/*
* Copyright (c) 2009-2012 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.animation;
import com.jme3.export.*;
import com.jme3.renderer.RenderManager;
import com.jme3.renderer.ViewPort;
import com.jme3.scene.Mesh;
import com.jme3.scene.Spatial;
import com.jme3.scene.control.AbstractControl;
import com.jme3.scene.control.Control;
import com.jme3.util.TempVars;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map.Entry;
/**
* <code>AnimControl</code> is a Spatial control that allows manipulation
* of skeletal animation.
*
* The control currently supports:
* 1) Animation blending/transitions
* 2) Multiple animation channels
* 3) Multiple skins
* 4) Animation event listeners
* 5) Animated model cloning
* 6) Animated model binary import/export
*
* Planned:
* 1) Hardware skinning
* 2) Morph/Pose animation
* 3) Attachments
* 4) Add/remove skins
*
* @author Kirill Vainer
*/
public final class AnimControl extends AbstractControl implements Cloneable {
/**
* Skeleton object must contain corresponding data for the targets' weight buffers.
*/
Skeleton skeleton;
/** only used for backward compatibility */
@Deprecated
private SkeletonControl skeletonControl;
/**
* List of animations
*/
HashMap<String, Animation> animationMap = new HashMap<String, Animation>();
/**
* Animation channels
*/
private transient ArrayList<AnimChannel> channels = new ArrayList<AnimChannel>();
/**
* Animation event listeners
*/
private transient ArrayList<AnimEventListener> listeners = new ArrayList<AnimEventListener>();
/**
* Creates a new animation control for the given skeleton.
* The method {@link AnimControl#setAnimations(java.util.HashMap) }
* must be called after initialization in order for this class to be useful.
*
* @param skeleton The skeleton to animate
*/
public AnimControl(Skeleton skeleton) {
this.skeleton = skeleton;
reset();
}
/**
* Serialization only. Do not use.
*/
public AnimControl() {
}
/**
* Internal use only.
*/
public Control cloneForSpatial(Spatial spatial) {
try {
AnimControl clone = (AnimControl) super.clone();
clone.spatial = spatial;
clone.channels = new ArrayList<AnimChannel>();
clone.listeners = new ArrayList<AnimEventListener>();
if (skeleton != null) {
clone.skeleton = new Skeleton(skeleton);
}
// animationMap is cloned, but only ClonableTracks will be cloned as they need a reference to a cloned spatial
for (Entry<String, Animation> animEntry : animationMap.entrySet()) {
clone.animationMap.put(animEntry.getKey(), animEntry.getValue().cloneForSpatial(spatial));
}
return clone;
} catch (CloneNotSupportedException ex) {
throw new AssertionError();
}
}
/**
* @param animations Set the animations that this <code>AnimControl</code>
* will be capable of playing. The animations should be compatible
* with the skeleton given in the constructor.
*/
public void setAnimations(HashMap<String, Animation> animations) {
animationMap = animations;
}
/**
* Retrieve an animation from the list of animations.
* @param name The name of the animation to retrieve.
* @return The animation corresponding to the given name, or null, if no
* such named animation exists.
*/
public Animation getAnim(String name) {
return animationMap.get(name);
}
/**
* Adds an animation to be available for playing to this
* <code>AnimControl</code>.
* @param anim The animation to add.
*/
public void addAnim(Animation anim) {
animationMap.put(anim.getName(), anim);
}
/**
* Remove an animation so that it is no longer available for playing.
* @param anim The animation to remove.
*/
public void removeAnim(Animation anim) {
if (!animationMap.containsKey(anim.getName())) {
throw new IllegalArgumentException("Given animation does not exist "
+ "in this AnimControl");
}
animationMap.remove(anim.getName());
}
/**
* Create a new animation channel, by default assigned to all bones
* in the skeleton.
*
* @return A new animation channel for this <code>AnimControl</code>.
*/
public AnimChannel createChannel() {
AnimChannel channel = new AnimChannel(this);
channels.add(channel);
return channel;
}
/**
* Return the animation channel at the given index.
* @param index The index, starting at 0, to retrieve the <code>AnimChannel</code>.
* @return The animation channel at the given index, or throws an exception
* if the index is out of bounds.
*
* @throws IndexOutOfBoundsException If no channel exists at the given index.
*/
public AnimChannel getChannel(int index) {
return channels.get(index);
}
/**
* @return The number of channels that are controlled by this
* <code>AnimControl</code>.
