Merge pull request #100 from fastjengine/behavior-destroy

Add method calls to destroy behaviors in Scene/SimpleManager, fixes #99

Additions
- BehaviorManager.destroyListenerList for destroying the behaviors of any BehaviorHandler's behavior listener list.
- BehaviorHandler.destroyBehaviorListeners for calling the BehaviorManager's behavior destroying method.


## Bug Fixes
- (#99) Added behavior destroy calls to both SimpleManager and Scene classes' `reset` methods.

Author: lucasstarsz

src/main/java/tech/fastj/systems/behaviors/BehaviorHandler.java

@@ -52,6 +52,11 @@ default void updateBehaviorListeners() {
         BehaviorManager.updateBehaviorListeners(this);
     }
 
+    /** Destroys all behaviors in the behavior handler, without removing them. */
+    default void destroyBehaviorListeners() {
+        BehaviorManager.destroyListenerList(this);
+    }
+
     /** Removes all behavior listeners in the behavior handler. */
     default void clearBehaviorListeners() {
         BehaviorManager.clearListenerList(this);

src/main/java/tech/fastj/systems/behaviors/BehaviorManager.java

@@ -75,6 +75,17 @@ public static void removeListenerList(BehaviorHandler behaviorHandler) {
         BehaviorListenerLists.remove(behaviorHandler);
     }
 
+    /**
+     * Destroys all behaviors from the list aliased to the specified {@link BehaviorHandler}, without removing them.
+     *
+     * @param behaviorHandler The {@code BehaviorHandler} used as the alias to destroy all behavior listeners.
+     */
+    public static void destroyListenerList(BehaviorHandler behaviorHandler) {
+        for (GameObject listener : BehaviorListenerLists.get(behaviorHandler).values()) {
+            listener.destroyAllBehaviors();
+        }
+    }
+
     /**
      * Removes all elements from the list aliased to the specified {@link BehaviorHandler}.
      *

src/main/java/tech/fastj/systems/control/Scene.java

@@ -122,6 +122,7 @@ public void clearAllLists() {
     /** Resets the scene's state entirely. */
     public void reset() {
         this.setInitialized(false);
+        this.destroyBehaviorListeners();
         this.clearAllLists();
         camera.reset();
     }

src/main/java/tech/fastj/systems/control/SimpleManager.java

@@ -87,6 +87,7 @@ public Camera getCamera() {
     @Override
     public void reset() {
         camera.reset();
+        this.destroyBehaviorListeners();
         inputManager.clearAllLists();
         drawableManager.clearAllLists();
         this.clearTaggableEntities();