Question

simply, before I start new level of my game, I show countdown (using CCLabelTTF, Cocos2D).

I have this code:

centerLevelLabel.string=@"New level";
centerLevelLabel.visible=true;
[centerLevelLabel runAction:[CCFadeOut actionWithDuration:1]];


while (centerLevelLabel.numberOfRunningActions>0) {

}

centerLevelLabel.string=@"3";
while (centerLevelLabel.numberOfRunningActions>0) {

}



centerLevelLabel.string=@"2";
while (centerLevelLabel.numberOfRunningActions>0) {

}

centerLevelLabel.string=@"1";
while (centerLevelLabel.numberOfRunningActions>0) {

}

//some code bellow

I want to show thist label and then I need continue with code bellow. Problem is, that UI is freezed and in first while block is running infinite loop. But i don`t kwon why, because when running actions is finished, numberOfRunningActions is zero.

Is there any other way, how could I wait for end of running actions and then continue?

Thank you

Answer 1

You could serialize the action by using a CCSequence and add the CCCallFuncN to execute some code after the original action completes.

id action1 = [CCFadeOut actionWithDuration:1];
id action2 = [CCCallFuncN actionWithTarget:self selector:@selector(finishedRunning)];
id sequenceActions = [CCSequence actions:action1, action2, nil]];

[centerLevelLabel runAction:sequenceActions];

….

   -(void) finishedRunning {
      // Do stuff after action finishes
   }