Spriter Scheme

[netguy204]

I wrote a SCML parser / playback tool as part of a Scheme game-engine I'm working on. The SCML code is nicely abstracted from the rest of the engine so it should be very easy to port.

You can see a video of it here: http://youtu.be/QH6uS8z6zrg

Here's the code:

https://github.com/netguy204/gambit-game-lib/blob/master/spriter.scm

It implements the final SCML spec (post beta) as described here: http://www.brashmonkeygames.com/spriter/8-17-2012/GettingStartedWithSCMLGuide(a2).pdf

To load an animation:

(define +scml+ (scml-load "monster/Example.SCML"))
(define +idle+ (animation (entity +scml+ "0") "Idle"))

The length of the animation (in seconds) is:

(animation-length +idle+)

To interpolate the animation to any time between 0 and its animation-length:

(interp-anim anim time)

This returns a list of tkey objects which contain the interpolated rotations, positions, and centers for all of the sprite fragments presented in the order they should be drawn.

Here's an example of it being used: https://github.com/netguy204/gambit-game-lib/blob/46c8723ebf7663fe0ba04fc0853d1337515787e7/scmlib.scm#L76

Hopefully this saves someone some time!

[Mike at BrashMonkey]

Awesome job netguy204!