Routines
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55556: Handler: Room Sixteen
Used by the routine at Dispatch_Handlers.
Special actor for room 22.
Return unless this is room 22.
Handler_RoomSixteen 55556 LD A,(25762) Return if *CurrentRoom is not 22.
55559 CP 22
55561 RET NZ
Point at the special actor and set the clip window.
55562 LD IX,25677 Point IX at SpecialActor.
55566 LD BC,1309 Write 1309 to *ClipWindow_MinimumColumn.
55569 LD (25627),BC
Draw the actor if it is already active.
55573 BIT 7,(IX+0) Jump to Handler_RoomSixteen_Draw if the actor is already active.
55577 JR Z,Handler_RoomSixteen_Draw
Only spawn when the player is on a trigger row.
55579 LD A,(25765) Jump to Handler_RoomSixteen_Column if the player row is 7, 20 or 17, otherwise jump to Handler_RoomSixteen_Done.
55582 CP 7
55584 JR Z,Handler_RoomSixteen_Column
55586 CP 20
55588 JR Z,Handler_RoomSixteen_Column
55590 CP 17
55592 JP NZ,Handler_RoomSixteen_Done
Only spawn when the player is in the trigger columns.
Handler_RoomSixteen_Column 55595 LD A,(25764) Jump to Handler_RoomSixteen_Done unless the player column is 15-22.
55598 CP 23
55600 JP NC,Handler_RoomSixteen_Done
55603 CP 15
55605 JR C,Handler_RoomSixteen_Done
Spawn on a random roll.
55607 CALL JumpTable_GetRandomNumber Jump to Handler_RoomSixteen_Done if the random number is 220 or higher.
55610 CP 220
55612 JR NC,Handler_RoomSixteen_Done
sprite-e6
55614 LD A,230 Spawn the actor with sprite 230, colour WHITE (BRIGHT) and size 1 by 1.
55616 LD L,71
55618 LD DE,257
55621 CALL JumpTable_SpawnEntity
Choose left or right movement.
55624 CALL JumpTable_GetRandomNumber Jump to Handler_RoomSixteen_Right if the random number is 128 or higher.
55627 CP 128
55629 JR NC,Handler_RoomSixteen_Right
55631 LD (IX+0),30 Start at column 30 and write 251 as the horizontal delta.
55635 LD (IX+10),30
55639 LD (IX+8),251
55643 JR Handler_RoomSixteen_Sound Jump to Handler_RoomSixteen_Sound.
Start on the left and move right.
Handler_RoomSixteen_Right 55645 LD (IX+0),5 Start at column 5 and write 5 as the horizontal delta.
55649 LD (IX+10),5
55653 LD (IX+8),5
Sound the actor appearing.
Handler_RoomSixteen_Sound 55657 LD B,255 Call Play_Noise with mask 255 and 50 iterations.
55659 LD D,50
55661 CALL Play_Noise
Choose the actor row.
55664 LD A,(25765) Jump to Handler_RoomSixteen_RowLow if the player row is 20.
55667 CP 20
55669 JR Z,Handler_RoomSixteen_RowLow
55671 CP 17 Jump to Handler_RoomSixteen_RowHigh if the player row is 17.
55673 JR Z,Handler_RoomSixteen_RowHigh
55675 CALL JumpTable_GetRandomNumber Jump to Handler_RoomSixteen_RowHigh if the random number is 128 or higher.
55678 CP 128
55680 JR NC,Handler_RoomSixteen_RowHigh
Handler_RoomSixteen_RowLow 55682 LD (IX+1),19 Write row 19 into the actor.
55686 LD (IX+11),19
55690 JR Handler_RoomSixteen_Draw Jump to Handler_RoomSixteen_Draw.
Handler_RoomSixteen_RowHigh 55692 LD (IX+1),16 Write row 16 into the actor.
55696 LD (IX+11),16
Store, move, draw and erase the actor.
Handler_RoomSixteen_Draw 55700 CALL JumpTable_AdvanceEntity Call JumpTable_AdvanceEntity.
55703 CALL JumpTable_StorePosition Call JumpTable_StorePosition.
55706 CALL JumpTable_MoveEntity Call JumpTable_MoveEntity.
55709 CALL JumpTable_DrawEntity Call JumpTable_DrawEntity.
55712 CALL JumpTable_EraseEntity Call JumpTable_EraseEntity.
Hide the actor once it has left the room.
55715 LD A,(IX+0) Deactivate the actor once column 35 is passed.
55718 CP 35
55720 JR C,Handler_RoomSixteen_Done
55722 LD (IX+0),128
Restore the clip window.
Handler_RoomSixteen_Done 55726 LD BC,289 Write 289 to *ClipWindow_MinimumColumn.
55729 LD (25627),BC
55733 RET Return.
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