[Feature] Dynamic sprite sizes!

[DJMaxus]

Whenever I try to compile this feature with a fresh copy of MS4 (3.77), I get the "Sub or Function not defined" Compile error.

"DDSD_Sprite" is the resulting text that is highlighted. I can't seem to figure this out, I'm sure someone else has?

Edit : Wow, I can't believe I waited this long to post something.