请问：. Y8 M4 |6 J% H! I- 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？, {2 n" z- w( v3 ]$ J& r$ {
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2 c9 ~5 b! H) k) s& P3 a2 bturtles-own [ energy ]
1 \/ c1 Z4 M* [, q; `/ A: L2 Wto setup
8 ]& C5 x4 s# G% T: M- mclear-all; b( F% _1 a A8 R8 [
set-default-shape turtles "square"+ r- L3 s& v: E. R% Y* J' k
crt nutrition
6 p4 k) `8 z% [; p+ hask turtles[3 f! Y9 S( c* P
set color white
" m. f, u3 [4 P2 `2 J: @- u9 k. [ setxy random-pxcor random-pycor]1 M% \0 G: C9 s( q
3 n. s- G2 V& n8 p. {& zask n-of microbes-initialization patches
7 u- J: r$ Z' @1 `- E8 I5 @ [ set pcolor green]
b% C4 n" o) P1 f# ~+ T ask turtles [set energy 1]% Z! C# E9 F- s0 r6 A+ z
end6 Q5 _ _4 c& W" _
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to go% ^. G' y9 T1 s" _4 G( Q
ask turtles [set heading 90 * random 4 fd 1]
- c4 H. u& B* D. C5 C ask patches with [ any? turtles-here]
$ k: S4 z& ?3 g" c, D [ if pcolor = green and random 100 < chance-of-congregating [tt ]]# _) H" {. R) P3 I0 m+ g6 U
ask turtles [ if energy = 0 [die ]]
A( k, l( E/ s& H+ I% E end; Y& @, B3 j8 O
9 Q9 w# L+ h9 m; O6 b
to tt
/ M0 x d3 G3 J! p6 _ask patches [set pcolor gray ]4 ?6 n8 |/ P; o" N0 V
ask turtles [set energy energy - 1]
+ |0 k. N3 Q* R2 L+ W5 u+ Jend
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发表于 2008-4-8 10:49:43
楼主
