parent;
-
-        public ConfigGuiWrapper(GuiScreen parent) {
-            this.parent = parent;
-        }
-
-        @Override
-        public void initGui() {
-            new GuiReplaySettings(parent, ReplayMod.instance.getSettingsRegistry()).display();
-        }
-    }
 }

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

@@ -19,12 +19,12 @@ public class MainMenuHandler {
         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.getGui().width / 2 - 100
+                if (button.x + button.width < event.getGui().width / 2 - 100
-                        || button.xPosition > event.getGui().width / 2 + 100
+                        || button.x > event.getGui().width / 2 + 100
-                        || button.yPosition > event.getGui().height / 4 + 10 + 4 * 24) continue;
+                        || button.y > 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;
+                button.y -= 2 * 24 - 10;
             }
         }
     }

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

@@ -1,8 +1,8 @@
 package com.replaymod.core.utils;
 
+import net.minecraft.client.renderer.BufferBuilder;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.renderer.Tessellator;
-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();
-        VertexBuffer vertexBuffer = tessellator.getBuffer();
+        BufferBuilder 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/Utils.java

@@ -2,6 +2,7 @@ package com.replaymod.core.utils;
 
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
 import de.johni0702.minecraft.gui.GuiRenderer;
 import de.johni0702.minecraft.gui.RenderInfo;
 import de.johni0702.minecraft.gui.container.AbstractGuiScrollable;
@@ -25,14 +26,28 @@ import org.lwjgl.input.Keyboard;
 import org.lwjgl.util.Dimension;
 import org.lwjgl.util.ReadableDimension;
 
+import javax.annotation.Nonnull;
 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;
 import java.util.UUID;
+import java.util.function.Consumer;
 
 import static net.minecraft.client.Minecraft.getMinecraft;
 
@@ -51,6 +66,42 @@ 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;
@@ -101,6 +152,20 @@ public class Utils {
         return Keyboard.isKeyDown(Keyboard.KEY_LCONTROL) || Keyboard.isKeyDown(Keyboard.KEY_RCONTROL);
     }
 
+    public static <T> void addCallback(ListenableFuture<T> future, Consumer<T> onSuccess, Consumer<Throwable> onFailure) {
+        Futures.addCallback(future, new FutureCallback<T>() {
+            @Override
+            public void onSuccess(@Nullable T result) {
+                onSuccess.accept(result);
+            }
+
+            @Override
+            public void onFailure(@Nonnull Throwable t) {
+                onFailure.accept(t);
+            }
+        });
+    }
+
     public static GuiInfoPopup error(Logger logger, GuiContainer container, CrashReport crashReport, Runnable onClose) {
         // Convert crash report to string
         String crashReportStr = crashReport.getCompleteReport();

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

@@ -3,6 +3,8 @@ package com.replaymod.core.utils;
 import net.minecraft.util.Timer;
 
 public class WrappedTimer extends Timer {
+    public static final float DEFAULT_MS_PER_TICK = 1000 / 20;
+
     protected final Timer wrapped;
 
     public WrappedTimer(Timer wrapped) {
@@ -19,15 +21,10 @@ public class WrappedTimer extends Timer {
     }
 
     protected void copy(Timer from, Timer to) {
-        to.ticksPerSecond = from.ticksPerSecond;
-        to.lastHRTime = from.lastHRTime;
         to.elapsedTicks = from.elapsedTicks;
         to.renderPartialTicks = from.renderPartialTicks;
-        to.timerSpeed = from.timerSpeed;
-        to.elapsedPartialTicks = from.elapsedPartialTicks;
         to.lastSyncSysClock = from.lastSyncSysClock;
-        to.lastSyncHRClock = from.lastSyncHRClock;
+        to.elapsedPartialTicks = from.elapsedPartialTicks;
-        to.counter = from.counter;
+        to.tickLength = from.tickLength;
-        to.timeSyncAdjustment = from.timeSyncAdjustment;
     }
 }

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;
 
@@ -57,6 +59,9 @@ public class GuiReplayEditor extends GuiScreen {
     public GuiButton currentTabButton;
     public GuiPanel currentTabPanel;
 
+    public final GuiLabel warningLabel = new GuiLabel(this).setColor(Colors.RED)
+            .setI18nText("replaymod.gui.editor.disclaimer");
+
     public final GuiPanel tabButtons = new GuiPanel(this).setLayout(new GridLayout().setSpacingX(5));
     public final List<GuiPanel> tabPanels = new ArrayList<>();
 
@@ -82,15 +87,18 @@ public class GuiReplayEditor extends GuiScreen {
                 // Move all inactive panels aside
                 tabPanels.forEach(e -> pos(e, Integer.MIN_VALUE, Integer.MIN_VALUE));
 
+                pos(warningLabel, 10, 22);
+                size(warningLabel, width - 20, 10);
+
+                pos(tabButtons, 10, y(warningLabel) + height(warningLabel) + 2);
+                size(tabButtons, width - 20, 20);
+
                 pos(buttonPanel, width - 10 - width(buttonPanel), height - 10 - height(buttonPanel));
 
                 if (currentTabPanel != null) {
-                    pos(currentTabPanel, 10, 50);
+                    pos(currentTabPanel, 10, y(tabButtons) + height(tabButtons) + 10);
                     size(currentTabPanel, width - 20, y(buttonPanel) - 10 - y(currentTabPanel));
                 }
-
-                pos(tabButtons, 10, 20);
-                size(tabButtons, width - 20, 20);
             }
         });
     }
@@ -119,10 +127,21 @@ 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);
+            File tmpDir = null;
-                 ReplayOutputStream out = outputReplay.writePacketData()) {
+            try {
-                // The input replay file MUST be closed before saving the output file
+                File actualOutputFile  = outputFile;
-                try (ReplayFile inputReplay = new ZipReplayFile(studio, inputFile);
+                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 +173,21 @@ 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 startHour = newGuiNumberField();
-    public final GuiNumberField startMin = new GuiNumberField().setSize(20, 20).setMaxLength(2);
+    public final GuiNumberField startMin = newGuiNumberField();
-    public final GuiNumberField startSec = new GuiNumberField().setSize(20, 20).setMaxLength(2);
+    public final GuiNumberField startSec = newGuiNumberField();
-    public final GuiNumberField startMilli = new GuiNumberField().setSize(40, 20).setMaxLength(4);
+    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 endHour = newGuiNumberField();
-    public final GuiNumberField endMin = new GuiNumberField().setSize(20, 20).setMaxLength(2);
+    public final GuiNumberField endMin = newGuiNumberField();
-    public final GuiNumberField endSec = new GuiNumberField().setSize(20, 20).setMaxLength(2);
+    public final GuiNumberField endSec = newGuiNumberField();
-    public final GuiNumberField endMilli = new GuiNumberField().setSize(40, 20).setMaxLength(4);
+    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/extras/LocalizationExtra.java

@@ -1,102 +1,106 @@
 package com.replaymod.extras;
 
-import com.google.common.base.Charsets;
 import com.google.common.collect.ImmutableSet;
 import com.replaymod.core.ReplayMod;
-import com.replaymod.online.ReplayModOnline;
-import com.replaymod.online.api.ApiClient;
-import com.replaymod.online.api.ApiException;
-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.MetadataSerializer;
 import net.minecraft.util.ResourceLocation;
-import org.apache.commons.lang3.StringEscapeUtils;
+import org.apache.commons.io.IOUtils;
 
 import java.awt.image.BufferedImage;
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.net.ConnectException;
+import java.net.URL;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+import static com.replaymod.extras.ReplayModExtras.LOGGER;
 
 public class LocalizationExtra implements Extra {
-    private ReplayModOnline module;
+    private static final String ZIP_FILE_URL = "https://github.com/ReplayMod/Translations/archive/master.zip";
+    private static final String LANG_PREFIX = "Translations-master/";
 
     @Override
     public void register(ReplayMod mod) throws Exception {
-        this.module = ReplayModOnline.instance;
-
         final Minecraft mc = mod.getMinecraft();
-        Thread localizedResourcePackLoader = new Thread(new Runnable() {
+        if (Boolean.parseBoolean(System.getProperty("replaymod.offline", "false"))) {
-            @Override
+            return;
-            public void run() {
+        }
-                try {
+        Thread localizedResourcePackLoader = new Thread(() -> {
+            try {
+                // Download zip of lang files
+                LOGGER.debug("Downloading languages from {}", ZIP_FILE_URL);
+                Map<String, byte[]> languages = new HashMap<>();
+                try (InputStream urlIn = new URL(ZIP_FILE_URL).openStream();
+                     ZipInputStream in = new ZipInputStream(urlIn)) {
+                    ZipEntry entry;
+                    while ((entry = in.getNextEntry()) != null) {
+                        String name = entry.getName();
+                        if (!name.startsWith(LANG_PREFIX) || !name.endsWith(".lang")) {
+                           continue;
+                        }
+                        name = name.substring(LANG_PREFIX.length());
+                        languages.put(name, IOUtils.toByteArray(in));
+                        LOGGER.debug("Added language file {}", name);
+                    }
+                }
+                LOGGER.debug("Downloaded {} languages", languages.size());
+
+                // Add lang files as resource pack
+                mc.addScheduledTask(() -> {
                     @SuppressWarnings("unchecked")
                     List<IResourcePack> defaultResourcePacks = mc.defaultResourcePacks;
-                    defaultResourcePacks.add(new LocalizedResourcePack(module.getApiClient()));
+                    defaultResourcePacks.add(new LocalizedResourcePack(languages));
-                    mc.addScheduledTask(new Runnable() {
+                    mc.getLanguageManager().onResourceManagerReload(mc.getResourceManager());
-                        @Override
+                    LOGGER.debug("Added language files to resource packs and reloaded LanguageManager");
-                        public void run() {
+                });
-                            mc.refreshResources();
+            } catch (Throwable t) {
-                        }
+                LOGGER.error("Loading localized resource pack:", t);
-                    });
-                } catch(Exception e) {
-                    e.printStackTrace();
-                }
             }
         }, "localizedResourcePackLoader");
+        localizedResourcePackLoader.setDaemon(true);
         localizedResourcePackLoader.start();
     }
 
-    @RequiredArgsConstructor
     public static class LocalizedResourcePack implements IResourcePack {
-        private final ApiClient apiClient;
+        private final Pattern LANG_PATTERN = Pattern.compile("^lang/([.+].lang)$");
-        private Map<String, String> availableLanguages = new HashMap<>();
+        private final Map<String, byte[]> languages;
-        private boolean websiteAvailable = true;
+
+        public LocalizedResourcePack(Map<String, byte[]> languages) {
+            this.languages = languages;
+        }
 
         @Override
         public InputStream getInputStream(ResourceLocation loc) {
-            if(!loc.getResourcePath().endsWith(".lang")) return null;
+            if (!"replaymod".equals(loc.getResourceDomain())) return null;
-            String langcode = loc.getResourcePath().split("/")[1].split("\\.")[0];
+            Matcher matcher = LANG_PATTERN.matcher(loc.getResourcePath());
-            if(availableLanguages.containsKey(langcode)) return new ByteArrayInputStream(availableLanguages.get(langcode).getBytes(Charsets.UTF_8));
+            if (matcher.matches()) {
+                byte[] bytes = languages.get(matcher.group());
+                if (bytes != null) {
+                    return new ByteArrayInputStream(bytes);
+                }
+            }
             return null;
         }
 
         @Override
         public boolean resourceExists(ResourceLocation loc) {
-            if(!(loc.getResourcePath().endsWith(".lang"))) return false;
+            // Assumes that getInputStream returns a ByteArrayInputStream that doesn't need to be closed
-            String langcode = loc.getResourcePath().split("/")[1].split("\\.")[0];
+            return getInputStream(loc) != null;
-            if(availableLanguages.containsKey(langcode)) return true;
-            if(!websiteAvailable) return false;
-            try {
-                if (Boolean.parseBoolean(System.getProperty("replaymod.offline", "false"))) {
-                    return false;
-                }
-                String lang = apiClient.getTranslation(langcode);
-                String prop = StringEscapeUtils.unescapeHtml4(lang);
-                availableLanguages.put(langcode, prop);
-                return true;
-            } catch (ApiException e) {
-                if (e.getError().getId() != 16) { // This language has not been translated
-                    e.printStackTrace();
-                }
-            } catch(ConnectException ce) {
-                websiteAvailable = false;
-                ce.printStackTrace();
-            } catch(Exception e) {
-                e.printStackTrace();
-            }
-            return false;
         }
 
         @Override
         public Set<String> getResourceDomains() {
-            return ImmutableSet.of("minecraft", "replaymod");
+            return ImmutableSet.of("replaymod");
         }
 
