请问：5 W7 R; M) P" 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？
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turtles-own [ energy ]+ j; Y' G: k! i* X8 j0 x; s
to setup" ?3 E; H- T. F0 B
clear-all
5 x f6 t- v0 z) @; Uset-default-shape turtles "square"
% a* T* b$ F5 D; f8 E* xcrt nutrition
2 ]% O7 k# U, w# eask turtles[ m; s. Q3 m% O$ E
set color white( N* K5 B' o- _2 g- w
setxy random-pxcor random-pycor]
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% P5 [1 Z4 b$ Q task n-of microbes-initialization patches
! }7 T/ H" X2 [. v; ? [ set pcolor green]9 N/ E" [" z* m1 o
ask turtles [set energy 1]
& H: I; B2 N2 X, G9 j5 v6 Qend- U9 R7 b: q# G: o% I5 F
# [7 h; D8 [6 hto go
8 n& i: U& ?- M& C Y5 p. y8 W' r ask turtles [set heading 90 * random 4 fd 1]$ t# r$ n& s7 h V- Q1 C
ask patches with [ any? turtles-here]/ X0 ^$ J) ^% [2 i0 _
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]. @* s2 E- n1 o! F+ C1 D
ask turtles [ if energy = 0 [die ]]
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to tt7 ~: [' C k% G3 r# T5 d% i- @
ask patches [set pcolor gray ]( ] W3 R2 {1 k6 K+ y" v% T
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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