/** 产生一个数字 */
public void generateNum() {
if (checkOver()) {
Log.e("TAG", "GAME OVER");
if (mGame2048Listener != null) {
mGame2048Listener.onGameOver();
}
return;
}
if (!isFull()) {
if (isMoveHappen || isMergeHappen) {
Random random = new Random();
int next = random.nextInt(16);
Game2048Item item = mGame2048Items[next];
while (item.getmNumber() != 0) {
next = random.nextInt(16);
item = mGame2048Items[next];
}
item.setmNumber(Math.random() > 0.75 ? 4 : 2);
isMergeHappen = isMoveHappen = false;
}
}
}
/**
* 合并相同的Item
*
* @param row
*/
private void mergeItem(List<Game2048Item> row) {
if (row.size() < 2) return;
for (int j = 0; j < row.size() - 1; j++) {
Game2048Item item1 = row.get(j);
Game2048Item item2 = row.get(j + 1);
if (item1.getmNumber() == item2.getmNumber()) {
isMergeHappen = true;
int val = item1.getmNumber() + item2.getmNumber();
item1.setmNumber(val);
// 加分
mScore += val;
if (mGame2048Listener != null) {
mGame2048Listener.onScoreChange(mScore);
}
// 向前移动
for (int k = j + 1; k < row.size() - 1; k++) {
row.get(k).setmNumber(row.get(k + 1).getmNumber());
}
row.get(row.size() - 1).setmNumber(0);
return;
}
}
}
/** 重新开始游戏 */
public void restart() {
for (Game2048Item item : mGame2048Items) {
item.setmNumber(0);
}
mScore = 0;
if (mGame2048Listener != null) {
mGame2048Listener.onScoreChange(mScore);
}
isMoveHappen = isMergeHappen = true;
generateNum();
}