Filter.java

/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.physics.box2d;

/**
 * This holds contact filtering data.
 * 
 * @author mzechner
 */
public class Filter {
	/** The collision category bits. Normally you would just set one bit. */
	public short categoryBits = 0x0001;

	/** The collision mask bits. This states the categories that this shape would accept for collision. */
	public short maskBits = -1;

	/**
	 * Collision groups allow a certain group of objects to never collide (negative) or always collide (positive). Zero
	 * means no collision group. Non-zero group filtering always wins against the mask bits.
	 */
	public short groupIndex = 0;
}