cocos2d for iPhone

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

1. 

   deeb
   Member

   Hi, I've gotten a little stuck with this.

   So far I've defined two animated sprites in external classes and linked and used them like this:

   In my game scenes header:
   
#import "Sprite.h"

   ....

   @interface GameLayer : Layer
   {
   Sprite *sprite;
   }

   @property (nonatomic, retain) Sprite *sprite;

   @end


   And added in the .m
   
Sprite *temp = [[Sprite alloc] init];
self.sprite = temp;
[temp release];
[self add:sprite];


   I've added two sprites like this, but on adding my third one it tells me there are conflicting values for temp. What's happening?

   Posted 2 years ago #
2. 

   Clain
   Member

   If you use the name temp again in the same function, then you shouldn't declare it again.
   First time :
   

   Sprite *temp = [[Sprite alloc] init];
   self.sprite1 = temp;
   [temp release];

   Second time :
   

   temp = [[Sprite alloc] init];
   self.sprite2 = temp;
   [temp release];

   You can also check if you have two temp variables of different types in the same scope.

   If it doesn't solve your problem, post more code.

   Posted 2 years ago #
3. 

   jd
   Member

   When you set self.sprite = temp, you are not taking a copy of temp, you are getting the pointer to temp. So, when you release temp, sprite points to a bad memory address. What are you trying to do exactly?

   Posted 2 years ago #
4. 

   Clain
   Member

   Sorry jd but you're wrong. Since the ivar sprite is defined as a property with the retain attribute, when you do self.sprite = temp;, temp is retained by sprite. Releasing the temp variable is the right thing to do because it was alloc'd init'd before.

   Posted 2 years ago #
5. 

   deeb
   Member

   Forgot to mention, each Sprite is a different class, so I think temp is getting pissed now because I've assigned it to be two different things. The reason this worked before was that I added my second sprite in a different method.

   Posted 2 years ago #
6. 

   deeb
   Member

   I have it working now, albeit: Really damn fugly. I've redefined the temp in a method for adding each object. It didn't work to try to store different types of stuff in the same temp, so until I see something more eloquent I'm sticking with the fugly.

   Posted 2 years ago #

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