main.java

一个小游戏.可以在手机上用的

import javax.microedition.midlet.*;

/**
 * <p>
 * Title:
 * </p>
 * <p>
 * Description:
 * </p>
 * <p>
 * Copyright: Copyright (c) 2005
 * </p>
 * <p>
 * Company:
 * </p>
 * 非作者授权，请勿用于商业用途。
 * @author [e-mail]
 * @version 1.0
 */
import javax.microedition.lcdui.*;

public final class Main extends MIDlet implements Runnable {
	//
	// 本身引用
	static Main s_instance;

	// 记录fps值
	static int nFps = 0;

	private long nnRuntime = 0;

	private int nFrames = 0;

	private long nnStartTime = 0;

	// 游戏界面
	private MyGameCanvas myGameCanvas = null;

	// 系统事件处理
	static boolean isAppPaused = false;

	static boolean isLooping = true;

	static String strVersion = "1.0";

	static boolean isSoundOn = false;

	static boolean isMIDletStarted = false;

	Thread thread = null;
	
	//
	// 构造
	public Main() {
	}

	// 暂停
	final protected void pauseApp() {
		isAppPaused = true;
	} // void pauseApp()

	// 开始
	final protected void startApp()
			throws javax.microedition.midlet.MIDletStateChangeException {
		if (!isMIDletStarted) {
			isMIDletStarted = true;
			s_instance = this;
			try {
				strVersion = getAppProperty("MIDlet-Version");
			} // try
			catch (Exception ex) {
				ex.printStackTrace();
			} // catch
			RMSSystem.init();
			isSoundOn = RMSSystem.isSoundOn();
			myGameCanvas = new MyGameCanvas();
			RMSSystem.getBackId();
			Display.getDisplay(s_instance).setCurrent(myGameCanvas);
			thread = new Thread(s_instance);
			thread.start();
		}

	} // void startApp()

	// 销毁
	final protected void destroyApp(boolean parm1)
			throws javax.microedition.midlet.MIDletStateChangeException {
		/** @todo Implement this javax.microedition.midlet.MIDlet abstract method */
		myGameCanvas = null;
	} // void destroyApp

	/**
	 * Implement of run() method in Runnable interface.
	 */
	final public void run() {
		try {
			nnStartTime = System.currentTimeMillis();
			// while (gameThread == Thread.currentThread()) {
			while (isLooping) {
				if (Consts.SIS_SHOW_FPS) {
					// 计算FPS
					nFrames++;
					nnRuntime += System.currentTimeMillis() - nnStartTime;
					if (nnRuntime >= 1000) {
						nFps = nFrames;
						nFrames = 0;
						nnRuntime -= 1000;
					} // if
				} // if

				nnStartTime = System.currentTimeMillis();
				// if (currCanvas != null && currCanvas.isShown()) {
				if (myGameCanvas != null) {
					myGameCanvas.tick();
				} // if
				else {
					// System.out.println("Do nothing:)");
				} // else

				long timeTaken = System.currentTimeMillis() - nnStartTime;
				if (timeTaken < Consts.SN_MILLIS_PER_TICK) {
					synchronized (this) {
						Thread.sleep(Consts.SN_MILLIS_PER_TICK - timeTaken);
					} // synchronized
				} // if
				else {
					Thread.yield();
				} // else
			} // while
			if (myGameCanvas != null) {
				RMSSystem.saveSound(Main.isSoundOn);
				// SOUND
			}
			myGameCanvas = null;
			notifyDestroyed();
		} // try
		catch (InterruptedException ie) {
			ie.printStackTrace();
		} // catch
		catch (Exception e) {
			e.printStackTrace();
		} // catch

	} // run()
} // class