Routines
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B099: Face Up
Used by the routine at UpdatePlayerDirection.
Used by UpdatePlayerDirection to set the direction of the sprite to up.
Input
A Sprite ID
IX Actor record of the player
FaceUp B099 AND %11110011 Keep only bits 0-1, 4-7.
B09B OR %00001000 Set bit 3.
B09D JR UpdatePlayerDirection_Store Jump to UpdatePlayerDirection_Store.
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