1 ; Copyright 2022 Frank Duncan (frank@consxy.com) under AGPL3. See distributed LICENSE.txt.
2 (in-package #:clnl-nvm)
4 (defun agent-value (var &optional (agent *self*))
5 "AGENT-VALUE VAR &optional AGENT => RESULT
10 AGENT: an agent, defaulting to *self*
11 RESULT: the value of VAR
15 AGENT-VALUE is the general agent variable access function. For many
16 NetLogo reporters, the compilation results is AGENT-VALUE. The list of
17 valid values are any builtin variable in the NetLogo dictionary, as well
18 as any *-own variable.
20 See http://ccl.northwestern.edu/netlogo/docs/dictionary.html for builtins"
21 (agent-value-inner agent (intern (string-upcase var) :keyword)))
23 (defsetf agent-value (var &optional (agent '*self*)) (new-value)
24 `(set-agent-value-inner ,agent ,var ,new-value))
26 (defgeneric set-agent-value-inner (agent var new-value))
27 (defgeneric agent-value-inner (agent var))
29 (defmacro defagent-value (type symb &optional accessor)
31 ((accessor (or accessor (intern (format nil "~A-~A" type symb))))
36 (defmethod agent-value-inner ((,agent ,type) (,var (eql ,symb))) (,accessor ,agent))
37 (defmethod set-agent-value-inner ((,agent ,type) (,var (eql ,symb)) ,new-val) (setf (,accessor ,agent) ,new-val)))))
39 ; Don't want the setter for :who
40 (defmethod agent-value-inner ((turtle turtle) (var (eql :who))) (turtle-who turtle))
42 (defmethod agent-value-inner ((turtle turtle) (var (eql :pcolor)))
43 (patch-color (patch-at (turtle-xcor turtle) (turtle-ycor turtle))))
45 (defmethod set-agent-value-inner ((turtle turtle) (var (eql :pcolor)) new-val)
46 (setf (patch-color (patch-at (turtle-xcor turtle) (turtle-ycor turtle))) new-val))
48 (defagent-value patch :pcolor patch-color)
50 (defagent-value turtle :color)
51 (defagent-value turtle :label)
52 (defagent-value turtle :label-color)
53 (defagent-value turtle :size)
55 (defmethod agent-value-inner ((turtle turtle) var)
56 (when (not (find var *turtles-own-vars*)) (error "~S is not a turtle variable" var))
57 (or (getf (turtle-own-vars turtle) var) 0d0))
59 (defmethod set-agent-value-inner ((turtle turtle) var new-val)
60 (when (not (find var *turtles-own-vars*)) (error "~S is not a turtle variable" var))
61 (if (getf (turtle-own-vars turtle) var)
62 (setf (getf (turtle-own-vars turtle) var) new-val)
63 (setf (turtle-own-vars turtle) (append (list var new-val) (turtle-own-vars turtle)))))
65 (defmethod agent-value-inner ((patch patch) var)
66 (when (not (find var *patches-own-vars*)) (error "~S is not a patch variable" var))
67 (or (getf (patch-own-vars patch) var) 0d0))
69 (defmethod set-agent-value-inner ((patch patch) var new-val)
70 (when (not (find var *patches-own-vars*)) (error "~S is not a patch variable" var))
71 (if (getf (patch-own-vars patch) var)
72 (setf (getf (patch-own-vars patch) var) new-val)
73 (setf (patch-own-vars patch) (append (list var new-val) (patch-own-vars patch)))))