block.java

这是一个j2me开发的俄罗斯方块的代码,不错的啊

package hujkay;

import hujkay.record.*;
import hujkay.game.*;
import hujkay.menu.*;
import hujkay.help.*;

import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.lcdui.*;
import java.lang.*;

public class Block extends MIDlet {


	//定义程序运行的状态

	
	private Display display ;
	private static Block block ;
	
	///////////////////////
	private RecordCanvas recordcanvas = null;
	private GameCanvas gamecanvas  = null;
	private MenuCanvas menucanvas = null;
	private HelpCanvas helpcanvas = null;
	
	public Block()
	{
		display = Display.getDisplay(this) ;
		block = this ;
		menucanvas = new MenuCanvas(this);
		display.setCurrent(menucanvas) ;
		
	}
	
	protected void startApp() throws MIDletStateChangeException {
		// TODO Auto-generated method stub
		

	}

	protected void pauseApp() {
		// TODO Auto-generated method stub

	}

	protected void destroyApp(boolean arg0)/* throws MIDletStateChangeException */{
		// TODO Auto-generated method stub

	}
	
	public void ErrProcess()
	{
		destroyApp(false);
		this.notifyDestroyed() ;
	}
	
	public void start0(int source)
	{
		//这是启动菜单
		/*
		 *  * source代表发送事件的来源
		 * 0   菜单
		 * 1  游戏
		 * 2  记录
		 * 3  帮助
		 *
		 */
		/*private RecordCanvas recordcanvas = null;
		private GameCanvas gamecanvas  = null;
		private MenuCanvas menucanvas = null;
		private HelpCanvas helpcanvas = null;*/
		/*
		 * 
		 if(menucanvas != null)
			menucanvas = null ;
		if( helpcanvas != null)
			helpcanvas = null ;
		if( gamecanvas != null)
			gamecanvas = null ;
		if( recordcanvas != null)
			recordcanvas = null ;
		*/
		menucanvas = new MenuCanvas(this);
		display.setCurrent(menucanvas) ;
		if( helpcanvas != null)
			helpcanvas = null ;
		if( gamecanvas != null)
			gamecanvas = null ;
		if( recordcanvas != null)
			recordcanvas = null ;
		
	}
	
	public void start1(int source)
	{
		/*0   启动菜单
		 * 1   启动游戏
		 * 2   启动记录
		 * 3   启动帮助
		 * 4	退出游戏
		 * 
		 * source代表发送事件的来源
		 * 0   菜单
		 * 1  游戏
		 * 2  记录
		 * 3  帮助
		 */
		gamecanvas = new GameCanvas(this);
		display.setCurrent(gamecanvas);
		if(menucanvas != null)
			menucanvas = null ;
		if( helpcanvas != null)
			helpcanvas = null ;
		if( recordcanvas != null)
			recordcanvas = null ;
	}
	
	public void start2(int source)
	{
		/*0   启动菜单
		 * 1   启动游戏
		 * 2   启动记录
		 * 3   启动帮助
		 * 4	退出游戏
		 * 
		 * source代表发送事件的来源
		 * 0   菜单
		 * 1  游戏
		 * 2  记录
		 * 3  帮助
		 */
		if(source == 0)
			recordcanvas = new RecordCanvas(this,0);
		else 
			recordcanvas = new RecordCanvas(this,gamecanvas.getscore());
		display.setCurrent(recordcanvas);
		if(menucanvas != null)
			menucanvas = null ;
		if( helpcanvas != null)
			helpcanvas = null ;
		if( gamecanvas != null)
			gamecanvas = null ;
		if( recordcanvas != null)
			recordcanvas = null ;
	}
	
	public void start3(int source)
	{
		/*0   启动菜单
		 * 1   启动游戏
		 * 2   启动记录
		 * 3   启动帮助
		 * 4	退出游戏
		 * 
		 * source代表发送事件的来源
		 * 0   菜单
		 * 1  游戏
		 * 2  记录
		 * 3  帮助
		 */
		helpcanvas = new HelpCanvas(this);
		display.setCurrent(helpcanvas);
		if(menucanvas != null)
			menucanvas = null ;
		if( gamecanvas != null)
			gamecanvas = null ;
		if( recordcanvas != null)
			recordcanvas = null ;
	}
	
	public void start4( int source)
	{
		/*0   启动菜单
		 * 1   启动游戏
		 * 2   启动记录
		 * 3   启动帮助
		 * 4	退出游戏
		 * 
		 * source代表发送事件的来源
		 * 0   菜单
		 * 1  游戏
		 * 2  记录
		 * 3  帮助
		 */
		this.destroyApp(false);
		this.notifyDestroyed() ;
	}
	
	public void mangeaction( int event , int source)
	{
		//event 代表事件
		/*0   启动菜单
		 * 1   启动游戏
		 * 2   启动记录
		 * 3   启动帮助
		 * 4	退出游戏
		 * 
		 * source代表发送事件的来源
		 * 0   菜单
		 * 1  游戏
		 * 2  记录
		 * 3  帮助
		 */
		switch( event)
		{
		case 0:  //启动菜单menu
			start0(source) ; break ;
		case 1: //启动游戏game
			start1(source) ;break ;
		case 2: // 启动记录record
			start2(source) ;break ;
		case 3://启动帮助
			start3(source) ;break ;
		case 4://退出游戏
			start4(source) ;break ;
		}
	}

}