cocos2d for iPhone

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

1. 

   Karl
   Member

   I'm noticing that when I do background cutouts to run at higher priority, it results in seams around the cutout portions.

   Basically, I'm taking an image that I'm using for the background, copying a portion of it into a new image, and then applying a second sprite consisting of that copied portion over the exact same spot, but at a higher priority so that game sprites will pass in behind of it.

   Unfortunately, everywhere I do this there is a black seam that shows up along the lines I cut for the higher priority parts. Some areas are more noticeable than others...

   Is there a way to prevent this from happening?

   Posted 2 years ago #
2. 

   MikeSz
   Member

   any chance it is related to this ?
   http://www.cocos2d-iphone.org/forum/topic/2615

   Posted 2 years ago #
3. 

   Karl
   Member

   Hmm interesting... I was about to make a quick example but when I finally ran it on a real iphone to get screenshots, it worked fine.

   Basically, make a pure white png the size of the iphone screen, save it, then cut some holes out so that they are transparent and save it again under a different name.
   Now make a fresh cocos2d project, and in the init, load the two images into a scene, first the full white one and then the one with holes cut in it. It will have seams all over the place on the simulator regardless of 2D projection, anchor point, origin, or whether you use AtlasSprites or regular sprites.

   However, running the same code on a real device shows no seams whatsoever no matter how you do it.

   Oh well. As long as the real device works I'm happy :-)

   Posted 2 years ago #

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