cocos2d for iPhone

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

1. 

   gargantuan
   Member

   TMXTiledMaps don't really meet my needs, so I'm writing my own SVG parser to build levels. Primarily it converts polygons, circles and rects into chipmunk shapes.

   However, I don't really know how to approach creating the graphics. For example, if I have a large polygon than spans a couple of screen lengths, what would be a good approach to "filling" the shape?

   The first approach that sprung to mind was to simply trace over the SVG level in photoshop, slice it up into PNG files and lay it over the top. But that doesn't sound particularly efficient to me and I'm guessing there's a lot of optimisation issues with this technique.

   Does anyone have any advice on how to approach this, or tips and techniques I could investigate further.

   thanks
   -t

   Posted 1 year ago #
2. 

   asinesio
   Member

   @gargantuan -- I have the exact same problem; I commented on it in this thread.

   The way I'm trying to approach it is basically:

   1) Parse the "d" attribute of the SVG path to get the polygon vertices.
   2) Create a new class, called Surface, that holds the vertices.
   3) Iterate through the vertices using SpaceManager to create a Segment shape with static mass and cpShapeNode for each line segment. This way, we can avoid the convex polygon requirement since it's just a bunch of static segments.
   4) The Surface object inherits from CCNode. Since it has an array of vertices, we should be able to:

   • Split the polygon into triangles to avoid the OpenGL concave/convex requirement.
   • Render a texture on these triangles using GL_REPEAT texture coordinates

   So, that's my approach, but i'm having lots of trouble with actually getting the texture to look right.

   I think your idea of creating level backgrounds by tracing over them in Photoshop is not entirely crazy and I might go that route eventually. However, my levels are so huge that I'll have to implement a dynamic load/unload background texture so that I don't run out of memory.

   Did you come up with any better suggestions here?

   Posted 1 year ago #
3. 

   salmansqadeer
   Member

   Can anyone of you guys share your SVG parser with the community? Im trying to write my own but I kinda dont know where to start...

   Posted 1 year ago #

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