/*
* 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
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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*/
package com.jme3.bullet.joints;
import com.jme3.bullet.objects.PhysicsRigidBody;
import com.jme3.export.*;
import com.jme3.math.Vector3f;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* <p>PhysicsJoint - Basic Phyiscs Joint</p>
* @author normenhansen
*/
public abstract class PhysicsJoint implements Savable {
protected long objectId = 0;
protected PhysicsRigidBody nodeA;
protected PhysicsRigidBody nodeB;
protected Vector3f pivotA;
protected Vector3f pivotB;
protected boolean collisionBetweenLinkedBodys = true;
public PhysicsJoint() {
}
/**
* @param pivotA local translation of the joint connection point in node A
* @param pivotB local translation of the joint connection point in node B
*/
public PhysicsJoint(PhysicsRigidBody nodeA, PhysicsRigidBody nodeB, Vector3f pivotA, Vector3f pivotB) {
this.nodeA = nodeA;
this.nodeB = nodeB;
this.pivotA = pivotA;
this.pivotB = pivotB;
nodeA.addJoint(this);
nodeB.addJoint(this);
}
public float getAppliedImpulse() {
return getAppliedImpulse(objectId);
}
private native float getAppliedImpulse(long objectId);
/**
* @return the constraint
*/
public long getObjectId() {
return objectId;
}
/**
* @return the collisionBetweenLinkedBodys
*/
public boolean isCollisionBetweenLinkedBodys() {
return collisionBetweenLinkedBodys;
}
/**
* toggles collisions between linked bodys<br>
* joint has to be removed from and added to PhyiscsSpace to apply this.
* @param collisionBetweenLinkedBodys set to false to have no collisions between linked bodys
*/
public void setCollisionBetweenLinkedBodys(boolean collisionBetweenLinkedBodys) {
this.collisionBetweenLinkedBodys = collisionBetweenLinkedBodys;
}
public PhysicsRigidBody getBodyA() {
return nodeA;
}
public PhysicsRigidBody getBodyB() {
return nodeB;
}
public Vector3f getPivotA() {
return pivotA;
}
public Vector3f getPivotB() {
return pivotB;
}
/**
* destroys this joint and removes it from its connected PhysicsRigidBodys joint lists
*/
public void destroy() {
getBodyA().removeJoint(this);
getBodyB().removeJoint(this);
}
public void write(JmeExporter ex) throws IOException {
OutputCapsule capsule = ex.getCapsule(this);
capsule.write(nodeA, "nodeA", null);
capsule.write(nodeB, "nodeB", null);
capsule.write(pivotA, "pivotA", null);
capsule.write(pivotB, "pivotB", null);
}
public void read(JmeImporter im) throws IOException {
InputCapsule capsule = im.getCapsule(this);
this.nodeA = ((PhysicsRigidBody) capsule.readSavable("nodeA", new PhysicsRigidBody()));
this.nodeB = (PhysicsRigidBody) capsule.readSavable("nodeB", new PhysicsRigidBody());
this.pivotA = (Vector3f) capsule.readSavable("pivotA", new Vector3f());
this.pivotB = (Vector3f) capsule.readSavable("pivotB", new Vector3f());
}
@Override
protected void finalize() throws Throwable {
super.finalize();
Logger.getLogger(this.getClass().getName()).log(Level.FINE, "Finalizing Joint {0}", Long.toHexString(objectId));
finalizeNative(objectId);
}
private native void finalizeNative(long objectId);
}