Routines
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8640: Draw Cached Sprite
Clear the scratch counts, load the actor's cached sprite with LoadSpriteScratch and start the draw through XORSpriteLoop.
Input
IX Actor slot
Before DrawCachedSprite After DrawCachedSprite
cached-drawn cached-erased
The cached image of the sprite is XORed off the screen, so the pixels of the sprite disappear.
DrawCachedSprite 8640 XOR A Write 00 to SpriteRowsLeft, SpriteHeight and the row counter.
8641 LD ($5E59),A
8644 LD ($5E58),A
8647 LD C,A
8648 EXX Switch to the shadow registers.
8649 CALL LoadSpriteScratch Call LoadSpriteScratch.
864C JP XORSpriteLoop Jump to XORSpriteLoop.
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