赛车手机游戏实训报告

} } } } public void hideNotify() { synchronized (executionLock) { paused = true; //暂停 } } public void initialize() { view[X] = 0; view[Y] = 0; view[WIDTH] = getWidth(); view[HEIGHT] = getHeight(); loader = new Hero(); loader.load(); hero = loader.getHero(); hero.defineCollisionRectangle( 0, 0, hero.getWidth(), hero.getHeight());//定义人物与障碍物的碰撞 map = new Map(); //在地图中插入人物hero map.insert(hero, 0); map.setViewWindow(0, 0, getWidth(), getHeight());//设置视窗的位置 int[] size = getWorldSize(); WORLD_WIDTH = size[0]; WORLD_HEIGHT = size[1]; initialized = true; //设置视窗的位置 } private int[] getWorldSize() { int width = 0; int height = 0; for (int i = 0; i < map.getSize(); i++) { Layer layer = map.getLayerAt(i); if(layer.getWidth() > width) width = layer.getWidth(); if(layer.getHeight() > height) height = layer.getHeight(); } return new int[]{width, height}; } public void start() { thread = new Thread(this); thread.start(); } public void stop() { initialized = false; thread = null; } public void run() { Graphics g = getGraphics(); while (initialized) { synchronized (executionLock) { if (paused) { try { wait(); } catch (Exception e) //捕捉异常 { } } } int keyState = getKeyStates();//设置键盘状态 if ((keyState & LEFT_PRESSED) != 0) { if (lastState != LEFT_PRESSED) { lastState = LEFT_PRESSED; //设置键盘状态为按左键 hero.setFrameSequence(new int[] { 0});//设置人物的帧序列 } else { hero.nextFrame(); } if(hero.getX() - STEP >= 0) hero.move(-STEP, 0); else hero.setPosition(0, hero.getY()); } else if ((keyState & RIGHT_PRESSED) != 0) { if (lastState != RIGHT_PRESSED) { lastState = RIGHT_PRESSED; hero.setFrameSequence(new int[] { 0}); } else { hero.nextFrame(); } if(hero.getX() + hero.getWidth() < WORLD_WIDTH) hero.move(STEP, 0); else hero.setPosition(WORLD_WIDTH-hero.getWidth(), hero.getY());//设 置人物显示的位置 } else if ((keyState & UP_PRESSED) != 0) { if (lastState != UP_PRESSED) { lastState = UP_PRESSED; hero.setFrameSequence(new int[] { 0 }); } else { hero.nextFrame();//显示人物的下一帧 } if(hero.getY() - STEP >= 0) hero.move(0, -STEP); else hero.setPosition(hero.getX(), 0); } else if ((keyState & DOWN_PRESSED) != 0) { if (lastState != DOWN_PRESSED) { lastState = DOWN_PRESSED; hero.setFrameSequence(new int[] { 0}); } else { hero.nextFrame(); } if(hero.getY() + hero.getHeight() < WORLD_HEIGHT) hero.move(0, STEP); else hero.setPosition(hero.getX(), WORLD_HEIGHT-hero.getHeight()); } checkCollision(lastState); //检查碰撞 // Next scroll the view if needed if (hero.getX() < view[X] + hero.getWidth()) { int dx = (view[X] - hero.getX() + hero.getWidth());//定义并初始化dx if (view[X] - dx >= 0) { view[X] -= dx; }//设置视窗的横坐标 } else if ( hero.getX() + hero.getWidth() > (view[X] + view[WIDTH]) - hero.getWidth()) { int dx = (hero.getX() + hero.getWidth()) - (view[X] + view[WIDTH] - hero.getWidth());//定义并初始化dx 的值 if(view[X] + view[WIDTH] <= WORLD_WIDTH) { view[X] += dx; } } if (hero.getY() < view[Y] + hero.getHeight()) // scoll up { int dy = (view[Y] - hero.getY() + hero.getHeight()); if (view[Y] - dy >= 0) { view[Y] -= dy; } } else if ( hero.getY() + hero.getHeight() > (view[Y] + view[HEIGHT]) - hero.getHeight()) // scroll down { int dy = (hero.getY() + hero.getHeight()) - (view[Y] + view[HEIGHT] - hero.getHeight()); if(view[Y] + view[HEIGHT] <= WORLD_HEIGHT) { view[Y] += dy; } } map.setViewWindow( view[X], view[Y], view[WIDTH], //设置视窗的大小 