+\f
+;;; Rooms
+;;; =====
+
+;; @@: Maybe make this into a record type when this congeals a bit?
+;; I dunno?
+
+(define-class <exit> ()
+ ;; Used for wiring
+ (to-symbol #:accessor exit-to-symbol
+ #:init-keyword #:to-symbol)
+ ;; The actual address we use
+ (to-address #:accessor exit-to-address
+ #:init-keyword #:address)
+ ;; Name of the room (@@: Should this be names?)
+ (name #:accessor exit-name
+ #:init-keyword #:name)
+ (description #:accessor exit-description
+ #:init-keyword #:description)
+
+ ;; *Note*: These two methods have an extra layer of indirection, but
+ ;; it's for a good reason.
+ (visible-check #:init-value (const #t)
+ #:init-keyword #:visible-check)
+ ;; By default all exits can be traversed
+ (traverse-check #:init-value (const #t)
+ #:init-keyword #:traverse-check))
+
+(define* (exit-can-traverse? exit actor
+ #:optional (target-actor (actor-id actor)))
+ ((slot-ref exit 'traverse-check) exit actor target-actor))
+
+(define* (exit-is-visible? exit actor
+ #:optional (target-actor (actor-id actor)))
+ ((slot-ref exit 'traverse-check) exit actor target-actor))
+
+
+;; Kind of a useful utility, maybe?
+(define (simple-slot-getter slot)
+ (lambda (actor message)
+ (reply-message actor message
+ #:val (slot-ref actor slot))))
+
+
+(define-class <room> (<actor>)
+ (name #:init-keyword #:name)
+ (description #:init-value ""
+ #:init-keyword #:description)
+ ;; Uses a hash table like a set (values ignored)
+ (occupants #:init-thunk make-hash-table)
+ ;; A list of <exit>
+ (exits #:init-value '()
+ #:getter room-exits)
+ ;; @@: Maybe eventually <room> will inherit from some more general
+ ;; game object class
+ (gm #:init-keyword #:gm
+ #:getter room-gm)
+
+ (message-handler
+ #:allocation #:each-subclass
+ #:init-value
+ (make-action-dispatch
+ (get-description
+ (simple-slot-getter 'description))
+ (get-name
+ (simple-slot-getter 'name))
+ ((register-occupant! actor message who)
+ "Register an actor as being a occupant of this room"
+ (hash-set! (slot-ref actor 'occupants) who #t))
+ ((evict-occupant! actor message who)
+ "De-register an occupant removed from the room"
+ (hash-remove! (slot-ref actor 'occupants) who))
+ (wire-exits! (wrap-apply room-wire-exits!)))))
+
+(define (room-wire-exits! room message)
+ (for-each
+ (lambda (exit)
+ (define new-exit
+ (<-wait room (room-gm room) 'lookup-room
+ #:symbol (exit-to-symbol exit)))
+
+ (set! (exit-to-address exit) new-exit))
+
+ (room-exits room)))
+
+
+\f
+;;; Players
+;;; =======
+
+