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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 Q6 V* y9 J; k C D; x* j
to make-turtles$ f/ {- e# ^* q+ _
ask patch 0 0 [
$ M2 s W$ G4 Y. f$ ~- u5 E create-initial-turtles num-random-min "random-min" violet6 ~: v* a i. r/ Q9 j
create-initial-turtles num-random "random" brown
9 C, [! D. d# \$ @8 Y0 Q create-initial-turtles num-random-away "random-away" pink
6 a2 ?/ U' Z$ R4 p create-initial-turtles num-open-min "open-min" blue3 E2 R8 }; u2 V
create-initial-turtles num-open-min-max "open-min-max" orange ]
: Y6 P* X6 h4 k4 C set-common-variables
. I+ Q. {( S* F$ E1 a/ P% |end! c3 |0 p: @1 F, H
( z) Q& n/ S+ p) c3 X% Oto create-initial-turtles [n turtle-rule turtle-color]4 p" ~7 T5 j* p
ask n-of n (patches in-radius initial-radius with [not any? turtles-here])
8 V" U* t+ U0 D) P; a7 ~5 q [ sprout 1
& d1 p, c. R$ x. D [ set rule turtle-rule
@# I4 k* W% p4 O% a& |" Y2 G set color turtle-color ] ]
& A1 t- R$ U. {$ G" |end
" g Q6 B: u1 o e! V/ Z; C, s+ A8 [2 k" a$ h
[ 本帖最后由 etamina 于 2008-4-30 13:05 编辑 ] |
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