我在 xcode 6.0.1 上收到警告说我需要更新我的项目，所以我做了......
...但后来我遇到了 arc4random() % 的问题
在此更新之前一切正常，但现在我收到以下消息：“线程 1：EXC_ARITHMETIC（代码 = EXC_1386_DIV，子代码 = 0x0）并且游戏崩溃。
我尝试使用 arc4random_uniform 但游戏似乎“暂停”并且没有任何反应。我的意思是我可以看到它进入了 if(bType == pt || bType == pl) 语句，但似乎“暂停”并无休止地循环。
有什么建议么？
-(void)placeInGrid:(CGPoint)place pt:(int)pt pl:(int)pl amount:(int)amountOfbricks{
CCLOG(@"BRICKS:placeInGrid");
//CCLOG(@"pt %d", pt);
//CCLOG(@"pl %d", pl);
int bType = arc4random() % amountOfbricks;
//int bType = arc4random_uniform(amountOfbricks);
if(bType == pt || bType == pl){
CCLOG(@"bType == pt || bType == pl");
[self placeInGrid:place pt:pt pl:pl amount:amountOfbricks];
return;
}
else{
CCLOG(@"else");
CCSpriteBatchNode * b = (CCSpriteBatchNode *)[theGame getChildByTag:kSSheet];
mySprite = [CCSprite spriteWithBatchNode:b rect:[self setBrickType:bType]];
[b addChild:mySprite z:1];
self.bricksType =bType;
[self.mySprite setPosition:place];
}
}
更新：
下面的 if-else 语句在游戏开始时查找保存的数据，以查看它是保存的游戏还是新游戏。
看起来问题是，在项目更新后，游戏认为已经保存了数据并进入第一个 if 语句（ if(gameData)），导致 amountofbricks 等于 0，而不是进入 else amountofbricks 等于 4 的语句。
我不知道如何解决这个问题。
if ([[GameManager sharedGameManager] isContinuePressed] == NO && [[GameManager sharedGameManager] isNewPressed] == YES) {
if(gameData){
CCLOG(@"gameData && isContinuePressed == NO && isNewPressed == YES");
//Set the local instance of myobject to the object held in the gameState filler with the key "myObject"
level = 1;
[[GameManager sharedGameManager] setHScore:[decoder decodeIntegerForKey:@"HighScore"]];
highscore = [[GameManager sharedGameManager] ReturnHScore];
countTime = 300;
AmountOfBricks = [[GameManager sharedGameManager] ReturnAmountOfBricks];
BeginningOfGame = YES;
CCLOG(@"AmountOfBricks %d", AmountOfBricks);
}
else{
CCLOG(@"!gameData && isContinuePressed == NO && isNewPressed == YES");
if([[GameManager sharedGameManager]isThereASavedGame] ==YES){
CCLOG(@"isThereASavedGame == YES");
score = 0;
highscore = [[GameManager sharedGameManager] ReturnHScore];
level = 1;
countTime = 300;
AmountOfBricks = 4;
BeginningOfGame = YES;
CCLOG(@"AmountOfBricks %d", AmountOfBricks);
}
else{
CCLOG(@"isThereASavedGame == NO");
score = 0;
highscore = 0;
level = 1;
countTime = 300;
AmountOfBricks = 4;
BeginningOfGame = YES;
CCLOG(@"AmountOfBricks %d", AmountOfBricks);
}
}
}
更新：我发现了问题。
问题出在我的游戏 manager.m 文件中。
NSMutableData *gameData; NSKeyedUnarchiver *decoder = nil;
NSString *documentPath = [documentsDirectory stringByAppendingPathComponent: @"gameState.dat"];
gameData = [NSData dataWithContentsOfFile:documentPath];//before the update, I as using this line. was working perfectly. after the update I got a warning on this line "incompatible pointer" and xcode recommended to update to the line below but the line below started to return a zero value. which caused the game to crash.
//gameData = [NSMutableData dataWithData:[NSData dataWithContentsOfFile:documentPath]];