Knight Lore: Routine at B973

B973: Point at the player: Y

Used by the routine at move_towards_plyr.

Input
A	the step along X

towards_plyr_y

B973

LD (IX+$09),A

dX; own Y

B976

LD A,(IX+$02)

B979

SUB (HL)

minus the player's Y: B if the player is further along Y, else -B

B97A

INC HL

B97B

LD A,B

B97C

JP M,towards_plyr_set_dy

B97F

NEG