请问：1 q/ `, }1 N3 f2 F, K* R
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 ]
" i' _& j- M' q$ a* Rto setup% z* g, J# {4 r# O4 F3 c
clear-all' D. ?9 V; l# l4 h
set-default-shape turtles "square"
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ask turtles[
; h: t$ r9 s* p set color white
! w. x, G; Y) Z6 | setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches, Y: R& E; E4 g# k& Q
[ set pcolor green]" C" A9 y- v/ p. g+ v
ask turtles [set energy 1]
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" p3 y( f" P3 ~7 a& ~0 T) _$ Vto go L4 P! r, U1 Y0 E5 Q" |$ k3 V
ask turtles [set heading 90 * random 4 fd 1]
0 m( D9 }* V! p* P ask patches with [ any? turtles-here]/ O) U: s0 {0 B( H
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
0 r3 c" L2 d& f0 N4 u0 ? ask turtles [ if energy = 0 [die ]]
+ ~9 W$ O7 V2 ^* v end
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to tt) Q3 [4 m4 H$ r
ask patches [set pcolor gray ]
. H6 ~2 ]1 p( @/ D: yask turtles [set energy energy - 1]
, f& Z: d* t; { rend
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发表于 2008-4-8 10:49:43
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