Fix VRCAnimatorPlayAudio not getting its source path adjusted when …

…using `Delete Unused GameObjects`. #93
d4rkc0d3r · Apr 17, 2024 · 2c2316c · 2c2316c
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,6 +5,7 @@
 * Fix `#pragma shader_feature` only getting replaced by defining the keywords instead of defining them as a true value.
 * Fix always disabled ParticleSystemRenderers getting deleted when `Delete Unused Components` is enabled. [(more)](https://github.com/d4rkc0d3r/d4rkAvatarOptimizer/issues/91)
   * Somehow the ParticleSystemRenderer component is important for the particle system to work even if it is disabled. Maybe something about sub emitters? idk
+* Fix `VRCAnimatorPlayAudio` not getting its source path adjusted when using `Delete Unused GameObjects`. [(more)](https://github.com/d4rkc0d3r/d4rkAvatarOptimizer/issues/93)
 
 ## v3.6.0
 ### Features

diff --git a/Editor/d4rkAvatarOptimizer.cs b/Editor/d4rkAvatarOptimizer.cs
@@ -1536,6 +1536,21 @@ private void FixAllAnimationPaths()
                 state.motion = FixMotion(state.motion, fixedMotions, layerCopyPaths[i]);
             }
 
+            if (DeleteUnusedGameObjects) {
+                var playAudioType = Type.GetType("VRC.SDKBase.VRC_AnimatorPlayAudio, VRCSDKBase");
+                if (playAudioType != null) {
+                    var pathField = playAudioType.GetField("SourcePath", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.Public);
+                    foreach (var behaviour in newLayer.layers.SelectMany(layer => layer.stateMachine.EnumerateAllBehaviours())) {
+                        if (playAudioType.IsAssignableFrom(behaviour.GetType())) {
+                            var path = (string)pathField.GetValue(behaviour) ?? "";
+                            if (transformFromOldPath.TryGetValue(path, out var transform) && transform != null) {
+                                pathField.SetValue(behaviour, GetPathToRoot(transform));
+                            }
+                        }
+                    }
+                }
+            }
+
             avDescriptor.baseAnimationLayers[i].animatorController = newLayer;
         }
         Profiler.StartSection("AssetDatabase.SaveAssets()");