五子棋-人人对战（二）

上一篇博客我说到五子棋的点击事件，接下来该说如何判断的问题

5、输赢的判断

首先设置一个类来输出当游戏胜利时的提示

private void checkGameOver() {// TODO Auto-generated method stubboolean whiteWin = checkFiveInLine(mWhiteArray);boolean blackWin = checkFiveInLine(mBlackArray);if (blackWin || whiteWin) {mIsGameOver = true;mIsWhiteWinner = whiteWin;String text = mIsWhiteWinner ? "白棋胜利" : "黑棋胜利";Toast.makeText(getContext(), text, Toast.LENGTH_SHORT).show();}}

并且在onTouchEvent类中要设置当胜利时，不能再点击棋子

        if (mIsGameOver) {// 如果胜利，则不能下子return false;}

然后创建类checkFiveInLine来判断是否五子连珠

private boolean checkFiveInLine(List<Point> points) {// TODO Auto-generated method stubfor (Point point : points) {int x = point.x;// x,y坐标int y = point.y;boolean win = checkHorizontal(x, y, points);if (win) {return true;}win = checkVertical(x, y, points);if (win) {return true;}win = checkLeftDiagonal(x, y, points);if (win) {return true;}win = checkRightDiagonal(x, y, points);if (win) {return true;}}return false;}

因为胜利共有四种方法，即在四个方向上连成五个棋子，所以我们要设置四个类来判断（这里我写其中一个方向的，其他方向都差不多）：

        private int MAX_COUNT_IN_LINE = 5;

// 横向五子连珠时private boolean checkHorizontal(int x, int y, List<Point> points) {// TODO Auto-generated method stubint count = 1;// 左边for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {if (points.contains(new Point(x - i, y))) {count++;} else {break;}}if (count == MAX_COUNT_IN_LINE)return true;// 右边for (int i = 1; i < MAX_COUNT_IN_LINE; i++) {if (points.contains(new Point(x + i, y))) {count++;} else {break;}}if (count == MAX_COUNT_IN_LINE)return true;return false;}

其实，做到这一步就可以了，当我们可以给他加一个数据的储存，防止在屏幕翻转是view的重置将数据丢失

6、数据的存储和读取

private static final String INSTANCE = "instance";private static final String INSTANCE_GAME_OVER = "instance_game_over";private static final String INSTANCE_WHITE_ARRAY = "instance_white_array";private static final String INSTANCE_BLACK_ARRAY = "instance_black_array";//数据的存储@Overrideprotected Parcelable onSaveInstanceState() {// TODO Auto-generated method stubBundle bundle = new Bundle();bundle.putParcelable(INSTANCE, super.onSaveInstanceState());bundle.putBoolean(INSTANCE_GAME_OVER, mIsGameOver);bundle.putParcelableArrayList(INSTANCE_WHITE_ARRAY, mWhiteArray);bundle.putParcelableArrayList(INSTANCE_BLACK_ARRAY, mBlackArray);return bundle;}//数据的读取@Overrideprotected void onRestoreInstanceState(Parcelable state) {// TODO Auto-generated method stubif (state instanceof Bundle) {Bundle bundle = (Bundle) state;mIsGameOver=bundle.getBoolean(INSTANCE_GAME_OVER);mWhiteArray=bundle.getParcelableArrayList(INSTANCE_WHITE_ARRAY);mBlackArray=bundle.getParcelableArrayList(INSTANCE_BLACK_ARRAY);super.onRestoreInstanceState(bundle.getParcelable(INSTANCE));return ;}

7、设置再来一局

注意：用eclipse的可能在layout中看不到menu，这是可能是因为用的Android版本低。你把apk放到手机上就有了，不必去修改代码，强制吧menu显示出来。

设置一个start类，在其中把黑棋和白棋的数据清理

public void start(){mWhiteArray.clear();mBlackArray.clear();mIsGameOver=false;mIsWhiteWinner=false;invalidate();}

在main_activity中声明

wuziqiPanel=(WuziqiPanel) findViewById(R.id.wuziqi);

在onOptionsItemSelected中编写，并且记得layout中的view要有ID，不然start不起作用

    <com.example.wuziqi.WuziqiPanel        android:id="@+id/wuziqi"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_centerInParent="true"         />

@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// TODO Auto-generated method stubint id = item.getItemId();if (id == R.id.action_settings) {wuziqiPanel.start();return true;}return super.onOptionsItemSelected(item);}

好了，这就是全部的思路，我讲的不是很清楚，希望大家多多包涵。

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