请问：% @/ j3 K5 L7 k; L) h
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？8 N, y# E& a" b) s% i. U, J( u
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8 V7 J! W, [% Z/ gturtles-own [ energy ]+ F, Z6 s; O# G. N% \
to setup
9 H: E. G7 r5 L) [0 Eclear-all
1 i3 l W: o! o. @* uset-default-shape turtles "square"
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ask turtles[/ d s- Z1 V$ t/ p/ B# i) n' A
set color white: n* Z) H9 C& B$ d1 ? q
setxy random-pxcor random-pycor]6 R& ]5 A# z3 P! z8 I
! e2 V% r+ a& z6 h; a Lask n-of microbes-initialization patches
3 C" z# a1 V$ l9 ? [ set pcolor green]
( e1 t+ B4 i7 g: ]6 ?3 ~ ask turtles [set energy 1]
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to go
/ _0 a+ g% N& l7 G0 } ask turtles [set heading 90 * random 4 fd 1]% @; b$ h; I- A8 T
ask patches with [ any? turtles-here]' r4 g& v N: I( D
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]7 _( {, e( n1 Z& r: a
ask turtles [ if energy = 0 [die ]]7 D/ ^' V% Y$ r
end1 Y) a0 Y! g6 F( j
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to tt
3 u8 O) Z! @( g2 ~ask patches [set pcolor gray ]2 O) m1 l# I1 C
ask turtles [set energy energy - 1]
9 @5 h s# q( T) g9 jend
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发表于 2008-4-8 10:49:43
楼主
