Prims - Implement stop

[clnl] / src / main / nvm / nvm.lisp

diff --git a/src/main/nvm/nvm.lisp b/src/main/nvm/nvm.lisp
index c98616aeeddcfb53a4cfcdb82abfaa1a0b70b178..a272a34526490aa84b4d189831beef373dd1fa54 100644 (file)
--- a/src/main/nvm/nvm.lisp
+++ b/src/main/nvm/nvm.lisp
@@ -150,9 +150,9 @@ DESCRIPTION:
     (loop
      :for agent := (funcall iter)
      :while agent
-     :do (let ((*myself* *self*) (*self* agent)) (funcall fn)))))
+     :do (let ((*myself* *self*) (*self* agent)) (with-stop-handler (funcall fn))))))
   ((agent-p agent-or-agentset)
-   (let ((*myself* *self*) (*self* agent-or-agentset)) (funcall fn)))
+   (let ((*myself* *self*) (*self* agent-or-agentset)) (with-stop-handler (funcall fn))))
   (t
    (error "Ask requires an agentset or agent but got: ~A" agent-or-agentset))))
 
@@ -188,6 +188,37 @@ DESCRIPTION:
  (clear-patches)
  (clear-ticks))
 
+(defun display ()
+ "DISPLAY => RESULT
+
+ARGUMENTS AND VALUES:
+
+  RESULT: undefined
+
+DESCRIPTION:
+
+  As of yet, this does nothing.  A placeholder method for forced dipslay
+  updates from the engine.
+
+  See http://ccl.northwestern.edu/netlogo/docs/dictionary.html#display"
+ nil)
+
+(defun stop ()
+ "STOP => RESULT
+
+ARGUMENTS AND VALUES:
+
+  RESULT: undefined
+
+DESCRIPTION:
+
+  Returns from the current stop block, which will halt the currently running
+  thing, be that the program, current ask block, or procedure.  Stop has odd
+  semantics that are best gleaned from the actual NetLogo manual.
+
+  See http://ccl.northwestern.edu/netlogo/docs/dictionary.html#stop"
+ (error (make-condition 'stop)))
+
 (defun of (fn agent-or-agentset)
  "OF FN AGENT-OR-AGENTSET => RESULT