请问：. D7 D+ x( r" `9 X O
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 ]7 G- M/ c% e6 g& o
to setup
$ A+ h! j5 ?4 n6 A& Qclear-all
3 f; G3 Z. N: bset-default-shape turtles "square"
5 k" K8 \/ j: _) y& D! @crt nutrition
0 s- y3 A( c6 _; B4 U$ cask turtles[; N# _ O/ \, V4 w5 v
set color white
& T; u) A8 G! U, Q6 n2 o setxy random-pxcor random-pycor]7 k( M" q/ F: ]0 v
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ask n-of microbes-initialization patches9 m+ k" t9 J! x1 `
[ set pcolor green]7 o1 D% R( U. X% U$ |0 K
ask turtles [set energy 1]8 X3 S' o- I# E7 p
end+ s, J( _! b l% p# D7 q A; Q
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ask turtles [set heading 90 * random 4 fd 1]
' {4 p2 B, @7 X+ P" v u2 V' b ask patches with [ any? turtles-here]- J3 [* A( ~- i4 \- ^* O
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]: Q1 S1 f7 ?) @- s/ X
ask turtles [ if energy = 0 [die ]]
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ask patches [set pcolor gray ]3 B5 w# H7 T' ~% V( I/ O. s, o% J( m
ask turtles [set energy energy - 1]
: C3 T) s6 ^# X6 V8 u6 qend
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发表于 2008-4-8 10:49:43
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