3.检测游戏结果
每落一个棋子就要多游戏结果进行一次检查,判断四个方向上是否有大于等于5个同色的棋子连成一线,有则提示游戏输赢结果,无则游戏继续.算法为,从当前棋子位置向前遍历,直到遇到与自己不同色的棋子,累加同色棋子的个数,再往后遍历,直到遇到与自己不同色的棋子,累加同色棋子的个数.得到该方向相连同色棋子的总个数
代码如下
//判断是否大于等于五个同色相连
- (BOOL)checkResult:(NSInteger)col andRow:(NSInteger)row andColor:(BOOL)isBlack andDirection:(GmkDirection)direction{
if (self.sameChessmanArray.count >= 5) {
return YES;
}
UIColor * currentChessmanColor = [self.chessmanDict[[NSString stringWithFormat:@"%ld-%ld",col,row]] backgroundColor];
[self.sameChessmanArray addObject:self.chessmanDict[self.lastKey]];
switch (direction) {
//水平方向检查结果
case GmkHorizontal:{
//向前遍历
for (NSInteger i = col - 1; i > 0; i --) {
NSString * key = [NSString stringWithFormat:@"%ld-%ld",i,row];
if (![self.chessmanDict.allKeys containsObject:key] || [self.chessmanDict[key] backgroundColor] != currentChessmanColor) break;
[self.sameChessmanArray addObject:self.chessmanDict[key]];
}
//向后遍历
for (NSInteger i = col + 1; i < kGridCount; i ++) {
NSString * key = [NSString stringWithFormat:@"%ld-%ld",i,row];
if (![self.chessmanDict.allKeys containsObject:key] || [self.chessmanDict[key] backgroundColor] != currentChessmanColor) break;
[self.sameChessmanArray addObject:self.chessmanDict[key]];
}
if (self.sameChessmanArray.count >= 5) {
[self alertResult];
return YES;
}
[self.sameChessmanArray removeAllObjects];
}
break;
case GmkVertical:{
//向前遍历
for (NSInteger i = row - 1; i > 0; i --) {
NSString * key = [NSString stringWithFormat:@"%ld-%ld",col,i];
if (![self.chessmanDict.allKeys containsObject:key] || [self.chessmanDict[key] backgroundColor] != currentChessmanColor) break;
[self.sameChessmanArray addObject:self.chessmanDict[key]];
}
//向后遍历
for (NSInteger i = row + 1; i < kGridCount; i ++) {
NSString * key = [NSString stringWithFormat:@"%ld-%ld",col,i];
if (![self.chessmanDict.allKeys containsObject:key] || [self.chessmanDict[key] backgroundColor] != currentChessmanColor) break;
[self.sameChessmanArray addObject:self.chessmanDict[key]];
}
if (self.sameChessmanArray.count >= 5) {
[self alertResult];
return YES;
}
[self.sameChessmanArray removeAllObjects];
}
break;
case GmkObliqueDown:{
//向前遍历
NSInteger j = col - 1;
for (NSInteger i = row - 1; i >= 0; i--,j--) {
NSString * key = [NSString stringWithFormat:@"%ld-%ld",j,i];
if (![self.chessmanDict.allKeys containsObject:key] || [self.chessmanDict[key] backgroundColor] != currentChessmanColor || j < 0) break;
[self.sameChessmanArray addObject:self.chessmanDict[key]];
}
//向后遍历
j = col + 1;
for (NSInteger i = row + 1 ; i < kGridCount; i++,j++) {
NSString * key = [NSString stringWithFormat:@"%ld-%ld",j,i];
if (![self.chessmanDict.allKeys containsObject:key] || [self.chessmanDict[key] backgroundColor] != currentChessmanColor || j > kGridCount) break;
[self.sameChessmanArray addObject:self.chessmanDict[key]];
}
if (self.sameChessmanArray.count >= 5) {
[self alertResult];
return YES;
}
[self.sameChessmanArray removeAllObjects];
}
break;
case GmkObliqueUp:{
//向前遍历
NSInteger j = col + 1;
for (NSInteger i = row - 1; i >= 0; i--,j++) {
NSString * key = [NSString stringWithFormat:@"%ld-%ld",j,i];
if (![self.chessmanDict.allKeys containsObject:key] || [self.chessmanDict[key] backgroundColor] != currentChessmanColor || j > kGridCount) break;
[self.sameChessmanArray addObject:self.chessmanDict[key]];
}
//向后遍历
j = col - 1;
for (NSInteger i = row + 1 ; i < kGridCount; i++,j--) {
NSString * key = [NSString stringWithFormat:@"%ld-%ld",j,i];
if (![self.chessmanDict.allKeys containsObject:key] || [self.chessmanDict[key] backgroundColor] != currentChessmanColor || j < 0) break;
[self.sameChessmanArray addObject:self.chessmanDict[key]];
}
if (self.sameChessmanArray.count >= 5) {
[self alertResult];
return YES;
}
[self.sameChessmanArray removeAllObjects];
}
break;
}
return NO;
}
