Routines
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A54A: Bounce Nastie Vertically
Used by the routine at HandlerChasingNastie.
Reverses the Y velocity of a chasing nastie which has hit the top or bottom of the screen.
Input
IX Nastie record
BounceNastieVertically A54A CALL ReverseYVelocity Reverse the Y velocity of the nastie.
A54D JR HandlerChasingNastie_Move Jump to HandlerChasingNastie_Move.
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