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BED6: Is the object moving?
Used by the routines at REMOTE_ROBOT, LOOSE_VALVE, PUSHABLE and EXTRA_LIFE.
As Knight Lore's is_obj_moving.
Input
IX the object
Output
F Z set if its steps in U, V and Z (+$09 to +$0B) are all zero
IS_OBJ_MOVING BED6 LD A,(IX+$09)
BED9 OR (IX+$0A)
BEDC OR (IX+$0B)
BEDF RET
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