java 手機游戲 賽車

import javax.microedition.lcdui.Command; import javax.microedition.lcdui.CommandListener; import javax.microedition.lcdui.Displayable; import javax.microedition.lcdui.Graphics; import javax.microedition.lcdui.Image; import javax.microedition.lcdui.game.GameCanvas; import javax.microedition.lcdui.game.Sprite; public class MainCanvas extends GameCanvas implements Runnable, CommandListener{ public static final int GAME_UI = 0; //进入用户界面 public static final int GAME_GAMING = 1; //进行游戏 public static final int GAME_BUTTON = 2; //游戏时显示界面按钮 public static final int GAME_END = 3; //游戏结束 public static final int GAME_STATE_NUM = 4; //状态总数 private int m_nState = GAME_UI; //存储当前的游戏状态 private boolean m_bRunning; //控制线程运行 private MyUI m_UI; //界面对象 private Sprite m_TextSp; //图形文字对象 private Scene m_Scene; //场景对象 private Command MenuCommand; //高级按钮对象 public MainCanvas( ){ super(true); try{ //创建用户界面，并设置界面中的按钮 MyButton button = new MyButton(41, 21, 0, 1, -1, -1, -1, 2); m_UI = new MyUI(button); } catch(Exception exception){} setState(GAME_UI); Start(); } //重新开牌 private void Reset(){ //创建场景对象 if( m_Scene == null ) m_Scene = new Scene(getWidth(), getHeight()); m_Scene.Reset(); if( MenuCommand == null ){ //创建菜单 MenuCommand = new Command("Menu", Command.OK, 0); addCommand(MenuCommand); setCommandListener(this); } if( m_TextSp == null ){ //创建图形文字对象 try{ Image img = Image.createImage("/demo/text.png"); m_TextSp = new Sprite(img, 82, 25); m_TextSp.defineReferencePixel(41, 23); int x = getWidth()/2; int y = getHeight()/2 - 10; m_TextSp.setRefPixelPosition(x, y); } catch(Exception exception){} } } private void setState( int state ){ //设置游戏状态 if( state < 0 || state >= GAME_STATE_NUM ) return; m_nState = state; switch( m_nState ){ case GAME_UI: //进入用户界面 m_UI.setState(MyUI.UI_TITLE); //显示标题界面 //设置本游戏的按钮类型，本游戏有:开始及退出两种按钮 m_UI.getButton().setShow(true, false, false, false, false, true ); break; case GAME_BUTTON: //在游戏中途显示按钮 m_UI.setState(MyUI.UI_BUTTON); //游戏中途，显示复位与退出按钮 m_UI.getButton().setShow(false, true, false, false, false, true ); break; case GAME_GAMING: //正在游戏 m_UI.setState(MyUI.UI_HIDE); break; case GAME_END: //游戏结束 m_UI.setState(MyUI.UI_HIDE); break; } } public void Start(){ m_bRunning = true; Thread thread = new Thread(this); //分配新线程 thread.start(); //线程启动 } public void run() { //得到系统当前时间,并将时间换算成毫秒 long T1 = System.currentTimeMillis(); long T2 = T1; while(m_bRunning){ T2 = System.currentTimeMillis(); if( T2 - T1 > 50 ){ //间隔50毫秒 T1 = T2; Input(); Logic(); Paint(); } } } public void Stop(){ m_bRunning = false; } public void Input(){ int keyStates = getKeyStates(); switch( m_nState ){ case GAME_UI: { switch( m_UI.Input( keyStates ) ){ case MyButton.BUTTON_START: //按下开始键 Reset(); setState(GAME_GAMING); break; case MyButton.BUTTON_EXIT: //按下退出键 RacingMidlet.midlet.notifyDestroyed(); break; } } break; case GAME_GAMING: //游戏中 m_Scene.Input(keyStates); break; case GAME_BUTTON: //游戏中途显示按钮 { switch( m_UI.Input( keyStates ) ){ case MyButton.BUTTON_RESET: //按下复位键 Reset(); setState(GAME_GAMING); break; case MyButton.BUTTON_EXIT: //按下退出键 RacingMidlet.midlet.notifyDestroyed(); break; } } break; case GAME_END: if( ( keyStates & GameCanvas.FIRE_PRESSED ) != 0 ){ Reset(); setState(GAME_GAMING); } break; } } public void Logic(){ switch( m_nState ){ case GAME_GAMING: int n = m_Scene.Logic(getWidth(), getHeight()); if( n < 0 ){ m_TextSp.setFrame(1); setState(GAME_END); } if( n > 0 ){ m_TextSp.setFrame(0); setState(GAME_END); } break; } } public void Paint(){ Graphics g = getGraphics(); //用黑色清屏 g.setColor(0); g.fillRect( 0, 0, getWidth(), getHeight() ); g.setColor(0xFFFF0000); switch( m_nState ){ case GAME_UI: //显示界面 m_UI.Paint(g, getWidth(), getHeight()); break; case GAME_GAMING: //显示游戏画面 case GAME_BUTTON: case GAME_END: m_Scene.Paint(g); if( m_nState == GAME_END ) m_TextSp.paint(g); m_UI.Paint(g, getWidth(), getHeight()); break; } flushGraphics(); } public void commandAction(Command c, Displayable s){ if( c == MenuCommand ){ switch( m_nState ){ case GAME_END: //游戏结束，显示按钮 case GAME_GAMING: //正在游戏，显示按钮 setState(GAME_BUTTON); break; case GAME_BUTTON: //正显示按钮，退回游戏 setState(GAME_GAMING); break; default: break; } } } }