         @Override

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 +25,11 @@ 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;
+import static com.replaymod.extras.ReplayModExtras.LOGGER;
+
 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;
@@ -36,11 +40,29 @@ public class OpenEyeExtra implements Extra {
         mod.getSettingsRegistry().register(ASK_FOR_OPEN_EYE);
 
         if (!Loader.isModLoaded("OpenEye") && mod.getSettingsRegistry().get(ASK_FOR_OPEN_EYE)) {
-            mod.runLater(() -> new OfferGui(GuiScreen.wrap(mod.getMinecraft().currentScreen)).display());
+            new Thread(() -> {
+                try {
+                    LOGGER.trace("Checking for OpenEye availability");
+                    HttpsURLConnection connection = (HttpsURLConnection) new URL(DOWNLOAD_URL).openConnection();
+                    connection.setSSLSocketFactory(SSL_SOCKET_FACTORY);
+                    connection.setRequestMethod("HEAD");
+                    connection.connect();
+                    LOGGER.trace("Got response code: {}", connection.getResponseCode());
+                    if (connection.getResponseCode() == 200) {
+                        mod.runLater(() -> new OfferGui(GuiScreen.wrap(mod.getMinecraft().currentScreen)).display());
+                    } else {
+                        LOGGER.info("Cannot offer OpenEye, server returned: {} {}",
+                                connection.getResponseCode(), connection.getResponseMessage());
+                    }
+                    connection.disconnect();
+                } catch (Throwable e) {
+                    LOGGER.error("Failed to check for OpenEye availability:", e);
+                }
+            }).start();
         }
     }
 
-    private class OfferGui extends AbstractGuiScreen<OfferGui> {
+    public class OfferGui extends AbstractGuiScreen<OfferGui> {
         public final GuiScreen parent;
         public final GuiPanel textPanel = new GuiPanel().setLayout(new VerticalLayout().setSpacing(3))
                 .addElements(new VerticalLayout.Data(0.5),
@@ -66,10 +88,12 @@ public class OpenEyeExtra implements Extra {
                 GuiPopup popup = new GuiPopup(OfferGui.this);
                 new Thread(() -> {
                     try {
-                        File targetFile = new File("mods/" + Loader.MC_VERSION, "OpenEye.jar");
+                        File targetFile = new File(mod.getMinecraft().mcDataDir, "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) {
@@ -102,7 +126,7 @@ public class OpenEyeExtra implements Extra {
         }
     }
 
-    private static final class GuiPopup extends AbstractGuiPopup<GuiPopup> {
+    public static final class GuiPopup extends AbstractGuiPopup<GuiPopup> {
         GuiPopup(GuiContainer container) {
             super(container);
             popup.addElements(null, new GuiIndicator().setColor(Colors.BLACK));

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

@@ -32,11 +32,11 @@ public class ReplayModExtras {
             OpenEyeExtra.class
     );
 
-    private Logger logger;
+    public static Logger LOGGER;
 
     @Mod.EventHandler
     public void preInit(FMLPreInitializationEvent event) {
-        logger = event.getModLog();
+        LOGGER = event.getModLog();
     }
 
     @Mod.EventHandler
@@ -46,7 +46,7 @@ public class ReplayModExtras {
                 Extra extra = cls.newInstance();
                 extra.register(ReplayMod.instance);
             } catch (Throwable t) {
-                logger.warn("Failed to load extra " + cls.getName() + ": ", t);
+                LOGGER.warn("Failed to load extra " + cls.getName() + ": ", t);
             }
         }
     }

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

@@ -11,7 +11,9 @@ 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.client.event.RenderHandEvent;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import org.lwjgl.input.Keyboard;
@@ -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

@@ -4,10 +4,15 @@ import com.replaymod.core.utils.Utils;
 import com.replaymod.replay.ReplayModReplay;
 import de.johni0702.minecraft.gui.GuiRenderer;
 import de.johni0702.minecraft.gui.RenderInfo;
-import de.johni0702.minecraft.gui.container.*;
+import de.johni0702.minecraft.gui.container.GuiClickable;
+import de.johni0702.minecraft.gui.container.GuiContainer;
+import de.johni0702.minecraft.gui.container.GuiPanel;
+import de.johni0702.minecraft.gui.container.GuiScreen;
+import de.johni0702.minecraft.gui.container.GuiVerticalList;
 import de.johni0702.minecraft.gui.element.GuiCheckbox;
 import de.johni0702.minecraft.gui.element.GuiImage;
 import de.johni0702.minecraft.gui.element.GuiLabel;
+import de.johni0702.minecraft.gui.element.GuiTooltip;
 import de.johni0702.minecraft.gui.element.IGuiCheckbox;
 import de.johni0702.minecraft.gui.function.Closeable;
 import de.johni0702.minecraft.gui.layout.CustomLayout;
@@ -37,6 +42,7 @@ public class PlayerOverviewGui extends GuiScreen implements Closeable {
     public final GuiVerticalList playersScrollable = new GuiVerticalList(contentPanel)
             .setDrawSlider(true).setDrawShadow(true);
     public final GuiCheckbox saveCheckbox = new GuiCheckbox(contentPanel)
+            .setTooltip(new GuiTooltip().setI18nText("replaymod.gui.playeroverview.remembersettings.description"))
             .setI18nLabel("replaymod.gui.playeroverview.remembersettings");
     public final GuiCheckbox checkAll = new GuiCheckbox(contentPanel){
         @Override
@@ -44,14 +50,14 @@ public class PlayerOverviewGui extends GuiScreen implements Closeable {
             getMinecraft().getSoundHandler().playSound(PositionedSoundRecord.getMasterRecord(SoundEvents.UI_BUTTON_CLICK, 1.0F));
             playersScrollable.forEach(IGuiCheckbox.class).setChecked(true);
         }
-    }.setLabel("").setChecked(true);
+    }.setLabel("").setChecked(true).setTooltip(new GuiTooltip().setI18nText("replaymod.gui.playeroverview.showall"));
     public final GuiCheckbox uncheckAll = new GuiCheckbox(contentPanel){
         @Override
         public void onClick() {
             getMinecraft().getSoundHandler().playSound(PositionedSoundRecord.getMasterRecord(SoundEvents.UI_BUTTON_CLICK, 1.0F));
             playersScrollable.forEach(IGuiCheckbox.class).setChecked(false);
         }
-    }.setLabel("").setChecked(false);
+    }.setLabel("").setChecked(false).setTooltip(new GuiTooltip().setI18nText("replaymod.gui.playeroverview.hideall"));
 
     {
         setBackground(Background.NONE);

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

@@ -82,7 +82,7 @@ public class ReplayModOnline {
         // Initial login prompt
         if (!core.getSettingsRegistry().get(Setting.SKIP_LOGIN_PROMPT)) {
             if (!isLoggedIn()) {
-                new GuiLoginPrompt(apiClient, null, null, false).display();
+                core.runLater(() -> new GuiLoginPrompt(apiClient, GuiScreen.wrap(getMinecraft().currentScreen), null, false).display());
             }
         }
     }

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.io.BufferedInputStream;
-import java.net.HttpURLConnection;
+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

@@ -6,7 +6,8 @@ public enum MinecraftVersion {
     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");
+    MC_1_11_2("Minecraft 1.11.2", "1.11.2"),
+    MC_1_12("Minecraft 1.12", "1.12");
 
     private String niceName, apiName;
 

src/main/java/com/replaymod/online/gui/GuiLoginPrompt.java

@@ -21,7 +21,7 @@ public class GuiLoginPrompt extends AbstractGuiScreen<GuiLoginPrompt> {
     private GuiLabel noAccountLabel = new GuiLabel(this).setI18nText("replaymod.gui.login.noacc");
     private GuiLabel statusLabel = new GuiLabel(this);
     private GuiButton loginButton = new GuiButton(this).setI18nLabel("replaymod.gui.login").setSize(150, 20).setEnabled(false);
-    private GuiButton cancelButton = new GuiButton(this).setI18nLabel("replaymod.gui.cancel").setSize(150, 20);
+    public GuiButton cancelButton = new GuiButton(this).setI18nLabel("replaymod.gui.cancel").setSize(150, 20);
     private GuiButton registerButton = new GuiButton(this).setI18nLabel("replaymod.gui.register").setSize(150, 20);
     private GuiTextField username = new GuiTextField(this).setSize(145, 20).setMaxLength(16).setFocused(true);
     private GuiPasswordField password = new GuiPasswordField(this).setSize(145, 20)

src/main/java/com/replaymod/online/gui/GuiRegister.java

@@ -55,7 +55,7 @@ public class GuiRegister extends AbstractGuiScreen<GuiRegister> {
                 pos(cancelButton, width / 2 + 2, 170);
                 pos(statusLabel, width / 2 - statusLabel.getMinSize().getWidth() / 2, 152);
 
-                FontRenderer font = getMinecraft().fontRendererObj;
+                FontRenderer font = getMinecraft().fontRenderer;
                 int lineCount = font.listFormattedStringToWidth(disclaimerLabel.getText(), width - 10).size();
                 Dimension dim = new Dimension(width - 10, font.FONT_HEIGHT * lineCount);
                 disclaimerLabel.setSize(dim);

src/main/java/com/replaymod/online/gui/GuiReplayCenter.java

@@ -28,6 +28,7 @@ import de.johni0702.minecraft.gui.container.GuiScreen;
 import de.johni0702.minecraft.gui.element.GuiButton;
 import de.johni0702.minecraft.gui.element.GuiImage;
 import de.johni0702.minecraft.gui.element.GuiLabel;
+import de.johni0702.minecraft.gui.element.GuiTooltip;
 import de.johni0702.minecraft.gui.element.IGuiButton;
 import de.johni0702.minecraft.gui.element.advanced.GuiResourceLoadingList;
 import de.johni0702.minecraft.gui.layout.CustomLayout;
@@ -38,7 +39,7 @@ import de.johni0702.minecraft.gui.utils.Colors;
 import de.johni0702.minecraft.gui.utils.Consumer;
 import net.minecraftforge.fml.common.FMLLog;
 import org.apache.commons.io.FilenameUtils;
-import org.apache.logging.log4j.core.helpers.Strings;
+import org.apache.logging.log4j.util.Strings;
 import org.lwjgl.util.Dimension;
 import org.lwjgl.util.ReadableDimension;
 
@@ -109,6 +110,7 @@ public class GuiReplayCenter extends GuiScreen {
         public void run() {
             GuiReplayEntry selected = list.getSelected();
             replayButtonPanel.forEach(IGuiButton.class).setEnabled(selected != null);
+            replayButtonPanel.forEach(IGuiButton.class).setTooltip(null);
             if (selected != null) {
                 int replayId = selected.fileInfo.getId();
                 boolean favorited = favoritedReplays.contains(replayId);
@@ -123,10 +125,22 @@ public class GuiReplayCenter extends GuiScreen {
                 favoriteButton.setI18nLabel("replaymod.gui.center." + (favorited ? "unfavorite" : "favorite"));
                 // Only allow button usage for either unfavorite or favorite after they've actually downloaded it
                 favoriteButton.setEnabled(favorited || selected.downloaded);
+                if (favoriteButton.isEnabled()) {
+                    favoriteButton.setTooltip(null);
+                } else {
+                    favoriteButton.setTooltip(new GuiTooltip().setI18nText("replaymod.gui.center.downloadrequired"));
+                }
 
                 // Similar for like/dislike buttons
                 likeButton.setEnabled(selected.downloaded);
                 dislikeButton.setEnabled(selected.downloaded);
+                if (likeButton.isEnabled()) {
+                    likeButton.setTooltip(null);
+                    dislikeButton.setTooltip(null);
+                } else {
+                    likeButton.setTooltip(new GuiTooltip().setI18nText("replaymod.gui.center.downloadrequired"));
+                    dislikeButton.setTooltip(new GuiTooltip().setI18nText("replaymod.gui.center.downloadrequired"));
+                }
                 likeButton.setI18nLabel("replaymod.gui." + (liked ? "removelike" : "like"));
                 dislikeButton.setI18nLabel("replaymod.gui." + (disliked ? "removedislike" : "dislike"));
             }

src/main/java/com/replaymod/online/gui/GuiUploadReplay.java

@@ -17,7 +17,12 @@ import com.replaymod.replaystudio.studio.ReplayStudio;
 import de.johni0702.minecraft.gui.container.GuiContainer;
 import de.johni0702.minecraft.gui.container.GuiPanel;
 import de.johni0702.minecraft.gui.container.GuiScreen;
-import de.johni0702.minecraft.gui.element.*;
+import de.johni0702.minecraft.gui.element.GuiButton;
+import de.johni0702.minecraft.gui.element.GuiCheckbox;
+import de.johni0702.minecraft.gui.element.GuiImage;
+import de.johni0702.minecraft.gui.element.GuiLabel;
+import de.johni0702.minecraft.gui.element.GuiTextField;
+import de.johni0702.minecraft.gui.element.GuiTooltip;
 import de.johni0702.minecraft.gui.element.advanced.GuiDropdownMenu;
 import de.johni0702.minecraft.gui.element.advanced.GuiProgressBar;
 import de.johni0702.minecraft.gui.element.advanced.GuiTextArea;
@@ -234,6 +239,8 @@ public class GuiUploadReplay extends GuiScreen {
         });
 
         validateInputs();
+        name.onTextChanged(s -> validateInputs());
+        tags.onTextChanged(s -> validateInputs());
     }
 
     public void validateInputs() {

src/main/java/com/replaymod/pathing/gui/GuiKeyframeRepository.java

@@ -4,6 +4,7 @@ import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.SettableFuture;
 import com.replaymod.core.ReplayMod;
+import com.replaymod.core.utils.Utils;
 import com.replaymod.replay.ReplayModReplay;
 import com.replaymod.replaystudio.pathing.PathingRegistry;
 import com.replaymod.replaystudio.pathing.path.Path;
@@ -11,7 +12,11 @@ import com.replaymod.replaystudio.pathing.path.Timeline;
 import com.replaymod.replaystudio.replay.ReplayFile;
 import de.johni0702.minecraft.gui.GuiRenderer;
 import de.johni0702.minecraft.gui.RenderInfo;
-import de.johni0702.minecraft.gui.container.*;
+import de.johni0702.minecraft.gui.container.AbstractGuiClickableContainer;
+import de.johni0702.minecraft.gui.container.GuiContainer;
+import de.johni0702.minecraft.gui.container.GuiPanel;
+import de.johni0702.minecraft.gui.container.GuiScreen;
+import de.johni0702.minecraft.gui.container.GuiVerticalList;
 import de.johni0702.minecraft.gui.element.GuiButton;
 import de.johni0702.minecraft.gui.element.GuiLabel;
 import de.johni0702.minecraft.gui.element.GuiTextField;
@@ -41,9 +46,16 @@ public class GuiKeyframeRepository extends GuiScreen implements Closeable {
     public final GuiButton overwriteButton = new GuiButton(buttonPanel).onClick(new Runnable() {
         @Override
         public void run() {
-            timelines.put(selectedEntry.name, currentTimeline);
+            GuiYesNoPopup popup = GuiYesNoPopup.open(GuiKeyframeRepository.this,
-            overwriteButton.setDisabled();
+                    new GuiLabel().setI18nText("replaymod.gui.keyframerepo.overwrite").setColor(Colors.BLACK)
-            save();
+            ).setYesI18nLabel("gui.yes").setNoI18nLabel("gui.no");
+            Utils.addCallback(popup.getFuture(), doIt -> {
+                if (doIt) {
+                    timelines.put(selectedEntry.name, currentTimeline);
+                    overwriteButton.setDisabled();
+                    save();
+                }
+            }, Throwable::printStackTrace);
         }
     }).setSize(75, 20).setI18nLabel("replaymod.gui.overwrite").setDisabled();
     public final GuiButton saveAsButton = new GuiButton(buttonPanel).onClick(new Runnable() {

