gamemenu.java

Java游戏沙丘城堡源代码/Java游戏沙丘城堡源代码

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

public class GameMenu
{
	//导航器
	//设置4个常量分别代表主画面，游戏画面，帮助画面和排行榜画面
	final public static int MY_MENU = 1;
	final public static int MY_GAME = 2;
	final public static int MY_HELP = 3;
	final public static int MY_RMS = 4;
	final public static int MY_ABOUT = 5;
	final public static int MY_SET = 6;
	
	public static MIDlet midlet;
	public static Display display;
	public static int current;
	
	//流程执行，获得需要画面的对象，并显示在屏幕上
	public static void show()
	{
		switch(current)
		{
			case MY_MENU:
				display.setCurrent(MyMenu.getInstance());
				break;
			case MY_GAME:
				display.setCurrent(MyGame.getInstance());
				break;
			case MY_SET:
				display.setCurrent(MySet.getInstance());
				break;
			case MY_HELP:
				display.setCurrent(MyHelp.getInstance());
				break;
			case MY_RMS:
				display.setCurrent(MyRms.getInstance());
				break;
			case MY_ABOUT:
				display.setCurrent(MyAbout.getInstance());
				break;
		}
	}
	
	//流程控制，判断当前画面下玩家执行了哪些命令和按键事件，做出相应改变后调用流程执行的方法
	public static void flow(String cmd)
	{
		switch(current)
		{
			case MY_MENU:
				if(cmd.equals("开始"))
				{
					current = MY_GAME;
					show();
				}
				else if(cmd.equals("设置"))
				{
					current = MY_SET;
					show();
				}
				else if(cmd.equals("帮助"))
				{
					current = MY_HELP;
					show();
				}
				else if(cmd.equals("得分"))
				{
					current = MY_RMS;
					show();
				}
				else if (cmd.equals("关于"))
				{
					current = MY_ABOUT;
					show();
				}
				else if(cmd.equals("退出"))
				{
					midlet.notifyDestroyed();
					System.gc();
				}
				
				break;
			case MY_GAME:
				
			case MY_SET:
				
			case MY_HELP:
				
			case MY_RMS:
				
			case MY_ABOUT:
				if (cmd.equals("返回"))
				{
					current = MY_MENU;
					show();
				}
				break;
		}
	}
	
}