How can I create a count down timer for cocos2d?(如何为 cocos2d 创建倒数计时器?)

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问题描述

I am developing a 2D iPhone game by using cocos2d. I need a countdown timer. How can I create a count down timer in cocos2d?

解决方案

Not enough rep to upvote Tom, but he's absolutely right. Within the context of this question, NSTimer is the WRONG solution. The Cocos2d framework provides a scheduler that integrates with other game features like Pause/Resume (and most likely uses NSTimer under the hood).

Example from the above link:

-(id) init
{
    if( ! [super init] )
        return nil;

    // schedule timer
    [self schedule: @selector(tick:)];
    [self schedule: @selector(tick2:) interval:0.5];

    return self;
}

-(void) tick: (CCTime) dt
{
    // bla bla bla
}

-(void) tick2: (CCTime) dt
{
    // bla bla bla
}

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