android贪食蛇详细教程实现加源码

转载请注明出处：http://blog.csdn.net/b2569449528/article/details/78475327

工作需要开发了一个贪食蛇apk预装到公司产品，共10关。包含了游戏得分记录，升级地图切换，游戏音效，退出游戏可继续，游戏速度调节等等功能

游戏是基于重绘view机制开发的，没有使用surfaceview（因为之前已经写过一个），喜欢的可以参考下改改。英文不好大家将就着看看。

这是游戏界面实现，主要思路是通过开启一个线程，然后在线程中开启一个循环，不断的去改变蛇的位置，改变位置之后则调用刷新界面的方法重绘，实现小蛇移动。当然大家肯定也猜到了，游戏速度也是在其中控制的。

package com.example.snake.view;import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.StreamCorruptedException;import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources.NotFoundException;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.View;import com.example.snake.R;
import com.example.snake.bean.BackGround;
import com.example.snake.bean.Food;
import com.example.snake.bean.Obstacle;
import com.example.snake.bean.Snake;
import com.example.snake.utils.LogUtils;
import com.example.snake.utils.ObjectOutputUtils;
import com.example.snake.utils.OnGameOverListener;/*** @author dengjifu* @date 20171027*/
public class SnakeView extends View implements Runnable {/*******************************************/private Context context;private BackGround backGround;private Snake snake;private Obstacle obstacle;private Food food;private Bitmap bgBitmap, snakeBitmap, obstacleBitmap, foodBitmap;private int width, height;// game statepublic static final int GAMEING = 1;public static final int GAME_OVER = 2;public static final int GAME_PAUSE = 3;public static final int GAME_WIN = 4;public static int gameState = GAMEING;// game is a new game or continue gamepublic static final int NEW_GAME = 1;public static final int OLD_GAME = 2;public static int gameStore = NEW_GAME;private Thread gameThread;// when game over then let the Thread run endpublic static boolean endGame = false;// when level up then Thread sleep 1000mspublic volatile static boolean isLevelUp = false;// when the application was in the background and the MainActivity is go// into onStop() method// then let the Thread sleep, until it back to front;public static volatile boolean sleepThread = false;// when the game is over,to execute the interface method and pass the length// of snake to calculate scoreprivate OnGameOverListener onGameOverListener;// game speed arraypublic static long[] speedsArray = new long[] { 400, 350, 300, 250, 200,150, 120 };// to set the game speedpublic static long speed = speedsArray[0];/*******************************************/public void setOnGameOverListener(OnGameOverListener onGameOverListener) {this.onGameOverListener = onGameOverListener;}public long getSpeed() {return speed;}public void setSpeed(long speed) {SnakeView.speed = speed;}public SnakeView(Context context, AttributeSet attrs, int defStyleAttr) {super(context, attrs, defStyleAttr);}public SnakeView(Context context, AttributeSet attrs) {super(context, attrs);}public SnakeView(Context context, int width, int height) {super(context);this.context = context;this.width = width;this.height = height;initGame();gameThread = new Thread(this);gameThread.start();}private void initGame() {initBitMap();initBean();// if continue game then load the dataif (gameStore == OLD_GAME) {getGameData();}}private void initBean() {backGround = new BackGround(bgBitmap, width, height);obstacle = new Obstacle(obstacleBitmap);snake = new Snake(snakeBitmap, getContext());food = new Food(foodBitmap, snake, obstacle);snake.setObstacle(obstacle);snake.setFood(food);}private void initBitMap() {bgBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.block00);snakeBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.block4);foodBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.block6);obstacleBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.block0);}@Overrideprotected void onDraw(Canvas canvas) {backGround.draw(canvas);obstacle.draw(canvas);snake.draw(canvas);food.draw(canvas);}@Overridepublic void run() {while (true && !endGame) {try {LogUtils.d("thread", "name="+Thread.currentThread().getName());long start = System.currentTimeMillis();while (sleepThread) {Thread.sleep(3000);}while(isLevelUp){Thread.sleep(2000);snake.initSnake();obstacle.initObstacle(snake.getLastLength() / snake.levelNum);isLevelUp = false;}if (gameState == GAMEING) {snake.move();// Invalidate SnakeViewpostInvalidate();} else if (gameState == GAME_OVER) {backGround.initPoint();if (onGameOverListener != null) {onGameOverListener.afterGameOver(GAME_OVER,calculScore());}clearCache();clearGameData();saveGameStateToshareprefernce();endGame = true;} else if (gameState == GAME_WIN) {backGround.initPoint();clearCache();clearGameData();if (onGameOverListener != null) {onGameOverListener.afterGameOver(GAME_WIN,calculScore());}saveGameStateToshareprefernce();endGame = true;}long end = System.currentTimeMillis();long time = end - start;if (time < speed) {Thread.sleep(speed - time);} else {}} catch (InterruptedException e) {LogUtils.d("thread", "interrupt name="+Thread.currentThread().getName());}}}private void saveGameStateToshareprefernce() {SharedPreferences.Editor edit = context.getSharedPreferences("levelint", Context.MODE_PRIVATE).edit();edit.putInt("gameState", SnakeView.gameState);edit.apply();}// calculate scoreprivate int calculScore() {int eatLength = snake.getLength() + snake.getLastLength();int level = obstacle.getLevel();int Score = (int) (level * 100 + eatLength * 20 * ((600 - speed) / 100));return Score;}private void clearCache() {food.clearCache();snake.clearCache();obstacle.clearCache();}@Overridepublic void onWindowFocusChanged(boolean hasWindowFocus) {super.onWindowFocusChanged(hasWindowFocus);}// save the game datapublic void saveGameData() {LogUtils.d("saveObj", "--------saveGameData----");ObjectOutputUtils objectOutputUtils = new ObjectOutputUtils(context);try {objectOutputUtils.outPutObj(food, "food");objectOutputUtils.outPutObj(snake, "snake");objectOutputUtils.outPutObj(obstacle, "obstacle");} catch (FileNotFoundException e) {e.printStackTrace();LogUtils.d("saveObj", "--saveGameData-e---" + e.getMessage());} catch (NotFoundException e) {e.printStackTrace();LogUtils.d("saveObj", "--saveGameData-e---" + e.getMessage());} catch (IOException e) {e.printStackTrace();LogUtils.d("saveObj", "--saveGameData-e---" + e.getMessage());}}// read game datapublic void getGameData() {LogUtils.d("saveObj", "--------getGameData----");ObjectOutputUtils objectOutputUtils = new ObjectOutputUtils(context);try {Food objFood = (Food) objectOutputUtils.inPutObj("food");Snake objSnake = (Snake) objectOutputUtils.inPutObj("snake");Obstacle objobstacle = (Obstacle) objectOutputUtils.inPutObj("obstacle");if (objFood != null && objFood.getListFood() != null&& objFood.getListFood().size() > 0) {food.setData(objFood);}if (objSnake != null && objSnake.getPosition() != null&& objSnake.getPosition().size() > 0) {snake.setData(objSnake);}if (objobstacle != null && objobstacle.getList() != null&& objobstacle.getList().size() > 0) {obstacle.setData(objobstacle);}} catch (StreamCorruptedException e) {e.printStackTrace();LogUtils.d("saveObj", "--getGameData-e---" + e.getMessage());} catch (FileNotFoundException e) {e.printStackTrace();LogUtils.d("saveObj", "--getGameData-e---" + e.getMessage());} catch (ClassNotFoundException e) {e.printStackTrace();LogUtils.d("saveObj", "--getGameData-e---" + e.getMessage());} catch (NotFoundException e) {e.printStackTrace();LogUtils.d("saveObj", "--getGameData-e---" + e.getMessage());} catch (IOException e) {e.printStackTrace();LogUtils.d("saveObj", "--getGameData-e---" + e.getMessage());}}// clear datapublic void clearGameData() {LogUtils.d("saveObj", "--------clearGameData----");ObjectOutputUtils objectOutputUtils = new ObjectOutputUtils(context);try {objectOutputUtils.outPutObj(null, "food");objectOutputUtils.outPutObj(null, "snake");objectOutputUtils.outPutObj(null, "obstacle");} catch (FileNotFoundException e) {e.printStackTrace();LogUtils.d("saveObj", "--clearGameData-e---" + e.getMessage());} catch (NotFoundException e) {LogUtils.d("saveObj", "--clearGameData-e---" + e.getMessage());e.printStackTrace();} catch (IOException e) {LogUtils.d("saveObj", "--clearGameData-e---" + e.getMessage());e.printStackTrace();}}public void setDirection(int direction) {snake.setDIRECTION(direction);}public int getDirection() {return snake.getDIRECTION();}}