*
* @see AnimControl#createChannel()
*/
public int getNumChannels() {
return channels.size();
}
/**
* Clears all the channels that were created.
*
* @see AnimControl#createChannel()
*/
public void clearChannels() {
for (AnimChannel animChannel : channels) {
for (AnimEventListener list : listeners) {
list.onAnimCycleDone(this, animChannel, animChannel.getAnimationName());
}
}
channels.clear();
}
/**
* @return The skeleton of this <code>AnimControl</code>.
*/
public Skeleton getSkeleton() {
return skeleton;
}
/**
* Adds a new listener to receive animation related events.
* @param listener The listener to add.
*/
public void addListener(AnimEventListener listener) {
if (listeners.contains(listener)) {
throw new IllegalArgumentException("The given listener is already "
+ "registed at this AnimControl");
}
listeners.add(listener);
}
/**
* Removes the given listener from listening to events.
* @param listener
* @see AnimControl#addListener(com.jme3.animation.AnimEventListener)
*/
public void removeListener(AnimEventListener listener) {
if (!listeners.remove(listener)) {
throw new IllegalArgumentException("The given listener is not "
+ "registed at this AnimControl");
}
}
/**
* Clears all the listeners added to this <code>AnimControl</code>
*
* @see AnimControl#addListener(com.jme3.animation.AnimEventListener)
*/
public void clearListeners() {
listeners.clear();
}
void notifyAnimChange(AnimChannel channel, String name) {
for (int i = 0; i < listeners.size(); i++) {
listeners.get(i).onAnimChange(this, channel, name);
}
}
void notifyAnimCycleDone(AnimChannel channel, String name) {
for (int i = 0; i < listeners.size(); i++) {
listeners.get(i).onAnimCycleDone(this, channel, name);
}
}
/**
* Internal use only.
*/
@Override
public void setSpatial(Spatial spatial) {
if (spatial == null && skeletonControl != null) {
this.spatial.removeControl(skeletonControl);
}
super.setSpatial(spatial);
//Backward compatibility.
if (spatial != null && skeletonControl != null) {
spatial.addControl(skeletonControl);
}
}
final void reset() {
if (skeleton != null) {
skeleton.resetAndUpdate();
}
}
/**
* @return The names of all animations that this <code>AnimControl</code>
* can play.
*/
public Collection<String> getAnimationNames() {
return animationMap.keySet();
}
/**
* Returns the length of the given named animation.
* @param name The name of the animation
* @return The length of time, in seconds, of the named animation.
*/
public float getAnimationLength(String name) {
Animation a = animationMap.get(name);
if (a == null) {
throw new IllegalArgumentException("The animation " + name
+ " does not exist in this AnimControl");
}
return a.getLength();
}
/**
* Internal use only.
*/
@Override
protected void controlUpdate(float tpf) {
if (skeleton != null) {
skeleton.reset(); // reset skeleton to bind pose
}
TempVars vars = TempVars.get();
for (int i = 0; i < channels.size(); i++) {
channels.get(i).update(tpf, vars);
}
vars.release();
if (skeleton != null) {
skeleton.updateWorldVectors();
}
}
/**
* Internal use only.
*/
@Override
protected void controlRender(RenderManager rm, ViewPort vp) {
}
@Override
public void write(JmeExporter ex) throws IOException {
super.write(ex);
OutputCapsule oc = ex.getCapsule(this);
oc.write(skeleton, "skeleton", null);
oc.writeStringSavableMap(animationMap, "animations", null);
}
@Override
public void read(JmeImporter im) throws IOException {
super.read(im);
InputCapsule in = im.getCapsule(this);
skeleton = (Skeleton) in.readSavable("skeleton", null);
HashMap<String, Animation> loadedAnimationMap = (HashMap<String, Animation>) in.readStringSavableMap("animations", null);
if (loadedAnimationMap != null) {
animationMap = loadedAnimationMap;
}
if (im.getFormatVersion() == 0) {
// Changed for backward compatibility with j3o files generated
// before the AnimControl/SkeletonControl split.
// If we find a target mesh array the AnimControl creates the
// SkeletonControl for old files and add it to the spatial.
// When backward compatibility won't be needed anymore this can deleted
Savable[] sav = in.readSavableArray("targets", null);
if (sav != null) {
Mesh[] targets = new Mesh[sav.length];
System.arraycopy(sav, 0, targets, 0, sav.length);
skeletonControl = new SkeletonControl(targets, skeleton);
spatial.addControl(skeletonControl);
}
}
}
}