Animation stops after returning from a replace scene call

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Animation stops after returning from a replace scene call

(15 posts) (7 voices)

Started 7 months ago by Chris79
Latest reply from varedis

Tags:

animation

Chris79
Member

Hey guys!

I was just wondering one thing about reactivating animations when you replace the current layer with a previous layer.

For example...

I have a menu layer with animations. I replace it with the options layer and then go back to the menu layer. The animations work.

BUT

if I replace the menu layer with the game scene layer and then go back to the menu layer, then the animations won't work.

I checked my back to main menu method in both my options layer and my game scene layer method but they look the same.

I've used [[GameManager sharedGameManager] runSceneWithID:kMainMenuScene]; in both methods.

am I missing anything?

Posted 7 months ago #
Dragyn
Member

The first place I'd check is to see if the game scene layer is really going away when you go back to the menu. Since the menu->options->menu works, then you're probably doing something that is keeping the game scene layer alive, and it is grabbing your touches so the menu doesn't work.

The most common culprit seems to be registering a touch handler for the layer without unregistering it (usually in onExit - I can't recall the exact "remove" command off the top of my head). Everything else will go away, but that will still be alive and sending the touches to la-la-land.

Other than that, make sure nothing is keeping a reference to the game scene layer (like in a singleton or other persisted data source) that could keep it alive, but not visible.

Good luck!

Posted 7 months ago #
Chris79
Member

hey Dragyn!

Thanks for the input.

I'll take a look and let you know how it turned out :)

Posted 6 months ago #
clarus
Member

Also, make sure that if you override onExit and/or onEnter that you call their supers in the methods. Those set the isRunning flag that so much depends on.

Posted 6 months ago #
Chris79
Member
@clarus:

Stupied question but...

...How do I override them?

I tried with the following if statements but still nothing. it feels like I'm missing something. i checked the code over and over again but I can't locate the problem
```
- (void)onEnter{
        if(!ExitCurrentGame){
	   [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
	   [super onEnter];
        }
}

- (void)onExit{
        if(ExitCurrentGame){
	   [[CCTouchDispatcher sharedDispatcher] removeDelegate:self];
	   [super onExit];
        }
}
```
By the way... I found this thread http://www.cocos2d-iphone.org/forum/topic/4172 which is similar to my problem
Posted 6 months ago #
callispo
Member

I guess your code is faulty, you ALWAYS have to call the super methods.

Replace your code with this:

- (void)onEnter{
if(!ExitCurrentGame){
[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
}
[super onEnter];
}

- (void)onExit{
if(ExitCurrentGame){
[[CCTouchDispatcher sharedDispatcher] removeDelegate:self];
}
[super onExit];
}

Hope that helps.

Posted 6 months ago #
Chris79
Member

@callispo:

Thanks for the quick reply.

I already tried that. It didn't work. :(

I'm guessing that the issue may lie somewhere else in my code

Posted 6 months ago #
ultrakorne
Member

i have encountered a similar issue..
i did without scenes, but i m interested if you find the problem

Posted 6 months ago #
Chris79
Member

@ultrakorne:

I found out which method was causing the problem with the animations, it was the pause game method.

I'm not sure if this solution can help you with your issue but it worked fine with mine...

...I noticed that I had paused the shareddirector in the pause game method ([[CCDirector sharedDirector] pause]; ) to be able to pause the timer etc during that specific view and that I only resumed it again when I pressed the resume game button.

ergo... no working animations in any other scenes since the shareddirector still was on pause when exiting the game.

I solved this by calling [[CCDirector sharedDirector] resume]; after pressing the return to main menu button and just before exiting the game.

Hope this solution can be any help :)

Posted 6 months ago #
ultrakorne
Member

thx, i'll try that,
but this needs to be fixed in code its just a bug imho.

Posted 6 months ago #
Dragyn
Member

@ultrakorne: It's not a bug. If you tell the director to pause, it pauses. Since the director controls everything in cocos2D, having it resume itself would be a bug. An explicitly paused member (director) should only unpause when resume is called, and not on its own.

If you need to pause your game, but still have animations, actions, etc. functional during the pause menu, then you need to make a custom pause method that will pause the individual elements of your scene/layer that should be paused, and code a resume method to allow the game to continue as normal. There is absolutely no way that cocos2D can know what you want paused and what you want alive if you use the director-level pause/resume.

Posted 6 months ago #
ultrakorne
Member

the problem is different.
if the game is "paused" (using pauseallaction and selectors on various elements) and you replace a scene then you go back to that scene and resume it, the game will not resume correctly

Posted 6 months ago #
Stephen Morris
Member

@ultrakorne

That doesn't even make sense. If you replace a scene, that scene is then deallocated therefore removing all the sprites, actions etc. If you then go back to the original scene, you are essentially creating a new scene (with new sprites etc.)

Posted 6 months ago #
ultrakorne
Member

@stephen Morris
i manually retain the scene

Posted 6 months ago #
varedis
Moderator

@ultrakorne - If you are replacing the scene you can not just simply resume it and expect it to be in the previous state, it will replace everything like @Stephen_Morris said.

You may want to look at pushing and popping the scene instead, as that should keep the previous state when you pop back into the scene.

Posted 6 months ago #

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