brick.java

java编的模拟一个小球的非弹性碰撞

import java.awt.*;

public class Brick
{
	int x,y,width,height;
    Color color;
	
	public Brick(int x,int y,int width,int height)
	{
		this.x=x;
		this.y=y;
		this.width=width;
		this.height=height;
		color=new Color(160,24,10);
	}
	
	public void setForeColor(Color color)
	{
		this.color=color;
	}
	
	public void draw(Graphics g)
	{
		Color colorOld=g.getColor();
		g.setColor(color);
		g.fillRect(x+1,y+1,width-2,height-2);
		g.setColor(Color.white);
		g.drawLine(x,y,x+width,y);
		g.drawLine(x,y+1,x,y+height-2);
		
		g.setColor(new Color(128,128,128));
		g.drawLine(x+1,y+height-2,x+width-3,y+height-2);
		g.drawLine(x+width-2,y+1,x+width-2,y+height-2);
		
		g.setColor(Color.black);
		g.drawLine(x,y+height-1,x+width-1,y+height-1);
		g.drawLine(x+width-1,y,x+width-1,y+height-1);
		g.setColor(colorOld);
	}
	
	public void cutLeft(Graphics g)
	{
		Color colorOld=g.getColor();
		g.setColor(color);
		g.fillRect(x,y+1,width-1,height-2);
		g.setColor(Color.white);
		g.drawLine(x,y,x+width-2,y);
		
		g.setColor(new Color(128,128,128));
		g.drawLine(x,y+height-2,x+width-3,y+height-2);
		g.drawLine(x+width-2,y+1,x+width-2,y+height-2);
		
		g.setColor(Color.black);
		g.drawLine(x,y+height-1,x+width-1,y+height-1);
		g.drawLine(x+width-1,y,x+width-1,y+height-1);
		g.setColor(colorOld);
	}
	
	public void cutRight(Graphics g)
	{
		
		Color colorOld=g.getColor();
		g.setColor(color);
		g.fillRect(x+1,y+1,width-1,height-2);
		g.setColor(Color.white);
		g.drawLine(x,y,x+width-1,y);
		g.drawLine(x,y+1,x,y+height-2);
		
		g.setColor(new Color(128,128,128));
		g.drawLine(x+1,y+height-2,x+width-1,y+height-2);		
		
		g.setColor(Color.black);
		g.drawLine(x,y+height-1,x+width-1,y+height-1);
		g.setColor(colorOld);
	}
}