X-Git-Url: https://jxself.org/git/?p=mudsync.git;a=blobdiff_plain;f=mudsync.scm;h=1b024f9394a41f2df8bab473bda6a05b96d22310;hp=8cc07b1389bb5fff85619774ace295b6b8aca8a3;hb=1c10b6fdd8662522b6a2103f7ad59c588acfa2dc;hpb=787335368937c1a07a0a098b8aa9b616c76ffebb

diff --git a/mudsync.scm b/mudsync.scm
index 8cc07b1..1b024f9 100644
--- a/mudsync.scm
+++ b/mudsync.scm
@@ -1,5 +1,6 @@
 ;;; Mudsync --- Live hackable MUD
 ;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
+;;; Copyright © 2012, 2014 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of Mudsync.
 ;;;
@@ -16,526 +17,29 @@
 ;;; You should have received a copy of the GNU General Public License
 ;;; along with Mudsync.  If not, see <http://www.gnu.org/licenses/>.
 
-(use-modules (8sync systems actors)
-             (8sync systems actors debug)
-             (8sync agenda)
-             (ice-9 format)
-             (ice-9 match)
-             (gdbm)
-             (oop goops))
-
-
-
-;;; Networking
-;;; ==========
-
-(define %default-server #f)
-(define %default-port 8889)
-
-(define-class <network-manager> (<actor>)
-  (server-socket #:accessor nm-server-socket)
-  ;; mapping of client -> client-id
-  (clients #:accessor nm-clients
-           #:init-thunk make-hash-table)
-  ;; send input to this actor
-  (send-input-to #:getter nm-send-input-to
-                 #:init-keyword #:send-input-to)
-  (message-handler
-   #:init-value
-   (make-action-dispatch
-    ((start-listening actor message)
-     (nm-install-socket actor (message-ref message 'server %default-server)
-                        (message-ref message 'port %default-port)))
-    ((send-to-client actor message client data)
-     (nm-send-to-client-id actor client data)))))
-
-(define-method (nm-close-everything (nm <network-manager>) remove-from-agenda)
-  "Shut it down!"
-  ;; close all clients
-  (hash-for-each
-   (lambda (_ client)
-     (close client)
-     (if remove-from-agenda
-         (8sync-port-remove client)))
-   (nm-clients nm))
-  ;; reset the clients list
-  (set! (nm-clients) (make-hash-table))
-  ;; close the server
-  (close (nm-server-socket nm))
-  (if remove-from-agenda
-      (8sync-port-remove (nm-server-socket nm))))
-
-;; Maximum number of backlogged connections when we listen
-(define %maximum-backlog-conns 128)     ; same as SOMAXCONN on Linux 2.X,
-                                        ; says the intarwebs
-
-(define (nm-install-socket nm server port)
-  "Install socket on SERVER with PORT"
-  (let ((s (socket PF_INET  ; ipv4
-                   SOCK_STREAM  ; two-way connection-based byte stream
-                   0))
-        (addr (if server
-                  (inet-pton AF_INET server)
-                  INADDR_LOOPBACK)))
-    ;; Totally mimed from the Guile manual.  Not sure if we need this, but:
-    ;; http://www.unixguide.net/network/socketfaq/4.5.shtml
-    (setsockopt s SOL_SOCKET SO_REUSEADDR 1) ; reuse port even if port is busy
-    ;; Connecting to a non-specific address:
-    ;;   (bind s AF_INET INADDR_ANY port)
-    ;; Should this be an option?  Guess I don't know why we'd need it
-    ;; @@: If we wanted to support listening on a particular hostname,
-    ;;   could see 8sync's irc.scm...
-    (bind s AF_INET addr port)
-    ;; Listen to connections
-    (listen s %maximum-backlog-conns)
-
-    ;; Throw a system-error rather than block on an (accept)
-    ;; that has nothing to do
-    (fcntl s F_SETFL
-           (logior O_NONBLOCK
-                   (fcntl s F_GETFL)))
-
-    ;; @@: This is used in Guile's http server under the commit:
-    ;;       * module/web/server/http.scm (http-open): Ignore SIGPIPE. Keeps the
-    ;;         server from dying in some circumstances.
-    ;;   (sigaction SIGPIPE SIG_IGN)
-    ;; Will this break other things that use pipes for us though?
-
-    (set! (nm-server-socket nm) s)
-
-    (format #t "Listening for clients in pid: ~s\n" (getpid))
-    (8sync-port s #:read (lambda (s) (nm-new-client nm s)))
-    ;; TODO: set up periodic close of idle connections?
