/*******************************************************************************
 * Copyright (c) 2013, Daniel Murphy
 * 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.
 * 
 * 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 HOLDER 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 org.jbox2d.dynamics.joints;

import java.util.ArrayList;

import org.jbox2d.dynamics.Body;

/**
 * Definition for a {@link ConstantVolumeJoint}, which connects a group a bodies together
 * so they maintain a constant volume within them.
 */
public class ConstantVolumeJointDef extends JointDef {
	public float frequencyHz;
	public float dampingRatio;
	
	ArrayList<Body> bodies;
	ArrayList<DistanceJoint> joints;
	
	public ConstantVolumeJointDef() {
		type = JointType.CONSTANT_VOLUME;
		bodies = new ArrayList<Body>();
		joints = null;
		collideConnected = false;
		frequencyHz = 0.0f;
		dampingRatio = 0.0f;
	}
	
	/**
	 * Adds a body to the group
	 * @param argBody
	 */
	public void addBody(Body argBody) {
	  bodies.add(argBody);
		if (bodies.size() == 1) {
			bodyA = argBody;
		}
		if (bodies.size() == 2) {
			bodyB = argBody;
		}
	}
	
	/**
	 * Adds a body and the pre-made distance joint.  Should only
	 * be used for deserialization.
	 */
	public void addBodyAndJoint(Body argBody, DistanceJoint argJoint){
	  addBody(argBody);
	  if(joints == null){
	    joints = new ArrayList<DistanceJoint>();
	  }
	  joints.add(argJoint);
	}
}
