请问：
; A, M6 |% b3 i; U7 M7 L4 w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？# P9 g5 R: C9 F0 c0 t; Y& x
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7 l+ \( M* s$ m8 u6 bturtles-own [ energy ]7 Y# \2 A+ y& n& D; [% h( q# `
to setup
' X$ ], i" ^& zclear-all5 O2 C( U6 }/ ^0 A9 u$ J, ]! y7 [
set-default-shape turtles "square"
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ask turtles[
: Z1 s: S0 W" @+ H) d set color white5 y# p( W" m0 _! A( F
setxy random-pxcor random-pycor]' i6 G' K* E! J3 @7 ?& @
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ask n-of microbes-initialization patches
; e, n- E+ Y4 f2 N' G [ set pcolor green]
4 k9 b/ @0 u3 \# M9 H2 N: x ask turtles [set energy 1]3 X) i$ p- X- e+ B! H: a
end# f6 f1 @7 ^ ?5 I$ m
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ask turtles [set heading 90 * random 4 fd 1]" H. L% s& F$ v
ask patches with [ any? turtles-here]
+ l% l1 u! x+ e [ if pcolor = green and random 100 < chance-of-congregating [tt ]]- ?9 ~/ W) A7 C4 Q: v
ask turtles [ if energy = 0 [die ]]
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/ {: \$ a% B2 d) `to tt$ F3 _, O' H+ B, H- F+ C! P F. ?
ask patches [set pcolor gray ]* @1 D3 U F6 y* O( P! W
ask turtles [set energy energy - 1]
8 f3 }( F, h) O0 J1 a! p7 N- Lend
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发表于 2008-4-8 10:49:43
楼主
