cocos2d for iPhone

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

1. 

   rolando
   Moderator

   I was thinking we can use the flexibility of Tiled and the XML format to add a few "official" extensions, specifically something that might come really handy: parallax support for some layers.

   The extensions should not be hard to add: just define a set of properties that layers/tiles can have.

   In order for parallax to work, TXMTiledMap should inherit from ParallaxNode instead of CocosNode... It should be pretty easy to do this (I'm willing to add some code).

   So... if you're ok with this, we need to define those properties. We could prefix them with 'cc' in order to not have any conflicts with other properties.

   For the layers, I'm thinking in the Parallax property. The parallax is a ratio, so we could define it as a string with the (scanf) format: "%f,%f", and it might be named "cc_parallax_ratio". In a more formal definition (we could add these properties in the wiki):

   • Layer
     • cc_parallax_ratio: String of the format "%f,%f". Example: "0.5,0.4" -> parallax ratio of 0.5 on the X axis and 0.4 on the Y axis
     • cc_position_offset: String of the format "%f,%f". Example: "0.5,0.4" -> position offset of 0.5 on the X axis and 0.4 on the Y axis

   If riq is ok I could add support for this.

   rolando.

   Posted 2 years ago #
2. 

   riq
   Key Master

   Hi rolando,

   I like the idea to have a good editor where you can build parallax, tiles, etc.
   But I'm not convinced that we should add this extension to TMX.

   You patch is better than not having the editor. But I prefer not to add it because I found it rather "hackish".

   I would prefer to wait until we have a more standard way to create parallax with any kind of node (including TMX layers).

   Posted 2 years ago #
3. 

   rolando
   Moderator

   I also agree with you.
   PS: I removed the post with the patch because it was not working correctly (-: I'll polish the functionality and post it here if anyone wants to use it anyway...

   Posted 2 years ago #
4. 

   rolando
   Moderator

   btw: do you have another idea on how the parallax should work?

   Posted 2 years ago #
5. 

   riq
   Key Master

   You mean the editor ?

   Ideally, it should work like this:

   - cocos2d iphone should work on Mac too
   - and then code an editor (using cocos2d) for Mac
   - this editor should let you place, move, edit any cocos node (sprite, parallax, etc)
   - you can test you nodes there (since the editor is coded in cocos2d testing nodes should be relatively easy)
   - export your world

   and you import the world in cocos2d-iphone

   Posted 2 years ago #
6. 

   rolando
   Moderator

   I was thinking in something like that also. Making Cocos2D (objc) work on mac should not be that hard: the only thing that should be ported is the TouchDispatcher and a few changes in the Director (I think)...

   I'll give it a try during next week.

   rolando.

   Posted 2 years ago #
7. 

   rolando
   Moderator

   oh, and also the OpenGL-ES specific bits :-P

   Posted 2 years ago #
8. 

   rolando
   Moderator

   After a quick-quick try, I realized that for Cocos2D to work on macos, the prefix for classes should be implemented (due to lack of namespaces in Obj-C).

   I already found a conflict: MoveTo, it's a legacy carbon function and XCode complains about symbol redefinition.

   I think that all Cocos2D classes should be prefixed with CC:

   • CCNode
   • CCDirector
   • CC...

   Or maybe CC2D... That's a mayor refactoring though, and maybe it should be scheduled for 0.9 or maybe 1.0. What do you think, riq?

   rolando.

   Posted 2 years ago #
9. 

   riq
   Key Master

   yes, the CC namespace refactoring is scheduled for v0.9.

   feel free to create a branch to do the tests. what's your google user ?

   Posted 2 years ago #
10. 

    rolando
    Moderator

    it's funkaster@gmail.com

    rolando.

    Posted 2 years ago #
11. 

    riq
    Key Master

    you have commit svn permissions now. feel free to create a "cocos2d-mac" branch.

    Posted 2 years ago #
12. 

    riq
    Key Master

    I mean branch, not port.

    Posted 2 years ago #
13. 

    JohnnyFlash
    Member

    Just some extra information from my SNES days. We used a tool similar to tiled to create our platform games. However, the parallax layers were they're own "map" with they're own dimensions. This allowed you to build a 2 screen wide scrolling parallax that looped without having to worry about size of the game play area.

    I really hope we can get a lot of the functionality from those days into cocos2d. I look forward to helping out.

    Posted 2 years ago #

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