Add undo/redo to keyframe timeline (closes #305)

docs/content.md

@@ -147,6 +147,8 @@ If two Keyframes are 5 seconds apart, the Camera Path will take 5 seconds to int
 
 You can drag Keyframes on the **Keyframe Timeline** by left-clicking them, holding the mouse button and moving your mouse.
 
+> **Hint:** Made a mistake? You can use `Ctrl+Z` to undo your changes to the keyframe timeline. Changed you mind? Press `Ctrl+Y` (or `Ctrl+Shift+Z`) to redo them.
+
 ### Position Keyframes [place]
 The basic components of a Camera Path are **Position Keyframes**.
 A Position Keyframe stores a **Camera Position** (x, y, z, yaw, pitch, roll).

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

@@ -22,6 +22,7 @@ import com.replaymod.replaystudio.replay.ReplayFile;
 import com.replaymod.simplepathing.SPTimeline.SPPath;
 import com.replaymod.simplepathing.gui.GuiPathing;
 import com.replaymod.simplepathing.preview.PathPreview;
+import net.minecraft.client.gui.screen.Screen;
 import net.minecraft.util.crash.CrashReport;
 import net.minecraft.util.crash.CrashException;
 import org.apache.logging.log4j.LogManager;
@@ -114,6 +115,32 @@ public class ReplayModSimplePathing extends EventRegistrations implements Module
                 guiPathing.toggleKeyframe(SPPath.POSITION, false);
             }
         }, true);
+        core.getKeyBindingRegistry().registerRaw(Keyboard.KEY_Z, () -> {
+            if (Screen.hasControlDown() && currentTimeline != null) {
+                Timeline timeline = currentTimeline.getTimeline();
+                if (Screen.hasShiftDown()) {
+                    if (timeline.peekRedoStack() != null) {
+                        timeline.redoLastChange();
+                    }
+                } else {
+                    if (timeline.peekUndoStack() != null) {
+                        timeline.undoLastChange();
+                    }
+                }
+                return true;
+            }
+            return false;
+        });
+        core.getKeyBindingRegistry().registerRaw(Keyboard.KEY_Y, () -> {
+            if (Screen.hasControlDown() && currentTimeline != null) {
+                Timeline timeline = currentTimeline.getTimeline();
+                if (timeline.peekRedoStack() != null) {
+                    timeline.redoLastChange();
+                }
+                return true;
+            }
+            return false;
+        });
     }
 
     { on(ReplayOpenedCallback.EVENT, this::onReplayOpened); }

versions/common.gradle

@@ -305,7 +305,7 @@ dependencies {
 
     shadow 'com.github.ReplayMod.JavaBlend:2.79.0:a0696f8'
 
-    shadow "com.github.ReplayMod:ReplayStudio:9558f9e", shadeExclusions
+    shadow "com.github.ReplayMod:ReplayStudio:919db4e", shadeExclusions
 
     implementation(jGui){
         transitive = false // FG 1.2 puts all MC deps into the compile configuration and we don't want to shade those