Routines
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64717: Action: Unlock
Action_Unlock 64717 CALL Parser_ValidateDirectObject Call Parser_ValidateDirectObject.
64720 RET C Return if the direct object is malformed.
Was the player trying to unlock the door?
64721 LD HL,60134 Call MatchPhraseTokens with PhraseTokens_Door_2.
64724 CALL MatchPhraseTokens
64727 JR NZ,Unlock_Invalid Jump to Unlock_Invalid if the token isn't for the door.
The player was trying to unlock the door, but is the door even in the current room?
64729 LD A,(48331) Jump to Response_YouCant_Duplicate if *CurrentRoom is room 106: " The Mighty Rock Door".
64732 CP 106
64734 JP Z,Response_YouCant_Duplicate
It's the correct door, but is it already unlocked?
64737 LD A,46 Call ValidateItemPresent with "A closed door".
64739 CALL ValidateItemPresent
64742 JP NZ,Response_YouveDoneThatAlready Jump to Response_YouveDoneThatAlready if "A closed door" isn't in the current room.
And does the player have the key?
64745 LD A,31 Call CheckObjectInInventory with item 31: "A key".
64747 CALL CheckObjectInInventory
64750 JR Z,Unlock_Door Jump to Unlock_Door if the key is either in the room, or in the players inventory.
Print "You haven't got the key.".
64752 LD HL,58884 HL=Messaging_YouHaventGotTheKey.
64755 JP PrintStringAndNewline_Alias Jump to PrintStringAndNewline_Alias.
Change the door state!
Unlock_Door 64758 LD BC,11821 Call TransformItem to transform item 46 ("A closed door") into item 45 ("A closed door").
64761 CALL TransformItem
64764 JP Response_OK_Duplicate Jump to Response_OK_Duplicate.
Nothing else is valid.
Unlock_Invalid 64767 JP Response_YouCant_Duplicate Jump to Response_YouCant_Duplicate.
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