1 ;;; Mudsync --- Live hackable MUD
2 ;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
4 ;;; This file is part of Mudsync.
6 ;;; Mudsync is free software; you can redistribute it and/or modify it
7 ;;; under the terms of the GNU General Public License as published by
8 ;;; the Free Software Foundation; either version 3 of the License, or
9 ;;; (at your option) any later version.
11 ;;; Mudsync is distributed in the hope that it will be useful, but
12 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 ;;; General Public License for more details.
16 ;;; You should have received a copy of the GNU General Public License
17 ;;; along with Mudsync. If not, see <http://www.gnu.org/licenses/>.
22 (define-module (mudsync gameobj)
23 #:use-module (mudsync command)
24 #:use-module (8sync systems actors)
25 #:use-module (8sync agenda)
26 #:use-module (srfi srfi-1)
27 #:use-module (ice-9 match)
28 #:use-module (oop goops)
43 ;;; Actions supported by all gameobj
44 (define gameobj-actions
46 (init (wrap-apply gameobj-init))
47 (get-commands (wrap-apply gameobj-get-commands))
48 (get-container-commands (wrap-apply gameobj-get-container-commands))
49 (get-occupants (wrap-apply gameobj-get-occupants))
50 (add-occupant! (wrap-apply gameobj-add-occupant!))
51 (remove-occupant! (wrap-apply gameobj-remove-occupant!))
52 (set-loc! (wrap-apply gameobj-set-loc!))
53 (get-name (wrap-apply gameobj-get-name))
54 (get-desc (wrap-apply gameobj-get-desc))
55 (goes-by (wrap-apply gameobj-goes-by))))
57 ;;; *all* game components that talk to players should somehow
58 ;;; derive from this class.
59 ;;; And all of them need a GM!
61 (define-class <gameobj> (<actor>)
66 ;; Uses a hash table like a set (values ignored)
67 (occupants #:init-thunk make-hash-table
68 #:getter gameobj-occupants)
71 (gm #:init-keyword #:gm
73 ;; a name to be known by
74 (name #:init-keyword #:name
76 (goes-by #:init-keyword #:goes-by
80 #:init-keyword #:desc)
82 ;; how to print our name
83 (name-f #:init-keyword #:name-f
84 #:getter gameobj-name-f
85 #:init-value (wrap gameobj-simple-name-f))
87 ;; Commands we can handle
88 (commands #:init-value '())
90 ;; Commands we can handle by being something's container
91 (container-commands #:init-value '())
94 (simple-dispatcher gameobj-actions)))
97 ;;; gameobj message handlers
98 ;;; ========================
100 ;; Kind of a useful utility, maybe?
101 (define (simple-slot-getter slot)
102 (lambda (actor message)
103 (reply-message actor message
104 #:val (slot-ref actor slot))))
107 ;; @@: This could be kind of a messy way of doing gameobj-init
108 ;; stuff. If only we had generic methods :(
109 (define-mhandler (gameobj-init actor message)
110 "Your most basic game object init procedure. Does nothing."
113 (define (gameobj-goes-by gameobj)
114 "Find the name we go by. Defaults to #:name if nothing else provided."
115 (cond ((slot-ref gameobj 'goes-by) =>
117 ((slot-ref gameobj 'name) =>
122 (define (val-or-run val-or-proc)
123 "Evaluate if a procedure, or just return otherwise"
124 (if (procedure? val-or-proc)
128 (define (filter-commands commands verb)
131 (equal? (command-verbs cmd)
135 (define-mhandler (gameobj-get-commands actor message verb)
136 "Get commands a co-occupant of the room might execute for VERB"
137 (define filtered-commands
138 (filter-commands (val-or-run (slot-ref actor 'commands))
140 (<-reply actor message
141 #:commands filtered-commands
142 #:goes-by (gameobj-goes-by actor)))
144 (define-mhandler (gameobj-get-container-commands actor message verb)
145 "Get commands as the container / room of message's sender"
146 (define filtered-commands
147 (filter-commands (val-or-run (slot-ref actor 'container-commands))
149 (<-reply actor message #:commands filtered-commands))
151 (define-mhandler (gameobj-add-occupant! actor message who)
152 "Add an actor to our list of present occupants"
153 (hash-set! (slot-ref actor 'occupants)
156 (define-mhandler (gameobj-remove-occupant! actor message who)
157 "Remove an occupant from the room."
158 (hash-remove! (slot-ref actor 'occupants) who))
160 (define-mhandler (gameobj-get-occupants actor message)
161 "Get all present occupants of the room."
163 (hash-map->list (lambda (key val) key)
164 (gameobj-occupants actor)))
166 (<-reply actor message
167 #:occupants occupants))
169 ;; @@: Should it really be #:id ? Maybe #:loc-id or #:loc?
170 (define-mhandler (gameobj-set-loc! actor message loc)
171 "Set the location of this object."
172 (define old-loc (gameobj-loc actor))
173 (format #t "DEBUG: Location set to ~s for ~s\n"
174 loc (actor-id-actor actor))
176 (slot-set! actor 'loc loc)
177 ;; Change registation of where we currently are
179 (<-wait actor loc 'add-occupant! #:who (actor-id actor)))
181 (<-wait actor old-loc 'remove-occupant! #:who (actor-id actor))))
183 (define gameobj-get-name (simple-slot-getter 'name))
184 (define gameobj-get-desc (simple-slot-getter 'desc))
186 (define (gameobj-simple-name-f gameobj)
187 "Simplest version: return ourselves for our name."
188 (gameobj-name gameobj))