GameShape.java

/*
 *
 * (c)2010 Lein-Mathisen Digital
 * http://lmdig.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
 *
 */

package com.lmdig.android.tutorial.oglbox2dbasics.geometry;

import org.jbox2d.common.Vec2;
import org.jbox2d.dynamics.BodyDef;

import com.kristianlm.robotanks.box2dbridge.IBody;
import com.kristianlm.robotanks.box2dbridge.IShape;
import com.kristianlm.robotanks.box2dbridge.IWorld;

abstract public class GameShape {
	
	IBody body;
	IShape shape;
	Vec2 shapePosition;
	
	public static GameShape create(GLRectangle rect) {
		return new GameShapeRectangle(rect);
	}
	
	public static GameShape create(GLCircle circle) {
		return new GameShapeCircle(circle);
	}
	
	abstract public void draw();
	
	
	abstract public IShape attachToBody(IBody body, Vec2 position, float density);
	
	public IBody attachToNewBody(IWorld world, Vec2 position, float density) {
		BodyDef def = new BodyDef();
		def.angularDamping = 0.5f;
		def.linearDamping = 0.5f;
		def.allowSleep = false;
		body = world.createBody(def);
		
		attachToBody(body, position, density);
		
		body.refilter(0xFFFF, 0xFFFF, 0);

		return body;
	}
	
	public void detachFromBody(IBody body) {
		body.destroyShape(shape);
		shape = null;
		body = null;
	}
	
	public void detachBody(IWorld world) {
		world.destroyBody(body);
		body = null;
	}
	
	

}