所以这个循环在skscene中运行。它在我的多人游戏中完美运行，但是..在单人游戏模式下，它的工作效果不是很好......
问题是，它意味着迭代执行快速动画的循环。但是，整个过程只是在循环结束时冻结并动画化。
for (int i = 0; i < 7; i++) {
//to loop between players
for (int j = 0; j < 4; j++) {
NSString *imageName = [NSString stringWithFormat:@"back"];
NSString *bundle = [[NSBundle mainBundle] pathForResource:imageName ofType:@"png"];
UIImage *image = [[UIImage alloc] initWithContentsOfFile:bundle];
SKTexture *texture = [SKTexture textureWithImage:image];
cardDisplay = [CardSpriteNode spriteNodeWithTexture:texture];
cardDisplay.size = CGSizeMake(104, 144);
cardDisplay.position = _dealPosition;
cardDisplay.zPosition = zPosCount;
zPosCount++;
cardDisplay.userInteractionEnabled = YES;
cardDisplay.name = @"cardBack";
[self addChild:cardDisplay];
CGPoint moveToPosition;
//change position to deal to
if (j == 0) {
moveToPosition = position1;
}
else if (j == 1) {
moveToPosition = position2;
}
else if (j == 2) {
moveToPosition = position3;
}
else if (j == 3) {
moveToPosition = position4;
}
[cardDisplay runAction:[SKAction moveTo:moveToPosition duration:0.3]];
[cardDisplay runAction:[SKAction fadeOutWithDuration:0.4]];
[NSThread sleepForTimeInterval:0.1];
if (i == 6 && j == 4 - 1) {
SKNode *node = [self childNodeWithName:@"cardBack"];
[node removeAllChildren];
for (int p = 0; p < [playerCards count]; p++) {
addBegin = p * (cardDisplay.size.width / 3.0);
NSString *imageName = [NSString stringWithFormat:@"%@", playerCards[p]];
NSString *bundle = [[NSBundle mainBundle] pathForResource:imageName ofType:@"png"];
UIImage *image = [[UIImage alloc] initWithContentsOfFile:bundle];
SKTexture *texture = [SKTexture textureWithImage:image];
cardDisplay = [CardSpriteNode spriteNodeWithTexture:texture];
cardDisplay.size = CGSizeMake(104, 144);
cardDisplay.anchorPoint = CGPointMake(0.5, 0.5);
cardDisplay.position = CGPointMake(-self.frame.size.width/2.8 + addBegin, -300);
cardDisplay.zPosition = 1;
cardDisplay.userInteractionEnabled = NO;
cardDisplay.name = [NSString stringWithFormat:@"%@", playerCards[p]];
[self addChild:cardDisplay];
CGPoint moveToNewPosition = CGPointMake(-self.frame.size.width/2.8 + addBegin, -218);
[cardDisplay runAction:[SKAction moveTo:moveToNewPosition duration:1]];
[NSThread sleepForTimeInterval:0.2];
}
}
}
}
就像我说的那样，这在我的其他skscene中运行良好，但是在这个中它并没有，并且据我所知，一切都已初始化。
答案 0 :(得分：3)
来自Apple的文档：
Grand Central Dispatch（GCD）包括语言功能，运行时库和系统增强功能，可为iOS和OS X中多核硬件上的并发代码执行提供系统，全面的改进。
使用GCD非常简单。以下是使用GCD在单独的线程上执行代码的示例。
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
for (int i = 0; i < 7; i++) {
//to loop between players
for (int j = 0; j < 4; j++) {
NSString *imageName = [NSString stringWithFormat:@"back"];
NSString *bundle = [[NSBundle mainBundle] pathForResource:imageName ofType:@"png"];
UIImage *image = [[UIImage alloc] initWithContentsOfFile:bundle];
SKTexture *texture = [SKTexture textureWithImage:image];
cardDisplay = [CardSpriteNode spriteNodeWithTexture:texture];
cardDisplay.size = CGSizeMake(104, 144);
cardDisplay.position = _dealPosition;
cardDisplay.zPosition = zPosCount;
zPosCount++;
cardDisplay.userInteractionEnabled = YES;
cardDisplay.name = @"cardBack";
dispatch_async(dispatch_get_main_queue(), ^(void){
[self addChild:cardDisplay];
});
CGPoint moveToPosition;
//change position to deal to
if (j == 0) {
moveToPosition = position1;
}
else if (j == 1) {
moveToPosition = position2;
}
else if (j == 2) {
moveToPosition = position3;
}
else if (j == 3) {
moveToPosition = position4;
}
[cardDisplay runAction:[SKAction moveTo:moveToPosition duration:0.3]];
[cardDisplay runAction:[SKAction fadeOutWithDuration:0.4]];
[NSThread sleepForTimeInterval:0.1];
if (i == 6 && j == 4 - 1) {
SKNode *node = [self childNodeWithName:@"cardBack"];
[node removeAllChildren];
for (int p = 0; p < [playerCards count]; p++) {
addBegin = p * (cardDisplay.size.width / 3.0);
NSString *imageName = [NSString stringWithFormat:@"%@", playerCards[p]];
NSString *bundle = [[NSBundle mainBundle] pathForResource:imageName ofType:@"png"];
UIImage *image = [[UIImage alloc] initWithContentsOfFile:bundle];
SKTexture *texture = [SKTexture textureWithImage:image];
cardDisplay = [CardSpriteNode spriteNodeWithTexture:texture];
cardDisplay.size = CGSizeMake(104, 144);
cardDisplay.anchorPoint = CGPointMake(0.5, 0.5);
cardDisplay.position = CGPointMake(-self.frame.size.width/2.8 + addBegin, -300);
cardDisplay.zPosition = 1;
cardDisplay.userInteractionEnabled = NO;
cardDisplay.name = [NSString stringWithFormat:@"%@", playerCards[p]];
dispatch_async(dispatch_get_main_queue(), ^(void){
[self addChild:cardDisplay];
});
CGPoint moveToNewPosition = CGPointMake(-self.frame.size.width/2.8 + addBegin, -218);
[cardDisplay runAction:[SKAction moveTo:moveToNewPosition duration:1]];
[NSThread sleepForTimeInterval:0.2];
}
}
}
}
});
你会注意到我使用的一些地方：
dispatch_async(dispatch_get_main_queue(), ^(void){
[self addChild:cardDisplay];
});
这将始终包含将影响UI的代码;所有UI代码必须在主线程上执行。
答案 1 :(得分：2)
[self performSelectorInBackground:@selector(dealCards) withObject:self];
不确定原因，但确实有效。
请勿使用此答案。