feijimidlet.java

自己写的JAVA飞机飞行游戏

/*
 * FeijiMidlet.java
 * Download by http://www.codefans.net
 * Created on 2007年2月24日, 下午9:11
 */

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

/**
 *
 * @author  money
 * @version
 */
public class FeijiMidlet extends MIDlet implements CommandListener{
    private Canvas canvas=new FeijiCanvas();
    private Display display;
    private Command exit = new Command("退出", Command.EXIT,2);
    private Command ok = new Command("开始游戏", Command.OK,1);
    boolean kaishi=false;
    TextBox textbox = new TextBox("飞行游戏！","伟哥出品！请单击右下角的开始游戏，如有问题请咨询QQ154267142", 1024, TextField.ANY);
    public void startApp() {
        display=Display.getDisplay(this);
        display.setCurrent(textbox);
        textbox.addCommand(exit);
        textbox.addCommand(ok);
        textbox.setCommandListener(this);
    }
    
    public void pauseApp() {
    }
    
    public void destroyApp(boolean unconditional) {
    }
        public void commandAction(Command cmd,Displayable displayable){
            if(cmd==ok){
            display=Display.getDisplay(this);
            display.setCurrent(canvas);
            canvas.addCommand(exit);
            canvas.setCommandListener(this);
            }
        if(cmd==exit){
            destroyApp(true);
            notifyDestroyed();
        }
    }
}
class FeijiCanvas extends Canvas implements Runnable{
    boolean gameover=false;
    boolean xiancheng=true;
    boolean up=false;
    boolean down=false;
    boolean left=false;
    boolean right=false;
    int feidan1x=getHeight()/4-8;
    int feidan1y=getWidth();
    int feidan2x=getHeight()/4+getHeight()/4-30;
    int feidan2y=getWidth();
    int feidan3x=getHeight()/4+getHeight()/4+getHeight()/4-50;
    int feidan3y=0;
    int feidan4x=getHeight()/4+getHeight()/4+getHeight()/4+getHeight()/4-60;
    int feidan4y=0;
    int x=10;
    int y=getHeight()/2;
    int life =3;
    int fenshu=0;
    Image ditu=null;
    Image feidan1=null;
    Image feidan2=null;
    Image feidan3=null;
    Image feidan4=null;
    Image feiji=null;
    public FeijiCanvas(){
        try{
            ditu = Image.createImage("/tiankong.png");
            feidan1 = Image.createImage("/feidan1.PNG");
            feidan2 = Image.createImage("/feidan2.PNG");
            feidan3 = Image.createImage("/feidan3.PNG");
            feidan4 = Image.createImage("/feidan4.PNG");
            feiji = Image.createImage("/feiji.png");
        }catch(Exception e){
            System.err.println("图片错误");
        }
        Thread th = new Thread(this);//新建线程
            th.start();//开启线程
    }
    protected void paint(Graphics g){
        g.setColor(255,255,255);  
        g.fillRect(0,0,getWidth(),getHeight());//绘制方格
        g.setColor(0);
        g.drawString("生命="+life,10,10,Graphics.LEFT|Graphics.TOP);
        g.drawString("分数="+fenshu,50,10,Graphics.LEFT|Graphics.TOP);
        if(gameover){
            g.setColor(0);
            g.drawString("你死了！你得了"+fenshu+"分，希望你继续努力！",10,getHeight()-20,Graphics.LEFT|Graphics.TOP);
            xiancheng = false;
        }
        g.drawImage(ditu,getWidth()/2,getHeight()/2,Graphics.HCENTER|Graphics.VCENTER);//显示背景
        g.drawImage(feidan1,feidan1x,feidan1y,Graphics.HCENTER|Graphics.VCENTER);
        g.drawImage(feidan2,feidan2x,feidan2y,Graphics.HCENTER|Graphics.VCENTER);
        g.drawImage(feidan3,feidan3x,feidan3y,Graphics.HCENTER|Graphics.VCENTER);
        g.drawImage(feidan4,feidan4x,feidan4y,Graphics.HCENTER|Graphics.VCENTER);
