/*
* 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.scene;
import com.jme3.asset.AssetInfo;
import com.jme3.asset.AssetManager;
import com.jme3.asset.ModelKey;
import com.jme3.export.InputCapsule;
import com.jme3.export.JmeExporter;
import com.jme3.export.JmeImporter;
import com.jme3.export.OutputCapsule;
import com.jme3.export.binary.BinaryImporter;
import com.jme3.util.SafeArrayList;
import java.io.IOException;
import java.util.*;
import java.util.Map.Entry;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* The AssetLinkNode does not store its children when exported to file.
* Instead, you can add a list of AssetKeys that will be loaded and attached
* when the AssetLinkNode is restored.
*
* @author normenhansen
*/
public class AssetLinkNode extends Node {
protected ArrayList<ModelKey> assetLoaderKeys = new ArrayList<ModelKey>();
protected Map<ModelKey, Spatial> assetChildren = new HashMap<ModelKey, Spatial>();
public AssetLinkNode() {
}
public AssetLinkNode(ModelKey key) {
this(key.getName(), key);
}
public AssetLinkNode(String name, ModelKey key) {
super(name);
assetLoaderKeys.add(key);
}
/**
* Add a "linked" child. These are loaded from the assetManager when the
* AssetLinkNode is loaded from a binary file.
* @param key
*/
public void addLinkedChild(ModelKey key) {
if (assetLoaderKeys.contains(key)) {
return;
}
assetLoaderKeys.add(key);
}
public void removeLinkedChild(ModelKey key) {
assetLoaderKeys.remove(key);
}
public ArrayList<ModelKey> getAssetLoaderKeys() {
return assetLoaderKeys;
}
public void attachLinkedChild(AssetManager manager, ModelKey key) {
addLinkedChild(key);
Spatial child = manager.loadAsset(key);
assetChildren.put(key, child);
attachChild(child);
}
public void attachLinkedChild(Spatial spat, ModelKey key) {
addLinkedChild(key);
assetChildren.put(key, spat);
attachChild(spat);
}
public void detachLinkedChild(ModelKey key) {
Spatial spatial = assetChildren.get(key);
if (spatial != null) {
detachChild(spatial);
}
removeLinkedChild(key);
assetChildren.remove(key);
}
public void detachLinkedChild(Spatial child, ModelKey key) {
removeLinkedChild(key);
assetChildren.remove(key);
detachChild(child);
}
/**
* Loads the linked children AssetKeys from the AssetManager and attaches them to the Node<br>
* If they are already attached, they will be reloaded.
* @param manager
*/
public void attachLinkedChildren(AssetManager manager) {
detachLinkedChildren();
for (Iterator<ModelKey> it = assetLoaderKeys.iterator(); it.hasNext();) {
ModelKey assetKey = it.next();
Spatial curChild = assetChildren.get(assetKey);
if (curChild != null) {
curChild.removeFromParent();
}
Spatial child = manager.loadAsset(assetKey);
attachChild(child);
assetChildren.put(assetKey, child);
}
}
public void detachLinkedChildren() {
Set<Entry<ModelKey, Spatial>> set = assetChildren.entrySet();
for (Iterator<Entry<ModelKey, Spatial>> it = set.iterator(); it.hasNext();) {
Entry<ModelKey, Spatial> entry = it.next();
entry.getValue().removeFromParent();
it.remove();
}
}
@Override
public void read(JmeImporter e) throws IOException {
super.read(e);
InputCapsule capsule = e.getCapsule(this);
BinaryImporter importer = BinaryImporter.getInstance();
AssetManager loaderManager = e.getAssetManager();
assetLoaderKeys = (ArrayList<ModelKey>) capsule.readSavableArrayList("assetLoaderKeyList", new ArrayList<ModelKey>());
for (Iterator<ModelKey> it = assetLoaderKeys.iterator(); it.hasNext();) {
ModelKey modelKey = it.next();
AssetInfo info = loaderManager.locateAsset(modelKey);
Spatial child = null;
if (info != null) {
child = (Spatial) importer.load(info);
}
if (child != null) {
child.parent = this;
children.add(child);
assetChildren.put(modelKey, child);
} else {
Logger.getLogger(this.getClass().getName()).log(Level.WARNING, "Cannot locate {0} for asset link node {1}",
new Object[]{ modelKey, key });
}
}
}
@Override
public void write(JmeExporter e) throws IOException {
SafeArrayList<Spatial> childs = children;
children = new SafeArrayList<Spatial>(Spatial.class);
super.write(e);
OutputCapsule capsule = e.getCapsule(this);
capsule.writeSavableArrayList(assetLoaderKeys, "assetLoaderKeyList", null);
children = childs;
}
}