Sparrow Forum

1. 

   stahlmanDesign
   Member

   I recently discovered Sparrow after having worked with Cocos2D for about 6-8 months. I already like Sparrow more after playing with the demo for only about an hour. I come from ActionScript so everything seems more familiar.

   I would like to see support for Tiled, and a little bit better support for sprite sheets (when I use cropped sprites in TexturePacker or presumably also in Zwoptex, Sparrow scales the images so they all fit into one rectangular shape).

   I just want to offer my support and encourage this framework's development. I really like the level of documentation and the examples. This can make or break a framework because people have to figure out how to use it without too much trouble.

   Posted 1 year ago #
2. 

   pixelrevision
   Member

   If you like flash and want to pack up textures then I have a tool that you can use to generate a sprite sheet with and include things like frame labels and named clips.
   http://pixelrevision.com/8bit/texture_atlas_creator/

   I am assuming when you talk about scaling you are referring to using power of 2 textures, which is kinda needed for opengles. Just make your sprite sheet work at a power of 2 size and you'll be fine.

   As far as tile maps are concerned there really are multiple approaches for this, and I have been working to try to optimize for very large maps. So far compiled sprite has been the fastest to render approach.

   Here is a tutorial with one approach:
   http://wiki.sparrow-framework.org/tutorials/tilemaps_with_compiled_sprites

   And you could use the base class to draw on a render texture, or use CoreCraphics or what not.

   Right now the mapdata uses a simple csv file and a tile strip much like flixel does. I know Shilo has been working on one that will work with maps out of tiled, so you may want to see how far along he has gotten with that.

   Posted 1 year ago #
3. 

   stahlmanDesign
   Member

   What I meant about cropped sprites is this:

   This gets stretched in Sparrow because the images have different widths (the skinny ones get stretched wide)
   http://dl.dropbox.com/u/7630200/programming/eaCropped.png

   This is what I have export for it to work correctly in Sparrow, but it is not as efficient, obviously:
   http://dl.dropbox.com/u/7630200/programming/eaNotCropped.png

   And here's the result of using the more compact sprite sheet in Sparrow (4 separate screen shots)
   http://dl.dropbox.com/u/7630200/programming/stretching.png

   Posted 1 year ago #
4. 

   Mik
   Member

   I bet that feature will be soon implemented by the author.

   Nice work your design, i gave a look at your site and i'm impressed!

   Posted 1 year ago #
5. 

   baike
   Moderator

   Do you mean for an SPMovieClip?

   If so, the reason is that SPMovieClip subclasses SPImage and a new frame is set by setting the image's texture to the texture that matches that frame index. But the image's texture coordinates are based on that of the first frame.

   You may be able to subclass SPMovieClip and rectify this, or you can instead pre-process your texture frames by rendering them to SPRenderTextures that all have the same dimensions. You can force the dimensions by rendering an SPQuad with 0 alpha underneath the frame's texture and then center the texture within the bounds. I know that's not ideal, but it doesn't take as much time as it sounds. Loading the initial atlas from flash is the long part.

   I've only ever used frames with equal dimensions, so I could be off on this one, but that is what it sounds like you are describing.

   Posted 1 year ago #
6. 

   pixelrevision
   Member

   If what Baike is saying the case you could prolly extend movie clip and in the updateCurrentFrame method set the width and height to the texture's width and height.

   Posted 1 year ago #
7. 

   Daniel
   Primary Feather

   Hello Justin,

   welcome to the Sparrow forum, and thanks for the nice words! =)

   You're in luck: I'm currently working on support for cropped textures; you can expect that feature within the next few days! I'll report back in the forum once it's finished. You'll be able to grab it from the development branch of the github repository, then.

   Thanks for choosing Sparrow, and good luck with your projects! See you at the forum

   Posted 1 year ago #
8. 

   Shilo
   Master Sparrow

   Hello,
   It's nice to have another great addition to this community!

   Posted 1 year ago #
9. 

   Daniel
   Primary Feather

   Justin, I completely forgot to report back on the trimmed textures! The development tree of Sparrow contains support for them (since a few weeks), and yesterday I added support for "pvr.gz" (gzip-compressed pvr textures). The most important features of "Texture Packer" are thus now supported by Sparrow.

   Thanks also to Andreas Löw, the Author of Texture Packer, for his support!

   Posted 1 year ago #
10. 

    andreas.loew
    Member

    @Daniel: Gern geschehen

    [=> German for: "You are welcome."]

    Posted 1 year ago #

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