-    ))
-
-(define (nm-new-client nm s)
-  "Handle new client coming in to socket S"
-  (let* ((client-connection (accept s))
-         (client-details (cdr client-connection))
-         (client (car client-connection)))
-    (format #t "New client: ~s\n" client-details)
-    (format #t "Client address: ~s\n"
-            (gethostbyaddr
-             (sockaddr:addr client-details)))
-
-    (let ((client-id (big-random-number)))
-      (hash-set! (nm-clients nm) client-id client)
-      ;; @@: Do we need an 8sync-port-wait here?
-      ;;   Is such a thing even possible? :\
-      (8sync-port client #:read (nm-make-client-receive nm client-id))
-      (<- nm (nm-send-input-to nm) 'new-client #:client client-id))))
-
-(define (nm-make-client-receive nm client-id)
-  "Make a method to receive client data"
-  (let ((buffer '()))
-    (define (reset-buffer)
-      (set! buffer '()))
-    (define (should-read-char client)
-      (and (not (port-closed? client))
-           (char-ready? client)
-           (not (eof-object? (peek-char client)))))
-    (define (receive-handler client)
-      (while (should-read-char client)
-        (set! buffer (cons (read-char client) buffer))
-        (match buffer
-          (;; @@: Do we need the "char?"
-           (#\newline #\return (? char? line-chars) ...)
-           (let ((ready-line (list->string (reverse line-chars))))
-             ;; reset buffer
-             (set! buffer '())
-             ;; run it
-             (nm-handle-line nm client client-id ready-line)))
-          (_ #f)))
-      ;; Shut things down on closed port or EOF object
-      (cond
-       ((port-closed? client)
-        (nm-handle-port-closed nm client client-id))
-       ((and (char-ready? client)
-             (eof-object? (peek-char client)))
-        (nm-handle-port-eof nm client client-id))))
-    receive-handler))
-
-(define (nm-handle-port-closed nm client client-id)
-  "Handle a closed port"
-  (format #t "DEBUG: handled closed port ~x\n" client-id)
-  (8sync-port-remove client)
-  (hash-remove! (nm-clients nm) client-id))
-
-(define-method (nm-handle-port-eof nm client client-id)
-  "Handle seeing an EOF on port"
-  (format #t "DEBUG: handled eof-object on port ~x\n" client-id)
-  (close client)
-  (8sync-port-remove client)
-  (hash-remove! (nm-clients nm) client-id))
-
-(define-method (nm-handle-line nm client client-id line)
-  "Handle an incoming line of input from a client"
-  (<- nm (nm-send-input-to nm) 'client-input
-      #:data line
-      #:client client-id))
-
-(define-method (nm-send-to-client-id nm client-id data)
-  "Send DATA to TO-CLIENT id"
-  (define client-obj (hash-ref (nm-clients nm) client-id))
-  (if (not client-obj)
-      (throw 'no-such-client
-             "Asked to send data to client but that client doesn't exist"
-             #:client-id client-id
-             #:data data))
-  (display data client-obj))
-
-; (ez-run-hive hive (list (bootstrap-message hive (actor-id nm) 'start-listening)))
-
-
-;; (define-method (nm-close-port (nm <network-manager>)))
-
-
-
-;;; The game master!  Runs the world.
-;;; =================================
-
-;; @@: We could call this a "world builder" instead...
-;;   I kinda like calling it a GM though.
-
-(define-class <game-master> (<actor>)
-  ;; Directory of "special" objects.
-  (special-dir #:init-thunk make-hash-table
-               #:getter gm-special-dir)
-
-  ;; Room directory.  Room symbols to locations.
-  (room-dir #:init-thunk make-hash-table
-            #:getter gm-room-dir)
-
-  ;; A mapping of client ids to in-game actors
-  ;; and a reverse ;p
-  (client-dir #:init-thunk make-hash-table
-              #:getter gm-client-dir)
-  (reverse-client-dir #:init-thunk make-hash-table
-                      #:getter gm-reverse-client-dir)
-
-  ;; Network manager
-  (network-manager #:accessor gm-network-manager
-                   #:init-value #f)
-
-  ;; How we get a new connection acclimated to the system
-  (new-conn-handler #:accessor gm-new-conn-handler
-                    #:init-keyword #:new-conn-handler)
-
-  (message-handler
-   #:init-value
-   (make-action-dispatch
-    (init-world (wrap-apply gm-init-world))
-    (client-input (wrap-apply gm-handle-client-input))
-    (lookup-room (wrap-apply gm-lookup-room))
-    (new-client (wrap-apply gm-new-client))
-    (write-home (wrap-apply gm-write-home)))))
-
-
-;;; .. begin world init stuff ..
