uicontroller.java

利用J2ME在手机上实现的简单的拼图游戏。

package picturepuzzle;

import javax.microedition.lcdui.Display;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.lcdui.Image;
import java.io.IOException;

/**
 * <p>Title: 拼图游戏</p>
 *
 * <p>Description: 拼图游戏</p>
 *
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: Star Group</p>
 *
 * @author wangyaobsz
 * @version 1.0
 */
public class UIController {
    //定义各类事件的ID
    public static class EventID{
        private EventID(){

        }
        public static final byte EVENT_START = 01;
        public static final byte EVENT_GAME_RUN = 02;
        public static final byte EVENT_GAME_ABORT = 03;
        public static final byte EVENT_EXIT = 04;
        public static final byte EVENT_HELP = 05;
    }

    private PicPuzzleMIDlet gameMIDlet;  //主控类对象
    private Display display;  //设备描述符

    private PicPuzzleCanvas gamedisplay;  //游戏的主界面类
    private SelectForm select;  //选择屏幕
    private HelpForm help;  //帮助信息屏幕

    public UIController(PicPuzzleMIDlet gameMIDlet) {
        this.gameMIDlet = gameMIDlet;
        this.display = Display.getDisplay(this.gameMIDlet);
        select = new SelectForm(this);
    }

    public void handleEvent(byte eventID){
        switch(eventID){
        case EventID.EVENT_START:  //创建游戏，显示选择屏幕
          display.setCurrent(select);
            break;
        case EventID.EVENT_GAME_RUN: //进入游戏
          if(gamedisplay == null){
            int nIndex = select.getImgIndex();
            try {
              Image img = Image.createImage("/res/pic" + nIndex + ".png");
              gamedisplay = new PicPuzzleCanvas(this, img);
            }
            catch (IOException e) {
              e.printStackTrace();
            }
          }
          select = null;
          help = null;
          display.setCurrent(gamedisplay);
            break;
        case EventID.EVENT_GAME_ABORT:  //用户中止当前游戏操作
          select = new SelectForm(this);
          gamedisplay = null;
          handleEvent(EventID.EVENT_START);
          break;
        case EventID.EVENT_EXIT:  //退出游戏
            this.gameMIDlet.destroyApp(false);
            this.gameMIDlet.notifyDestroyed();
            break;
        case EventID.EVENT_HELP:  //获取帮助信息
          help = new HelpForm("帮助",this);
          display.setCurrent(help);
          break;
        }
    }

}