cocos2d for iPhone

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

1. 

   shazbox
   Member

   Ok, first I am confused about the onExit function. When is it called? I thought it would only be called when the object exits the screen but mine seems to be called when it enters the screen as well?

   I am probably just doing something stupid. I move from the MainMenuScene to the first level scene using the following lines:
   'Level1Scene * lvl1Scene = [[Level1Scene alloc] init];
   [[Director sharedDirector] replaceScene:lvl1Scene];
   [[Director sharedDirector] replaceScene: [RotoZoomTransition transitionWithDuration:1.5 scene: lvl1Scene]];'

   Level1Scene then adds Level1Layer in its constructor with the following lines (left out the standard constructor lines):
   'Level1Layer * level1 = [[Level1Layer alloc] init];
   [self addChild:level1 z:1];'

   My Level1Layer loads fine but the onExit is called right near the start, not sure why? It is also called when I switch to another scene (which I expected).

   Also, my big issue is confusing with what to do before switching scenes. Currently I call the following two lines every time I am about to switch scenes:
   '[self unschedule:@selector(decTime)];
   [self removeAllChildrenWithCleanup:YES];'

   I'm not sure if thats the right thing to do or not. I thought about putting them in the onExit function but since it gets called at the start I end up with a layer with nothing on it.
   The other problem is that when I switch to a different scene, the decTime function that is called by the timer gets called again and I get a "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSCFType setString:]: unrecognized selector sent to instance 0x533f0d0'" error.
   It comes up with different types calling the setString each time for some reason.

   I've read the threads on here about removeAllChildrenWithCleanup but I still have no idea what I'm doing. Pretty sure I am doing something completely wrong that is giving me so many problems

   Oh, and I edited the CocosNode.m file as posted in the other thread by Riq to fix the bug in 0.72 (which is the version I'm currently using)

   Thanks for any help :)

   Posted 2 years ago #
2. 

   shazbox
   Member

   UPDATE: oddly enough it is working now without me changing anything, but I have a feeling it will come back up so would still like some info on wtf I am screwing up lol

   UPDATE 2: I'm obviously a complete moron....noticed the 2 replaceScene function calls. So that kind of fixed the problem.

   And I think it is because I am transitioning from one scene to the same type of scene (just want to reset it basically). So it is bringing in the next one then calling exit on the original which is erasing the new one as well?

   Posted 2 years ago #

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