什么是更好的方式在iPhone上创建一个游戏循环，而不是使用NSTimer？ [英] What is a better way to create a game loop on the iPhone other than using NSTimer?

问题描述

我在iPhone上编程游戏。我目前使用NSTimer触发我的游戏更新/渲染。这个问题是（在性能分析后）我似乎在更新/渲染之间丢失了很多时间，这似乎主要是与我插入NSTimer的时间间隔。

I am programming a game on the iPhone. I am currently using NSTimer to trigger my game update/render. The problem with this is that (after profiling) I appear to lose a lot of time between updates/renders and this seems to be mostly to do with the time interval that I plug into NSTimer.

所以我的问题是什么是使用NSTimer的最好的替代方法？

So my question is what is the best alternative to using NSTimer?

/ p>

One alternative per answer please.

推荐答案

你可以通过线程获得更好的性能，尝试这样：

You can get a better performance with threads, try something like this:

- (void) gameLoop
{
    while (running)
    {
        NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
        [self renderFrame];
        [pool release];
    }
}

- (void) startLoop
{
    running = YES;
#ifdef THREADED_ANIMATION
    [NSThread detachNewThreadSelector:@selector(gameLoop)
    toTarget:self withObject:nil];
#else
    timer = [NSTimer scheduledTimerWithTimeInterval:1.0f/60
    target:self selector:@selector(renderFrame) userInfo:nil repeats:YES];
#endif
}

- (void) stopLoop
{
    [timer invalidate];
    running = NO;
}

在 renderFrame 方法准备帧缓冲区，绘制帧并在屏幕上呈现帧缓冲区。 （PS有关各种类型的游戏循环及其优点和缺点的伟大的文章。）

In the renderFrame method You prepare the framebuffer, draw frame and present the framebuffer on screen. (P.S. There is a great article on various types of game loops and their pros and cons.)

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