cocos2d for iPhone

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

1. 

   Bongeh
   Member

   I want to make a pause menu that appears when i pause my game.

   I understand that there are several things here i can use.

   I could 'push' the old scene making my current scene freeze and bringing in a new one

   PauseScene *ps = [PauseScene node];
   [[CCDirector sharedDirector] pushScene:ps];

   the only problem here is the old scene is not left in the background, its hidden away in memory.

   I can pause the game using the following command

   [[CCDirector sharedDirector] pause];

   and then pull in a new layer to the current scene.

   although i think touches may pass onto the gamescene that is paused behind and 'stack up' so that when you unpause, it may do lots of things you did not expect.

   What is the correct way to do this? or a suggested way that someone has found works and is wiling to share?

   Posted 1 year ago #
2. 

   patrickC
   Member

   I normally pause only the scheduler and tick of the physics (not a whole director pause), so that I stay at 60fps and still have full control of what's happening, except that nothing is moving :)
   I then overlay a ColorLayer (black with 50% opacity), which is set to accept touches and not propagate them with whatever I need (buttons, sprites, etc).
   Then when unpausing I just remove this layer, resume scheduler, tick, etc.
   All done :)

   Posted 1 year ago #
3. 

   Bongeh
   Member

   i see, so my second thought is correct then?, is a colorLayer better than using a layer with a transparent png bg? im guessing yes on the texture memory side?

   i have a singleton called GameManager that has alot of my schedulers so i'll probably give it a function that pauses all the schedulers, i dont have any physics as such, just chipmunk for collision detection, no reactions are needed.

   thanks for the speedy reply! :)

   Posted 1 year ago #
4. 

   patrickC
   Member

   Your second thought was correct yes, but as I said I wouldn't pause the whole director but only the schedulers in your GameManager singleton.

   A ColorLayer is much more forgiving on memory than an image yes.

   Glad I could help ;)

   Posted 1 year ago #
5. 

   Bongeh
   Member

   thanks again :)

   i just checked out your site...

   Boobies. class app dude ;)

   Posted 1 year ago #
6. 

   patrickC
   Member

   Hehe, unfortunately boobies didn't make it through the review process and will never see the light of day... :(

   Apple does not allow real-time multitouch interaction with deformable body parts, as it is considered "obscene"...
   Too bad :)

   Posted 1 year ago #
7. 

   Bongeh
   Member

   what about shaking the iphone to make them jiggle? lol, thats not multitouch thats accelerometer! :)

   Posted 1 year ago #
8. 

   oxygene
   Member

   @patrickC just wondering how you properly pause only the scheduler and tick of the physics?

   Posted 1 year ago #
9. 

   oxygene
   Member

   The reason I'm after this functionality is because I'd like my PauseLayer to be able to display animations and the current scene to pause. Is something like this possible?

   I usually use the following to pause my scene:

   [[CCDirector sharedDirector] pause];

   But in doing that it also pauses the animations within my PauseLayer, which I don't want happening.

   Posted 1 year ago #
10. 

    patrickC
    Member

    Well it depends on what you're doing.
    If you're calling a pause on the director then you're pausing all of cocos2d.

    What I do is simply unschedule my selector(s) and stop all my actions (and obviously display the pause layer)
    Then, when I resume, I re-schedule the needed selectors and resume animations or whatever it is you were doing

    This is the pauseGame method of my first game "Mini Taxi", just for reference purposes.
    

    -(void) pauseGame {
    	if(paused) {
    		[self schedule: @selector(timer:) interval:1];
    		[self schedule: @selector(step:)];
    		[self schedule: @selector(carSpawner:) interval:2];
    		[self schedule: @selector(peopleSpawner:) interval:2];
    		[self schedule: @selector(playEngineSound:) interval:0.1f];
    		if(mayhemActive&&!soundMute)
    			[soundEngine playSound:SND_ID_BONUSLOOP channelGroupId:CGROUP_BONUSLOOP pitch:1.0f pan:0.0f gain:1.0f loop:YES];
    		Person *tempPerson;
    		for(tempPerson in peopleActive) {
    			[tempPerson walkAgain];
    		}
    		paused=0;
    	}
    	else {
    		[soundEngine stopChannelGroup:CGROUP_DRUM_VOICES];
    		if(mayhemActive)
    			[soundEngine stopChannelGroup:CGROUP_BONUSLOOP];
    		[self unschedule: @selector(timer:)];
    		[self unschedule: @selector(step:)];
    		[self unschedule: @selector(carSpawner:)];
    		[self unschedule: @selector(peopleSpawner:)];
    		[self unschedule: @selector(playEngineSound:)];
    		Person *tempPerson;
    		for(tempPerson in peopleActive) {
    			[tempPerson stopWalking];
    		}
    		paused=1;
    	}
    }

    If I'm not mistaken riq added a method to pause a layer only, rather than the whole director, I've never used it but you should look into that (then again, I might be confusing it with something else)

    Posted 1 year ago #
11. 

    dany
    Member

    thanks patrick, i'm using your approach for pause (schedule\unschedule ticks) instead of CCDirector pause, nice share.

    Posted 1 year ago #
12. 

    PingPongRhino
    Member

    Sorry to open up a year old thread, but this solution was not obvious to me and it worked out really well for my purposes so i wanted to share. This was how I got my transparent pause menu to work.

    - (void)pauseSchedulerAndActionsRecursive:(CCNode *)node {
        [node pauseSchedulerAndActions];
        for (CCNode *child in [node children]) {
            [self pauseSchedulerAndActionsRecursive:child];
        }
    }
    
    - (void)resumeSchedulerAndActionsRecursive:(CCNode *)node {
        [node resumeSchedulerAndActions];
        for (CCNode *child in [node children]) {
            [self resumeSchedulerAndActionsRecursive:child];
        }
    }

    I have one scene and two layers, a stage/gameplay layer and a menu layer. My menus animate in and out, and I wanted my pause menu to be able to animate in and out as well. So I just added the above functions to my stage/gameplay layer. Then when the user hits pause, I call pauseSchedulerAndActionsRecursive: on my stage/gameplay layer and add my menu layer to the scene on top. My menu swallows all the touches, so touching is also disabled on the stage/gameplay layer while the menu layer is up. Then just call resumeSchedulerAndActionsRecursive: method to resume. Hope this helps someone out.

    Posted 4 months ago #

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