android 模拟2048

最新推荐文章于 2023-10-08 14:57:06 发布

转载最新推荐文章于 2023-10-08 14:57:06 发布 · 267 阅读

本文介绍了一位开发者如何利用Android平台，在节日休息时间，通过学习和实践来开发并模拟经典游戏2048的过程。文章详细阐述了从游戏界面设计到触摸事件处理，再到游戏规则实现的全过程，包括游戏主界面的布局、二维数组的使用、随机数添加、游戏开始后的操作逻辑，以及利用触摸事件进行游戏控制。通过实际案例，展示了将理论知识应用于实践的有效方法。

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

?
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。

?
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

?
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();
        
}
    }
}
 