请问：+ F F |, h% K7 K# ^, Y3 q
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？& U5 \( I) E. m$ ?/ `2 M
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! T" b1 K. w* @9 Z9 v+ [( gturtles-own [ energy ]7 E" Z5 a" U" G; y4 `
to setup
% T3 V0 ]0 k4 I$ Hclear-all* R/ d- g# x: c! t( O* H9 D
set-default-shape turtles "square"
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ask turtles[1 L- P& c. T+ o
set color white1 E% Z2 r, h. Z- k
setxy random-pxcor random-pycor]+ G! q7 @' W# ]( {( v1 t
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ask n-of microbes-initialization patches
. E u+ o* `* V/ S8 r9 G1 X, f [ set pcolor green]* e% M* t$ O% v; }0 a f
ask turtles [set energy 1]
; ~( [2 X- x/ Yend
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4 ^& `+ B" H% F: J. t6 }7 k) Oto go% p& s/ Z3 r( v# J# o6 W, x9 ?* @, T
ask turtles [set heading 90 * random 4 fd 1]. Z5 _% k6 h3 N* }5 l% o( d2 X
ask patches with [ any? turtles-here]
7 O B$ E" y+ D( O8 r [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
' |& z$ n6 s, f ask turtles [ if energy = 0 [die ]]
$ ~; U% u: u) f+ o. d end
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h0 x Z! z9 K5 l5 x( g5 p; F+ }to tt
: N& z* _9 W1 Q% k9 W* ~- Gask patches [set pcolor gray ] h7 R2 V% O- a9 ?0 a7 C1 Y! C
ask turtles [set energy energy - 1]8 Z9 v% E. L2 I& m% W, b
end- m& {5 }+ u Y" {
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发表于 2008-4-8 10:49:43
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