cocos2d for iPhone

A fast, easy to use, free, and community supported 2D game engine

1. 

   fms
   Member

   Hello,

   I want my game level to last 1 minute. When that happens a "finish" menu appears with some options.

   I'm doing this with a CCDelayTime of 60 seconds and after that a call of the method of that makes the "finish" method appear.
   But there's a problem, when I pause the game, the delay time keeps running.

   Is there a way of controlling the time so I can pause it too when the "pause" menu appears and retime when the "resume" button is pressed??

   Thanks

   Posted 9 months ago #
2. 

   cocos2dbeginner
   Member

   [mySprite pauseAction]? Wouldn't that work? Sorry I don't even know if this method exists..currently not on my mac..

   If not you could just stop the action save the time which is left till the finish and than if the pause menu disappears you could run the action again but with the saved time which is left.

   Posted 9 months ago #
3. 

   fms
   Member

   Thanks. I also thought about that but I don't know how to retrieve the time from a CCDelayTime action.

   If I could do that it would be perfect.

   Posted 9 months ago #
4. 

   Duckwit
   Member

   You could just try using simple timers, like I do.
   In your tick method, or somewhere that gets called every game update put something like:
   

   static int timer = 0;
   if (timer == 3600) {
   timer = 0;
   //End your game here}
   timer++;

   Posted 9 months ago #
5. 

   skyhawk
   Member

   Duckwit, that's a terrible idea (because of ∆time)

   Posted 9 months ago #
6. 

   Techy
   Member

   Couldn't you do kind of what Duckwit suggested inside like a tick method and use the delta time:
   

   - (void) tick:(ccTime)dt {
        time += dt;
   }

   that will be much more accurate than:
   

   - (void) tick:(ccTime)dt {
        time ++;
   }

   Posted 9 months ago #
7. 

   bryce
   Member

   I use something very similar and it works great... something like this:

   -(void) update:(ccTime)dt
   {
   	elapsedTime_ += dt;
   
   		// update  Timer
   		if ((elapsedTime_ - lastTick_) > 1.0f && [game_ timer] > 0)
   		{
   			lastTick_ = elapsedTime_;
   		        // Do stuff... update timer label etc.
   		}		
   
   }

   Posted 9 months ago #
8. 

   fms
   Member

   Thank you all for your replies.

   I don't understand very well how the timer works. I mean where do I determine that the "timer" variable is going to increase every second.

   Besides, I think that the update method is scheduled faster than one second, isn't it???

   Posted 9 months ago #
9. 

   bryce
   Member

   Yes, that is what the elapsedTime and lastTick is for... if you notice I have if (elapsedTime - lastTick > 1.0f)... that means if it's been 1 second, do something.

   It works very well, give it a try. I use this in my game which has a level timer and when it hits 0 the game is over.

   Edit: Make sure you declare your elapsedTime and lastTick in your .h file:
   

   ccTime	elapsedTime_;
   	ccTime	lastBombTick_;

   Posted 9 months ago #
10. 

    fms
    Member

    Oh I thought of something...

    I could schedule a method with an interval of 1 second. For example a method called "time".

    It would be like this

    int var=0;

    -(void)time:(id)sender
    {

    var++;

    if(var==60)
    {

    Call "fail" method.
    }

    }

    Would that be right??

    Posted 9 months ago #
11. 

    fms
    Member

    Or that would be as Duckwit suggested??

    Posted 9 months ago #
12. 

    bryce
    Member

    Here, I'll write it for you.
    .h file:
    

    ccTime	elapsedTime_;
    ccTime	lastTick_;
    unsigned int timer_;

    .mm file init:
    

    timer_ = 60;
    [self scheduleUpdateWithPriority:10];

    .mm file update:
    

    -(void) update:(ccTime)dt
    {
    	elapsedTime_ += dt;
    
        // update Timer
        if ((elapsedTime_ - lastTick_) > 1.0f && timer_ > 0)
        {
            lastTick_ = elapsedTime_;
            timer_ --;
            if (timer_ <= 0) {
    				// Game is over
            }
        }
    }

    Posted 9 months ago #
13. 

    fms
    Member

    Ok thank you I'll try it out

    Posted 9 months ago #
14. 

    fms
    Member

    I have a question, the command

    [self scheduleUpdateWithPriority:10];

    What does that do??

    and

    How do I tell that I the update: method is going to be linked to that UpdateWithPriority thing??

    Because I already have and update method. Does it get linked automatically with that priority???

    Posted 9 months ago #
15. 

    bryce
    Member

    If you already have an update scheduled, just use yours and ignore that one. [self scheduleUpdate] is the same as [self scheduleUpdateWithPriority:0]. I just used 10 because it wasn't as high of priority as some of my other updates, so I used 10. The lower the number is the higher the priority.

    Posted 9 months ago #
16. 

    fms
    Member

    All right thank you very much.

    Posted 9 months ago #
17. 

    Duckwit
    Member

    Sorry, could someone explain why method isn't the most desirably approachable?

    Posted 9 months ago #
18. 

    cocojoe
    Member

    Here are a few methods I currently use to manage my game clock which also updates a visual timer.

    -(void) stopClock
    {
    	[self unschedule: @selector(processClock:)];
    }
    
    -(void) startClock
    {
    	[self schedule: @selector(processClock:) interval:GAME_CLOCK_STEP];
    }
    
    -(void) processClock: (ccTime) dt
    {
        clkTimer-=GAME_CLOCK_STEP;
        if(clkTimer<=0)
        {
            [labelTimeCounter setString:[self secondsToString:clkTimer]];
    
            // End Level
            MainGameLayer *gameLayer = (MainGameLayer*)[self parent];
            [gameLayer levelComplete];
            return;
        }
    
        [labelTimeCounter setString:[self secondsToString:clkTimer]];
    }

    Posted 9 months ago #

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