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

@@ -6,6 +6,7 @@ import com.google.common.collect.Ordering;
 import com.google.common.primitives.Longs;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.google.common.util.concurrent.SettableFuture;
+import com.replaymod.core.utils.WrappedTimer;
 import com.replaymod.replay.ReplayHandler;
 import com.replaymod.replaystudio.pathing.path.Keyframe;
 import com.replaymod.replaystudio.pathing.path.Path;
@@ -68,8 +69,8 @@ public abstract class AbstractTimelinePlayer {
         MinecraftForge.EVENT_BUS.register(this);
         lastTime = 0;
         mc.timer = new ReplayTimer(mc.timer);
-        mc.timer.timerSpeed = 1;
+        mc.timer.tickLength = WrappedTimer.DEFAULT_MS_PER_TICK;
-        mc.timer.elapsedPartialTicks = mc.timer.elapsedTicks = 0;
+        mc.timer.renderPartialTicks = mc.timer.elapsedTicks = 0;
         return future = settableFuture = SettableFuture.create();
     }
 
@@ -107,10 +108,9 @@ public abstract class AbstractTimelinePlayer {
         float timeInTicks = replayTime / 50f;
         float previousTimeInTicks = lastTime / 50f;
         float passedTicks = timeInTicks - previousTimeInTicks;
-        mc.timer.elapsedPartialTicks += passedTicks;
+        mc.timer.renderPartialTicks += passedTicks;
-        mc.timer.elapsedTicks = (int) mc.timer.elapsedPartialTicks;
+        mc.timer.elapsedTicks = (int) mc.timer.renderPartialTicks;
-        mc.timer.elapsedPartialTicks -= mc.timer.elapsedTicks;
+        mc.timer.renderPartialTicks -= mc.timer.elapsedTicks;
-        mc.timer.renderPartialTicks =  mc.timer.elapsedPartialTicks;
 
         lastTime = replayTime;
 

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

@@ -4,6 +4,8 @@ import com.replaymod.core.ReplayMod;
 import com.replaymod.core.utils.Restrictions;
 import com.replaymod.recording.handler.ConnectionEventHandler;
 import com.replaymod.recording.packet.PacketListener;
+import io.netty.channel.ChannelDuplexHandler;
+import io.netty.channel.ChannelHandler;
 import net.minecraftforge.common.MinecraftForge;
 import net.minecraft.network.NetworkManager;
 import net.minecraftforge.fml.common.Mod;
@@ -54,9 +56,12 @@ public class ReplayModRecording {
         EventBus bus = MinecraftForge.EVENT_BUS;
         bus.register(connectionEventHandler = new ConnectionEventHandler(logger, core));
 
-        NetworkRegistry.INSTANCE.newSimpleChannel(Restrictions.PLUGIN_CHANNEL);
+        NetworkRegistry.INSTANCE.newChannel(Restrictions.PLUGIN_CHANNEL, new RestrictionsChannelHandler());
     }
 
+    @ChannelHandler.Sharable
+    private static class RestrictionsChannelHandler extends ChannelDuplexHandler {}
+
     public void initiateRecording(NetworkManager networkManager) {
         connectionEventHandler.onConnectedToServerEvent(networkManager);
     }

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

@@ -42,7 +42,7 @@ public class GuiRecordingOverlay {
     public void renderRecordingIndicator(RenderGameOverlayEvent.Post event) {
         if (event.getType() != RenderGameOverlayEvent.ElementType.ALL) return;
         if (settingsRegistry.get(Setting.INDICATOR)) {
-            FontRenderer fontRenderer = mc.fontRendererObj;
+            FontRenderer fontRenderer = mc.fontRenderer;
             fontRenderer.drawString(I18n.format("replaymod.gui.recording").toUpperCase(), 30, 18 - (fontRenderer.FONT_HEIGHT / 2), 0xffffffff);
             mc.renderEngine.bindTexture(TEXTURE);
             GlStateManager.resetColor();

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

@@ -46,7 +46,7 @@ public class ConnectionEventHandler {
         try {
             boolean local = networkManager.isLocalChannel();
             if (local) {
-                if (mc.getIntegratedServer().getEntityWorld().getWorldType() == WorldType.DEBUG_WORLD) {
+                if (mc.getIntegratedServer().getEntityWorld().getWorldType() == WorldType.DEBUG_ALL_BLOCK_STATES) {
                     logger.info("Debug World recording is not supported.");
                     return;
                 }

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

@@ -235,7 +235,7 @@ public class RecordingEventHandler {
     public void onPickupItem(ItemPickupEvent event) {
         try {
             packetListener.save(new SPacketCollectItem(event.pickedUp.getEntityId(), event.player.getEntityId(),
-                    event.pickedUp.getEntityItem().getMaxStackSize()));
+                    event.pickedUp.getItem().getMaxStackSize()));
         } catch(Exception e) {
             e.printStackTrace();
         }

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

@@ -24,4 +24,9 @@ public abstract class MixinNetHandlerLoginClient {
     public void replayModRecording_initiateRecording(CallbackInfo cb) {
         ReplayModRecording.instance.initiateRecording(networkManager);
     }
+
+    @Inject(method = "handleLoginSuccess", at=@At("RETURN"))
+    public void replayModRecording_raceConditionWorkAround(CallbackInfo cb) {
+        networkManager.channel().config().setAutoRead(true);
+    }
 }

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

@@ -1,8 +1,11 @@
 package com.replaymod.recording.mixin;
 
 import com.replaymod.recording.handler.FMLHandshakeFilter;
+import io.netty.channel.ChannelConfig;
 import io.netty.channel.ChannelPipeline;
 import io.netty.channel.embedded.EmbeddedChannel;
+import net.minecraft.network.EnumConnectionState;
+import net.minecraft.network.NetworkManager;
 import net.minecraftforge.fml.common.network.handshake.FMLHandshakeCodec;
 import net.minecraftforge.fml.common.network.handshake.NetworkDispatcher;
 import net.minecraftforge.fml.relauncher.Side;
@@ -10,6 +13,7 @@ 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.Redirect;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 @Mixin(value = NetworkDispatcher.class, remap = false)
@@ -43,4 +47,17 @@ public abstract class MixinNetworkDispatcher {
                     "replaymod_filter", new FMLHandshakeFilter());
         }
     }
+
+    @Redirect(method = "clientListenForServerHandshake", at = @At(value = "INVOKE", remap = true, target =
+            "Lnet/minecraft/network/NetworkManager;setConnectionState(Lnet/minecraft/network/EnumConnectionState;)V"))
+    public void replayModRecording_raceConditionWorkAround1(NetworkManager self, EnumConnectionState ignored) { }
+
+    @Redirect(method = "insertIntoChannel", at = @At(value = "INVOKE", target =
+            "Lio/netty/channel/ChannelConfig;setAutoRead(Z)Lio/netty/channel/ChannelConfig;"))
+    public ChannelConfig replayModRecording_raceConditionWorkAround2(ChannelConfig self, boolean autoRead) {
+        if (side == Side.CLIENT) {
+            autoRead = false;
+        }
+        return self.setAutoRead(autoRead);
+    }
 }

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

@@ -197,7 +197,7 @@ public class PacketListener extends ChannelInboundHandlerAdapter {
     }
 
     @SuppressWarnings("unchecked")
-    private byte[] getPacketData(Packet packet) throws IOException {
+    private byte[] getPacketData(Packet packet) throws Exception {
         if (packet instanceof SPacketSpawnMob) {
             SPacketSpawnMob p = (SPacketSpawnMob) packet;
             if (p.dataManager == null) {

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

@@ -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;
@@ -84,7 +88,7 @@ public class ResourcePackRecorder {
 
             if (levelDir.isFile()) {
                 netManager.sendPacket(new CPacketResourcePackStatus(CPacketResourcePackStatus.Action.ACCEPTED));
-                Futures.addCallback(mc.getResourcePackRepository().setResourcePackInstance(levelDir), new FutureCallback<Object>() {
+                Futures.addCallback(mc.getResourcePackRepository().setServerResourcePack(levelDir), new FutureCallback<Object>() {
                     @Override
                     public void onSuccess(Object result) {
                         recordResourcePack(levelDir, requestId);
@@ -170,7 +174,7 @@ public class ResourcePackRecorder {
                     String fileHash = Hashing.sha1().hashBytes(Files.toByteArray(file)).toString();
                     if (fileHash.equals(hash)) {
                         recordResourcePack(file, requestId);
-                        return repo.setResourcePackInstance(file);
+                        return repo.setServerResourcePack(file);
                     }
 
                     logger.warn("File " + file + " had wrong hash (expected " + hash + ", found " + fileHash + "). Deleting it.");
@@ -192,7 +196,7 @@ public class ResourcePackRecorder {
                 @Override
                 public void onSuccess(Object value) {
                     recordResourcePack(file, requestId);
-                    repo.setResourcePackInstance(file);
+                    repo.setServerResourcePack(file);
                 }
 
                 @Override

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 videoWidth = new GuiNumberField().setSize(50, 20).setMinValue(1).setValidateOnFocusChange(true);
-    public final GuiNumberField videoHeight = new GuiNumberField().setSize(50, 20).setMinValue(1);
+    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/mixin/MixinParticleManager.java

@@ -4,7 +4,7 @@ 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.client.renderer.BufferBuilder;
 import net.minecraft.entity.Entity;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
@@ -12,19 +12,19 @@ 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"))
+    @Redirect(method = "renderParticles", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/particle/Particle;renderParticle(Lnet/minecraft/client/renderer/BufferBuilder;Lnet/minecraft/entity/Entity;FFFFFF)V"))
-    private void renderNormalParticle(Particle particle, VertexBuffer vertexBuffer, Entity view, float partialTicks,
+    private void renderNormalParticle(Particle particle, BufferBuilder 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"))
+    @Redirect(method = "renderLitParticles", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/particle/Particle;renderParticle(Lnet/minecraft/client/renderer/BufferBuilder;Lnet/minecraft/entity/Entity;FFFFFF)V"))
-    private void renderLitParticle(Particle particle, VertexBuffer vertexBuffer, Entity view, float partialTicks,
+    private void renderLitParticle(Particle particle, BufferBuilder 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,
+    private void renderParticle(Particle particle, BufferBuilder 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) {

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

@@ -1,5 +1,6 @@
 package com.replaymod.render.rendering;
 
+import com.replaymod.core.utils.WrappedTimer;
 import com.replaymod.pathing.player.AbstractTimelinePlayer;
 import com.replaymod.pathing.player.ReplayTimer;
 import com.replaymod.pathing.properties.TimestampProperty;
@@ -111,8 +112,8 @@ public class VideoRenderer implements RenderInfo {
 
             if (videoStart > 1000) {
                 int replayTime = videoStart - 1000;
-                timer.elapsedPartialTicks = timer.renderPartialTicks = 0;
+                timer.renderPartialTicks = 0;
-                timer.timerSpeed = 1;
+                timer.tickLength = WrappedTimer.DEFAULT_MS_PER_TICK;
                 while (replayTime < videoStart) {
                     timer.elapsedTicks = 1;
                     replayTime += 50;

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

@@ -3,6 +3,7 @@ package com.replaymod.replay;
 import com.google.common.base.Preconditions;
 import com.mojang.authlib.GameProfile;
 import com.replaymod.core.utils.Restrictions;
+import com.replaymod.core.utils.WrappedTimer;
 import com.replaymod.replay.camera.CameraEntity;
 import com.replaymod.replay.camera.SpectatorCameraController;
 import com.replaymod.replay.events.ReplayCloseEvent;
@@ -119,7 +120,7 @@ public class ReplayHandler {
             mc.loadWorld(null);
         }
 
