Routines
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34383: Clear Sprite Scratch
Zero SpriteRowsLeft and SpriteHeight, then XOR the actor's cached sprite onto the screen again (erasing it) through WriteSpriteRow.
Input
IX Actor slot
Before ClearSpriteScratch After ClearSpriteScratch
scratch-drawn scratch-erased
The cached image of the sprite is XORed off the screen, so the pixels of the sprite disappear.
ClearSpriteScratch 34383 XOR A Write 0 to
34384 LD (24153),A
34387 LD (24152),A
34390 LD C,A Clear the row counter and switch register sets.
34391 EXX
34392 CALL LoadSpritePointers Call LoadSpritePointers.
34395 JP WriteSpriteRow Jump to WriteSpriteRow.
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