/* * GolfBallNoiseSim.java */package EDU.gatech.cc.is.simulation;import java.awt.*;import EDU.gatech.cc.is.util.Vec2;import EDU.gatech.cc.is.util.Units;/** * A noisy golfball for RoboCup Soccer. * <B>Introduction</B><BR> * GolfBallNoiseSim implements a golf ball for RoboCup * soccer simulations.  The ball is also the scorekeeper and  * the referee; after all who would know better whether a  * scoring event occured? * <P> * A "shot clock" keeps track of how long since a scoring * event occured.  If it times-out, the ball is reset to the * center of the field. * <P> * Copyright (c)2000 Tucker Balch * * @author Tucker Balch * @version $Revision: 1.2 $ */public class GolfBallNoiseSim extends GolfBallSim 	{	private final static double NOISE_MAG = 0.1;	/**	 * Handle a push.  This is how to kick or push the ball.	 */        public void push(Vec2 d, Vec2 v)                {                /*--- move according to the push ---*/                position.add(d);		velocity = new Vec2(v.x, v.y);		velocity.sett(velocity.t + (rando.nextDouble()*NOISE_MAG));                }	}