-        mc.timer.timerSpeed = 1;
+        mc.timer.tickLength = WrappedTimer.DEFAULT_MS_PER_TICK;
         overlay.setVisible(false);
 
         ReplayModReplay.instance.replayHandler = null;
@@ -141,13 +142,14 @@ public class ReplayHandler {
         networkManager.setNetHandler(netHandlerPlayClient);
         FMLClientHandler.instance().setPlayClient(netHandlerPlayClient);
 
-        channel = new EmbeddedChannel(networkManager);
+        channel = new EmbeddedChannel();
         NetworkDispatcher networkDispatcher = new NetworkDispatcher(networkManager);
         channel.attr(NetworkDispatcher.FML_DISPATCHER).set(networkDispatcher);
 
         channel.pipeline().addFirst("ReplayModReplay_replaySender", replaySender);
-        channel.pipeline().addAfter("ReplayModReplay_replaySender", "fml:packet_handler", networkDispatcher);
+        channel.pipeline().addLast("packet_handler", networkManager);
         channel.pipeline().fireChannelActive();
+        networkDispatcher.clientToServerHandshake();
     }
 
     public ReplayFile getReplayFile() {
@@ -209,6 +211,9 @@ public class ReplayHandler {
      */
     public void spectateEntity(Entity e) {
         CameraEntity cameraEntity = getCameraEntity();
+        if (cameraEntity == null) {
+            return; // Cannot spectate if we have no camera
+        }
         if (e == null || e == cameraEntity) {
             spectating = null;
             e = cameraEntity;
@@ -296,7 +301,7 @@ public class ReplayHandler {
                     @Override
                     public void drawScreen(int mouseX, int mouseY, float partialTicks) {
                         drawBackground(0);
-                        drawCenteredString(fontRendererObj, I18n.format("replaymod.gui.pleasewait"),
+                        drawCenteredString(fontRenderer, I18n.format("replaymod.gui.pleasewait"),
                                 width / 2, height / 2, 0xffffffff);
                     }
                 };

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

@@ -6,7 +6,11 @@ import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.replaymod.core.ReplayMod;
 import com.replaymod.core.utils.ModCompat;
-import com.replaymod.replay.camera.*;
+import com.replaymod.replay.camera.CameraController;
+import com.replaymod.replay.camera.CameraControllerRegistry;
+import com.replaymod.replay.camera.CameraEntity;
+import com.replaymod.replay.camera.ClassicCameraController;
+import com.replaymod.replay.camera.VanillaCameraController;
 import com.replaymod.replay.gui.overlay.GuiMarkerTimeline;
 import com.replaymod.replay.gui.screen.GuiModCompatWarning;
 import com.replaymod.replay.handler.GuiHandler;
@@ -99,6 +103,7 @@ public class ReplayModReplay {
                         @Override
                         public void onSuccess(NoGuiScreenshot result) {
                             try {
+                                core.printInfoToChat("replaymod.chat.savingthumb");
                                 replayHandler.getReplayFile().writeThumb(result.getImage());
                                 core.printInfoToChat("replaymod.chat.savedthumb");
                             } catch (IOException e) {
@@ -109,6 +114,7 @@ public class ReplayModReplay {
                         @Override
                         public void onFailure(Throwable t) {
                             t.printStackTrace();
+                            core.printWarningToChat("replaymod.chat.failedthumb");
                         }
                     });
                 }

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

@@ -4,6 +4,7 @@ import com.google.common.base.Preconditions;
 import com.google.common.io.Files;
 import com.google.common.util.concurrent.ListenableFutureTask;
 import com.replaymod.core.utils.Restrictions;
+import com.replaymod.core.utils.WrappedTimer;
 import com.replaymod.replay.camera.CameraEntity;
 import com.replaymod.replaystudio.replay.ReplayFile;
 import io.netty.buffer.ByteBuf;
@@ -396,7 +397,7 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
                         if (!file.exists()) {
                             IOUtils.copy(replayFile.getResourcePack(hash).get(), new FileOutputStream(file));
                         }
-                        mc.getResourcePackRepository().setResourcePackInstance(file);
+                        mc.getResourcePackRepository().setServerResourcePack(file);
                     }
                 }
                 return null;
@@ -518,7 +519,7 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
      * @return {@code true} if it is paused, {@code false} otherwise
      */
     public boolean paused() {
-        return mc.timer.timerSpeed == 0;
+        return mc.timer.tickLength == Float.POSITIVE_INFINITY;
     }
 
     /**
@@ -538,7 +539,7 @@ public class ReplaySender extends ChannelInboundHandlerAdapter {
      */
     public void setReplaySpeed(final double d) {
         if(d != 0) this.replaySpeed = d;
-        mc.timer.timerSpeed = (float) d;
+        mc.timer.tickLength = WrappedTimer.DEFAULT_MS_PER_TICK / (float) d;
     }
 
     /////////////////////////////////////////////////////////

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

@@ -19,6 +19,7 @@ import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.item.EntityItemFrame;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.inventory.EntityEquipmentSlot;
+import net.minecraft.stats.RecipeBook;
 import net.minecraft.stats.StatisticsManager;
 import net.minecraft.util.EnumHand;
 import net.minecraft.util.ResourceLocation;
@@ -66,8 +67,8 @@ public class CameraEntity extends EntityPlayerSP {
      */
     private final EventHandler eventHandler = new EventHandler();
 
-    public CameraEntity(Minecraft mcIn, World worldIn, NetHandlerPlayClient netHandlerPlayClient, StatisticsManager statisticsManager) {
+    public CameraEntity(Minecraft mcIn, World worldIn, NetHandlerPlayClient netHandlerPlayClient, StatisticsManager statisticsManager, RecipeBook recipeBook) {
-        super(mcIn, worldIn, netHandlerPlayClient, statisticsManager);
+        super(mcIn, worldIn, netHandlerPlayClient, statisticsManager, recipeBook);
         MinecraftForge.EVENT_BUS.register(eventHandler);
         if (ReplayModReplay.instance.getReplayHandler().getSpectatedUUID() == null) {
             cameraController = ReplayModReplay.instance.createCameraController(this);
@@ -252,6 +253,15 @@ 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();

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

@@ -132,7 +132,7 @@ public class ClassicCameraController implements CameraController {
         Vec3d movement = direction.normalize();
         double factor = motion * (frac / 1000D);
 
-        camera.moveCamera(movement.xCoord * factor, movement.yCoord * factor, movement.zCoord * factor);
+        camera.moveCamera(movement.x * factor, movement.y * factor, movement.z * factor);
     }
 
     private void setMovement(MoveDirection dir) {

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 xField = newGuiNumberField().setPrecision(10);
-    public final GuiNumberField yField = new GuiNumberField().setSize(150, 20).setPrecision(10);
+    public final GuiNumberField yField = newGuiNumberField().setPrecision(10);
-    public final GuiNumberField zField = new GuiNumberField().setSize(150, 20).setPrecision(10);
+    public final GuiNumberField zField = newGuiNumberField().setPrecision(10);
 
-    public final GuiNumberField yawField = new GuiNumberField().setSize(150, 20).setPrecision(5);
+    public final GuiNumberField yawField = newGuiNumberField().setPrecision(5);
-    public final GuiNumberField pitchField = new GuiNumberField().setSize(150, 20).setPrecision(5);
+    public final GuiNumberField pitchField = newGuiNumberField().setPrecision(5);
-    public final GuiNumberField rollField = new GuiNumberField().setSize(150, 20).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/screen/GuiReplayViewer.java

@@ -34,7 +34,7 @@ import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.io.IOCase;
 import org.apache.commons.io.filefilter.SuffixFileFilter;
 import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.core.helpers.Strings;
+import org.apache.logging.log4j.util.Strings;
 import org.lwjgl.Sys;
 import org.lwjgl.util.Dimension;
 import org.lwjgl.util.ReadableDimension;

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

@@ -13,11 +13,11 @@ 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;
-    private static final int BUTTON_RETURN_TO_GAME = 4;
+    private static final int BUTTON_ADVANCEMENTS = 5;
-    private static final int BUTTON_ACHIEVEMENTS = 5;
     private static final int BUTTON_STATS = 6;
     private static final int BUTTON_OPEN_TO_LAN = 7;
 
@@ -46,24 +46,50 @@ public class GuiHandler {
             // Pause replay when menu is opened
             mod.getReplayHandler().getReplaySender().setReplaySpeed(0);
 
-            for(GuiButton b : new ArrayList<>(event.getButtonList())) {
+            GuiButton achievements = null, stats = null, openToLan = null;
+            List<GuiButton> buttonList = event.getButtonList();
+            for(GuiButton b : new ArrayList<>(buttonList)) {
                 switch (b.id) {
                     // Replace "Exit Server" button with "Exit Replay" button
                     case BUTTON_EXIT_SERVER:
                         b.displayString = I18n.format("replaymod.gui.exit");
                         b.id = BUTTON_EXIT_REPLAY;
                         break;
-                    // Remove "Achievements", "Stats" and "Open to LAN" buttons
+                    // Remove "Advancements", "Stats" and "Open to LAN" buttons
-                    case BUTTON_ACHIEVEMENTS:
+                    case BUTTON_ADVANCEMENTS:
+                        buttonList.remove(achievements = b);
+                        break;
                     case BUTTON_STATS:
+                        buttonList.remove(stats = b);
+                        break;
                     case BUTTON_OPEN_TO_LAN:
-                        event.getButtonList().remove(b);
+                        buttonList.remove(openToLan = b);
-                }
+                        break;
-                // Move all buttons except the "Return to game" button upwards
-                if (b.id != BUTTON_RETURN_TO_GAME) {
-                    b.yPosition -= 48;
                 }
             }
+            if (achievements != null && stats != null) {
+                moveAllButtonsDirectlyBelowUpwards(buttonList, achievements.y,
+                        achievements.x, stats.x + stats.width);
+            }
+            if (openToLan != null) {
+                moveAllButtonsDirectlyBelowUpwards(buttonList, openToLan.y,
+                        openToLan.x, openToLan.x + openToLan.width);
+            }
+        }
+    }
+
+    /**
+     * Moves all buttons that are within a rectangle below a certain y coordinate upwards by 24 units.
+     * @param buttons List of buttons
+     * @param belowY The Y limit
+     * @param xStart Left x limit of the rectangle
+     * @param xEnd Right x limit of the rectangle
+     */
+    private void moveAllButtonsDirectlyBelowUpwards(List<GuiButton> buttons, int belowY, int xStart, int xEnd) {
+        for (GuiButton button : buttons) {
+            if (button.y >= belowY && button.x <= xEnd && button.x + button.width >= xStart) {
+                button.y -= 24;
+            }
         }
     }
 

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

@@ -6,6 +6,7 @@ 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.RecipeBook;
 import net.minecraft.stats.StatisticsManager;
 import net.minecraft.world.World;
 import org.spongepowered.asm.mixin.Mixin;
@@ -23,10 +24,10 @@ public abstract class MixinPlayerControllerMP {
     @Shadow
     private NetHandlerPlayClient connection;
 
-    @Inject(method = "createClientPlayer", at=@At("HEAD"), cancellable = true)
+    @Inject(method = "func_192830_a", at=@At("HEAD"), cancellable = true)
-    private void replayModReplay_createReplayCamera(World worldIn, StatisticsManager statisticsManager, CallbackInfoReturnable<EntityPlayerSP> ci) {
+    private void replayModReplay_createReplayCamera(World worldIn, StatisticsManager statisticsManager, RecipeBook recipeBook, CallbackInfoReturnable<EntityPlayerSP> ci) {
         if (ReplayModReplay.instance.getReplayHandler() != null) {
-            ci.setReturnValue(new CameraEntity(mc, worldIn, connection, statisticsManager));
+            ci.setReturnValue(new CameraEntity(mc, worldIn, connection, statisticsManager, recipeBook));
             ci.cancel();
         }
     }

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

@@ -1,38 +1,31 @@
 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 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 org.lwjgl.input.Keyboard;
-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";
 
+    @Mod.Instance(MOD_ID)
+    public static ReplayModSimplePathing instance;
+
     private ReplayMod core;
 
     public static Logger LOGGER;
@@ -50,88 +43,77 @@ public class ReplayModSimplePathing implements PathingRegistry {
 
         PathPreview pathPreview = new PathPreview(this);
         pathPreview.register();
+
+        core.getKeyBindingRegistry().registerKeyBinding("replaymod.input.keyframerepository", Keyboard.KEY_X, () -> {
+            if (guiPathing != null) guiPathing.keyframeRepoButtonPressed();
+        });
+        core.getKeyBindingRegistry().registerKeyBinding("replaymod.input.clearkeyframes", Keyboard.KEY_C, () -> {
+            if (guiPathing != null) guiPathing.clearKeyframesButtonPressed();
+        });
+        core.getKeyBindingRegistry().registerRepeatedKeyBinding("replaymod.input.synctimeline", Keyboard.KEY_V, () -> {
+            if (guiPathing != null) guiPathing.syncTimeButtonPressed();
+        });
+        core.getKeyBindingRegistry().registerRaw(Keyboard.KEY_DELETE, () -> {
+            if (guiPathing != null) guiPathing.deleteButtonPressed();
+        });
     }
 
