NewType for ANIM object

[earok]

I can't seem to find any information on what the NewType for the ANIM object is (eg, the one used in commands like "LoadAnim anim#,filename$[,palette#]").

Is this documented anywhere?



Edit:

I've done my best to reverse engineer it and I understand *most* of the format, there's just one thing I can't wrap my head around.

Basically the newtype seems to maintain a pointer to the current "delta" frame of data, and the first long word of the data is simply a pointer to the next delta frame, but the *second* long word is a value I can't decipher (all values after that are the actual compressed data from the ANIM5 file)



NewType .anim
_width.w ;Set to 0 after free anim
_height.w
_depth.w
_unknown1.w ;May contain flags for EHB, HAM etc? Shifting right by 3 seems to give compression type?
_frames.w
_body.l ;Pointer to the "body" of the anim
_bodySize.l ;Size of the "body" chunk
*_firstFrame.animDelta ;Pointer to the first delta frame of data (should equal body + body size + 8)
_firstFrameOffset.l ;Increase first delta frame by this + 8 to get next frame
*_currentFrame.animDelta ;Pointer to the current delta frame of data
_currentFrameOffset.l ;Increase current frame by this + 8 to get next frame
End NewType

NewType .animDelta
*_nextFrame.animDelta ;Pointer to the next delta frame. Presumably loops back to the first one?
unknown.l ;Unknown, doesn't seem to correlate to size, could be something to do with compression format
End Newtype

[Honitos]

Hi earok,

maybe it is for some help, I just disassembled the animlib and converted it to ab3-asm.
You can find the source here:

https://github.com/AmiBlitz/AmiBlitz...BS/animlib.ab3

[earok]

Thanks for that! I ended up switching to the RIAnimLib for what I was doing, but I'll take a deeper dive into animlib if I go back to the Blitz library.

[Honitos]

Ok for that!
I dissassembled the iffiolib and the ilbmifflib as well. Both libs are used by the animlib.