CODEWITHSUNDEEP
objective-ciostimerdelay
user1364831
user1364831

Reputation:

ios - how to cause a delay in the middle of a method

I'm working on a card game and trying to get cards to deal one after the other. I have a method that animated a card from the deck to a player, and in viewDidLoad I call this method four times. The problem is all four cards get dealt simultaneously. How do I stop a method in its tracks for a period of time?

I know that the scheduledTimerWithTimeInterval method calls another method after a delay, but I'm looking for a way to interrupt the current method after calling the deal method once and then continuing with the rest of the current method. sleep() also doesn't work. I tried putting it between calls to the deal method, but it just executed all the sleep()s and then did all the animation at once again. Any help is much appreciated. Thanks!

Upvotes: 1

Views: 1074

Answers (2)

spring
spring

Reputation: 18487

You are going down the wrong road. Attempting to sleep a method is not the way to approach this. You want to break the task into steps to be performed serially and perform each step only after the previous step is completed.

Say you have a variable called 'cardCounter' and one called 'cardMax'. Then you have a method called 'dealCard'. In viewDidAppear you intialize 'cardCounter` to zero and 'cardMax' to 4 (or however many cards are to be dealt. Then you call the 'dealCard' method.

(actually, you probably want a method called newGame or something since you will likely want to have multiple games and you don't want to tie your game setup to the viewDidAppear event. So in viewDidAppear you would call 'newGame' and do your initialization there.)

- (void)dealCard {

  cardCounter++;

  if (cardCounter > cardMax){
   // all cards are dealt
   // call some method to start game
   // or do any other set up;

  } else {

   // call some method to animate the card
   // using core animation with a completion handler?
   // using a ^block with a completion handler?

   // either way, in the completion handler call
   // 'dealCard' again
}

Upvotes: 3

Thomas
Thomas

Reputation: 330

A hint. Create a setup method which is called from your init only once! In that setup method you can work with `performSelector" as tomi said. The Selector is "your" method that moves a card from the deck to the player.

(void)performSelector:(SEL)aSelector withObject:(id)anArgument afterDelay:(NSTimeInterval)delay

Upvotes: 0

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