     @SubscribeEvent
     public void postReplayOpen(ReplayOpenEvent.Post event) {
+        clearCurrentTimeline();
         guiPathing = new GuiPathing(core, this, event.getReplayHandler());
     }
 
     @SubscribeEvent
     public void onReplayClose(ReplayCloseEvent.Post event) {
+        currentTimeline = null;
         guiPathing = null;
-        currentTimeline = createTimeline();
+        selectedPath = null;
-        currentTimeline.createPath();
-        currentTimeline.createPath();
-        selectedKeyframe = 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 SPTimeline currentTimeline;
-    private Keyframe selectedKeyframe;
 
-    public Keyframe getSelectedKeyframe() {
+    @Getter
-        return selectedKeyframe;
+    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) {
+    public void setSelected(SPPath path, long time) {
-        this.selectedKeyframe = selected;
+        selectedPath = path;
+        selectedTime = time;
     }
 
-    public void setCurrentTimeline(Timeline currentTimeline) {
+    public void setCurrentTimeline(SPTimeline newTimeline) {
-        if (this.currentTimeline != currentTimeline) {
+        selectedPath = null;
-            selectedKeyframe = null;
+        currentTimeline = newTimeline;
-        }
+        updateDefaultInterpolatorType();
-        this.currentTimeline = currentTimeline;
     }
 
-    public Timeline getCurrentTimeline() {
+    public void clearCurrentTimeline() {
+        setCurrentTimeline(new SPTimeline());
+    }
+
+    public SPTimeline getCurrentTimeline() {
         return currentTimeline;
     }
 
-    @Override
+    private void updateDefaultInterpolatorType() {
-    public Timeline createTimeline() {
+        InterpolatorType newDefaultType =
-        Timeline timeline = new TimelineImpl();
+                InterpolatorType.fromString(core.getSettingsRegistry().get(Setting.DEFAULT_INTERPOLATION));
-
+        currentTimeline.setDefaultInterpolatorType(newDefaultType);
-        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);
-
-        }
     }
 
     public ReplayMod getCore() {

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

@@ -0,0 +1,680 @@
+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;
+
+    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 that will be lost once we remove the old keyframe and has to be restored afterwards
+        Optional<Interpolator> lostInterpolator = path.getSegments().stream().filter(s -> {
+            // If this is the last keyframe,
+            if (Iterables.getLast(path.getKeyframes()) == keyframe) {
+                return s.getEndKeyframe() == keyframe; // the previous interpolator will be lost
+            } else { // otherwise
+                return s.getStartKeyframe() == keyframe; // the following interpolator will be lost
+            }
+        }).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 = lostInterpolator.<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 = path.getSegments().stream().filter(s -> s.getEndKeyframe() == newKf)
+                    .findFirst().flatMap(segment -> lostInterpolator.map(interpolator -> {
+                        // additionally, if the interpolation of this keyframe was set to explicit, that property
+                        // has to be transferred to the start keyframe of the new segment
+                        if (newKf.getValue(ExplicitInterpolationProperty.PROPERTY).isPresent()) {
+                            return CombinedChange.create(
+                                    SetInterpolator.create(segment, interpolator),
+                                    UpdateKeyframeProperties.create(path, segment.getStartKeyframe())
+                                            .setValue(ExplicitInterpolationProperty.PROPERTY, ObjectUtils.NULL).done()
+                            );
+                        } else {
+                            return 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.addDetail("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.guiPathing = gui;
-        this.path = path;
+        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 +106,14 @@ 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()) {
+            if (newTime != time) {
-                change = CombinedChange.createFromApplied(change, gui.moveKeyframe(path, keyframe, newTime));
+                change = CombinedChange.createFromApplied(change,
+                        gui.getMod().getCurrentTimeline().moveKeyframe(path, time, newTime));
+                if (gui.getMod().getSelectedPath() == path && gui.getMod().getSelectedTime() == time) {
+                    gui.getMod().setSelected(path, newTime);
+                }
             }
-            path.getTimeline().pushChange(change);
+            gui.getMod().getCurrentTimeline().getTimeline().pushChange(change);
             close();
         });
     }
@@ -114,7 +143,7 @@ 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 +176,10 @@ 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 +194,7 @@ 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)
+            return guiPathing.getMod().getCurrentTimeline().updateTimeKeyframe(keyframe.getTime(), time);
-                    .setValue(TimestampProperty.PROPERTY, time)
-                    .done();
-            change.apply(path.getTimeline());
-            return change;
         }
 
         @Override
@@ -187,8 +212,11 @@ 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 +224,20 @@ 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 +250,181 @@ public abstract class GuiEditKeyframe<T extends GuiEditKeyframe<T>> extends Abst
 
         @Override
         protected Change save() {
-            Change change = UpdateKeyframeProperties.create(path, keyframe)
+            SPTimeline timeline = guiPathing.getMod().getCurrentTimeline();
-                    .setValue(CameraProperties.POSITION, Triple.of(xField.getDouble(), yField.getDouble(), zField.getDouble()))
+            Change positionChange = timeline.updatePositionKeyframe(time,
-                    .setValue(CameraProperties.ROTATION, Triple.of(yawField.getFloat(), pitchField.getFloat(), rollField.getFloat()))
+                    xField.getDouble(), yField.getDouble(), zField.getDouble(),
-                    .done();
+                    yawField.getFloat(), pitchField.getFloat(), rollField.getFloat()
-            change.apply(path.getTimeline());
+            );
-            return change;
+            if (interpolationPanel.getSettingsPanel() == null) {
+                // The last keyframe doesn't have interpolator settings because there is no segment following it
+                return positionChange;
+            }
+            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);
+                        type = 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>>() {
+        SPTimeline timeline = mod.getCurrentTimeline();
-            @Nullable
+
-            @Override
+        timeline.getTimeline().getPaths().stream().flatMap(path -> path.getKeyframes().stream()).forEach(keyframe -> {
-            public Iterable<Keyframe> apply(@Nullable Path input) {
-                assert input != null;
-                return input.getKeyframes();
-            }
-        }))) {
             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();
+                SPPath path;
-                int 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;
+                int tolerance = visibleTime * KEYFRAME_SIZE / (getLastSize().getWidth() - BORDER_LEFT - BORDER_RIGHT) / 2;
-                Optional<Keyframe> keyframe = timeline.getPaths().get(path).getKeyframes().stream()
+                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, keyframeTime);
-                        gui.openEditKeyframePopup(path, keyframe);
                         return true;
                     }
                 }
                 // Not a double click, just update the click time and selection
                 lastClickedTime = now;
-                lastClickedKeyframe = keyframe;
+                lastClickedKeyframe = keyframeTime;
-                lastClickedPath = pathKeyframePair.getLeft();
+                lastClickedPath = path;
-                gui.getMod().setSelectedKeyframe(lastClickedKeyframe);
+                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 = gui.getMod().getCurrentTimeline().getPath(pathKeyframePair.getLeft());
-                    Path path = timeline.getPaths().get(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));
+            gui.getMod().setSelected(lastClickedPath, newTime);
-
-            // Path has been changed
-            path.updateAll();
         }
         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

@@ -1,10 +1,12 @@
 package com.replaymod.simplepathing.gui;
 
+import com.google.common.base.Preconditions;
 import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
 import com.google.common.util.concurrent.SettableFuture;
 import com.replaymod.core.ReplayMod;
+import com.replaymod.core.utils.Utils;
 import com.replaymod.pathing.gui.GuiKeyframeRepository;
 import com.replaymod.pathing.player.RealtimeTimelinePlayer;
 import com.replaymod.pathing.properties.CameraProperties;
@@ -14,25 +16,26 @@ 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 +46,7 @@ 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 +58,7 @@ 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 +69,6 @@ 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 +94,11 @@ 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);
+                TimelineSerialization serialization = new TimelineSerialization(spTimeline, null);
-                String serialized = serialization.serialize(Collections.singletonMap("", timeline));
+                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"), () -> {});
@@ -261,6 +257,7 @@ public class GuiPathing {
         }
     };
 
+    private final ReplayMod core;
     private final ReplayModSimplePathing mod;
     private final ReplayHandler replayHandler;
     private final RealtimeTimelinePlayer player;
@@ -270,6 +267,7 @@ public class GuiPathing {
     private SettableFuture<Void> entityTrackerFuture;
 
     public GuiPathing(final ReplayMod core, final ReplayModSimplePathing mod, final ReplayHandler replayHandler) {
+        this.core = core;
         this.mod = mod;
         this.replayHandler = replayHandler;
         this.player = new RealtimeTimelinePlayer(replayHandler);
@@ -296,27 +294,34 @@ public class GuiPathing {
                 if (player.isActive()) {
                     player.getFuture().cancel(false);
                 } else {
-                    Timeline timeline = mod.getCurrentTimeline();
+                    Path timePath = mod.getCurrentTimeline().getTimePath();
-                    Path timePath = timeline.getPaths().get(TIME_PATH);
 
                     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);
+                    core.printInfoToChat("replaymod.chat.pathstarted");
                     Futures.addCallback(future, new FutureCallback<Void>() {
                         @Override
                         public void onSuccess(@Nullable Void result) {
+                            if (future.isCancelled()) {
+                                core.printInfoToChat("replaymod.chat.pathinterrupted");
+                            } else {
+                                core.printInfoToChat("replaymod.chat.pathfinished");
+                            }
                             overlay.setCloseable(true);
+                            timePath.setActive(true);
                         }
 
                         @Override
                         public void onFailure(Throwable t) {
                             t.printStackTrace();
                             overlay.setCloseable(true);
+                            timePath.setActive(true);
                         }
                     });
                 }
@@ -326,26 +331,28 @@ public class GuiPathing {
         positionKeyframeButton.setTexturePosH(new ReadablePoint() {
             @Override
             public int getX() {
-                Keyframe keyframe = mod.getSelectedKeyframe();
+                SPPath keyframePath = mod.getSelectedPath();
-                if (keyframe == null || !keyframe.getValue(CameraProperties.POSITION).isPresent()) {
+                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();
+                SPPath keyframePath = mod.getSelectedPath();
-                if (keyframe == null || !keyframe.getValue(CameraProperties.POSITION).isPresent()) {
+                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 +362,7 @@ public class GuiPathing {
         }).onClick(new Runnable() {
             @Override
             public void run() {
-                updateKeyframe(false);
+                updateKeyframe(SPPath.POSITION);
             }
         });
 
@@ -367,12 +374,12 @@ public class GuiPathing {
 
             @Override
             public int getY() {
-                Keyframe keyframe = mod.getSelectedKeyframe();
+                SPPath keyframePath = mod.getSelectedPath();
-                if (keyframe == null || !keyframe.getValue(TimestampProperty.PROPERTY).isPresent()) {
+                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 +389,7 @@ public class GuiPathing {
         }).onClick(new Runnable() {
             @Override
             public void run() {
-                updateKeyframe(true);
+                updateKeyframe(SPPath.TIME);
             }
         });
 
@@ -396,94 +403,90 @@ public class GuiPathing {
             }
         });
 
-        core.getKeyBindingRegistry().registerKeyBinding("replaymod.input.keyframerepository", Keyboard.KEY_X, new Runnable() {
+        startLoadingEntityTracker();
-            @Override
+    }
-            public void run() {
-                if (!overlay.isVisible()) {
-                    return;
-                }
-                try {
-                    GuiKeyframeRepository gui = new GuiKeyframeRepository(
-                            mod, replayHandler.getReplayFile(), mod.getCurrentTimeline());
-                    Futures.addCallback(gui.getFuture(), new FutureCallback<Timeline>() {
-                        @Override
-                        public void onSuccess(Timeline result) {
-                            if (result != null) {
-                                mod.setCurrentTimeline(result);
-                            }
-                        }
 
-                        @Override
+    public void keyframeRepoButtonPressed() {
-                        public void onFailure(Throwable t) {
+        try {
-                            t.printStackTrace();
+            GuiKeyframeRepository gui = new GuiKeyframeRepository(
-                            core.printWarningToChat("Error loading timeline: " + t.getMessage());
+                    mod.getCurrentTimeline(), replayHandler.getReplayFile(), mod.getCurrentTimeline().getTimeline());
-                        }
+            Futures.addCallback(gui.getFuture(), new FutureCallback<Timeline>() {
-                    });
-                    gui.display();
-                } catch (IOException e) {
-                    e.printStackTrace();
-                    core.printWarningToChat("Error loading timeline: " + e.getMessage());
-                }
-            }
-        });
-
-        core.getKeyBindingRegistry().registerKeyBinding("replaymod.input.clearkeyframes", Keyboard.KEY_C, () -> {
-            GuiYesNoPopup popup = GuiYesNoPopup.open(overlay,
-                    new GuiLabel().setI18nText("replaymod.gui.clearcallback.title").setColor(Colors.BLACK)
-            ).setYesI18nLabel("gui.yes").setNoI18nLabel("gui.no");
-            Futures.addCallback(popup.getFuture(), new FutureCallback<Boolean>() {
                 @Override
-                public void onSuccess(Boolean delete) {
+                public void onSuccess(Timeline result) {
-                    if (delete) {
+                    if (result != null) {
-                        Timeline timeline = mod.createTimeline();
+                        mod.setCurrentTimeline(new SPTimeline(result));
-                        timeline.createPath();
-                        timeline.createPath();
-                        mod.setCurrentTimeline(timeline);
                     }
                 }
 
