Through the Trap Door: Routine at 36887

36887: Execute script data for Boni's kidnap and handle Trap Door opening and closing

Used by the routine at 36791.
36887	LD IX,43619	Load IX with address of complex state data for flying skeleton creature
36891	LD A,(43628)	If Berk-and-Drutt-through-Trap-Door flag is set...
36894	BIT 3,A	...
36896	RET NZ	...then return
36897	BIT 2,A	If Trap-Door-opened flag is set...
36899	JR NZ,36966	...then jump to 36966 (close the Trap Door if Berk is not in room 1 and Drutt is in room 4)
36901	BIT 1,A	If creature's inactive flag is set...
36903	JR NZ,36921	...then jump to 36921 (open the Trap Door if Berk is near the left side of the Trap Door room)
36905	LD HL,(36801)	Load current position in script data for Boni's kidnap from 36801 into HL...
36908	LD (34277),HL	...and store at 34277 as position in script currently running
36911	CALL 36947	Advance HL to next script instruction and start executing
36914	LD HL,(34277)	Store address (current position in script data) stored at 34277...
36917	LD (36801),HL	...at 36801 as current position in script data for Boni's kidnap
36920	RET	Return