cocos2d for iPhone

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

1. 

   mattiasmak
   Member

   Hi everyone! After looking for answers it seems this could be a topic already answered.

   Does cocos2d offer any possibility to alpha mask a layer/node/sprite? This can be done so easily with flash so I'm amazed if this isn't supported in cocos2d. If it's not there must be a good reason for it I guess since it's such a important function in a 2d framework.

   Can someone with more cocos2d experience than me explain for me what the possibilites are? (The solution with glscissors isn't what i'm looking for).

   If it's not been done, but is possible. Are there any one interested in doing some consulting for our company?

   Posted 1 year ago #
2. 

   marco2D
   Member

   This is a very useful question, i add myself at the request.

   Posted 1 year ago #
3. 

   araker
   Moderator

   This example shows how to use a render texture in combination with masking. Alternatively you could use the masking code and put it in a draw method of a subclassed sprite.

   Posted 1 year ago #
4. 

   marco2D
   Member

   exactly i've not understood how to define the mask area where to remove the pixel.
   for example if i have the border for loading bar int oa sprite and i want to mask the loading bar by percent of loading status, how can i do?
   I just need to understand how to say this is the shape you have to use as mask!

   Thanks

   Posted 1 year ago #
5. 

   araker
   Moderator

   @marco2D, in your case it is probably easier to use glScissor, or change the textureRect of your sprite.

   Posted 1 year ago #
6. 

   infrid
   Member

   also check this out:
   http://www.cocos2d-iphone.org/forum/topic/1306

   Posted 1 year ago #

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