请问：
: E2 w1 H7 U2 _5 _7 h4 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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8 y" x7 f m' u6 ^7 g4 E* k, M+ {turtles-own [ energy ]# o$ e2 `% [1 q( W; n
to setup I: ~: a% Z; g- ^% }3 a5 f* s
clear-all/ T) z4 F+ E3 T F
set-default-shape turtles "square"
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ask turtles[
" h1 `9 Q; k! u G& w set color white) i! W# u1 M7 e. N: d; x/ `9 X( C' k
setxy random-pxcor random-pycor]3 C5 M1 @6 t6 z' k$ k, g5 H
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ask n-of microbes-initialization patches
9 y. `! S& D5 R [ set pcolor green]# J8 }. C2 T& `* B, ]9 \: P8 W/ [
ask turtles [set energy 1]
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! S4 [' z1 r3 ^: P2 g7 Y9 Qto go
# W$ Q6 @6 u: I3 e, w' U ask turtles [set heading 90 * random 4 fd 1]! r/ J/ o# u; o" z
ask patches with [ any? turtles-here]
0 p) ^' N6 o! i2 q: q [ if pcolor = green and random 100 < chance-of-congregating [tt ]]0 L0 _: _" _0 } M7 F
ask turtles [ if energy = 0 [die ]]
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to tt
$ ?/ V3 a( f3 G4 G% B- z# B& mask patches [set pcolor gray ]
5 C7 g6 M/ b1 C/ Zask turtles [set energy energy - 1]) c: Q: s& q& P' K# [
end
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发表于 2008-4-8 10:49:43
楼主
