carsprite.java

星空大战,小车发出子弹打空中的飞行物。空中飞行物也 能发出子弹袭击小车。

import java.util.Enumeration;
import java.util.Vector;

import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.Sprite;

//汽车
public class CarSprite extends Sprite
{
	private int dx;
	private int dy;
	

	
	public CarSprite()
    {
	    super(SpaceCanvas.sc.getImgCar());
    }	
	
	public void die()
	{
		dx = 0;
		dy = 0;
		setPosition(0, SpaceCanvas.sc.getHeight()-getHeight()-10);
	}
	
	public void update()
	{
		move(dx, dy);
		checkBounds();
	}
	
	public void checkBounds() 
	{
		if (getX() < 0)
			setPosition(0, getY());
		else if (getX() > (SpaceCanvas.sc.getWidth() - getWidth()))
			setPosition(SpaceCanvas.sc.getWidth() - getWidth(), getY());
		
		if (getY() < 0)
			setPosition(getX(), 0);
		else if (getY() > (SpaceCanvas.sc.getHeight() - getHeight()))
			setPosition(getX(), SpaceCanvas.sc.getHeight() - getHeight());
	}
	
	
	public void setDx(int dx)
	{
		this.dx = dx;
	}
	
	public void setDy(int dy)
	{
		this.dy = dy;
	}
	
}