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- ;;; Mudsync --- Live hackable MUD
- ;;; Copyright © 2016 Christine Lemmer-Webber <cwebber@dustycloud.org>
- ;;;
- ;;; This file is part of Mudsync.
- ;;;
- ;;; Mudsync is free software; you can redistribute it and/or modify it
- ;;; under the terms of the GNU General Public License as published by
- ;;; the Free Software Foundation; either version 3 of the License, or
- ;;; (at your option) any later version.
- ;;;
- ;;; Mudsync is distributed in the hope that it will be useful, but
- ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
- ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- ;;; General Public License for more details.
- ;;;
- ;;; You should have received a copy of the GNU General Public License
- ;;; along with Mudsync. If not, see <http://www.gnu.org/licenses/>.
- ;;; Containers
- ;;; ==========
- ;;;
- ;;; While all gameobjs are containers, some gameobjs are more
- ;;; containers than others.
- (define-module (mudsync container)
- #:use-module (8sync)
- #:use-module (oop goops)
- #:use-module (mudsync gameobj)
- #:use-module (mudsync utils)
- #:use-module (ice-9 control)
- #:export (<container>
- cmd-take-from cmd-put-in))
- (define-actor <container> (<gameobj>)
- ((cmd-take-from cmd-take-from)
- (cmd-put-in cmd-put-in))
- ;; Can be a boolean or a procedure accepting
- ;; (gameobj whos-acting take-what)
- (take-from-me? #:init-value #t
- #:init-keyword #:take-from-me?)
- ;; Can be a boolean or a procedure accepting
- ;; (gameobj whos-acting put-what)
- (put-in-me? #:init-value #t
- #:init-keyword #:put-in-me?))
- ;; @@: Moving this to a container subclass/mixin could allow a lot more
- ;; customization of take out / put in phrases
- (define* (cmd-take-from gameobj message
- #:key direct-obj indir-obj preposition
- (player (message-from message)))
- (define player-name
- (mbody-val (<-wait player 'get-name)))
- (define player-loc
- (mbody-val (<-wait player 'get-loc)))
- (define our-name (slot-ref gameobj 'name))
- ;; We need to check if we even have such a thing
- (define this-thing
- (call/ec
- (lambda (return)
- (for-each (lambda (occupant)
- (define goes-by (mbody-val (<-wait occupant 'goes-by)))
- (when (ci-member direct-obj goes-by)
- (return occupant)))
- (gameobj-occupants gameobj))
- ;; nothing found
- #f)))
- (define (this-thing-name)
- (mbody-val (<-wait this-thing 'get-name)))
- (define (should-take-from-me)
- (and this-thing
- (slot-ref-maybe-runcheck gameobj 'take-from-me? player this-thing)))
- (define (default-objection)
- `("Unfortunately, it doesn't seem like you can take "
- ,(this-thing-name) " " ,preposition " " ,our-name "."))
- (define (this-thing-objection)
- (mbody-receive (_ taken-ok? #:key why-not) ; does the object object to being removed?
- (<-wait this-thing 'ok-to-be-taken-from? player) ; @@ no need to supply from where
- (and (not taken-ok?)
- ;; Either give the specified reason, or give a boilerplate one
- (or why-not
- (default-objection)))))
- (cond
- ;; Unfortunately this does leak information about what is contained
- ;; by us. Maybe not what's wanted in all circumstances.
- ((not this-thing)
- (<- player 'tell
- #:text `("You don't see any such " ,direct-obj " to take "
- ,preposition " " ,our-name ".")))
- ;; A particular objection to taking this thing.
- ;; We should allow customizing the reason here, which could be
- ;; provided by the 'ok-to-be-taken-from? slot.
- ((not (should-take-from-me))
- (<- player 'tell
- #:text (default-objection)))
- ;; the thing we wsant to take itself has objected...
- ((this-thing-objection) =>
- (lambda (objection)
- (<- player 'tell
- #:text objection)))
- ;; looks like we can take it
- (else
- ;; Wait to announce to the player just in case settting the location
- ;; errors out or something. Maybe it's overthinking things, I dunno.
- (<-wait this-thing 'set-loc! #:loc player)
- (<- player 'tell
- #:text `("You take " ,(this-thing-name) " from "
- ,our-name "."))
- (<- player-loc 'tell-room
- #:text `(,player-name " takes " ,(this-thing-name) " from "
- ,our-name ".")
- #:exclude player))))
- (define* (cmd-put-in gameobj message
- #:key direct-obj indir-obj preposition
- (player (message-from message)))
- (define player-name
- (mbody-val (<-wait player 'get-name)))
- (define player-loc
- (mbody-val (<-wait player 'get-loc)))
- (define our-name (slot-ref gameobj 'name))
- ;; We need to check if we even have such a thing
- (define this-thing
- (call/ec
- (lambda (return)
- (for-each (lambda (occupant)
- (define goes-by (mbody-val (<-wait occupant 'goes-by)))
- (when (ci-member direct-obj goes-by)
- (return occupant)))
- (mbody-val (<-wait player 'get-occupants)))
- ;; nothing found
- #f)))
- (define (this-thing-name)
- (mbody-val (<-wait this-thing 'get-name)))
- (define (should-put-in-me)
- (and this-thing
- (slot-ref-maybe-runcheck gameobj 'put-in-me? player this-thing)))
- (define (default-objection)
- `("As much as you'd like to, it doesn't seem like you can put "
- ,(this-thing-name) " " ,preposition " " ,our-name "."))
- (define (this-thing-objection)
- (mbody-receive (_ put-in-ok? #:key why-not) ; does the object object to being moved?
- (<-wait this-thing 'ok-to-be-put-in? player (actor-id gameobj))
- (and (not put-in-ok?)
- ;; Either give the specified reason, or give a boilerplate one
- (or why-not (default-objection)))))
- (cond
- ;; Is it not there, or maybe we won't allow it to be taken?
- ((not this-thing)
- (<- player 'tell
- #:text `("You don't seem to have any such " ,direct-obj " to put "
- ,preposition " " ,our-name ".")))
- ((or (not (should-put-in-me)))
- (<- player 'tell
- #:text (default-objection)))
- ;; the thing we wsant to take itself has objected...
- ((this-thing-objection) =>
- (lambda (objection)
- (<- player 'tell
- #:text objection)))
- ;; looks like we can take it
- (else
- ;; Wait to announce to the player just in case settting the location
- ;; errors out or something. Maybe it's overthinking things, I dunno.
- (<-wait this-thing 'set-loc! #:loc (actor-id gameobj))
- (<- player 'tell
- #:text `("You put " ,(this-thing-name) " " ,preposition " "
- ,our-name "."))
- (<- player-loc 'tell-room
- #:text `(,player-name " puts " ,(this-thing-name) " " ,preposition " "
- ,our-name ".")
- #:exclude player))))
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