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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 $ m6 ]) b/ z- s- \# a
to make-turtles7 K& D- U# e- @8 |; |1 D2 x
ask patch 0 0 [# q) |9 I" n4 Y8 F& @0 ~2 U
create-initial-turtles num-random-min "random-min" violet
2 {6 d: O3 {. H' @ create-initial-turtles num-random "random" brown
7 l( s9 k1 v" `4 J; o create-initial-turtles num-random-away "random-away" pink- a# q- O: T" y @
create-initial-turtles num-open-min "open-min" blue4 G: |+ c; C5 n* f# R- h5 E5 I" t4 N
create-initial-turtles num-open-min-max "open-min-max" orange ]4 U3 K! J7 h0 w* y
set-common-variables W2 l5 n& D$ Q. ~8 O3 K. G$ S$ P
end
+ `$ R& i. a4 \% X5 v8 G1 p5 M4 S
to create-initial-turtles [n turtle-rule turtle-color]
5 ~7 `+ h, X" P) {) c; n' p ask n-of n (patches in-radius initial-radius with [not any? turtles-here])9 U$ k, f7 r& u4 D/ k+ A0 }
[ sprout 18 B8 R" s$ p d& b) D; w p; \1 g
[ set rule turtle-rule G4 b! }, ^# i3 C
set color turtle-color ] ]$ {5 a; c0 r' a" ]2 p
end
% o2 S* H+ i+ |9 n
0 m7 Q1 O( ~- c5 w" E6 e: N O[ 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
