请问：* \2 G7 [7 t& q% K, G/ n
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？
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turtles-own [ energy ]$ R( N* p9 P$ a5 c2 L
to setup
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set-default-shape turtles "square"7 q- f% ?- {4 _( J1 G2 M
crt nutrition
0 D& i! U# d3 V) M8 X$ C& v8 m5 dask turtles[) M3 z& V: C" k4 S4 [9 K+ a4 d9 h
set color white/ U* R$ I. \1 P: r- r! Z$ H
setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches
: `4 z# \* k2 K [ set pcolor green]( p E' J4 \( R$ E3 r% w
ask turtles [set energy 1]4 C1 @8 g4 [! }
end! i1 O0 m# e, w8 T$ S. E' D. I
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ask turtles [set heading 90 * random 4 fd 1]( k h! T. k8 }
ask patches with [ any? turtles-here]
, q5 ~8 P$ n$ u [ if pcolor = green and random 100 < chance-of-congregating [tt ]]1 I' V8 h( a; s
ask turtles [ if energy = 0 [die ]]& ]1 w" j; Y8 V- H, f
end9 N3 {5 ?) {7 N2 S
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to tt; e2 y/ r% d( G. L4 V" T/ f: p3 K
ask patches [set pcolor gray ]4 R9 [! ]2 x: u* ]5 C* v
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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