splash.java

类似于推箱子的手机游戏源码

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
/*
 * Splash.java
 *
 * Created on 2007年10月19日, 下午3:10
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

/**
 *
 * @author liang
 */
public class Splash extends Canvas implements Runnable{
    
    /** Creates a new instance of Splash */
    private final Hunt_Midlet midlet;                     //主类
    private Image splashImage;                          //游戏闪屏图片(100*53)
    private volatile boolean dismissed = false;       //是否消除闪屏
    //此处volatile使dismissed的状态一旦改变，立即响应
    
    /** Creates a new instance of SplashScreen */
    public Splash(Hunt_Midlet midlet) {
        this.midlet = midlet;
        setFullScreenMode(true);                            //设置为全屏模式
        splashImage = ImageTools.createImage("/splash.png"); //加载闪屏图片
        new Thread(this).start();                           //开启闪屏线程
    }
    
    public void run(){  
        synchronized(this){   //此处加同步锁的作用是防止此线程在wait(4000L)时，其它线程启动
            try{
                wait(3000L);                                //显示4秒
            }catch(InterruptedException e){}
            dismiss();                                      //消除闪屏
        }
    }
    
    public void paint(Graphics g){
        int CanvasWidth = getWidth();
        int CanvasHeight = getHeight();
        g.setColor(0x00000000);                         //画笔颜色
        g.fillRect(0,0,getWidth(), getHeight());      //填充屏幕
        if(splashImage != null){
            g.drawImage(splashImage, CanvasWidth/2, CanvasHeight/2-20,
                        Graphics.VCENTER|Graphics.HCENTER);
            splashImage = null;                         //释放图片资源用于垃圾回收
        }   
        g.setColor(0x00969696);
        g.setFont(Font.getFont(Font.FACE_PROPORTIONAL,Font.STYLE_BOLD,Font.SIZE_LARGE));
        g.drawString("小胖工作组", CanvasWidth/2, CanvasHeight/2+18, Graphics.HCENTER|Graphics.TOP);
        midlet.splashScreenPainted();                  //告知主类闪屏绘制完毕可以开始初始化
    }
    
    public synchronized void keyPressed(int keyCode){//
        dismiss();                                      //按下任意键取消闪屏
    }
    /** 取消闪屏 */
    public void dismiss(){
        if(!dismissed){
            dismissed = true;
            midlet.splashScreenDone();                 //取消闪屏，告知主类显示菜单
        }
    }    
}