Android游戏——2048的设计(2).doc

Android游戏2048的设计（2）游戏运行界面如下：实现的功能有： 1.有4x4，5x5，6x6三种规则 2.记录历史最高分 3.使用纯色块 4.保存游戏 5.开启音效 6.更换背景图开发工具用的是Android Studio游戏的思路并不复杂，甚至可以说是挺简单的。 首先要自定义一个View，作为可滑动的方块（其实滑动效果是通过改变数字与颜色来模拟实现的），这个View要继承于FrameLayout 每一种不同数值的方块有不同的颜色，通过设置“setBackgroundColor”来实现。public class Card extends FrameLayout private TextView label; private int num = 0; /用于判断是否纯色块 public boolean flag; public Card(Context context) super(context); label = new TextView(context); label.setGravity(Gravity.CENTER); label.setTextSize(24); label.setBackgroundColor(Color.parseColor(#77E8E2D8); LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); lp.setMargins(5, 5, 0, 0); addView(label, lp); public void setNum(int num) this.num = num; if (num = 0) label.setText(); label.setBackgroundColor(Color.parseColor(#77E8E2D8); else if(!flag) label.setText(num + ); changeCardColor(); public int getNum() return num; public void changeCardColor() switch (num) case 2: label.setBackgroundColor(Color.parseColor(#5DB8E8); break; case 4: label.setBackgroundColor(Color.parseColor(#A52812); break; case 8: label.setBackgroundColor(Color.parseColor(#0E7171); break; case 16: label.setBackgroundColor(Color.parseColor(#C0BB39); break; case 32: label.setBackgroundColor(Color.parseColor(#623889); break; case 64: label.setBackgroundColor(Color.parseColor(#5C7235); break; case 128: label.setBackgroundColor(Color.parseColor(#826FA3); break; case 256: label.setBackgroundColor(Color.parseColor(#355659); break; case 512: label.setBackgroundColor(Color.parseColor(#BB719B); break; case 1024: label.setBackgroundColor(Color.parseColor(#9B8B53); break; case 2048: label.setBackgroundColor(Color.parseColor(#196A5D); break; default: label.setBackgroundColor(Color.parseColor(#8A7760); public boolean equals(Card c) return this.getNum() = c.getNum(); 此外，可以看到不管是4x4规则的或者5x5，6x6的，整个可滑动区域都是一个正方形，方块平均分布，因此可以自定义一个View，继承于GridLayout，为之添加多个Card 。 GameView 的重点在于方块的滑动判断以及实现滑动效果。 SoundPool 的使用方法在Android5.0之后发生了改变，所以需要在代码中判断当前系统版本，从而使用不同的初始化方法。public class GameView extends GridLayout / 存储所有方块 private Card Cards; / 当前游戏的行数与列数 private int Row; / 游戏记录 private SharedPreferences gameRecord; / 存储游戏音效开关记录 private SharedPreferences GameSettings; private SharedPreferences.Editor grEditor; public ScoreChangeListen scoreChangeListen=null; private Context context; /当前得分 private int Score; public SoundPool soundPool; / private HashMap soundID; private int soundID; private boolean soundSwitch; private class Point public Point(int x, int y) this.x = x; this.y = y; int x; int y; public GameView(Context context, AttributeSet attrs, int defStyleAttr) super(context, attrs, defStyleAttr); this.context = context; TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.ViewSet); Row = mTypedArray.getInt(R.styleable.ViewSet_Row, 5); mTypedArray.recycle(); super.setColumnCount(Row); init(); public GameView(Context context, AttributeSet attrs) super(context, attrs); this.context = context; TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.ViewSet); Row = mTypedArray.getInt(R.styleable.ViewSet_Row, 5); mTypedArray.recycle(); super.setColumnCount(Row); init(); public GameView(Context context) super(context); this.context = context; init(); / 初始化 private void init() gameRecord = context.getSharedPreferences(GameRecord, Context.MODE_PRIVATE); GameSettings = context.getSharedPreferences(GameSettings, Context.MODE_PRIVATE); boolean flag=GameSettings.getBoolean(SolidColorSwitch,false); soundSwitch=GameSettings.getBoolean(SoundSwitch,false); /SoundPool的构建方法在5.0系统之后发生了变化 if (Build.VERSION.SDK_INT 21) soundPool = new SoundPool(1,AudioManager.STREAM_MUSIC,0); else SoundPool.Builder builder = new SoundPool.Builder(); builder.setMaxStreams(1); AudioAttributes.Builder attrBuilder = new AudioAttributes.Builder(); attrBuilder.setLegacyStreamType(AudioManager.STREAM_MUSIC); builder.setAudioAttributes(attrBuilder.build(); soundPool = builder.build(); soundID=soundPool.load(context,R.raw.sound,1); grEditor = gameRecord.edit(); Cards = new CardRowRow; for (int y = 0; y Row; y+) for (int x = 0; x Row; x+) Cardsxy = new Card(context); Cardsxy.flag=flag; / 添加两个初始方块 randomCard(); randomCard(); protected void onSizeChanged(int w, int h, int oldw, int oldh) super.onSizeChanged(w, h, oldw, oldh); / 计算方块的边长 int cardWidth = (Math.min(w, h) - 5) / Row; / 添加方块 addCard(cardWidth); / 计算分数 private void countScore(int num) Score = Score + num; if(scoreChangeListen!=null) scoreChangeListen.OnNowScoreChange(Score); if(soundSwitch) soundPool.play(soundID, 1, 1, 0, 0, 1); / 添加方块 private void addCard(int cardWidth) for (int y = 0; y Row; y+) for (int x = 0; x Row; x+) addView(Cardsxy, cardWidth, cardWidth); / 生成伪随机方块 private void randomCard() List points = new ArrayList(); for (int x = 0; x Row; x+) for (int y = 0; y Row; y+) / 如果还有空白方块 if (Cardsxy.getNum() = 0) points.add(new Point(x, y); if (points.size() = 0) return; int index = points.size() / 2; Cardspoints.get(index).xpoints.get(index).y.setNum(2); / 左移 private void moveLeftCard() allMoveLeft(); for (int y = 0; y Row; y+) for (int x = 0; x Row - 1; x+) if (Cardsxy.getNum() != 0) if (Cardsxy.equals(Cardsx + 1y) int num = Cardsxy.getNum(); Cardsxy.setNum(2 * num); Cardsx + 1y.setNum(0); countScore(num); allMoveLeft(); randomCard(); / 右移 private void moveRightCard() allMoveRight(); for (int y = 0; y 0; x-) if (Cardsxy.getNum() != 0) if (Cardsxy.equals(Cardsx - 1y) int num = Cardsxy.getNum(); Cardsxy.setNum(2 * num); Cardsx - 1y.setNum(0); countScore(num); allMoveRight(); randomCard(); / 上移 private void moveUpCard() allMoveUp(); for (int x = 0; x Row; x+) for (int y = 0; y Row - 1; y+) if (Cardsxy.getNum() != 0) if (Cardsxy.equals(Cardsxy + 1) int num = Cardsxy.getNum(); Cardsxy.setNum(2 * num); Cardsxy + 1.setNum(0); countScore(num); allMoveUp(); randomCard(); / 下移 private void moveDownCard() allMoveDown(); for (int x = 0; x 0; y-) if (Cardsxy.getNum() != 0) if (Cardsxy.equals(Cardsxy - 1) int num = Cardsxy.getNum(); Cardsxy.setNum(2 * num); Cardsxy - 1.setNum(0); countScore(num); allMoveDown(); randomCard(); / 全部左移 private void allMoveLeft() for (int y = 0; y Row; y+) int i = 0; for (int x = 0; x Row; x+) if (Cardsxy.getNum() != 0) int num = Cardsxy.getNum(); Cardsxy.setNum(0); Cardsi+y.setNum(num); / 全部右移 private void allMoveRight() for (int y = 0; y -1; x-) if (Cardsxy.getNum() != 0) int num = Cardsxy.getNum(); Cardsxy.setNum(0); Cardsi-y.setNum(num); / 全部上移 private void allMoveUp() for (int x = 0; x Row; x+) int i = 0; for (int y = 0; y Row; y+) if (Cardsxy.getNum() != 0) int num = Cardsxy.getNum(); Cardsxy.setNum(0); Cardsxi+.setNum(num); / 全部下移 private void allMoveDown() for (int x = 0; x -1; y-) if (Cardsxy.getNum() != 0) int num = Cardsxy.getNum(); Cardsxy.setNum(0); Cardsxi-.setNum(num); / 触屏事件监听 float X; float Y; float OffsetX; float OffsetY; int HintCount = 0; public boolean isHalfway = true; public boolean onTouchEvent(MotionEvent event) / 为了避免当游戏结束时消息多次提示 if (HintCount = 1) return true; switch (event.getAction() case MotionEvent.ACTION_DOWN: X = event.getX(); Y = event.getY(); break; case MotionEvent.ACTION_UP: OffsetX = event.getX() - X; OffsetY = event.getY() - Y; if (Math.abs(OffsetX) (Math.abs(OffsetY) if (OffsetX 5) moveRightCard(); else if (OffsetY 5) moveDownCard(); HintMessage(); break; return true; / 判断游戏是否结束 private boolean isOver() for (int y = 0; y Row; y+) for (int x = 0; x = 0 & Cardsx - 1y.equals(Cardsxy) | (x + 1 = 0 & Cardsxy - 1.equals(Cardsxy) | (y + 1 = Row - 1 & Cardsxy + 1.equals(Cardsxy) return false; return true; / 当游戏结束时提示信息 private oid HintMessage() if (isOver() Toast.makeText(getContext(), 游戏结束啦, Toast.LENGTH_SHORT).show(); HintCount=1; /重新开始 public void restart() for (int y = 0; y Row; y+) for (int x = 0; x Row; x+) Cardsxy.setNum(0); Score=0; HintCount=0; / 添加两个初始方块 randomCard(); randomCard(); /保存游戏 public void saveGame() grEditor.clear(); grEditor.putInt(Row, Row); grEditor.putInt(Score,Score); int k = 0; for (int i = 0; i Row; i+) for (int j = 0; j Row; j+) k+; String str = k + ; grEditor.putInt(str, Cardsij.getNum(); if( grEmit() Toast.makeText(context, 保存成功, Toast.LENGTH_SHORT).show(); else Toast.makeText(context, 保存失败，请重试, Toast.LENGTH_SHORT).show(); / 恢复游戏 public void recoverGame() int k = 0; for (int i = 0; i Row; i+) for (int j = 0; j Row; j+) k+; String str = k + ; int num = gameRecord.getInt(str, 0); Cardsij.setNum(num); Score=gameRecord.getInt(Score,0); scoreChangeListen.OnNowScoreChange(Score); 要注意的是，在GameView的构造函数中，需要读取GameView的一个自定义属性“Row”，如果没有指定则默认为5。该属性的定义在values文件夹的attrs.xml文件中。 这样，在布局文件中使用GameView时，先加上属性声明然后就可以为GameView设置显示行数了整个游戏界面是由GameActivity呈现的，该Activity通过Bundle 携带的数据使用不同的布局文件。public class GameActivity extends AppCompatActivity private GameView gameView; private TextView text_nowScore; private TextView text_highestScore; private TextView text_restart; private TextView text_saveGame; private ScoreChangeListen scoreChangeListen; / 游戏设置 private SharedPreferences gameSettings; private SharedPreferences.Editor gsEditor; / 历史最高分 private int highestScore; / 用于实现“在点击一次返回键退出程序”的效果 private boolean isExit = false; private boolean flag; private int temp; private Handler mHandler = new Handler() public void handleMessage(Message msg) super.handleMessage(msg); isExit = false; ; protected void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); getSupportActionBar().hide(); Intent intent = getIntent(); Bundle bundle = intent.getExtras(); int row = bundle.getInt(Row, 4); if (row = 4) setContentView(R.layout.activity_four); else if (row = 5) setContentView(R.layout.activity_five); else setContentView(R.layout.activity_six); init(); /判断是否需要恢复游戏记录 if (bundle.getBoolean(RecoverGame, false) gameView.recoverGame(); / 初始化 public void init() gameView = (GameView) findViewById(R.id.gameView_five); text_nowScore = (TextView) findViewById(R.id.nowScore); text_highestScore = (TextView) findViewById(R.id.highestScore); text_restart = (TextView) findViewById(R.id.restart); text_saveGame = (TextView) findViewById(R.id.save_game); gameSettings = getSharedPreferences(GameSettings, Context.MODE_PRIVATE); gsEditor = gameSettings.edit(); highestScore = gameSettings.getInt(HighestScore, 0); text_nowScore.setText(当前得分n + 0); text_highestScore.setText(最高得分n + highestScore); flag = true; LinearLayout rootLayout = (LinearLayout) findViewById(R.id.rootLayout); int themeIndex = gameSettings.getInt(ThemeIndex, 1); switch (themeIndex) case 1: rootLayout.setBackgroundResource(R.drawable.back1); break; case 2: rootLayout.setBackgroundResource(R.drawable.back2); break; case 3: rootLayout.setBackgroundResource(R.drawable.back3); break; case 4: rootLayout.setBackgroundResource(R.drawable.back4); break; case 5: rootLayout.setBackgroundResource(R.drawable.back5);