J2ME贪吃蛇游戏.doc

J2ME贪吃蛇游戏贪吃蛇游戏里共包含MIDlet、Canvas、Dislog、RMS、SnakeClass五个包、总共有17个类。Canvas包里包含6个类，在这个包里面所有的类都继承了Canvas类，BeginCanvas类:public class BeginCanvas extends Canvas / 用于画布切换private SnakeMIDlet parent = null;private GameData snakeOpe = new GameData(snake_feifeidan);/ 背景画面private Image image_bg = null;/ 选择条private Image image_choice = null;/ 选择的x坐标private int choice_x;/ 选择的y坐标private int choice_y;private int node = 4;private final int first_x = 12, first_y = 60;/ 构造函数public BeginCanvas(SnakeMIDlet p) ./ 绘制背景图层及选择条protected void paint(Graphics g) / 选择条向上移动private void up() / 选择条向下移动private void down() / 在选择条位置选中private void fixed() ./ 非游戏按键检测protected void keyPressed(int keyCode) .SnakeGameCanvas类：public class SnakeGameCanvas extends GameCanvas implements Runnableprivate SnakeMIDlet parent = null;private RMSChartOpe chartOpe = new RMSChartOpe(chart);private GameData data = new GameData(snake_feifeidan);/画笔private Graphics gra = null;/核查是否运行runprivate boolean move = false;/关卡levelprivate Level level = null;/食物private Food food = null;/贪食蛇private Snake snake = null;private Record record = new Record();/用于画布运行的线程private Thread t = null;/画布的宽private int width;/画布的高private int height;/构造函数public SnakeGameCanvas(SnakeMIDlet p,boolean state).public void run()while(move)/清除画布gra.setColor(255, 255, 255);gra.fillRect(0, 0,width,height);/检测键盘游戏按键if(!keyPressed() break;/确定游戏的开始if(level.isInto()/如果游戏开始了绘制贪食蛇水果等,并检测贪食蛇的相关碰撞if(snake.collision(food)./绘制关卡level.paint(gra,snake);food.paintFood(gra,snake);snake.paintSnake(gra);/实时绘制分数及关卡等级record.paint(gra, level.getH(),snake.getScore();else/如果游戏还未开始,绘制规则提示画面mpt(gra);/刷新画笔this.flushGraphics();/线程休眠sleep(100*level.getSpeed();/休眠private void sleep(int time)./检测键盘游戏按键private boolean keyPressed()./检测键盘非游戏按键protected void keyPressed(int keyCode).Dislog包只有一个类，此类添加一些文字，包括：常用、level、help、chart。MIDlet包中放有这个程序的主类控制所有其它类的运行和销毁。RMS包中有俩个类，GameData类包含“新游戏、加载游戏、暂停游戏、游戏结束”等方法的设置，及将对象转为字节数组和将字节数组转为对象的设置。SnakeClass包中含有七个类，Food类设置了水果随机出现的的位置坐标等，Level类设置了关卡背景图层、关卡精灵、地图宽度高度，设置了蛇的初始速度及规则等，Snake类主要绘制贪吃蛇，设置了蛇的当前长度、蛇的最大长度、蛇的位置及