-
-(define (gm-init-world gm message)
-  ;; Load database
-  ;;  TODO
-
-  ;; Init basic rooms / structure
-  (gm-init-rooms gm (message-ref message 'room-spec))
-
-  ;; Restore database-based actors
-  ;;  TODO
-
-  ;; Set up the network
-  (gm-setup-network gm))
-
-(define (gm-init-rooms gm rooms-spec)
-  "Initialize the prebuilt rooms"
-  ;; @@: Would it be nicer to just allow passing in
-  ;;     #:exits to the room spec itself?
-  (define (exit-from-spec exit-spec)
-    "Take room exits syntax from the spec, turn it into exits"
-    (match exit-spec
-      ((name to-symbol desc)
-       (make <exit>
-         #:name name
-         #:to-symbol to-symbol
-         #:desc desc))))
-
-  (define rooms
-    (map
-     (match-lambda
-       ((room-symbol room-class
-                     room-args ...
-                     (room-exits ...))
-        ;; initialize the room
-        (let ((room
-               (apply create-actor* gm room-class "room"
-                      #:gm (actor-id gm)
-                      #:exits (map exit-from-spec room-exits)
-                      room-args)))
-          ;; register the room
-          (hash-set! (gm-room-dir gm) room-symbol room)
-          ;; pass it back to the map
-          room)))
-     rooms-spec))
-
-  ;; now wire up all the exits
-  (for-each
-   (lambda (room)
-     (format #t "Wiring up ~s...\n" (address->string room))
-     (<-wait gm room 'wire-exits!))
-   rooms))
-
-
-(define (gm-setup-network gm)
-  ;; Create a default network manager if none available
-  (set! (gm-network-manager gm)
-        (create-actor* gm <network-manager> "netman"
-                       #:send-input-to (actor-id gm)))
-
-  ;; TODO: Add host and port options
-  (<-wait gm (gm-network-manager gm) 'start-listening))
-
-(define (gm-setup-database gm)
-  'TODO)
-
-;;; .. end world init stuff ...
-
-(define-mhandler (gm-new-client actor message client)
-  ;; @@: Maybe more indirection than needed for this
-  ((gm-new-conn-handler actor) actor client))
-
-
-(define (gm-handle-client-input actor message)
-  "Handle input from a client."
-  (define client-id (message-ref message 'client))
-  (define input (message-ref message 'data))
-  (format #t "From ~s: ~s\n" client-id input)
-  (<- actor (gm-network-manager actor) 'send-to-client
-      #:client client-id
-      #:data "Thanks, we got it!\n"))
-
-(define-mhandler (gm-lookup-room actor message symbol)
-  (define room-id
-    (slot-ref (gm-room-dir actor) symbol))
-  (<-reply actor message room-id))
-
-(define-mhandler (gm-write-home actor message text)
-  (define client-id (hash-ref (gm-reverse-client-dir actor)
-                              (message-from message)))
-  (<- actor (gm-network-manager actor) 'send-to-client
-      #:client client-id
-      #:data text))
-
-
-;;; GM utilities
-
-(define (gm-register-client! gm client-id player)
-  (hash-set! (gm-client-dir gm) client-id player)
-  (hash-set! (gm-reverse-client-dir gm) player client-id))
-
-(define (gm-unregister-client! gm client-id)
-  "Remove a connection/player combo and ask them to self destruct"
-  (match (hash-remove! (gm-client-dir gm) client-id)  ; Remove from our client dir
-    ((_ . player-id)
-     ;; Remove from reverse table too
-     (hash-remove! (gm-reverse-client-dir gm) client-id)
-     ;; Destroy player 
-     (<- gm player-id 'destroy-self))
-    (#f (throw 'no-client-to-unregister
-               "Can't unregister a client that doesn't exist?"
