附录1.SnakeView类package com.example.android_snake.view；import java.util.ArrayList;import java.util.List;import java.util.Random;import java.util.Timer;import java.util.TimerTask;import com.example.android_snake.R;import com.example.android_snake.food.Food;import com.example.android_snake.snake.Body;import com.example.android_snake.snake.Head;import com.example.android_snake.snake.Snake;import com.example.android_snake.snake.SnakeDirection; import com.example.android_snake.stone.Stone;import android.annotation.SuppressLint;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Paint.Style;import android.os.Handler;import android.util.DisplayMetrics;import android.view.Display;import android.view.MotionEvent;import android.view.View;import android.view.ViewManager;import android.view.WindowManager;import android.widget.Toast;public class SnakeView extends View {private Context context;private Bitmap headBitmap;private Bitmap bodyBitmap;private Bitmap foodBitmap;private Bitmap stoneBitmap;// 屏幕的高度和宽度private int screenHeight;private int screenWidth;// 每个小格子的高度和宽度private int eachHeight;private int eachWidth;private Snake snake;private Food food;private Stone stone;private int [] listx;private int [] listy;private Timer timer = new Timer();Handler handler = new Handler() {public void handleMessage(android.os.Message msg) {moveSnake();invalidate();}};public SnakeView(Context context) {super(context);this.context = context;listx =new int[100];listy =new int[100];// 获得屏幕的高和宽DisplayMetrics metrics = new DisplayMetrics();WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);windowManager.getDefaultDisplay().getMetrics(metrics);screenHeight = metrics.heightPixels;screenWidth = metrics.widthPixels;eachHeight = screenHeight / 32;eachWidth = screenWidth / 20;// 初始化图片headBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.head);bodyBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.body);foodBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.food);stoneBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.stone);this.initSnake();this.initFood();this.initstone();gameRun();}@Overrideprotected void onDraw(Canvas canvas) {super.onDraw(canvas);Paint paint = new Paint();// 定义画笔paint.setColor(Color.GRAY);// 设置画笔颜色paint.setAntiAlias(true);// 去除锯齿paint.setStyle(Style.STROKE);// 设置空心实心paint.setTextSize(40);drawLines(canvas, paint);drawStone(canvas, paint);if(isCollide()){canvas.drawText("Game Over!", screenWidth/4, screenHeight/3, paint);canvas.drawText("得分", screenWidth/4, screenHeight/2, paint);timer.cancel();}else{this.drawSnake(canvas, paint);}boolean flag = IsRectCollision(snake.getHead().getPointX(), snake.getHead().getPointY(), eachWidth, eachHeight,food.getPointX(), food.getPointY(), eachWidth, eachHeight);if (flag) {food = null;snake.getBodyList().add(new Body());this.initFood();this.initstone();} else {this.drawFood(canvas, paint);this.drawStone(canvas, paint);}}//方向控制@Overridepublic boolean onTouchEvent(MotionEvent event) {int x = (int) event.getX();int y = (int) event.getY();SnakeDirection nowDir = snake.getSnakeDirection();int m = -screenHeight * x + screenHeight * screenWidth - screenWidth * y;int n = screenHeight * x - screenWidth * y;if ((m > 0 && n > 0) && (nowDir != SnakeDirection.DOWN)) {snake.setSnakeDirection(SnakeDirection.UP);} else if ((m > 0 && n < 0) && (nowDir != SnakeDirection.RIGHT)) { snake.setSnakeDirection(SnakeDirection.LEFT);} else if ((m < 0 && n > 0) && (nowDir != SnakeDirection.LEFT)) { snake.setSnakeDirection(SnakeDirection.RIGHT);} else if ((m < 0 && n < 0) && (nowDir != SnakeDirection.UP)) { snake.setSnakeDirection(SnakeDirection.DOWN);}return super.onTouchEvent(event);}public void gameRun() {timer.scheduleAtFixedRate(new TimerTask() {public void run() {handler.obtainMessage().sendToTarget();}}, 100, 400);}/** 画网格线*/public void drawLines(Canvas canvas, Paint paint) {int startX = 0, startY = 0;for (int i = 0; i < 100; i++) {canvas.drawLine(0, startY, screenWidth, startY, paint);startY = startY + eachHeight;}for (int i = 0; i < 100; i++) {canvas.drawLine(startX, 0, startX, screenHeight, paint);startX = startX + eachWidth;}canvas.drawLine(0, 0, screenWidth, screenHeight, paint);canvas.drawLine(0, screenHeight, screenWidth, 0, paint);}// 初始化蛇public void