请问：- }) E# p6 c, T; A# {4 x4 n4 Y# i
随机产生的turtle 已经在patch的坐标上上下左右一格格运动，当turtle碰到一个随即分布的patch以一定概率粘合,patch变色，其他turtle经过也还是以一定概率粘合的，粘合后turtle的能量就会转变到patch上，并且以一定速率消耗它，怎么编写这个过程？下面是我编写的，运行时就出错了。怎么改正呢？$ W9 T5 R5 g7 R- e' d |$ z; z
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+ T% x3 r. C/ h Zturtles-own [ energy ]
u; @0 e" N' k* d8 ?. oto setup
' i' i. i1 t9 T! S- {& p. S0 b& k& xclear-all: W Y7 W' n v( g0 i9 z6 ` F. @
set-default-shape turtles "square"/ {9 ?5 ~8 A& P) {- \
crt nutrition
: O, S9 g" H8 Hask turtles[$ d2 r' x9 l) k( c3 c. l' C
set color white5 W/ _$ a: Q) n+ V
setxy random-pxcor random-pycor]3 I; |, p5 Q" |& H) f8 w7 E
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ask n-of microbes-initialization patches
2 b+ v! P) a3 y& K [ set pcolor green]& Q r- t. c' ^
ask turtles [set energy 1]. F( Q/ Z4 j# G& ^
end( Y+ O/ O2 f$ X, e
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to go( W8 F; G; G+ T; s! O
ask turtles [set heading 90 * random 4 fd 1]
. r) D# C: ?" J8 T ask patches with [ any? turtles-here]
+ t8 Z' Y; E7 B9 f1 f [ if pcolor = green and random 100 < chance-of-congregating [tt ]]# W" m& F% w: m
ask turtles [ if energy = 0 [die ]]
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to tt
/ H W# G2 T1 n2 xask patches [set pcolor gray ]
, H; o4 H& E6 q6 J4 vask turtles [set energy energy - 1]% g$ S! k) i' }
end
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发表于 2008-4-8 10:49:43
楼主
