Code - turtles-own

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

diff --git a/src/main/nvm/base.lisp b/src/main/nvm/base.lisp
index ba895e38456f65da034ceee932b860125cc56001..54d0246b62c7932341a5827b60e5fba378e1557a 100644 (file)
--- a/src/main/nvm/base.lisp
+++ b/src/main/nvm/base.lisp
@@ -3,14 +3,34 @@
 (defvar *current-id* 0)
 
 (defvar *turtles* nil)
+(defvar *turtles-own-vars* nil)
 (defvar *patches* nil)
 (defvar *myself* nil)
 (defvar *self* nil)
 (defvar *dimensions* nil)
+(defvar *globals* nil)
 (defvar *topology* :torus)
 (defvar *ticks* nil)
+(defvar *breeds* nil)
 
-(defstruct turtle who color heading xcor ycor (label "") (label-color 9.9d0) (size 1d0))
+(define-condition stop nil nil)
+
+(defmacro with-stop-handler (&rest forms)
+ "MACRO WITH-STOP-HANDLER &rest FORMS => HANDLED-FORM
+
+ARGUMENTS AND VALUES:
+
+  FORMS: body to be handled
+  HANDLED-FORM: body with handling
+
+DESCRIPTION:
+
+  WITH-STOP-HANDLER is a convenience macro to handle when
+  programs issue a stop condition.  When one does, a simple
+  :stop is returned."
+ `(handler-case (progn ,@forms) (stop (s) (declare (ignore s)) :stop)))
+
+(defstruct turtle who color heading xcor ycor (label "") (label-color 9.9d0) (size 1d0) shape own-vars)
 (defstruct patch color xcor ycor)
 
 (defun agentset-list (agentset)
@@ -38,3 +58,12 @@
 
 (defun agent-p (o)
  (or (turtle-p o) (patch-p o)))
+
+(defun breed-p (breed)
+ (find breed *breeds* :key #'car))
+
+(defun breed-default-shape (breed)
+ (second (find breed *breeds* :key #'car)))
+
+(defsetf breed-default-shape (breed) (shape)
+ `(setf (second (find ,breed *breeds* :key #'car)) ,shape))