New methods for help with compat patches

core/src/main/java/com/zigythebird/playeranimcore/animation/AnimationController.java

@@ -992,6 +992,20 @@ public AdvancedPlayerAnimBone registerPlayerAnimBone(String name) {
 		return registerPlayerAnimBone(new AdvancedPlayerAnimBone(name));
 	}
 
+	@Override
+	public boolean modifiesPart(String name) {
+		return this.activeBones.containsKey(name);
+	}
+
+	@Override
+	public boolean bendsPart(String name) {
+		if (modifiesPart(name) && this.bones.containsKey(name)) {
+			AdvancedPlayerAnimBone bone = this.bones.get(name);
+			return bone.bendEnabled && bone.bend != 0;
+		}
+		return false;
+	}
+
 	/**
 	 * Adds the given bone to the bones list for this controller
 	 * <p>

core/src/main/java/com/zigythebird/playeranimcore/animation/layered/AnimationContainer.java

@@ -89,6 +89,16 @@ public void setupAnim(AnimationData state) {
         return anim != null ? anim.getFirstPersonConfiguration() : IAnimation.super.getFirstPersonConfiguration();
     }
 
+    @Override
+    public boolean modifiesPart(String name) {
+        return anim != null && anim.modifiesPart(name);
+    }
+
+    @Override
+    public boolean bendsPart(String name) {
+        return anim != null && anim.bendsPart(name);
+    }
+
     @Override
     public String toString() {
         return "AnimationContainer{" +

core/src/main/java/com/zigythebird/playeranimcore/animation/layered/AnimationSnapshot.java

@@ -20,6 +20,20 @@ public PlayerAnimBone get3DTransform(@NotNull PlayerAnimBone bone) {
         return bone;
     }
 
+    @Override
+    public boolean modifiesPart(String name) {
+        return snapshots.containsKey(name);
+    }
+
+    @Override
+    public boolean bendsPart(String name) {
+        if (modifiesPart(name)) {
+            AdvancedBoneSnapshot snapshot = snapshots.get(name);
+            return snapshot.bendEnabled && snapshot.getBend() != 0;
+        }
+        return false;
+    }
+
     @Override
     public @NotNull String toString() {
         return "AnimationSnapshot{" +

core/src/main/java/com/zigythebird/playeranimcore/animation/layered/AnimationStack.java

@@ -114,6 +114,22 @@ public boolean removeLayer(int layerLevel) {
         return IAnimation.super.getFirstPersonConfiguration();
     }
 
+    @Override
+    public boolean modifiesPart(String name) {
+        for (int i = layers.size(); i > 0;) {
+            if (layers.get(--i).right().modifiesPart(name)) return true;
+        }
+        return false;
+    }
+
+    @Override
+    public boolean bendsPart(String name) {
+        for (int i = layers.size(); i > 0;) {
+            if (layers.get(--i).right().bendsPart(name)) return true;
+        }
+        return false;
+    }
+
     public int getPriority() {
         int priority = 0;
         for (int i=layers.size()-1; i>=0; i--) {

core/src/main/java/com/zigythebird/playeranimcore/animation/layered/IAnimation.java

@@ -84,4 +84,21 @@ default FirstPersonConfiguration getFirstPersonConfiguration() {
     default boolean canRemove() {
         return false;
     }
+
+    //TODO Maybe make these two methods no longer default the next breaking change
+    /**
+     * Useful for compatibility patches.
+     * You can see which parts are modified by the mod.
+     */
+    default boolean modifiesPart(String name) {
+        return false;
+    }
+
+    /**
+     * Useful for compatibility patches.
+     * You can see which parts are being bent by the mod.
+     */
+    default boolean bendsPart(String name) {
+        return false;
+    }
 }

core/src/main/java/com/zigythebird/playeranimcore/animation/layered/ModifierLayer.java

@@ -178,6 +178,16 @@ public void setupAnim(AnimationData state) {
         return IAnimation.super.getFirstPersonConfiguration();
     }
 
+    @Override
+    public boolean modifiesPart(String name) {
+        return animation != null && animation.modifiesPart(name);
+    }
+
+    @Override
+    public boolean bendsPart(String name) {
+        return animation != null && animation.bendsPart(name);
+    }
+
     @Override
     public String toString() {
         return "ModifierLayer{" +