Most of the rest of support for live hacking!

[mudsync.git] / mudsync / gameobj.scm

diff --git a/mudsync/gameobj.scm b/mudsync/gameobj.scm
index c34e89bb5540a90308686c64ec7e3fc6caf58b98..cb844d1e65ab01a983ba81da808bd194c2e08993 100644 (file)
--- a/mudsync/gameobj.scm
+++ b/mudsync/gameobj.scm
@@ -55,7 +55,8 @@
    (goes-by (wrap-apply gameobj-act-goes-by))
    (visible-name (wrap-apply gameobj-visible-name))
    (self-destruct (wrap-apply gameobj-act-self-destruct))
-   (tell (wrap-apply gameobj-tell-no-op))))
+   (tell (wrap-apply gameobj-tell-no-op))
+   (assist-replace (wrap-apply gameobj-act-assist-replace))))
 
 ;;; *all* game components that talk to players should somehow
 ;;; derive from this class.
@@ -109,11 +110,37 @@
                    #:val (slot-ref actor slot))))
 
 
+(define (gameobj-replace-step-occupants actor replace-reply)
+  (define occupants
+    (message-ref replace-reply 'occupants #f))
+  ;; Snarf all the occupants!
+  (when occupants
+    (for-each
+     (lambda (occupant)
+       (<-wait actor occupant 'set-loc!
+               #:loc (actor-id actor)))
+     occupants)))
+
+(define gameobj-replace-steps*
+  (list gameobj-replace-step-occupants))
+
+(define (run-replacement actor message replace-steps)
+  (define replaces (message-ref message 'replaces #f))
+  (when replaces
+    (let ((replace-reply
+           (<-wait actor replaces 'assist-replace)))
+      (for-each
+       (lambda (replace-step)
+         (replace-step actor replace-reply))
+       replace-steps))))
+
+
 ;; @@: This could be kind of a messy way of doing gameobj-init
 ;;   stuff.  If only we had generic methods :(
 (define-mhandler (gameobj-init actor message)
-  "Your most basic game object init procedure.  Does nothing."
-  #f)
+  "Your most basic game object init procedure.
+Assists in its replacement of occupants if necessary and nothing else."
+  (run-replacement actor message gameobj-replace-steps*))
 
 (define (gameobj-goes-by gameobj)
   "Find the name we go by.  Defaults to #:name if nothing else provided."
@@ -263,3 +290,20 @@ By default, this is whether or not the generally-visible flag is set."
 ;; Unless an actor has a tell message, we just ignore it
 (define gameobj-tell-no-op
   (const 'no-op))
+
+(define (gameobj-replace-data-occupants actor)
+  "The general purpose list of replacement data"
+  (list #:occupants (hash-map->list (lambda (occupant _) occupant)
+                                    (slot-ref actor 'occupants))))
+
+(define (gameobj-replace-data* actor)
+  ;; For now, just call gameobj-replace-data-occupants.
+  ;; But there may be more in the future!
+  (gameobj-replace-data-occupants actor))
+
+;; So sad that objects must assist in their replacement ;_;
+;; But that's life in a live hacked game!
+(define (gameobj-act-assist-replace actor message)
+  "Vanilla method for assisting in self-replacement for live hacking"
+  (apply <-reply actor message
+         (gameobj-replace-data* actor)))