initSnake() {List<Body> bodies = new ArrayList<Body>();Head head = new Head(eachWidth * 4, eachHeight * 2, headBitmap);Body body1 = new Body(eachWidth * 3, eachHeight * 2, bodyBitmap);Body body2 = new Body(eachWidth * 2, eachHeight * 2, bodyBitmap);Body body3 = new Body(eachWidth * 1, eachHeight * 2, bodyBitmap);Body body4 = new Body(eachWidth * 0, eachHeight * 2, bodyBitmap);bodies.add(body1);bodies.add(body2);bodies.add(body3);bodies.add(body4);snake = new Snake(head, bodies, SnakeDirection.RIGHT);}// 画蛇public void drawSnake(Canvas canvas, Paint paint) {canvas.drawBitmap(headBitmap, snake.getHead().getPointX(), snake .getHead().getPointY(), paint);for (int i = 0; i < snake.getBodyList().size(); i++) {canvas.drawBitmap(bodyBitmap, snake.getBodyList().get(i).getPointX(), snake.getBodyList().get(i).getPointY(), paint);}}// 改变蛇身的位置public void changSnakePosition(int pointX, int pointY) {for (int i = snake.getBodyList().size() - 1; i > 0; i--) {snake.getBodyList().get(i).setPointX(snake.getBodyList().get(i - 1).getPointX());snake.getBodyList().get(i).setPointY(snake.getBodyList().get(i - 1).getPointY());}snake.getBodyList().get(0).setPointX(snake.getHead().getPointX());snake.getBodyList().get(0).setPointY(snake.getHead().getPointY());}// 移动蛇public void moveSnake() {int nowPointX = snake.getHead().getPointX();int nowPointY = snake.getHead().getPointY();if (snake.getSnakeDirection() == SnakeDirection.RIGHT) {changSnakePosition(nowPointX, nowPointY);if (nowPointX >= screenWidth - eachWidth) {snake.getHead().setPointX(0);} else {snake.getHead().setPointX(nowPointX + eachWidth);}} else if (snake.getSnakeDirection() == SnakeDirection.DOWN) { changSnakePosition(nowPointX, nowPointY);if (nowPointY >= screenHeight - eachHeight) {snake.getHead().setPointY(0);} else {snake.getHead().setPointY(nowPointY + eachHeight);}} else if (snake.getSnakeDirection() == SnakeDirection.LEFT) {changSnakePosition(nowPointX, nowPointY);if (nowPointX <= 0) {snake.getHead().setPointX(screenWidth - eachWidth);} else {snake.getHead().setPointX(nowPointX - eachWidth);}} else if (snake.getSnakeDirection() == SnakeDirection.UP) {changSnakePosition(nowPointX, nowPointY);if (nowPointY <= 0) {snake.getHead().setPointY(screenHeight - eachHeight);} else {snake.getHead().setPointY(nowPointY - eachHeight);}}}// 初始化foodpublic void initFood() {int x = new Random().nextInt(19);int y = new Random().nextInt(29);food = new Food(eachWidth * x, eachHeight * y, foodBitmap);}// 在界面上画出Foodpublic void drawFood(Canvas canvas, Paint paint) {if (food != null) {canvas.drawBitmap(foodBitmap, food.getPointX(), food.getPointY(),paint);}}// 初始化stonepublic void initstone() {int x = new Random().nextInt(17);int y = new Random().nextInt(23);stone = new Stone(eachWidth * x, eachHeight * y, stoneBitmap);int i=0,j=0;listx[i++]=x;listy[j++]=y;}// 在界面上画出Stonepublic void drawStone(Canvas canvas, Paint paint) {if (true) {canvas.drawBitmap(stoneBitmap, stone.getPointX(), stone.getPointY(),paint);for(int k=0;k<100;k++){//food = new Food(eachWidth * listx[k], eachHeight * listy[k], foodBitmap);//canvas.drawBitmap(stoneBitmap,listx[k], listy[k],paint);}}}/*** 矩形碰撞检测参数为x,y,width,height** @param x1* 第一个矩形的x* @param y1* 第一个矩形的y* @param w1* 第一个矩形的w* @param h1* 第一个矩形的h* @param x2* 第二个矩形的x* @param y2* 第二个矩形的y* @param w2* 第二个矩形的w* @param h2* 第二个矩形的h* @return是否碰撞*/public boolean IsRectCollision(int x1, int y1, int w1, int h1, int x2, int y2, int w2, int h2) {if (x2 > x1 && x2 >= x1 + w1) {return false;} else if (x2 < x1 && x2 <= x1 - w2) {return false;} else if (y2 > y1 && y2 >= y1 + h1) {return false;} else if (y2 < y1 && y2 <= y1 - h2) {return false;} else {return true;}}//检测蛇头是否与蛇身碰撞//检测蛇头与墙的碰撞//public boolean isCollide() {boolean flag = false;for (int i = 0; i < snake.getBodyList().size(); i++) {flag = IsRectCollision(snake.getHead().getPointX(),snake.getHead().getPointY(), eachWidth, eachHeight,snake.getBodyList().get(i).getPointX(),snake.getBodyList().get(i).getPointY(),eachWidth,eachHeight);for(int j=0;j<100;j++){flag = IsRectCollision(snake.getHead().getPointX(),snake.getHead().getPointY(), eachWidth, eachHeight,listx[j],listy[j], eachWidth,eachHeight);if(flag){break;}}if ((snake.getHead().getPointX() < 1) ||(snake.getHead().getPointY() < 1) ||(snake.getHead().getPointX() > screenWidth - 1)||(snake.getHead().getPointY() > screenHeight - 1)){flag = true;}if(flag){break;}}return flag;}}2.MainActivity类package com.example.android_snake;import com.example.android_snake.R;import com.example.android_snake.view.SnakeView;//Downloads By import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.view.MenuItem;import android.view.Window;import android.view.WindowManager;public class MainActivity extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);//设置全屏getWindow().setFlags(youtParams.FLAG_FULLSCREEN, youtParams.FLAG_FULLSCREEN);SnakeView view = new SnakeView(this);setContentView(view);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.main, menu);return true;}}3.Food类package com.example.android_snake.food;import android.graphics.Bitmap;public class Food {private int pointX;private int pointY;private Bitmap foodBitmap;public Food() {super();}public Food(int pointX, int pointY, Bitmap foodBitmap) { super();this.pointX = pointX;this.pointY = pointY;this.foodBitmap = foodBitmap;}public int getPointX() {return pointX;}public void setPointX(int pointX) {this.pointX = pointX;}public int getPointY() {return pointY;}public void setPointY(int pointY) {this.pointY = pointY;}public Bitmap getFoodBitmap() {return foodBitmap;}public void setFoodBitmap(Bitmap foodBitmap) {this.foodBitmap = foodBitmap;}}4.Body类package com.example.android_snake.snake;import android.graphics.Bitmap;public class Body {private int pointX;private int pointY;private Bitmap bodyBitMap;public Body() {super();}public Body(int pointX, int pointY, Bitmap bodyBitMap) { super();this.pointX = pointX;this.pointY = pointY;this.bodyBitMap = bodyBitMap;}public int getPointX() {return pointX;}public void setPointX(int pointX) {this.pointX = pointX;}public int getPointY() {return pointY;}public void setPointY(int pointY) {this.pointY = pointY;}public Bitmap getBodyBitMap() {return bodyBitMap;}public void setBodyBitMap(Bitmap bodyBitMap) {this.bodyBitMap = bodyBitMap;}}5.Head类package com.example.android_snake.snake;import android.graphics.Bitmap;public class Head {private int pointX;private int pointY;private Bitmap headBitMap;public Head() {super();}public Head(int pointX, int pointY, Bitmap headBitMap) {super();this.pointX = pointX;this.pointY = pointY;this.headBitMap = headBitMap;}public int getPointX() {return pointX;}public void setPointX(int pointX) {this.pointX = pointX;}public int getPointY() {return pointY;}public void setPointY(int pointY) {this.pointY = pointY;}public Bitmap getHeadBitMap() {return headBitMap;}public void setHeadBitMap(Bitmap headBitMap) {this.headBitMap = headBitMap;}}6.Snake类package com.example.android_snake.snake;import java.util.ArrayList;import java.util.List;import android.graphics.Bitmap;public class Snake {private Head head;private Body body;private List<Body> bodyList;private SnakeDirection snakeDirection;public Snake(){}public Snake(Head head,List<Body> bodyList,SnakeDirection snakeDirection){ super();this.head = head;this.bodyList = bodyList;this.snakeDirection = snakeDirection;}public Head getHead() {return head;}public void setHead(Head head) {this.head = head;}public Body getBody() {return body;}public void setBody(Body body) {this.body = body;}public List<Body> getBodyList() {return bodyList;}public void setBodyList(List<Body> bodyList) {this.bodyList = bodyList;}public SnakeDirection getSnakeDirection() {return snakeDirection;}public void setSnakeDirection(SnakeDirection snakeDirection) { this.snakeDirection = snakeDirection;}}7.SnakeDirection类package com.example.android_snake.snake;public enum SnakeDirection {UP,DOWN,LEFT,RIGHT;}8.Stone类package com.example.android_snake.stone;import android.graphics.Bitmap;public class Stone {private int pointX;private int pointY;private Bitmap stoneBitmap;public Stone() {super();}public Stone(int pointX, int pointY, Bitmap foodBitmap) { super();this.pointX = pointX;this.pointY = pointY;this.stoneBitmap = stoneBitmap;}public int getPointX() {return pointX;}public void setPointX(int pointX) {this.pointX = pointX;}public int getPointY() {return pointY;}public void setPointY(int pointY) {this.pointY = pointY;}public Bitmap getStoneBitmap() {return stoneBitmap;}public void setFoodBitmap(Bitmap foodBitmap) { this.stoneBitmap = stoneBitmap;}}。