请问：1 K/ r F( T) @. P. U' g
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& z" _* \$ Q5 T) t9 n6 r/ i* S
to setup
; ~! a, l3 n( R4 rclear-all
( @+ k# y% G; Vset-default-shape turtles "square"
3 O9 \9 k% U3 L* [crt nutrition
3 a" h4 d/ F, Z( Mask turtles[
: u9 A4 J7 y9 u# G3 o set color white
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/ s5 Q1 {! V1 q/ j; [. A0 [ask n-of microbes-initialization patches
# r8 w# ?) i6 I: X6 I [ set pcolor green]
- `/ z x. i N8 M1 p: ]. e ask turtles [set energy 1]: K0 W1 j" s" V' P" f
end
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ask turtles [set heading 90 * random 4 fd 1], a; s1 B8 Z1 u+ V" ^8 J) v
ask patches with [ any? turtles-here]* Y; u& j F: |. ?9 ^9 R
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]; ^/ H2 P; q9 I7 S
ask turtles [ if energy = 0 [die ]]
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to tt
& Y2 u3 Q0 [; S& q: r( k8 r$ g+ H. Iask patches [set pcolor gray ]9 U7 L/ r! L. G9 ]0 d" ?6 Q+ q
ask turtles [set energy energy - 1]
' r! n8 A+ Z6 G1 E1 Cend
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发表于 2008-4-8 10:49:43
楼主
