Warlord: Routine at EF86

EF86: Process: Get Ladder


The player wants to pick up the ladder, check which version of it is in the current room.
Process_GetLadder	EF86	LD HL,$E3C5	Call CheckItemGroupPresent with Data_ItemGroup_Ladder.
	EF89	CALL CheckItemGroupPresent	Call CheckItemGroupPresent with Data_ItemGroup_Ladder.
Just pick up the item if it's "A ladder".
	EF8C	CP $5A	Jump to Handler_CheckPlayerInventory_PickUpItem if the ladder state in the current room is "A ladder".
	EF8E	JP Z,Handler_CheckPlayerInventory_PickUpItem
Print "You can't." if "A ladder,leading upward" is not present in the current room.
	EF91	CP $5E	Jump to Response_YouCant_Duplicate if the ladder state in the current room is not "A ladder,leading upward".
	EF93	JP NZ,Response_YouCant_Duplicate
The player wants to pick up the ladder, check if there are any issues with allowing this (if the inventory is full, or the player is already carrying it).
	EF96	LD A,$5A	Call Check_PlayerInventory with item 5A: "A ladder".
	EF98	CALL Check_PlayerInventory	Call Check_PlayerInventory with item 5A: "A ladder".
	EF9B	LD A,$5E	Call Handler_DestroyItemEvent with item 5E: "A ladder,leading upward".
	EF9D	CALL Handler_DestroyItemEvent
No ladder no access ... so update the room exits.
	EFA0	XOR A	Write 00 to *E959 to close downward access in Inside The Inner Wall Entrance.
	EFA1	LD ($E959),A
	EFA4	LD ($E96A),A	Write 00 to *E96A to close upward access in The Inner Courtyard.
	EFA7	LD B,$5A	Jump to Handler_PickUpItem with item 5A: "A ladder".
	EFA9	JP Handler_PickUpItem	Jump to Handler_PickUpItem with item 5A: "A ladder".