/*
* 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.bullet.control;
import com.jme3.bullet.PhysicsSpace;
import com.jme3.export.InputCapsule;
import com.jme3.export.JmeExporter;
import com.jme3.export.JmeImporter;
import com.jme3.export.OutputCapsule;
import com.jme3.math.Quaternion;
import com.jme3.math.Vector3f;
import com.jme3.renderer.RenderManager;
import com.jme3.renderer.ViewPort;
import com.jme3.scene.Spatial;
import java.io.IOException;
/**
* AbstractPhysicsControl manages the lifecycle of a physics object that is
* attached to a spatial in the SceneGraph.
*
* @author normenhansen
*/
public abstract class AbstractPhysicsControl implements PhysicsControl {
private final Quaternion tmp_inverseWorldRotation = new Quaternion();
protected Spatial spatial;
protected boolean enabled = true;
protected boolean added = false;
protected PhysicsSpace space = null;
protected boolean applyLocal = false;
/**
* Called when the control is added to a new spatial, create any
* spatial-dependent data here.
*
* @param spat The new spatial, guaranteed not to be null
*/
protected abstract void createSpatialData(Spatial spat);
/**
* Called when the control is removed from a spatial, remove any
* spatial-dependent data here.
*
* @param spat The old spatial, guaranteed not to be null
*/
protected abstract void removeSpatialData(Spatial spat);
/**
* Called when the physics object is supposed to move to the spatial
* position.
*
* @param vec
*/
protected abstract void setPhysicsLocation(Vector3f vec);
/**
* Called when the physics object is supposed to move to the spatial
* rotation.
*
* @param quat
*/
protected abstract void setPhysicsRotation(Quaternion quat);
/**
* Called when the physics object is supposed to add all objects it needs to
* manage to the physics space.
*
* @param space
*/
protected abstract void addPhysics(PhysicsSpace space);
/**
* Called when the physics object is supposed to remove all objects added to
* the physics space.
*
* @param space
*/
protected abstract void removePhysics(PhysicsSpace space);
public boolean isApplyPhysicsLocal() {
return applyLocal;
}
/**
* When set to true, the physics coordinates will be applied to the local
* translation of the Spatial
*
* @param applyPhysicsLocal
*/
public void setApplyPhysicsLocal(boolean applyPhysicsLocal) {
applyLocal = applyPhysicsLocal;
}
protected Vector3f getSpatialTranslation() {
if (applyLocal) {
return spatial.getLocalTranslation();
}
return spatial.getWorldTranslation();
}
protected Quaternion getSpatialRotation() {
if (applyLocal) {
return spatial.getLocalRotation();
}
return spatial.getWorldRotation();
}
/**
* Applies a physics transform to the spatial
*
* @param worldLocation
* @param worldRotation
*/
protected void applyPhysicsTransform(Vector3f worldLocation, Quaternion worldRotation) {
if (enabled && spatial != null) {
Vector3f localLocation = spatial.getLocalTranslation();
Quaternion localRotationQuat = spatial.getLocalRotation();
if (!applyLocal && spatial.getParent() != null) {
localLocation.set(worldLocation).subtractLocal(spatial.getParent().getWorldTranslation());
localLocation.divideLocal(spatial.getParent().getWorldScale());
tmp_inverseWorldRotation.set(spatial.getParent().getWorldRotation()).inverseLocal().multLocal(localLocation);
localRotationQuat.set(worldRotation);
tmp_inverseWorldRotation.set(spatial.getParent().getWorldRotation()).inverseLocal().mult(localRotationQuat, localRotationQuat);
spatial.setLocalTranslation(localLocation);
spatial.setLocalRotation(localRotationQuat);
} else {
spatial.setLocalTranslation(worldLocation);
spatial.setLocalRotation(worldRotation);
}
}
}
public void setSpatial(Spatial spatial) {
if (this.spatial != null && this.spatial != spatial) {
removeSpatialData(this.spatial);
} else if (this.spatial == spatial) {
return;
}
this.spatial = spatial;
if (spatial == null) {
return;
}
createSpatialData(this.spatial);
setPhysicsLocation(getSpatialTranslation());
setPhysicsRotation(getSpatialRotation());
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
if (space != null) {
if (enabled && !added) {
if (spatial != null) {
setPhysicsLocation(getSpatialTranslation());
setPhysicsRotation(getSpatialRotation());
}
addPhysics(space);
added = true;
} else if (!enabled && added) {
removePhysics(space);
added = false;
}
}
}
public boolean isEnabled() {
return enabled;
}
public void update(float tpf) {
}
public void render(RenderManager rm, ViewPort vp) {
}
public void setPhysicsSpace(PhysicsSpace space) {
if (space == null) {
if (this.space != null) {
removePhysics(this.space);
added = false;
}
} else {
if (this.space == space) {
return;
} else if (this.space != null) {
removePhysics(this.space);
}
addPhysics(space);
added = true;
}
this.space = space;
}
public PhysicsSpace getPhysicsSpace() {
return space;
}
@Override
public void write(JmeExporter ex) throws IOException {
OutputCapsule oc = ex.getCapsule(this);
oc.write(enabled, "enabled", true);
oc.write(applyLocal, "applyLocalPhysics", false);
oc.write(spatial, "spatial", null);
}
@Override
public void read(JmeImporter im) throws IOException {
InputCapsule ic = im.getCapsule(this);
enabled = ic.readBoolean("enabled", true);
spatial = (Spatial) ic.readSavable("spatial", null);
applyLocal = ic.readBoolean("applyLocalPhysics", false);
}
}