-               client-id))))
-
-;;; An easy default
-
-(define (make-default-room-conn-handler default-room)
-  "Make a handler for a GM that dumps people in a default room
-with an anonymous persona"
-  (let ((count 0))
-    (lambda (gm client-id)
-      (define guest-name (string-append "Guest-"
-                                        (number->string count)))
-      (define room-id
-        (hash-ref (gm-room-dir gm) default-room))
-      ;; create and register the player
-      (define player
-        (create-actor* gm <player> "player"
-                       #:username guest-name
-                       #:gm (actor-id gm)
-                       #:client client-id))
-
-      ;; Register the player in our database of players -> connections
-      (gm-register-client! gm client-id player)
-      ;; Dump the player into the default room
-      (<-wait gm player 'set-loc! #:id room-id)
-      ;; Initialize the player
-      (<- gm player 'init))))
-
-
-;;; Game actor
-;;; ==========
-
-;;; *all* game components that talk to players should somehow
-;;; derive from this class.
-;;; And all of them need a GM!
-
-(define-class <gameobj> (<actor>)
-  ;; location id
-  (loc #:init-value #f
-       #:accessor gameobj-loc)
-  ;; game master id
-  (gm #:init-keyword #:gm
-      #:getter gameobj-gm)
-
-  ;; Commands we can handle
-  (commands #:init-value #f)
-  ;; Commands we can handle by being something's container
-  (contain-commands #:init-value #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)
-  (desc #:accessor exit-desc
-               #:init-keyword #:desc)
-
-  ;; *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> (<gameobj>)
-  (name #:init-keyword #:name)
-  (desc #:init-value ""
-               #:init-keyword #:desc)
-  ;; 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
-
-  (message-handler
-   #:allocation #:each-subclass
-   #:init-value
-   (make-action-dispatch
-    ;; desc == description
-    (get-desc
-     (simple-slot-getter 'desc))
-    (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)
-  "Actually hook up the rooms' exit addresses to the rooms they
-claim to point to."
-  (for-each
-   (lambda (exit)
-     (define new-exit
-       (<-wait room (gameobj-gm room) 'lookup-room
-               #:symbol (exit-to-symbol exit)))
-
-     (set! (exit-to-address exit) new-exit))
-
-   (room-exits room)))
-
-
-
-;;; Players
-;;; =======
-
-(define-class <player> (<gameobj>)
-  (username #:init-keyword #:username
-            #:accessor player-username)
-  ;; Connection id
-  (client #:accessor player-client)
-
-  (message-handler
-   #:init-value
-   (make-action-dispatch
-    (set-loc! (wrap-apply player-set-loc!))
-    (init (wrap-apply player-init!)))))
-
-;;; player message handlers
-
-(define-mhandler (player-set-loc! player message id)
-  (format #t "DEBUG: Location set to ~s for player ~s\n"
-          id (actor-id-actor player))
-  (set! (gameobj-loc player) id))
-
-(define-mhandler (player-init! player message)
-  (player-look-around player))
-
-;;; player methods
-
-(define (player-look-around player)
-  (define room-name
-    (message-ref
-     (<-wait player (gameobj-loc player) 'get-name)
-     'val))
-  (define room-desc
-    (message-ref
-     (<-wait player (gameobj-loc player) 'get-desc)
-     'val))
-  (define message-text
-    (format #f "**~a**\n~a\n" room-name room-desc))
-
-  (<- player (gameobj-gm player) 'write-home #:text message-text))
-
-
-;;; Debugging stuff
-;;; ===============
-
-(define %test-gm #f)
-
-(define (run-demo db-path room-spec default-room)
-  (define hive (make-hive))
-  (define new-conn-handler
-    (make-default-room-conn-handler default-room))
-  (define gm
-    (hive-create-actor-gimmie* hive <game-master> "gm"
-                               #:new-conn-handler new-conn-handler))
-  (set! %test-gm gm)
-  ;; @@: Boy, wouldn't it be nice if the agenda could do things
-  ;;   on interrupt :P
-  (ez-run-hive hive
-               (list (bootstrap-message hive (actor-id gm) 'init-world
-                                        #:room-spec room-spec))))
+(define-module (mudsync)
+  #:use-module (8sync actors)
+  #:use-module (8sync agenda)
+  #:use-module (ice-9 format)
+  #:use-module (ice-9 match)
+  #:use-module (oop goops))
+
+
+;;; Composite model stuff borrowed from Guix.  Thanks, Ludo!
+(eval-when (eval load compile)
+  (begin
+    (define %public-modules
+      '(game-master
+        gameobj
+        networking
+        command
+        player
+        room
+        run-game
+        utils
+        parser))
+
+    (for-each (let ((i (module-public-interface (current-module))))
+                (lambda (m)
+                  (module-use! i (resolve-interface `(mudsync ,m)))))
+              %public-modules)))