Question

I obviously know how to use NSTimers, and cocos2d timers , such as :

[self schedule: @selector(updater:) interval:0.5];

but all this timers call a function. i dont want that .

i need a timer that within my method will count, and at the end, will do one operation such as toggle a BOOL , or change an integer.

is there a simple way to do that in 1 line ?

thanks a lot

Answer 1

Try this:

@interface CCScheduler (BlockAddition)

- (id)scheduleAfterDelay:(ccTime)delay block:(void(^)(ccTime dt))block;

@end

@interface NSObject (BlockAddition)

- (void)cc_invokeBlock:(ccTime)dt;

@end

@implementation NSObject (BlockAddition)

- (void)cc_invokeBlock:(ccTime)dt {
    void(^block)(ccTime dt) = (id)self;
    block(dt);
}

@end

@implementation CCScheduler (BlockAddition)

- (id)scheduleAfterDelay:(ccTime)delay block:(void(^)(ccTime dt))block {
    block = [block copy];
    [self scheduleSelector:@selector(cc_invokeBlock:) forTarget:block interval:0 paused:NO repeat:0 delay:delay];
    return block;
}

@end

---

example

[[CCDirector sharedDirector].scheduler scheduleAfterDelay:0.1 block:^(ccTime dt) {
     NSLog("time's up");
}];

or if you are using older version of cocos2d

[[CCScheduler sharedScheduler] scheduleAfterDelay:0.1 block:^(ccTime dt) {
     NSLog("time's up");
}];