In SACT2, if two sprites have the same Z value, they are rendered in
increasing order of their sprite numbers. This behavior is documented in
the SDK manual.
However, in later versions of the sprite engine (SACTDX,
StoatSpriteEngine, ChipmunkSpriteEngine), sprites are drawn in the order
they were created.
This fixes an issue in Rance Quest Magnum which relies on this behavior.
kichikuou
1dd10ecc45