        g.drawImage(feiji,x,y,Graphics.HCENTER|Graphics.VCENTER);
    }
    public void run(){
        while(xiancheng){
            if(up)y=y-2;
            if(down)y=y+2;
            if(left)x=x-2;
            if(right)x=x+2;
          feidan1y=feidan1y-3;
          feidan2y=feidan2y-5;
          feidan3y=feidan3y+5;
          feidan4y=feidan4y+7;
          repaint();
            try{Thread.sleep(50); }catch(InterruptedException e){}
          if(feidan1y<=0)feidan1y=getWidth();
          if(feidan2y<=0)feidan2y=getWidth();
          if(feidan3y>getWidth())feidan3y=0;
          if(feidan4y>getWidth())feidan4y=0;
         if(x-feiji.getWidth()/2 < feidan1x + feidan1.getWidth()/2 && x+feiji.getWidth()/2 > feidan1x - feidan1.getWidth()/2){ 
         if(y-feiji.getHeight()/2 < feidan1y + feidan1.getHeight()/2 && y+feiji.getHeight()/2 > feidan1y - feidan1.getHeight()/2){
         //碰撞后实现代码
           life=life-1;
               x=10;
               y=getHeight()/2;
           }  
           }
         if(x-feiji.getWidth()/2 < feidan2x + feidan2.getWidth()/2 && x+feiji.getWidth()/2 > feidan2x - feidan2.getWidth()/2){ 
         if(y-feiji.getHeight()/2 < feidan2y + feidan2.getHeight()/2 && y+feiji.getHeight()/2 > feidan2y - feidan2.getHeight()/2){
         //碰撞后实现代码
           life=life-1;
                          x=10;
               y=getHeight()/2;
           }  
           }
         if(x-feiji.getWidth()/2 < feidan3x + feidan3.getWidth()/2 && x+feiji.getWidth()/2 > feidan3x - feidan3.getWidth()/2){ 
         if(y-feiji.getHeight()/2 < feidan3y + feidan3.getHeight()/2 && y+feiji.getHeight()/2 > feidan3y - feidan3.getHeight()/2){
         //碰撞后实现代码
           life=life-1;
                          x=10;
               y=getHeight()/2;
           }  
           }
         if(x-feiji.getWidth()/2 < feidan4x + feidan4.getWidth()/2 && x+feiji.getWidth()/2 > feidan4x - feidan4.getWidth()/2){ 
         if(y-feiji.getHeight()/2 < feidan4y + feidan4.getHeight()/2 && y+feiji.getHeight()/2 > feidan4y - feidan4.getHeight()/2){
         //碰撞后实现代码
           life=life-1;
                          x=10;
               y=getHeight()/2;
           }  
           }
          if(life<=0){
              gameover=true;              
          }
          if(x==getWidth()){
              fenshu=fenshu+10;
               x=10;
               y=getHeight()/2;
          }
        }
    }
        protected void keyPressed(int key) {       //当键被按下使标志位为 TRUE 来改变坐标控制车运动
        int gameaction = getGameAction(key);
        switch(gameaction){
            case Canvas.UP:
            //y=y-3;
                up = true;
            break;
            case Canvas.DOWN:
            //y=y+3;
                down = true;
            break;
            case Canvas.LEFT:
           // x=x-3;
                left = true;
            break;
            case Canvas.RIGHT:
           // x=x+3;
                right=true;
            break;
            default :
        }
    }
        protected void keyReleased(int key) {//当键被松开使标志位为 FALSE 来让车停止
        int gameaction = getGameAction(key);
        switch(gameaction){
            case Canvas.UP:
            //y=y-3;
                up = false;
            break;
            case Canvas.DOWN:
            //y=y+3;
                down = false;
            break;
            case Canvas.LEFT:
           // x=x-3;
                left = false;
            break;
            case Canvas.RIGHT:
           // x=x+3;
                right=false;
            break;
            default :
        }
    }
}