Routines
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D639: Script Routine: (3A) Collectible action
Send the collectible out of the room downward.
Input
IX Address of complex state data for an entity
ScriptRoutine_CollectibleLeaveRoomDown D639 LD A,(IX+$04) Load A with the current entity's room index.
D63C CP $01 Is the current entity's room index equal to 01? If so, jump to ScriptRoutine_CollectibleLeaveRoomDown_SetDirBit3Script.
D63E JR Z,ScriptRoutine_CollectibleLeaveRoomDown_SetDirBit3Script
D640 CALL Adjust_CameraX Call Adjust_CameraX to adjust the camera X coordinate.
D643 JR C,ScriptRoutine_CollectibleLeaveRoomDown_DecYAndRoom Jump to ScriptRoutine_CollectibleLeaveRoomDown_DecYAndRoom if the result underflowed.
Blocked leaving downward: set direction bit 03 and run the stop script at D3D6.
ScriptRoutine_CollectibleLeaveRoomDown_SetDirBit3Script D645 SET 3,(IX+$09) Set bit 03 of the current entity's direction / state.
D649 LD HL,$D3D6 Point HL at the dialogue/message table (D3D6).
D64C JP ScriptInstruction Jump to ScriptInstruction to execute the script instruction at HL.
Leave downward: move up one character and back one room.
ScriptRoutine_CollectibleLeaveRoomDown_DecYAndRoom D64F DEC (IX+$05) Move this entity one character up.
D652 DEC (IX+$06)
D655 DEC (IX+$04) Move this entity back one room.
D658 JP AdvanceScriptInstruction Jump to AdvanceScriptInstruction to run the next script instruction.
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