Ant Attack: Routine at 8AB6

8AB6: Walk the rescued person after the player

Used by the routine at MOVE_RESCUEE. Walks towards the player while two to five cells away, and stops beside them or more than five away. The facing is kept if one more step along it would still end beside the player; otherwise they turn towards the player.
FOLLOW_PLAYER	8AB6	LD A,(IX+$06)	Not while stunned.
	8AB9	AND A
	8ABA	RET NZ
	8ABB	LD E,(IY+$00)
	8ABE	LD D,(IY+$01)
	8AC1	LD L,(IX+$00)
	8AC4	LD H,(IX+$01)
	8AC7	LD C,(IX+$04)
	8ACA	CALL DISTANCE
	8ACD	SET 2,(IX+$07)	Walking, unless...
	8AD1	CP $06	...six or more away, or beside the player.
	8AD3	JR NC,FOLLOW_PLAYER_2
	8AD5	CP $01
	8AD7	JR Z,FOLLOW_PLAYER_2
	8AD9	AND A	In the player's own cell.
	8ADA	JR NZ,FOLLOW_PLAYER_0
	8ADC	CALL ON_TOP
FOLLOW_PLAYER_0	8ADF	LD A,C	Would a step this way end beside the player?
	8AE0	CALL STEP
	8AE3	CALL DISTANCE
	8AE6	DEC A
	8AE7	JR Z,FOLLOW_PLAYER_1
	8AE9	LD L,(IX+$00)	No: face the player.
	8AEC	LD H,(IX+$01)
	8AEF	CALL DIRECTION_TO
	8AF2	LD C,A
FOLLOW_PLAYER_1	8AF3	LD (IX+$04),C
	8AF6	RET
FOLLOW_PLAYER_2	8AF7	RES 2,(IX+$07)
	8AFB	RET