Adding getters/setters to AnimComposer (#1376)

* Add getCurrentAction

* Add removeCurrentAction (default layer)

* Add setTime (default layer)

* Add getTime (default layer)

* Improve documentation

Author: rkraneis

jme3-core/src/main/java/com/jme3/anim/AnimComposer.java

@@ -48,10 +48,16 @@
 import java.util.*;
 
 /**
- * Created by Nehon on 20/12/2017.
+ * AnimComposer is a Spatial control that allows manipulation of
+ * {@link Armature armature} (skeletal) animation.
+ * 
+ * @author Nehon
  */
 public class AnimComposer extends AbstractControl {
 
+    /**
+     * The name of the default layer.
+     */
     public static final String DEFAULT_LAYER = "Default";
     private Map<String, AnimClip> animClipMap = new HashMap<>();
 
@@ -63,6 +69,12 @@ public AnimComposer() {
         layers.put(DEFAULT_LAYER, new Layer(this));
     }
 
+    /**
+     * Tells if an animation is contained in the list of animations.
+     * 
+     * @param name The name of the animation.
+     * @return true, if the named animation is in the list of animations.
+     */
     public boolean hasAnimClip(String name) {
         return animClipMap.containsKey(name);
     }
@@ -102,6 +114,12 @@ public void removeAnimClip(AnimClip anim) {
         animClipMap.remove(anim.getName());
     }
 
+    /**
+     * Run an action on the default layer.
+     * 
+     * @param name The name of the action to run.
+     * @return The action corresponding to the given name.
+     */
     public Action setCurrentAction(String name) {
         return setCurrentAction(name, DEFAULT_LAYER);
     }
@@ -125,6 +143,37 @@ public Action setCurrentAction(String actionName, String layerName) {
         return currentAction;
     }
 
+    /**
+     * Return the current action on the default layer.
+     * 
+     * @return  The action corresponding to the given name.
+     */
+    public Action getCurrentAction() {
+        return getCurrentAction(DEFAULT_LAYER);
+    }
+    
+    /**
+     * Return current action on specified layer.
+     * 
+     * @param layerName The layer on which action should run.
+     * @return The action corresponding to the given name.
+     */
+    public Action getCurrentAction(String layerName) {
+        Layer l = layers.get(layerName);
+        if (l == null) {
+            throw new IllegalArgumentException("Unknown layer " + layerName);
+        }
+        
+        return l.currentAction;
+    }
+    
+    /**
+     * Remove current action on default layer.
+     */
+    public void removeCurrentAction() {
+        removeCurrentAction(DEFAULT_LAYER);
+    }
+    
     /**
      * Remove current action on specified layer.
      *
@@ -140,8 +189,19 @@ public void removeCurrentAction(String layerName) {
         l.currentAction = null;
     }
 
+    /**
+     * Returns current time of the default layer.
+     * 
+     * @return The current time.
+     */
+    public double getTime() {
+        return getTime(DEFAULT_LAYER);
+    }
+    
     /**
      * Returns current time of the specified layer.
+     * 
+     * @param layerName The layer from which to get the time.
      */
     public double getTime(String layerName) {
         Layer l = layers.get(layerName);
@@ -150,9 +210,16 @@ public double getTime(String layerName) {
         }
         return l.time;
     }
+    
+    /**
+     * Sets current time on the default layer.
+     */
+    public void setTime(double time) {
+        setTime(DEFAULT_LAYER, time);
+    }
 
     /**
-     * Sets current time on the specified layer. 
+     * Sets current time on the specified layer.
      */
     public void setTime(String layerName, double time) {
         Layer l = layers.get(layerName);
@@ -221,6 +288,12 @@ public Action makeAction(String name) {
         return action;
     }
 
+    /**
+     * Tells if an action is contained in the list of actions.
+     * 
+     * @param name The name of the action.
+     * @return true, if the named action is in the list of actions.
+     */
     public boolean hasAction(String name) {
         return actions.containsKey(name);
     }
@@ -250,12 +323,20 @@ public void removeLayer(String name) {
         layers.remove(name);
     }
 
+    /**
+     * Creates an action that will interpolate over an entire sequence
+     * of tweens in order.
+     */
     public BaseAction actionSequence(String name, Tween... tweens) {
         BaseAction action = new BaseAction(Tweens.sequence(tweens));
         actions.put(name, action);
         return action;
     }
 
+    /**
+     * Creates an action that blends the named clips using the given blend
+     * space.
+     */
     public BlendAction actionBlended(String name, BlendSpace blendSpace, String... clips) {
         BlendableAction[] acts = new BlendableAction[clips.length];
         for (int i = 0; i < acts.length; i++) {