MainActivity主要的工作呢就是实现界面初始化以及按键监听，还有一个游戏结束时的回调。

MainActivity的代码：

package com.example.snake.activity;import android.content.Intent;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.KeyEvent;import com.example.snake.bean.Snake;
import com.example.snake.utils.LogUtils;
import com.example.snake.utils.OnGameOverListener;
import com.example.snake.view.SnakeView;
/*** @author dengjifu* @date 20171027*/
public class MainActivity extends BaseActivity implements OnGameOverListener{SnakeView snakeView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);DisplayMetrics metric = new DisplayMetrics();getWindowManager().getDefaultDisplay().getMetrics(metric);int width = metric.widthPixels; //width pxint height = metric.heightPixels; // height pxsnakeView = new SnakeView(this, width, height);setContentView(snakeView);snakeView.setClickable(false);snakeView.setOnGameOverListener(this);}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {switch (keyCode) {case KeyEvent.KEYCODE_DPAD_LEFT:if(snakeView.getDirection()!=Snake.RIGHT && !Snake.isDirectionPressed){snakeView.setDirection(Snake.LEFT);Snake.isDirectionPressed = true;}return true;case KeyEvent.KEYCODE_DPAD_UP:if(snakeView.getDirection()!=Snake.BOTTOM && !Snake.isDirectionPressed){snakeView.setDirection(Snake.TOP);Snake.isDirectionPressed = true;}return true;case KeyEvent.KEYCODE_DPAD_RIGHT:if(snakeView.getDirection()!=Snake.LEFT && !Snake.isDirectionPressed){snakeView.setDirection(Snake.RIGHT);Snake.isDirectionPressed = true;}return true;case KeyEvent.KEYCODE_DPAD_DOWN:if(snakeView.getDirection()!=Snake.TOP && !Snake.isDirectionPressed){snakeView.setDirection(Snake.BOTTOM);Snake.isDirectionPressed = true;}return true;case KeyEvent.KEYCODE_ENTER:
//          if(SnakeView.gameState!=SnakeView.GAME_PAUSE){
//              SnakeView.gameState = SnakeView.GAME_PAUSE;
//          }else {
//              SnakeView.gameState = SnakeView.GAMEING;
//          }return true;}return super.onKeyDown(keyCode, event);}@Overridepublic void onBackPressed() {SnakeView.endGame = true;snakeView.saveGameData();LogUtils.d("saveObj", "-------onBackPressed--------");MainActivity.this.finish();}@Overridepublic void afterGameOver(int game,int score) {Intent intent = new Intent(this, DialogActivity.class);intent.putExtra("game", game);intent.putExtra("score", score);startActivity(intent);MainActivity.this.finish();}@Overrideprotected void onPause() {super.onPause();}@Overrideprotected void onDestroy() {super.onDestroy();}@Overrideprotected void onStop() {SnakeView.sleepThread = true;snakeView.saveGameData();LogUtils.d("saveObj", "-------onStop--------");super.onStop();}@Overrideprotected void onRestart() {LogUtils.d("saveObj", "-------onRestart--------");SnakeView.sleepThread = false;super.onRestart();}
}

代码比较多就不一一贴出来了，喜欢的可以去github上下载，别忘了给我个start哦！谢谢大家，下面是贴图。

截图如下：

原文链接：http://blog.csdn.net/b2569449528/article/details/78475327

下载链接：

http://download.csdn.net/download/b2569449528/10108784

GitHub链接：

https://github.com/1994jeff/MyDemo

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