mycanvas.java

java手机游戏

import java.io.IOException;

import javax.microedition.lcdui.*;

public class myCanvas extends Canvas{
	public Image imbk;
	public Image imPlayer;
	public int  px,py;
	public myCanvas(){
		try {
			imbk=Image.createImage("/bk.png");
			imPlayer=Image.createImage("/player.png");
			px=py=30;
		} catch (Exception e) {
			System.out.println("pic error");
		}
	}
	protected void paint(Graphics g) {
		g.drawImage(imbk, 0, 0, Graphics.LEFT|Graphics.TOP);
		g.drawImage(imPlayer, px, py, Graphics.LEFT|Graphics.TOP);
		
	}
	public void keyPressed(int n){
		System.out.println("n="+n);
		if(n==Canvas.KEY_NUM4||n==-3){
			px-=8;
		}
		if(n==Canvas.KEY_NUM6||n==-4){
			px+=8;
		}
		if(n==Canvas.KEY_NUM2||n==-1){
			py-=8;
		}
		if(n==Canvas.KEY_NUM8||n==-2){
			py+=8;
		}
		this.repaint();
		this.serviceRepaints();
	}
	public void keyReleased(int n){
		
	}
	
}