android 模拟2048

利用节日休息时间在ANDROID上进行学习并模拟2048游戏。

效果如下图：

制作思路：

1、画出2048游戏主界面，根据手机屏幕宽高度进行计算并画出每个方块的大小。

 1 @Override
 2     protected void onSizeChanged(int w, int h, int oldw, int oldh) {
 3         super.onSizeChanged(w, h, oldw, oldh);
 4         int cW = (Math.min(w, h) - 10) / 4;
 5 
 6         addCards(cW, cW);
 7 
 8         startGame();
 9     }
10 
11     private void startGame() {
12         MainActivity aty = MainActivity.getMainActivity();
13         aty.clearScore();
14 
15         for (int y = 0; y < 4; y++) {
16             for (int x = 0; x < 4; x++) {
17                 cardsMap[x][y].setNum(0);
18             }
19         }
20         addRandomNum();
21         addRandomNum();
22     }

2、建立一个二维数组用于存储卡面上的值

3、建立一个list<point>用于存储每个卡片的位置

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private Card[][] cardsMap = new Card[4][4]; private List<Point> emptyPoints = new ArrayList<Point>(); private void addCards(intcardWidth, int cardHeight) {     Card c;     LinearLayout line;     LinearLayout.LayoutParams lineLp;     for(int y = 0; y < 4; y++) {         line =new LinearLayout(getContext());         lineLp = new LayoutParams(-1, cardHeight);         addView(line, lineLp);         for (intx = 0; x <4; x++) {             c = new Card(getContext());             line.addView(c, cardWidth, cardHeight);             cardsMap[x][y] = c;         }     } }

　　

4、游戏开始时进行，添加随机卡片数据。

private void addRandomNum() {
        emptyPoints.clear();
        for (int y = 0; y < 4; y++) {
            for (int x = 0; x < 4; x++) {
                if (cardsMap[x][y].getNum() <= 0) {
                    emptyPoints.add(new Point(x, y));
                }
            }
        }
        if (emptyPoints.size() > 0) {
            Point p = emptyPoints.remove((int) (Math.random() * emptyPoints.size()));
            cardsMap[p.x][p.y].setNum(Math.random() > 0.1 ? 2 : 4);
        }
    }

5、利用android touch事件进行记录手指在屏幕滑动方向。

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private void initGameView() {         setOrientation(LinearLayout.VERTICAL);         setBackgroundColor(0xffbbada0);         setOnTouchListener(newOnTouchListener() {             private floatstartX                    ,                    startY                    ,                    offsetX                    ,                    offsetY;             @Override             public booleanonTouch(View v, MotionEvent event) {                switch (event.getAction()) {                    case MotionEvent.ACTION_DOWN://当屏幕点击时进行记录点击的X和Y值                        startX = event.getX();                        startY = event.getY();                        break;                    case MotionEvent.ACTION_UP:                        offsetX = event.getX() - startX;//进行计算点击偏移值                        offsetY = event.getY() - startY;                        if (Math.abs(offsetX) > Math.abs(offsetY)) {                            if (offsetX < -5) {                                //left                                swipeLeft();                            } else if (offsetX > 5) {                                //right                                swipeRight();                            }                        } else {                            if (offsetY < -5) {                                //up                                swipeUp();                            } else if (offsetY > 5) {                                //down                                swipeDown();                            }                        }                        break;                }                return true;             }         });     }

　　

6、根据滑动的方向进行循环每个方向的卡片 进行卡片的位置移动及相同的卡片相加

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private void swipeLeft() {     booleanmerge = false;     for(int y = 0; y < 4; y++) {         for(int x = 0; x < 4; x++) {             for (intx1 = x + 1; x1 <4; x1++) {                 if (cardsMap[x1][y].getNum() >0) {                    if (cardsMap[x][y].getNum() <=0) {                        cardsMap[x][y].setNum(cardsMap[x1][y].getNum());                        cardsMap[x1][y].setNum(0);                        x--;                        merge = true;                    } else if (cardsMap[x][y].equals(cardsMap[x1][y])) {                        cardsMap[x][y].setNum(cardsMap[x][y].getNum() * 2);                        cardsMap[x1][y].setNum(0);                        MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());                        merge = true;                    }                    break;                }             }         }         if (merge) {             addRandomNum();             checkComplete();         }     } }