                 @Override
                 public void onFailure(Throwable t) {
                     t.printStackTrace();
+                    core.printWarningToChat("Error loading timeline: " + t.getMessage());
                 }
             });
-        });
+            gui.display();
+        } catch (IOException e) {
+            e.printStackTrace();
+            core.printWarningToChat("Error loading timeline: " + e.getMessage());
+        }
+    }
 
-        core.getKeyBindingRegistry().registerRepeatedKeyBinding("replaymod.input.synctimeline", Keyboard.KEY_V, () -> {
+    public void clearKeyframesButtonPressed() {
-            // Current replay time
+        GuiYesNoPopup popup = GuiYesNoPopup.open(replayHandler.getOverlay(),
-            int time = replayHandler.getReplaySender().currentTimeStamp();
+                new GuiLabel().setI18nText("replaymod.gui.clearcallback.title").setColor(Colors.BLACK)
-            // Position of the cursor
+        ).setYesI18nLabel("gui.yes").setNoI18nLabel("gui.no");
-            int cursor = timeline.getCursorPosition();
+        Futures.addCallback(popup.getFuture(), new FutureCallback<Boolean>() {
-            // Get the last time keyframe before the cursor
+            @Override
-            mod.getCurrentTimeline().getPaths().get(TIME_PATH).getKeyframes().stream()
+            public void onSuccess(Boolean delete) {
-                    .filter(it -> it.getTime() <= cursor).reduce((__, last) -> last).ifPresent(keyframe -> {
+                if (delete) {
-                // Cursor position at the keyframe
+                    mod.clearCurrentTimeline();
-                int keyframeCursor = (int) keyframe.getTime();
+                    if (entityTracker != null) {
-                // Replay time at the keyframe
+                        mod.getCurrentTimeline().setEntityTracker(entityTracker);
-                // This is a keyframe from the time path, so it _should_ always have a time property
+                    }
-                int keyframeTime = keyframe.getValue(TimestampProperty.PROPERTY).get();
+                }
-                // Replay time passed
-                int timePassed = time - keyframeTime;
-                // Speed (set to 1 when shift is held)
-                double speed = Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) ? 1 : overlay.getSpeedSliderValue();
-                // Cursor time passed
-                int cursorPassed = (int) (timePassed / speed);
-                // 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);
-            });
-        });
-
-        core.getKeyBindingRegistry().registerRaw(Keyboard.KEY_DELETE, () -> {
-            if (!overlay.isVisible()) {
-                return;
             }
-            if (mod.getSelectedKeyframe() != null) {
+
-                updateKeyframe(mod.getSelectedKeyframe().getValue(TimestampProperty.PROPERTY).isPresent());
+            @Override
+            public void onFailure(Throwable t) {
+                t.printStackTrace();
             }
         });
+    }
 
+    public void syncTimeButtonPressed() {
+        // Current replay time
+        int time = replayHandler.getReplaySender().currentTimeStamp();
+        // Position of the cursor
+        int cursor = timeline.getCursorPosition();
+        // Get the last time keyframe before the cursor
+        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();
+            // Replay time at the keyframe
+            // This is a keyframe from the time path, so it _should_ always have a time property
+            int keyframeTime = keyframe.getValue(TimestampProperty.PROPERTY).get();
+            // Replay time passed
+            int timePassed = time - keyframeTime;
+            // Speed (set to 1 when shift is held)
+            double speed = Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) ? 1 : replayHandler.getOverlay().getSpeedSliderValue();
+            // Cursor time passed
+            int cursorPassed = (int) (timePassed / speed);
+            // Move cursor to new position
+            timeline.setCursorPosition(keyframeCursor + cursorPassed);
+            // Deselect keyframe to allow the user to add a new one right away
+            mod.setSelected(null, 0);
+        });
+    }
+
+    public void deleteButtonPressed() {
+        if (mod.getSelectedPath() != null) {
+            updateKeyframe(mod.getSelectedPath());
+        }
+    }
+
+    private void startLoadingEntityTracker() {
+        Preconditions.checkState(entityTrackerFuture == null);
         // Start loading entity tracker
         entityTrackerFuture = SettableFuture.create();
         new Thread(() -> {
@@ -496,12 +499,13 @@ public class GuiPathing {
                     }
                 });
                 logger.info("Loaded entity tracker in " + (System.currentTimeMillis() - start) + "ms");
-            } catch (IOException e) {
+            } catch (Throwable e) {
                 logger.error("Loading entity tracker:", e);
                 mod.getCore().runLater(() -> {
                     mod.getCore().printWarningToChat("Error loading entity tracker: %s", e.getLocalizedMessage());
                     entityTrackerFuture.setException(e);
                 });
+                return;
             }
             entityTracker = tracker;
             mod.getCore().runLater(() -> {
@@ -511,13 +515,12 @@ public class GuiPathing {
     }
 
     private boolean preparePathsForPlayback() {
-        Timeline timeline = mod.getCurrentTimeline();
+        SPTimeline timeline = mod.getCurrentTimeline();
-        timeline.getPaths().get(TIME_PATH).updateAll();
+        timeline.getTimeline().getPaths().forEach(Path::updateAll);
-        timeline.getPaths().get(POSITION_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 +534,8 @@ public class GuiPathing {
         }
 
         // Make sure there are at least two position- and two time-keyframes
-        if (timeline.getPaths().get(POSITION_PATH).getSegments().isEmpty()
+        if (timeline.getPositionPath().getSegments().isEmpty()
-                || timeline.getPaths().get(TIME_PATH).getSegments().isEmpty()) {
+                || timeline.getTimePath().getSegments().isEmpty()) {
             GuiInfoPopup.open(replayHandler.getOverlay(), "replaymod.chat.morekeyframes");
             return false;
         }
@@ -544,204 +547,85 @@ public class GuiPathing {
         scrollbar.setZoom(scrollbar.getZoom() * factor);
     }
 
-    /**
+    public boolean ensureEntityTracker(Runnable withDelayedTracker) {
-     * 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) {
         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
                 public void onFailure(@Nonnull Throwable t) {
-                    popup.close();
+                    String message = "Failed to load entity tracker, pathing will be unavailable.";
+                    GuiReplayOverlay overlay = replayHandler.getOverlay();
+                    Utils.error(LOGGER, overlay, CrashReport.makeCrashReport(t, message), 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();
+        SPTimeline timeline = mod.getCurrentTimeline();
-        Path path = timeline.getPaths().get(isTime ? TIME_PATH : POSITION_PATH);
 
-        Keyframe keyframe = mod.getSelectedKeyframe();
+        switch (path) {
-        if (keyframe != null && keyframe.getValue(TimestampProperty.PROPERTY).isPresent() ^ isTime) {
+            case TIME:
-            // Keyframe is on the wrong timeline
+                if (mod.getSelectedPath() == path) {
-            keyframe = null;
+                    LOGGER.debug("Selected keyframe is time keyframe -> removing keyframe");
-        }
+                    timeline.removeTimeKeyframe(mod.getSelectedTime());
-        if (keyframe == null) {
+                    mod.setSelected(null, 0);
-            // No keyframe selected but there may still be one at this exact time
+                } else if (timeline.isTimeKeyframe(time)) {
-            keyframe = path.getKeyframe(time);
+                    LOGGER.debug("Keyframe at cursor position is time keyframe -> removing keyframe");
-        }
+                    timeline.removeTimeKeyframe(time);
-        Change change;
+                    mod.setSelected(null, 0);
-        if (keyframe == null) {
+                } else {
-            change = AddKeyframe.create(path, time);
+                    LOGGER.debug("No time keyframe found -> adding new keyframe");
-            change.apply(timeline);
+                    timeline.addTimeKeyframe(time, replayHandler.getReplaySender().currentTimeStamp());
-            keyframe = path.getKeyframe(time);
+                    mod.setSelected(path, 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());
                 }
-            }
+                break;
-            UpdateKeyframeProperties updateChange = builder.done();
+            case POSITION:
-            updateChange.apply(timeline);
+                if (mod.getSelectedPath() == path) {
-            change = CombinedChange.createFromApplied(change, updateChange);
+                    LOGGER.debug("Selected keyframe is position keyframe -> removing keyframe");
-
+                    timeline.removePositionKeyframe(mod.getSelectedTime());
-            // If this new keyframe formed the first segment of the time path
+                    mod.setSelected(null, 0);
-            if (isTime && path.getSegments().size() == 1) {
+                } else if (timeline.isPositionKeyframe(time)) {
-                PathSegment segment = path.getSegments().iterator().next();
+                    LOGGER.debug("Keyframe at cursor position is position keyframe -> removing keyframe");
-                Interpolator interpolator = new LinearInterpolator();
+                    timeline.removePositionKeyframe(time);
-                interpolator.registerProperty(TimestampProperty.PROPERTY);
+                    mod.setSelected(null, 0);
-                SetInterpolator setInterpolator = SetInterpolator.create(segment, interpolator);
+                } else {
-                setInterpolator.apply(timeline);
+                    LOGGER.debug("No position keyframe found -> adding new keyframe");
-                change = CombinedChange.createFromApplied(change, setInterpolator);
+                    CameraEntity camera = replayHandler.getCameraEntity();
-            }
+                    int spectatedId = -1;
-        }
+                    if (!replayHandler.isCameraView()) {
-
+                        spectatedId = replayHandler.getOverlay().getMinecraft().getRenderViewEntity().getEntityId();
-        // Update interpolators for spectator keyframes
+                    }
-        // while this is overkill, it is far simpler than updating differently for every possible case
+                    timeline.addPositionKeyframe(time, camera.posX, camera.posY, camera.posZ,
-        if (!isTime) {
+                            camera.rotationYaw, camera.rotationPitch, camera.roll, spectatedId);
-            Change interpolators = updateInterpolators();
+                    mod.setSelected(path, time);
-            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);
                 }
-                changes.add(SetInterpolator.create(segment, interpolator));
+                break;
-            } 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));
-            }
         }
-        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 +636,15 @@ 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/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.BufferBuilder;
 import net.minecraft.client.renderer.GlStateManager;
 import net.minecraft.client.renderer.Tessellator;
-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
+                // Spectator segments have 20 lines per second (at least 10) whereas normal segments have a fixed 100
-                long steps = spectator ? diff / 50 : 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();
-        VertexBuffer vertexBuffer = tessellator.getBuffer();
+        BufferBuilder 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();
-        VertexBuffer vertexBuffer = tessellator.getBuffer();
+        BufferBuilder 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();
-        VertexBuffer vertexBuffer = tessellator.getBuffer();
+        BufferBuilder 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/assets/replaymod/lang/en_US.lang

