cocos2d for iPhone

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

1. 

   ob1
   Member

   Can someone please explain me how to use "OnEnter" (or if I am even supposed to subclass it).

   I am using 0.7.3 and I overrode "OnEnter" for a Scene. OnEnter is called twice when the scene starts, and once when it exits.

   Looks very odd to me (and causes bugs). Any one has an explanation ?

   Posted 2 years ago #
2. 

   ob1
   Member

   Okay, I think I found the problem. Subclassing OnEnter is a very bad idea.

   Is there a function similar to AnimationDidFinish or ViewDidLoad that can be subclassed ?

   Posted 2 years ago #
3. 

   riq
   Key Master

   onEnter and onExit are should be called once, otherwise it's a bug.
   in v0.8 it should work ok.
   in v0.7 it should work ok if you are not using transitions.
   if you are using transitions (it's known bug already fixed in v0.8) then onEnter and onExit will be called twice.

   Posted 2 years ago #
4. 

   ob1
   Member

   OK thanks, that the problem then. (I am using 0.7.3 with transitions). I looked on the issues list and didn't find it. Sorry.

   Is there anything telling that transitions have finished. Would it be possible to add a delegate ? (like it could be a [delegate transistionFinished] in -(void) finish.

   Posted 2 years ago #
5. 

   riq
   Key Master

   yes, in v0.8 you have a new callback.

   This doc explains more or less how to use it:
   http://www.cocos2d-iphone.org/wiki/doku.php/release_8_0

   search for onEnterTransitionDidFinish

   Posted 2 years ago #
6. 

   ob1
   Member

   Cool, sounds perfect.

   Unfortunately it's far too late to port my code to 0.8. That will be for my next game.

   Posted 2 years ago #
7. 

   vutronic
   Member

   Its not that hard to upgrade cocos2d 0.7.3 in your game to version 8.

   Posted 2 years ago #
8. 

   ob1
   Member

   Well, unless your game is almost done and you sprinkled your 0.7.3 with fixes, enhancements and workarounds left and right.

   Posted 2 years ago #
9. 

   mickeyl
   Member

   Sorry for reviving this old thread, but I feel my question matches here. I would like to animate my characters in a special way when they enter the scene, but also before they leave the scene. onExit() is too late though, the transition will already be done by then. Wouldn't it be feasible to have something like onExitTransitionWillStart() as a counterpart to onEnterTransitionDidFinish? Or how do you solve these things?

   Posted 1 year ago #

RSS feed for this topic

Reply

You must log in to post.