Question

我为Game Over Scene创建了View Controller。当我从Game Over ViewController重启游戏时，fps正在关闭。第一次我的fps是30+，当我重新开始游戏时它会关闭到20，然后我又重新启动它关闭到10 ... 有时我看到这个错误：GameOverViewController的开始/结束外观转换的不平衡调用：0x9bb8490＆gt;。

ViewController.m

- (void)awakeFromNib {
[[NSNotificationCenter defaultCenter]
 addObserver:self
 selector:@selector(goToGameOverViewController:)
 name:@"GoToGameOverViewController"
 object:nil];
}

-(void)goToGameOverViewController:(NSNotification *) notification {
GameOverViewController *gameOverController = [self.storyboard   instantiateViewControllerWithIdentifier:@"GameOverViewController"];

[self.navigationController pushViewController:gameOverController animated:NO];
 }
------------------------------------------------------------------------------

MyScene.m


- (void)gameOver {
[[NSNotificationCenter defaultCenter]
 postNotificationName:@"GoToGameOverViewController" object:self];
}

GameOverView.m


-(void)playPressed
{
GameViewController *gameController = [self.storyboard instantiateViewControllerWithIdentifier:@"GameViewController"];

[self.navigationController pushViewController:gameController animated:YES];
}

-(void)createPlayButton
{
UIButton *playBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[self.view addSubview:playBtn];

playBtn.frame = CGRectMake(100, 100, 200, 44);
[playBtn setTitle:@"Play Again" forState:UIControlStateNormal];
[playBtn sizeToFit];
[playBtn addTarget:self action:@selector(playPressed)  forControlEvents:UIControlEventTouchUpInside];
}

Answer 1

您的代码和方法存在几个核心问题：

您不断将UIViewController推送到UINavigationController。相反，也许在游戏结束后，您可以拨打popToRootViewControllerAnimated:或其他人。你推动堆栈的每个UIViewController都会永远存在。
您永远不会从NSNotificationCenter移除观察者。这意味着每次完成一个关卡时，每个viewController都会尝试推送一个GameOver viewController。这就是造成“不平衡......”警告的原因。如果您遵循我的＃1建议，您只需要覆盖dealloc并调用以下代码来解决该问题。

在playPressed中使用此代码：

GameViewController *gameController = [self.storyboard instantiateViewControllerWithIdentifier:@"GameViewController"];
[self.navigationController setViewControllers:@[gameController] animated:YES];

后来在GameViewController

-(void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self]
}

这将确保您的ViewController以及您的场景被取消分配，并且您没有多个ViewController尝试同时推送游戏。

Answer 2

请确保从SKScene离开时ViewController释放：

-(void)goToGameOverViewController:(NSNotification *) notification {
    [((SKView *)self.view) presentScene:nil];

    GameOverViewController *gameOverController = [self.storyboard   instantiateViewControllerWithIdentifier:@"GameOverViewController"];

    [self.navigationController pushViewController:gameOverController animated:NO];
}

游戏fps关闭

2 个答案: