请问：: I d4 t# H2 L/ H9 a
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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* o$ G! `( Z% _- Z; Iturtles-own [ energy ]
/ S* n9 \4 [3 [: A/ hto setup7 _# V3 J/ f" @1 _$ x, Q1 c% B1 S; f
clear-all) W9 {+ [' J4 i! Q" f
set-default-shape turtles "square"
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# C% [8 r2 H o! v1 E. t7 Eask turtles[
: y0 Q# P! x/ Q' M2 b2 r0 U! M set color white5 z3 M( H0 \ ]% J' o
setxy random-pxcor random-pycor] U5 G' ^) ?' o- ^* h
3 {. a' j% y6 f& F" Eask n-of microbes-initialization patches
( t K1 Q' o- o- W5 k [ set pcolor green]0 B7 X( U" B- h2 z, n6 I. A% z
ask turtles [set energy 1]
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to go
4 s1 Q& ~& x! f: n* r8 E E2 t" h ask turtles [set heading 90 * random 4 fd 1]2 E8 n+ ?0 T+ |) w' ?
ask patches with [ any? turtles-here]
8 X8 K% k( C# y- e6 r% g [ if pcolor = green and random 100 < chance-of-congregating [tt ]]2 }% h7 U# a0 }( ` H: O
ask turtles [ if energy = 0 [die ]]% t7 M5 N, n2 V6 L1 D1 B& E; H
end
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ask patches [set pcolor gray ]
2 H/ \) o8 E5 E6 h3 i) Eask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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