@@ -1,526 +0,0 @@
-replaymod.title=Replay Mod
-
-#Website API translations
-replaymod.api.parammissing=Required parameter missing: %1$s
-replaymod.api.invalidvalue=Invalid value passed for parameter %1$s - Possible values: %2$s
-replaymod.api.invalidlogin=Invalid login data provided
-replaymod.api.invalidauthkey=Invalid authentication key provided
-replaymod.api.notenoughspace=Not enough space left to upload this file. Consider purchasing Premium on ReplayMod.com
-replaymod.api.invalidfile=This file is invalid
-replaymod.api.fileduplicate=This file has already been uploaded
-replaymod.api.filenoexist=This file does not exist
-replaymod.api.nopermissions=You don't have permission to access this file
-replaymod.api.alreadyrated=You already rated this file
-replaymod.api.usernoexist=This user does not exist
-replaymod.api.invalidcategory=Invalid file category
-replaymod.api.nofilesuploaded=No files uploaded
-replaymod.api.toomanyvalues=Too many values passed for %1$s
-replaymod.api.noparameters=At least one parameter required. Parameters: %1$s
-replaymod.api.invalidfilename=File name must be between 5 and 30 characters long
-replaymod.api.unknownlang=This language has not been translated
-replaymod.api.zippingerror=An error occured while zipping the language files
-replaymod.api.usernameexists=This username is already taken
-replaymod.api.mailexists=This Email address is already linked to an account
-replaymod.api.invalidmail=Invalid Email Address
-replaymod.api.nopermissions=You don't have permission to do this
-replaymod.api.authfailed=Authentication to the Minecraft Session Servers failed
-replaymod.api.mcuserexists=A ReplayMod account is already associated with this Minecraft account
-replaymod.api.filetoobig=The uploaded file is too big
-replaymod.api.usernametoolong=The username is too long
-replaymod.api.descriptiontoolong=The description is too long
-replaymod.api.passwordlength=The password has to be between 5 and 1024 characters long
-replaymod.api.suspended=Your account has been suspended
-
-#All of the chat messages
-replaymod.chat.recordingstarted=Recording started
-replaymod.chat.recordingfailed=Failed to start recording
-
-replaymod.chat.savingthumb=Saving Thumbnail...
-replaymod.chat.savedthumb=Thumbnail has been successfully saved
-replaymod.chat.failedthumb=Thumbnail could not be saved
-
-replaymod.chat.addedmarker=Event Marker has been added
-
-#Chat messages displayed in Replay Viewer
-replaymod.chat.morekeyframes=At least 2 position keyframes and 2 time keyframes required
-replaymod.chat.negativetime=Camera Paths can't play time backwards. Please consult your nearest time lord for assistance.
-replaymod.chat.pathstarted=Camera Path started
-replaymod.chat.pathfinished=Camera Path finished
-replaymod.chat.pathinterrupted=Camera Path canceled
-
-#Replay Categories
-replaymod.category=Category
-replaymod.category.survival=Survival
-replaymod.category.minigame=Minigame
-replaymod.category.build=Build
-replaymod.category.misc=Miscellaneous
-
-#Common GUI-related strings
-replaymod.gui.replay=Replay
-replaymod.gui.login=Login
-replaymod.gui.logout=Logout
-replaymod.gui.cancel=Cancel
-replaymod.gui.username=Username
-replaymod.gui.password=Password
-replaymod.gui.back=Back
-replaymod.gui.duration=Duration
-replaymod.gui.load=Load
-replaymod.gui.download=Download
-replaymod.gui.like=Like
-replaymod.gui.dislike=Dislike
-replaymod.gui.removelike=Remove Like
-replaymod.gui.removedislike=Remove Dislike
-replaymod.gui.save=Save
-replaymod.gui.upload=Upload
-replaymod.gui.rename=Rename
-replaymod.gui.remove=Remove
-replaymod.gui.add=Add
-replaymod.gui.start=Start
-replaymod.gui.end=End
-replaymod.gui.delete=Delete
-replaymod.gui.recording=Recording
-replaymod.gui.speed=Speed
-replaymod.gui.register=Register
-replaymod.gui.mail=Email Address
-replaymod.gui.loading=Loading
-replaymod.gui.pleasewait=Please wait
-replaymod.gui.render=Render
-replaymod.gui.iphidden=Server IP Hidden
-replaymod.gui.overwrite=Overwrite
-replaymod.gui.saveas=Save as ...
-replaymod.gui.done=Done
-replaymod.gui.close=Close
-replaymod.gui.notagain=Don't show again
-
-replaymod.gui.renderdonetitle=Video rendered
-replaymod.gui.openfolder=Open Video Folder
-replaymod.gui.youtubeupload=Upload to YouTube
-replaymod.gui.renderdone1=Your video was successfully rendered.
-replaymod.gui.renderdone2=How would you like to proceed?
-replaymod.gui.videotitle=Title
-replaymod.gui.videodescription=Description
-replaymod.gui.videotags=Tags,Tags,Tags
-replaymod.gui.videothumbnail=Video Thumbnail
-replaymod.gui.videovisibility.private=Private
-replaymod.gui.videovisibility.unlisted=Unlisted
-replaymod.gui.videovisibility.public=Public
-replaymod.gui.ytuploadprogress.auth=[1/4] Authorization
-replaymod.gui.ytuploadprogress.prepare_video=[2/4] Preparing video: %%d%%%%
-replaymod.gui.ytuploadprogress.upload=[3/4] Uploading: %%d%%%%
-replaymod.gui.ytuploadprogress.cleanup=[4/4] Cleanup
-replaymod.gui.ytuploadprogress.done=Done: %s
-replaymod.gui.titleempty=Title cannot be empty
-replaymod.gui.videothumbnailtoolarge=Thumbnail size exceeds 2MB
-replaymod.gui.videothumbnailformat=Thumbnail has to be either JPEG or PNG format
-
-replaymod.gui.original=Original
-replaymod.gui.modified=Modified
-
-replaymod.gui.outdated=There is a newer Replay Mod version available. Please download it from replaymod.com
-
-replaymod.gui.hours=h
-replaymod.gui.minutes=min
-replaymod.gui.seconds=sec
-replaymod.gui.milliseconds=ms
-
-replaymod.gui.pitch=Pitch
-replaymod.gui.yaw=Yaw
-replaymod.gui.roll=Roll
-
-replaymod.gui.camera=Camera
-replaymod.gui.position=Position
-
-replaymod.gui.unknownerror=An unknown error occured
-
-replaymod.gui.exit=Exit Replay
-replaymod.gui.java=Java 1.7 or newer required
-replaymod.gui.morereplays=At least one Replay required
-
-replaymod.gui.loggedin=LOGGED IN
-replaymod.gui.loggedout=LOGGED OUT
-
-replaymod.gui.mainmenu=Main Menu
-replaymod.gui.settings=Settings
-
-replaymod.gui.keyframerepo.delete=Are you sure you want to delete these keyframes?
-
-replaymod.gui.restorereplay1=It seems like Minecraft has not quit normally.
-replaymod.gui.restorereplay2=The Replay "%1$s" was not saved correctly.
-replaymod.gui.restorereplay3=Do you wish to recover it?
-
-replaymod.gui.loadentitytracker=Loading entity positions: %%d%%%%
-
-#Only change these if it's neccessary
-replaymod.gui.replayviewer=Replay Viewer
-replaymod.gui.replaycenter=Replay Center
-replaymod.gui.replaysettings=Replay Settings
-replaymod.gui.replayeditor=Replay Editor
-
-#Login GUI
-replaymod.gui.login.title=Login to ReplayMod.com
-replaymod.gui.login.logging=Logging in...
-replaymod.gui.login.incorrect=Incorrect username or password
-replaymod.gui.login.connectionerror=Could not connect to ReplayMod.com
-
-replaymod.gui.login.skip=Skip
-
-replaymod.gui.register.title=Register on ReplayMod.com
-replaymod.gui.register.confirmpw=Confirm Password
-
-replaymod.gui.register.disclaimer=By registering an account, you agree to the Replay Mod's Terms of Service: https://replaymod.com/legal/terms
-
-replaymod.gui.register.error.nomatch=Passwords don't match
-replaymod.gui.register.error.shortusername=Username has to be at least 5 characters long
-replaymod.gui.register.error.invalidname=Username may only contain letters and numbers
-replaymod.gui.register.error.shortpw=Password has to be at least 5 characters long
-replaymod.gui.register.error.longpw=Password has to be at most 1024 characters long
-replaymod.gui.register.error.authfailed=Could not authenticate your Minecraft account
-
-#Replay Viewer GUI
-replaymod.gui.viewer.rename.title=Rename Replay
-replaymod.gui.viewer.rename.name=Replay Name
-replaymod.gui.viewer.replayfolder=Open Replay Folder...
-replaymod.gui.viewer.noauth=Log in to upload a Replay
-replaymod.gui.viewer.alreadyuploaded=This Replay has already been uploaded
-
-replaymod.gui.viewer.delete.linea=Are you sure you want to delete this replay?
-replaymod.gui.viewer.delete.failed1=Your OS did not allow us to move the replay. There is
-replaymod.gui.viewer.delete.failed2=nothing we can do about this. You have to do it yourself.
-replaymod.gui.viewer.delete.lineb='%1$s' will be lost forever! (a long time!)
-
-replaymod.gui.viewer.download.title=Downloading Replay File...
-replaymod.gui.viewer.download.message=Please wait while "%1$s" is being downloaded.
-
-replaymod.gui.viewer.chooser.title=Choose Replay File
-replaymod.gui.viewer.chooser.message=You have a modified version of "%1$s" on your computer. Which Replay do you want to load?
-
-replaymod.gui.login.noacc=Don't have an account yet?
-
-#Replay Center GUI
-replaymod.gui.center.logoutcallback=Do you really want to log out?
-replaymod.gui.center.top.recent=Recent
-replaymod.gui.center.top.best=Best
-replaymod.gui.center.top.downloaded=Downloaded
-replaymod.gui.center.top.favorited=Favorited
-replaymod.gui.center.top.search=Search
-
-replaymod.gui.center.search.filters=Search Filters
-replaymod.gui.center.search.gametype=Gametype
-replaymod.gui.center.search.order=Sort by
-replaymod.gui.center.search.order.best=Best
-replaymod.gui.center.search.order.recent=Recent
-replaymod.gui.center.search.name=Replay Name
-replaymod.gui.center.search.server=Server IP (Multiplayer only)
-replaymod.gui.center.search.category=Filter by Category
-replaymod.gui.center.search.version=Filter by Version
-
-replaymod.gui.center.downloadrequired=Download the Replay to rate or favorite it
-
-replaymod.gui.center.favorite=Favorite
-replaymod.gui.center.unfavorite=Unfavorite
-replaymod.gui.center.favorites=Favorites
-
-replaymod.gui.center.author=by %1$s%2$s
-
-#Upload GUI
-replaymod.gui.upload.title=Upload File
-replaymod.gui.upload.start=Start Upload
-replaymod.gui.upload.cancel=Cancel Upload
-replaymod.gui.upload.tagshint=Tags separated by comma
-replaymod.gui.upload.namehint=Replay Title
-replaymod.gui.upload.descriptionhint=Description
-replaymod.gui.upload.duration=Duration: %02dm%02ds
-replaymod.gui.upload.uploading=Uploading...
-replaymod.gui.upload.success=File has been successfully uploaded
-replaymod.gui.upload.canceled=Upload has been canceled
-replaymod.gui.upload.hideip2=Hide Server IP (%s)
-replaymod.gui.upload.nothumbnail=Missing Thumbnail. Please create a Thumbnail in the Replay using the %1$s key.
-replaymod.gui.upload.tryagain=Try again?
-
-replaymod.gui.upload.error.name.length=The Replay Name has to be between 5 and 30 characters long
-replaymod.gui.upload.error.name=The Replay Name may not contain special characters
-replaymod.gui.upload.error.tags=Tags may only contain letters and are separated using a comma
-
-#Replay Editor
-replaymod.gui.editor.replayfile=Replay File
-
-replaymod.gui.editor.savemode.override=Replace Source File
-replaymod.gui.editor.savemode.newfile=Save to new File
-
-replaymod.gui.editor.trim.title=Trim Replay
-replaymod.gui.editor.connect.title=Connect Replays
-replaymod.gui.editor.modify.title=Modify Replay
-
-replaymod.gui.editor.trim.description=Removes the beginning and end of a Replay File, only keeping the Replay between the given timestamps
-replaymod.gui.editor.connect.description=Connects multiple Replays in the specified order
-replaymod.gui.editor.modify.description=Provides several filters to modify Replay Files
-
-replaymod.gui.editor.trim.marker=Select Event Marker
-
-replaymod.gui.editor.progress.title=Editing Replay File...
-replaymod.gui.editor.progress.pleasewait=Please wait while the Replay is being edited.
-
-replaymod.gui.editor.progress.status.initializing=Initializing
-replaymod.gui.editor.progress.status.writing.raw=Rewriting Replay...
-replaymod.gui.editor.progress.status.writing.final=Writing File to disk...
-replaymod.gui.editor.progress.status.finished=Finished Editing!
-
-replaymod.gui.editor.disclaimer=The Replay Editor is an experimental feature and may contain bugs.
-
-#Cancel Replay GUI
-replaymod.gui.cancelrender.title=Cancel Rendering
-replaymod.gui.cancelrender.message=Are you sure that you want to cancel the current rendering process?
-#Saving Replay GUI
-replaymod.gui.replaysaving.title=Saving Replay File...
-replaymod.gui.replaysaving.message=Please wait while your recent Replay is being saved.
-replaymod.gui.replaymodified.message=Replay was modified. Would you like to save the changes?
-replaymod.gui.replaymodified.yes=Save Modified Replay
-replaymod.gui.replaymodified.no=Discard Changes
-replaymod.gui.replaymodified.warning1=A Replay named "%1$s" already exists.
-replaymod.gui.replaymodified.warning2=Are you sure you want to replace it?
-
-#Player Overview GUI
-replaymod.gui.playeroverview.visible=Visible
-replaymod.gui.playeroverview.hideall=Hide all
-replaymod.gui.playeroverview.showall=Show all
-replaymod.gui.playeroverview.spectate=Spectate Player
-replaymod.gui.playeroverview.remembersettings=Remember Hidden Players
-replaymod.gui.playeroverview.remembersettings.description=Saves Player Visibility in Replay File
-
-#Replay Mod Settings GUI
-replaymod.gui.settings.title=Replay Mod Settings
-
-replaymod.gui.settings.interpolation.linear=Linear
