请问：$ P& K4 _' n1 C9 u+ @; 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？
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turtles-own [ energy ]
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clear-all
y: `0 F! p( V5 R% ^& i. }set-default-shape turtles "square"' X' ]5 I( D; n- U
crt nutrition
" T! k6 E3 p1 J- E% Nask turtles[
% s, d/ K1 s( X {+ P set color white- G, |2 v3 _' ^. y# S Z) x' @5 B
setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches' q2 q; Q, @. ]3 L9 C
[ set pcolor green]& K2 ]# [* M! F
ask turtles [set energy 1]
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to go }) `8 y! d5 i4 M4 G2 @
ask turtles [set heading 90 * random 4 fd 1] W" S& D/ f, }& l# G- ?* F9 t9 o
ask patches with [ any? turtles-here]
: ~- l& R2 A! {9 x& V; | [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
. U% e' q& b% f; o ask turtles [ if energy = 0 [die ]]
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. s1 W) `5 l7 Zto tt
Q2 Y5 z) ^# a% P. G2 pask patches [set pcolor gray ]! L0 D7 k5 A5 ?) j" i5 K5 C, E! _
ask turtles [set energy energy - 1]( F$ g g& s" X/ F0 Z4 C( H
end
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发表于 2008-4-8 10:49:43
楼主
