worldtest.java

一个j2me的游戏的实现.需要添加一个mathfp类来支持浮点数.

import net.jscience.math.kvm.MathFP;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.io.IOException;

public class WorldTest extends MIDlet implements CommandListener, Runnable
{
   private GameScreen gameScreen;
   private Command quit;
   private boolean running;

   public WorldTest()
   {
      // Construct a canvas
      gameScreen = new GameScreen();

      // And a way to quit
      quit = new Command("Quit", Command.EXIT, 2);
      gameScreen.addCommand(quit);

      gameScreen.setCommandListener(this);

      running = true;
      Thread t = new Thread(this);
      t.start();
   }

   public void run()
   {
      while (running)
      {
         gameScreen.repaint();
         gameScreen.cycle();

         try
         {
            Thread.sleep(100);
         }
         catch (InterruptedException e)
         {
         }

      }
   }

   protected void startApp() throws MIDletStateChangeException
   {
      Display.getDisplay(this).setCurrent(gameScreen);
   }

   protected void pauseApp()
   {
   }

   protected void destroyApp(boolean unconditional)
           throws MIDletStateChangeException
   {
   }

   public void commandAction(Command command, Displayable displayable)
   {
      try
      {
         if (command == quit)
         {
            running = false;
            destroyApp(true);
            notifyDestroyed();
         }
      }

      catch (MIDletStateChangeException me)
      {
         System.out.println(me + " caught.");
      }
   }

}