+;;; Mudsync --- Live hackable MUD
+;;; Copyright © 2016 Christopher Allan 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/>.
+
+;;; Common "things" and stuff you can do with things.
+
+(define-module (mudsync thing)
+ #:use-module (mudsync command)
+ #:use-module (mudsync gameobj)
+ #:use-module (8sync systems actors)
+ #:use-module (8sync agenda)
+ #:use-module (oop goops)
+ #:use-module (ice-9 match)
+ #:use-module (ice-9 format)
+ #:export (<thing>
+ thing-commands
+ thing-contained-commands
+ thing-actions))
+
+(define thing-commands
+ (list
+ (direct-command "take" 'cmd-take)))
+
+;;; Are these kinds of things useful?
+;; ;; Doesn't inherit anything (gameobj has no commands)
+;; ;; so it's an alias.
+;; (define thing-commands* thing-commands)
+
+(define thing-contained-commands
+ (list
+ (empty-command "drop" 'cmd-drop)))
+
+;; ;; Doesn't inherit anything (gameobj has no contained-commands)
+;; ;; so it's an alias.
+;; (define thing-contained-commands* thing-contained-commands)
+
+(define thing-actions
+ (build-actions
+ (cmd-take (wrap-apply thing-cmd-take))
+ (cmd-drop (wrap-apply thing-cmd-drop))))
+
+(define thing-actions*
+ (append thing-actions
+ gameobj-actions))
+
+(define thing-dispatcher
+ (simple-dispatcher thing-actions*))
+
+(define-class <thing> (<gameobj>)
+ ;; Can be a boolean or a procedure accepting two arguments
+ ;; (thing-actor whos-acting)
+ (takeable #:init-value #f
+ #:init-keyword #:takeable)
+ ;; Can be a boolean or a procedure accepting two arguments
+ ;; (thing-actor whos-dropping)
+ (dropable #:init-value #t
+ #:init-keyword #:dropable)
+ (commands
+ #:init-value (wrap thing-commands))
+ (contained-commands
+ #:init-value (wrap thing-contained-commands))
+ (message-handler
+ #:init-value
+ (wrap-apply thing-dispatcher)))
+
+(define-mhandler (thing-cmd-take thing message direct-obj)
+ (define player (message-from message))
+ (define player-name
+ (message-ref
+ (<-wait thing player 'get-name)
+ 'val))
+ (define thing-name (slot-ref thing 'name))
+ (define should-take
+ (slot-ref-maybe-runcheck thing 'takeable player))
+ (if should-take
+ ;; Set the location to whoever's picking us up
+ (begin
+ (gameobj-set-loc! thing player)
+ (<- thing player 'tell
+ #:text (format #f "You pick up ~a.\n"
+ thing-name))
+ (<- thing (gameobj-loc thing) 'tell-room
+ #:text (format #f "~a picks up ~a.\n"
+ player-name
+ thing-name)
+ #:exclude player))
+ (<- thing player 'tell
+ #:text (format #f "It doesn't seem like you can pick up ~a.\n"
+ thing-name))))
+
+(define-mhandler (thing-cmd-drop thing message direct-obj)
+ (define player (message-from message))
+ (define player-name
+ (message-ref
+ (<-wait thing player 'get-name)
+ 'val))
+ (define player-loc
+ (message-ref
+ (<-wait thing player 'get-loc)
+ 'val))
+ (define thing-name (slot-ref thing 'name))
+ (define should-drop
+ (slot-ref-maybe-runcheck thing 'dropable player))
+ (if player-loc
+ ;; Set the location to whoever's picking us up's location
+ (begin
+ (gameobj-set-loc! thing player-loc)
+ (<- thing player 'tell
+ #:text (format #f "You drop ~a.\n"
+ thing-name))
+ (<- thing player-loc 'tell-room
+ #:text (format #f "~a drops ~a.\n"
+ player-name
+ thing-name)
+ #:exclude player))
+ (<- thing player 'tell
+ #:text (format #f "It doesn't seem like you can drop ~a.\n"
+ thing-name))))
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