-replaymod.gui.settings.interpolation.cubic=Cubic
-
-replaymod.gui.settings.bitrate=Video Bitrate
-replaymod.gui.settings.framerate=Video Framerate
-replaymod.gui.settings.notifications=Enable Notifications
-replaymod.gui.settings.recordserver=Record Server
-replaymod.gui.settings.recordsingleplayer=Record Singleplayer
-replaymod.gui.settings.indicator=Recording Indicator
-replaymod.gui.settings.lighting=Ambient Lighting
-replaymod.gui.settings.forcechunks=Force Render Chunks
-replaymod.gui.settings.resources=Server Resource Packs
-replaymod.gui.settings.interpolation=Path Interpolation
-replaymod.gui.settings.linearinterpolation=Linear Path Interpolation
-replaymod.gui.settings.pathpreview=Show Path Preview
-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.warning.linea=WARNING: Recording settings will be
-replaymod.gui.settings.warning.lineb=applied the next time you join a world.
-
-#Replay Mod Keybindings
-replaymod.input.lighting=Toggle Lighting
-replaymod.input.thumbnail=Capture Thumbnail
-replaymod.input.playeroverview=Player Overview
-replaymod.input.clearkeyframes=Clear Keyframes
-replaymod.input.synctimeline=Synchronize Timeline
-replaymod.input.keyframerepository=Open Keyframe Presets
-replaymod.input.rollclockwise=Roll Clockwise
-replaymod.input.rollcounterclockwise=Roll Counterclockwise
-replaymod.input.resettilt=Reset Camera Tilt
-replaymod.input.playpause=Play/Pause Replay
-replaymod.input.marker=Add Event Marker
-replaymod.input.pathpreview=Toggle Path Preview
-replaymod.input.assetmanager=Asset Manager
-replaymod.input.objectmanager=Object Manager
-replaymod.input.interpolation=Toggle Interpolation
-replaymod.input.settings=ReplayMod Settings
-
-# CameraControllers
-replaymod.camera.classic=Classic
-replaymod.camera.vanilla=Vanilla-ish
-
-#Keyframe Presets GUI
-replaymod.gui.keyframerepository.title=Keyframe Repository
-replaymod.gui.keyframerepository.presets=Keyframe Presets
-replaymod.gui.keyframerepository.positionkeyframes=Position Keyframes
-replaymod.gui.keyframerepository.timekeyframes=Time Keyframes
-
-replaymod.gui.keyframerepository.savecurrent=Save current Path
-
-replaymod.gui.keyframerepository.noentries=No Presets available
-
-replaymod.gui.keyframerepository.preset.defaultname=New Keyframe Preset
-replaymod.gui.keyframerepository.duplicate=This Preset already exists
-
-#Edit Keyframe GUI
-replaymod.gui.editkeyframe.title.pos=Edit Position Keyframe
-replaymod.gui.editkeyframe.title.time=Edit Time Keyframe
-replaymod.gui.editkeyframe.title.marker=Edit Event Marker
-replaymod.gui.editkeyframe.title.spec=Edit Spectator Keyframe
-replaymod.gui.editkeyframe.xpos=X Position
-replaymod.gui.editkeyframe.ypos=Y Position
-replaymod.gui.editkeyframe.zpos=Z Position
-replaymod.gui.editkeyframe.campitch=Camera Pitch
-replaymod.gui.editkeyframe.camyaw=Camera Yaw
-replaymod.gui.editkeyframe.camroll=Camera Roll
-replaymod.gui.editkeyframe.timelineposition=Timeline Position
-replaymod.gui.editkeyframe.markername=Event Marker Name
-replaymod.gui.editkeyframe.timestamp=Time Index
-
-replaymod.gui.editkeyframe.spec.method=Spectating Method
-replaymod.gui.editkeyframe.spec.method.firstperson=First Person
-replaymod.gui.editkeyframe.spec.method.shoulder=Shoulder Camera
-
-replaymod.gui.editkeyframe.spec.method.shoulder.distance=Camera Distance
-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
-
-#Render Settings GUI
-replaymod.gui.rendersettings.title=Rendering Options
-replaymod.gui.rendersettings.renderer=Rendering Method
-
-replaymod.gui.rendersettings.renderer.default=Default Rendering
-replaymod.gui.rendersettings.renderer.tiled=Tiled Rendering
-replaymod.gui.rendersettings.renderer.stereoscopic=Stereoscopic Rendering
-replaymod.gui.rendersettings.renderer.cubic=Cubic Rendering
-replaymod.gui.rendersettings.renderer.equirectangular=Equirectangular Rendering
-replaymod.gui.rendersettings.renderer.ods=ODS Rendering
-
-replaymod.gui.rendersettings.renderer.default.description=Renders the video in the specified resolution. Fastest Rendering Option.
-replaymod.gui.rendersettings.renderer.stereoscopic.description=Renders the video as a stereoscopic (side-by-side) 3D movie, usable by different 3D technologies. The image for one eye is half the width of the video
-replaymod.gui.rendersettings.renderer.cubic.description=Renders the video with a 360 degree panoramic view, using Cubic Projection. This is usable by several 360 degree video players (and the Oculus Rift), for example VR Player.
-replaymod.gui.rendersettings.renderer.equirectangular.description=Renders the video with a 360 degree panoramic view, using Equirectangular Projection. This is usable by YouTube's new 360 degree video function, and several video players (and the Oculus Rift), for example VR Player.
-replaymod.gui.rendersettings.renderer.ods.description=Renders the video with a stereoscopic 3D 360 degree panoramic view, also called VR Video. This is usable by YouTube's new VR video function.
-
-replaymod.gui.rendersettings.customresolution=Video Resolution
-replaymod.gui.rendersettings.customresolution.warning.cubic=Cubic Rendering requires an aspect ratio of 4:3
-replaymod.gui.rendersettings.customresolution.warning.equirectangular=Equirectangular Rendering requires an aspect ratio of 2:1
-replaymod.gui.rendersettings.customresolution.warning.yuv420=For this preset, the width and height values need to be even numbers
-replaymod.gui.rendersettings.customresolution.warning.ods=ODS Rendering requires an aspect ratio of 1:1
-replaymod.gui.rendersettings.resolution=Video Resolution
-replaymod.gui.rendersettings.interpolation=Path Interpolation
-replaymod.gui.rendersettings.forcechunks=Force Render Chunks
-replaymod.gui.rendersettings.framerate=Video Framerate
-replaymod.gui.rendersettings.quality=Video Quality
-replaymod.gui.rendersettings.chromakey=Chroma Keying
-replaymod.gui.rendersettings.skycolor=Sky Color
-replaymod.gui.rendersettings.nametags=Render Name Tags
-replaymod.gui.rendersettings.outputfile=Output File
-replaymod.gui.rendersettings.360metadata=Inject 360° Metadata
-replaymod.gui.rendersettings.360metadata.error=360° Metadata can only be added to Equirectangular videos in MP4 format
-
-replaymod.gui.rendersettings.command=Command
-replaymod.gui.rendersettings.arguments=Command Line Arguments
-replaymod.gui.rendersettings.ffmpeg.description=If you are an advanced user, you can customize the command line parameters used to export the video. For more information, check http://replaymod.com/docs
-
-replaymod.gui.rendersettings.stabilizecamera=Stabilize Camera
-replaymod.gui.rendersettings.exportyoutube=Export for YouTube
-
-replaymod.gui.rendersettings.video=Video Settings
-replaymod.gui.rendersettings.advanced=Advanced Settings
-replaymod.gui.rendersettings.commandline=Command Line Settings
-
-replaymod.gui.rendersettings.presets=Encoding Presets
-replaymod.gui.rendersettings.presets.mp4.custom=MP4 - Custom Bitrate
-replaymod.gui.rendersettings.presets.mp4.high=MP4 - High Quality
-replaymod.gui.rendersettings.presets.mp4.default=MP4 - Default Quality
-replaymod.gui.rendersettings.presets.mp4.potato=MP4 - Potato Quality
-replaymod.gui.rendersettings.presets.webm.custom=WEBM - Custom Bitrate
-replaymod.gui.rendersettings.presets.mkv.lossless=MKV - Lossless
-replaymod.gui.rendersettings.presets.png=PNG Sequence
-
-replaymod.gui.rendersettings.antialiasing=Anti-Aliasing
-replaymod.gui.rendersettings.antialiasing.none=None
-replaymod.gui.rendersettings.antialiasing.x2=2x
-replaymod.gui.rendersettings.antialiasing.x4=4x
-replaymod.gui.rendersettings.antialiasing.x8=8x
-
-#Render Queue GUI
-replaymod.gui.renderqueue.title=Render Queue
-replaymod.gui.renderqueue.open=Open Queue
-replaymod.gui.renderqueue.jobname=Job Name:
-replaymod.gui.renderqueue.add=Add current configuration
-
-#Rendering GUI
-replaymod.gui.rendering.title=Rendering Video
-replaymod.gui.rendering.pause=Pause Rendering
-replaymod.gui.rendering.resume=Resume Rendering
-replaymod.gui.rendering.cancel=Cancel Rendering
-replaymod.gui.rendering.cancel.callback=Are you sure?
-replaymod.gui.rendering.preview=Show Preview (Performance might suffer)
-replaymod.gui.rendering.progress=Frames rendered: %1$d / %2$d
-replaymod.gui.rendering.timetaken=Render Time
-replaymod.gui.rendering.timeleft=Time Left
-
-#Render Errors
-replaymod.gui.rendering.error.title=Rendering Failed
-replaymod.gui.rendering.error.optifine=Please uninstall Optifine before rendering.
-replaymod.gui.rendering.error.message=To render a video, you need to have ffmpeg installed. http://ffmpeg.org
-
-#Ingame Menu
-replaymod.gui.ingame.menu.addposkeyframe=Add Position Keyframe
-replaymod.gui.ingame.menu.removeposkeyframe=Remove Position Keyframe
-replaymod.gui.ingame.menu.addspeckeyframe=Add Spectator Keyframe
-replaymod.gui.ingame.menu.removespeckeyframe=Remove Spectator Keyframe
-replaymod.gui.ingame.menu.addtimekeyframe=Add Time Keyframe
-replaymod.gui.ingame.menu.removetimekeyframe=Remove Time Keyframe
-replaymod.gui.ingame.menu.pause=Pause Replay
-replaymod.gui.ingame.menu.unpause=Unpause Replay
-replaymod.gui.ingame.menu.renderpath=Render Camera Path
-replaymod.gui.ingame.menu.playpath=Play Camera Path from Cursor Position
-replaymod.gui.ingame.menu.playpathfromstart=Play Camera Path from Start
-replaymod.gui.ingame.menu.pausepath=Pause Camera Path
-replaymod.gui.ingame.menu.zoomin=Zoom in
-replaymod.gui.ingame.menu.zoomout=Zoom out
-
-replaymod.gui.ingame.unnamedmarker=Unnamed Event Marker
-
-#Clear Keyframe Callback
-replaymod.gui.clearcallback.title=Clear all Keyframes?
-replaymod.gui.clearcallback.message=This Callback can be disabled in the Replay Settings.
-
-#Asset Manager Gui
-replaymod.gui.assets.title=Asset Manager
-replaymod.gui.assets.filechooser=Asset File
-replaymod.gui.assets.defaultname=New Asset
-replaymod.gui.assets.emptylist=No Assets available
-replaymod.gui.assets.namehint=Asset Name
-replaymod.gui.assets.changefile=Change Asset File
-replaymod.gui.assets.noselection=No Asset selected
-
-#Object Manager Gui
-replaymod.gui.objects.properties.anchor=Anchor Point
-replaymod.gui.objects.properties.position=Position
-replaymod.gui.objects.properties.scale=Scale
-replaymod.gui.objects.properties.orientation=Orientation
-replaymod.gui.objects.properties.opacity=Opacity
-replaymod.gui.objects.properties.name=Object Name
-replaymod.gui.objects.empty=No Objects added
-replaymod.gui.objects.defaultname=New Object
-replaymod.gui.objects=Custom Objects
-
-#Errors
-replaymod.error.unknownrestriction1=This replay cannot be played with your current version.
-replaymod.error.unknownrestriction2=It tried to enforce %s which is unknown.
-replaymod.error.negativetime1=Some of your time keyframes are out of order.
-replaymod.error.negativetime2=Going backwards in time is not supported.
-replaymod.error.negativetime3=The invalid parts are marked in red.
-
-#Replay Mod Incompatibility Warning
-replaymod.gui.modwarning.title=Incompatibility detected
-replaymod.gui.modwarning.message1=A possible incompatibility between your current
-replaymod.gui.modwarning.message2=Minecraft version and this Replay has been detected.
-replaymod.gui.modwarning.message3=Loading this Replay may result in errors or a crash.
-replaymod.gui.modwarning.name=Mod Name:
-replaymod.gui.modwarning.id=Mod Id:
-replaymod.gui.modwarning.missing=Missing Mods
-replaymod.gui.modwarning.version=Different Mod Versions
-replaymod.gui.modwarning.version.expected=Expected
-replaymod.gui.modwarning.version.found=Found
-
-#OpenEye
-replaymod.gui.offeropeneye1=Do you want to install OpenEye?
-replaymod.gui.offeropeneye2=OpenEye is a mod that collects anonymous information
-replaymod.gui.offeropeneye3=about the mods being run and any crashes that happen.
-replaymod.gui.offeropeneye4=
-replaymod.gui.offeropeneye5=OpenEye can be disabled at any time and is completely optional.
-replaymod.gui.offeropeneye6=More information is available at https://openeye.openmods.info/faq
-replaymod.gui.offeropeneye7=Clicking Yes will download OpenEye and place it in your mods folder.
-replaymod.gui.offeropeneye8=It will then be active the next time you start Minecraft.

src/main/resources/dst_root_ca_x3.pem

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

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

@@ -0,0 +1,647 @@
+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 testMoveKeyframeSimple() {
+        addPosition(0, 0);
+        addPosition(1, 1);
+        setInterpolator(0, new LinearInterpolator(), 1);
+        assertIsLinear(0);
+
+        impl.moveKeyframe(SPPath.POSITION, 0, 2);
+        assertValidInterpolators(SPPath.POSITION, 1);
+        assertIsLinear(0);
+        impl.moveKeyframe(SPPath.POSITION, 2, 0);
+        assertValidInterpolators(SPPath.POSITION, 1);
+        assertIsLinear(0);
+
+        addPosition(2, 1);
+        impl.moveKeyframe(SPPath.POSITION, 0, 3);
+        assertValidInterpolators(SPPath.POSITION, 1);
+        assertIsLinear(0);
+        assertIsLinear(1);
+    }
+
+    @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();
+    }
+}