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104 lines
2.4 KiB
Racket
104 lines
2.4 KiB
Racket
#lang s-exp "txtadv.rkt"
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;; Verbs ----------------------------------------
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;; This declaration must be first:
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(define-verbs all-verbs
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[north (= n) "go north"]
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[south (= s) "go south"]
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[east (= e) "go east"]
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[west (= w) "go west"]
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[up (=) "go up"]
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[down (=) "go down"]
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[in (= enter) "enter"]
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[out (= leave) "leave"]
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[get _ (= grab take) "take"]
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[put _ (= drop leave) "drop"]
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[open _ (= unlock) "open"]
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[close _ (= lock) "close"]
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[knock _]
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[quit (= exit) "quit"]
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[look (= show) "look"]
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[inventory (=) "check inventory"]
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[help]
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[save]
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[load])
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;; Global actions ----------------------------------------
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;; This declaration must be second:
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(define-everywhere everywhere-actions
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([quit (begin (printf "Bye!\n") (exit))]
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[look (show-current-place)]
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[inventory (show-inventory)]
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[save (save-game)]
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[load (load-game)]
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[help (show-help)]))
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;; Objects ----------------------------------------
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(define-thing cactus
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[get "Ouch!"])
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(define-thing door
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[open (if (have-thing? key)
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(begin
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(set-thing-state! door 'open)
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"The door is now unlocked and open.")
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"The door is locked.")]
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[close (begin
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(set-thing-state! door #f)
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"The door is now closed.")]
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[knock "No one is home."])
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(define-thing key
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[get (if (have-thing? key)
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"You already have the key."
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(begin
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(take-thing! key)
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"You now have the key."))]
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[put (if (have-thing? key)
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(begin
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(drop-thing! key)
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"You have dropped the key.")
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"You don't have the key.")])
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(define-thing trophy
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[get (begin
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(take-thing! trophy)
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"You win!")])
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;; Places ----------------------------------------
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(define-place meadow
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"You're standing in a meadow. There is a house to the north."
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[]
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([north house-front]
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[south desert]))
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(define-place house-front
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"You are standing in front of a house."
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[door]
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([in (if (eq? (thing-state door) 'open)
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room
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"The door is not open.")]
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[south meadow]))
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(define-place desert
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"You're in a desert. There is nothing for miles around."
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[cactus key]
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([north meadow]
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[south desert]
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[east desert]
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[west desert]))
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(define-place room
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"You're in the house."
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[trophy]
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([out house-front]))
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;; Starting place ----------------------------------
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;; The module must end with the starting place name:
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desert
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