Routines
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44522: Handler: Upward Missile Flame
Keep the flame (types 130/131 or 134/135 via Handler_UpwardMissileFlame_HangLeft) attached to the missile held in the slot at Object_Slot_3. The flame is cleared if that slot no longer holds the missile.
Input
IX Actor slot
Hang this actor off the 128 slot at Object_Slot_3.
Handler_UpwardMissileFlame 44522 LD A,(24888) Fetch Object_Slot_3.
44525 CP 128 Jump to Handler_Missile_ClearType if the type is not 128.
44527 JR NZ,Handler_Missile_ClearType
44529 LD HL,(24890) Fetch Object_Slot_3_Position.
44532 LD BC,20 Add a 20 offset.
44535 ADD HL,BC
Place this actor at the missile's position, offset for the flame.
Handler_Missile_MaskWorldX 44536 LD A,H Fetch the high byte.
44537 AND %00011111 Keep only bits 0-4.
44539 LD H,A Write it back.
44540 LD (IX+2),L Write the low byte as the actor world X.
44543 LD (IX+3),H Write the high byte.
44546 LD A,(24892) Fetch Object_Slot_3_Y.
44549 ADD A,16 Add 16.
44551 LD (IX+4),A Write it as the actor Y.
Alternate the flame frame and colour.
44554 LD A,(IX+0) Fetch the actor type.
44557 XOR %00000001 Flip bit 0.
44559 LD (IX+0),A Write it back.
44562 LD A,(IX+7) Fetch the actor colour.
44565 XOR %00000100 Flip bit 2.
44567 LD (IX+7),A Write it back.
44570 JP DrawCurrentActor_Draw Jump to DrawCurrentActor_Draw.
The same hang, offset left, for type 132.
Handler_UpwardMissileFlame_HangLeft 44573 LD A,(24888) Fetch Object_Slot_3.
44576 CP 132 Jump to Handler_Missile_ClearType if the type is not 132.
44578 JR NZ,Handler_Missile_ClearType
44580 LD HL,(24890) Fetch Object_Slot_3_Position.
44583 LD BC,16 Set the offset in BC to 0016.
44586 AND A Clear the carry flag.
44587 SBC HL,BC Subtract the offset.
44589 JR Handler_Missile_MaskWorldX Jump to Handler_Missile_MaskWorldX.
Handler_Missile_ClearType 44591 CALL DrawCachedSprite Call DrawCachedSprite.
44594 LD (IX+0),0 Write 0 to the actor type.
44598 RET Return.
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