hole.java

来自「一些JAVA的小程序」· Java 代码 · 共 25 行

import java.awt.*;

public class Hole extends Ball implements PinBallTarget
{
	public Hole (int x, int y)
	{
		super(new Point(x, y), 12);
		setColor(Color.black);
	}

	public boolean intersects (PinBall aBall)
	{
		double dx = aBall.x() - x();
                double dy = aBall.y() - y();
                double r = 2 * radius();
                return(-r < dx) && (dx < r) && (-r < dy) && (dy < r);
	}

	public void hitBy (PinBall aBall)
	{
		aBall.moveTo(0, PinBallGame.FrameHeight + 30);
		aBall.setMotion(0, 0);
	}
}