请问：4 }' Q. T; Q8 _2 s! K8 B2 J! a
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？: D/ o6 r1 E8 @% W
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turtles-own [ energy ]
+ y; l( M* @' d4 mto setup
. [3 A) g9 z9 }" I/ Aclear-all
$ U \" ]" y9 }( m9 Vset-default-shape turtles "square"
3 p% e' N5 T) @. m* Ecrt nutrition
9 N3 F2 w7 @: W1 r7 cask turtles[
" j, C5 z- ^4 o& r! Z+ I set color white
* o; l9 I4 `4 r% E4 D setxy random-pxcor random-pycor]
& n% p* D" Q7 Q& B
7 S3 h6 S* k2 s" i/ \ dask n-of microbes-initialization patches6 q) ^6 W# \- f+ {/ m; u
[ set pcolor green]7 }4 I: Z* D+ x' e Q$ i2 a# o
ask turtles [set energy 1]: T, @, s! C6 E
end7 i0 }' [ ~9 _# w
% w4 c4 i1 B O* t4 b$ Pto go" y3 |( H+ m$ e" P
ask turtles [set heading 90 * random 4 fd 1]! Q0 L; [) R0 A5 E. |/ H+ s S
ask patches with [ any? turtles-here]
" }" a' L6 `. O" k: f [ if pcolor = green and random 100 < chance-of-congregating [tt ]]2 j D' H" t. T$ I+ B% @4 R% Z
ask turtles [ if energy = 0 [die ]]
8 ]6 W3 y% r8 i end
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1 O* K2 O4 ?$ k- z! `to tt. X9 \; g2 P' m' B7 ]2 E/ Q
ask patches [set pcolor gray ]
5 n, {+ U! C# k, \. U( u7 lask turtles [set energy energy - 1]2 v1 i" D+ k7 Y$ [$ k
end8 Y D) I& Y3 u$ X" S. F s8 u; l
1 W$ `5 E# S2 S' P5 ~+ l
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发表于 2008-4-8 10:49:43
楼主