view[HEIGHT]); map.paint(g, 0, 0); //绘制地图 g.drawString(scoreStr, 180, 50, Graphics.TOP|Graphics.RIGHT); g.drawString(String.valueOf(score), 160, 70, Graphics.TOP|Graphics.RIGHT); //绘制得分 flushGraphics();//刷新 try { Thread.sleep(100); //线程休眠 } catch (Exception e) //捕捉异常 { e.printStackTrace(); } } } private void checkCollision(int key) { if (hero.collidesWith((TiledLayer) map.getLayerAt(1), true))/ /主人公和上层地图 进行像素级碰撞检测 { if (key == LEFT_PRESSED) //设置按键状态为左键 hero.move(STEP, 0); //人物向X轴正方向移动 else if (key == RIGHT_PRESSED) hero.move(-STEP, 0); else if (key == UP_PRESSED) hero.move(0, STEP); else hero.move(0, -STEP); score--; } } public void paint(Graphics g) //绘制屏幕 { if (!initialized) { initialize(); if (thread == null) { start();//线程开始 } } //调用paint(g)方法 super.paint(g); } } Hero import javax.microedition.lcdui.Image; import javax.microedition.lcdui.game.Sprite; public class Hero { private Image image; public Hero() { } public void load() { try { image = Image.createImage("/car2.png");//加载图片，创建不变图像 } catch (Exception e) //捕捉异常 { e.printStackTrace(); } } public Sprite getHero() { Image tmp = null; try { tmp = Image.createImage(image, 0, 0, 24, 35, Sprite.TRANS_NONE);//创建不变图像 } catch (Exception e) { e.printStackTrace(); } Sprite hero = new Sprite(tmp, 24, 35); //创建Sprite精灵 return hero; //返回hero值 } } import javax.microedition.lcdui.game.LayerManager; import javax.microedition.lcdui.Image; import javax.microedition.lcdui.game.TiledLayer; public class Map extends LayerManager//继承父类LayerManager { int[] GroundLayer_cells = new int[] { //创建GroundLayer_cells整型数组 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5, 1, 2, 2, 3, 2, 2, 3, 2, 2, 5, 1, 2, 2, 4, 2, 2, 4, 2, 2, 5}; int[] TreeLayer_cells = new int[] {//创建TreeLayer_cells整型数组 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; Image TreeLayer_tiles; TiledLayer TreeLayer; Image GroundLayer_tiles; TiledLayer GroundLayer; public Map() { try { Init(); } catch (Exception ex) { } } void Init() throws Exception//抛出异常 { TreeLayer_tiles = Image.createImage("/map.png");//加载地图图片 TreeLayer = new TiledLayer(10, 20, TreeLayer_tiles, 24, 35); //创建TiledLayer 对象TreeLayer GroundLayer_tiles = Image.createImage("/map.png"); //船检TiledLayer GroundLayer = new TiledLayer(10, 20, GroundLayer_tiles, 24, 35);对象GroundLayer fillLayer(TreeLayer, TreeLayer_cells); fillLayer(GroundLayer, GroundLayer_cells); append(TreeLayer); //添加地图图片 append(GroundLayer); //添加图片 } void fillLayer(TiledLayer layer, int[] cells) { for(int row=0; row < layer.getRows(); row++) { for(int col=0; col < layer.getColumns(); col++) { layer.setCell(col, row, cells[row * layer.getColumns() + col]); //填充地 图 } } } } 程序各模块运行结果界面图 困难： 1、看到题目，不能很好地进行分析； 2、基础知识掌握不牢； 3、以前写的程序少，刚开始写的时候，条理分得不是很清楚，意思不能很好 地表达； 4、电脑中了病毒，使得我所做的一切成果化为了泡影。 解决方案： 1、请教同学，画出了流程图，以帮助分析题目； 2、看书，查资料，巩固基础知识，在此过程中对J2ME又有了新的认识； 3、模仿了书上的例题，对程序的条理性也有了一定的认识； 4、在一天时间里重新做了一遍，帮我巩固了一番所学知识。 在课设这段时间，我学到了许多的知识，也积累了一些经验。巩固了以前所学知 识，更学会了许多以前不会的知识。 通过这次实训，我了解到了实践的重要性，只有理论结合实际，才能提高自己的 实际动手能力和独立思考的能力。只有理论知识是不够的，只能纸上谈兵，一旦 遇到实际问题，就会惊慌失措。 以前上课的时候，有时会遇到不懂的地方，现在才明白那是由于我没有在课后及 时对老师所讲内容进行实践操作，所以才只是记住了内容，却没有融会贯通，自 然时间长了越积越多也就不会了。所以以后要及时对上课老师所教知识进行实践 操作，使之达到融会贯通。 经过这次J2ME手机游戏实训，我们对eclipse这个软件有了更深一步的了解与深入，对J2ME类库的使用也有了大大的提高。在程序开发的过程中，我遇到了 各种各样的问题和错误。但面对种种问题和困难，还是得想尽一切办法去解决。 或是去网上查资料，或是想其他同学请教，或是互相讨论，或是查阅相关书籍。 现在，这次实训总算完成了，所付出的努力和心血总算没有白费。 《J2ME手机游戏开发技术详解》