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AA89: A thing that homes in on the player (graphics 120 and 121)
Reached through UPDATES. Deadly both ways; every turn it steps one unit towards the player in U and in V (MOVE_TOWARDS_PLAYER), falls under gravity, flips between its two graphics, and makes its sound. Rooms $5E and $D8 have them (object template 29).
SLOW_CHASER AA89 CALL DRAW_AT_L12_D4 draw 12 left and 4 down
AA8C LD BC,$0101 one unit towards him in U and V
AA8F CALL MOVE_TOWARDS_PLAYER
AA92 CALL DEC_DZ_AND_UPDATE_UVZ fall, and move
AA95 CALL TOGGLE_FRAME the other graphic
AA98 LD HL,$B6AD its sound
AA9B CALL WARBLE_SOUND
AA9E JP DEADLY_AND_DRAW deadly both ways; redraw
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