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5仿真币
下面的语句中ask patch和create-initial-turtles 后面接的[ ]中的语句是什么含义，其中非原语的都是定义的全局或者外部变量。语法有点奇怪，谁能帮我解释一下吗？多谢 2 }2 L+ ~4 @' k4 t ^
to make-turtles
~0 n$ e7 r8 G, _# b ask patch 0 0 [
( C' s0 V+ b7 f. Y& X3 A1 [ create-initial-turtles num-random-min "random-min" violet
/ S2 J2 f6 S! q" I$ B/ }2 Q0 K' E9 Q1 \ create-initial-turtles num-random "random" brown
$ C [* s% G6 ?& @ create-initial-turtles num-random-away "random-away" pink( \3 D0 I! l! C4 S2 G# ~. c
create-initial-turtles num-open-min "open-min" blue) J% l2 \0 v' `- z
create-initial-turtles num-open-min-max "open-min-max" orange ]! F# N3 q# q' k1 p4 M3 d* F
set-common-variables: _) @. Z" ~7 B) ]$ f% e1 W+ m
end
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to create-initial-turtles [n turtle-rule turtle-color]
$ C8 W+ [: E& L% Z: A! L+ M1 K ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
+ s+ n% A; @; \* Y+ G- M4 Q$ R% f [ sprout 1
! e" ]+ A2 {3 b/ x/ F6 g2 Q [ set rule turtle-rule
0 s! k6 M# K' p# N5 e2 j set color turtle-color ] ]
9 Y9 l2 }. E. ], l* N# h, |end
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9 W) _( ] R3 y$ i" {[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ] |
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发表于 2008-4-30 10:05:49
