How do I limit the touch input?

Question

I am building a Sprite Kit game where the player shoots a particle whenever the screen is pressed. How can I limit the touch inputs (let's say 2 recognized touch inputs per second) so that the player can't just quickly tap the screen to get unlimited shots?

Answer 1

Another solution: Create a BOOL (I prefer to work with properties myself, so):

@property (nonatomic, assign) BOOL touchEnabled;

Set it to YES in the scene's init. Then it is fairly simple from thereon:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
     if (self.touchEnabled){
         self.touchEnabled = NO;
         [self shootParticle];
         [self performSelector:@selector(enableTouch) withObject:nil afterDelay:2.0];
     }
...

- (void)shootParticle{
   // whatever...
}

- (void)enableTouch{
   self.touchEnabled = YES;
}