请问：1 o3 b* |- r9 O6 C/ T% G6 @3 h v
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？5 K! t/ F/ y; y8 _
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turtles-own [ energy ]# Q0 ~) R% {2 s7 J' [
to setup, D9 x- L' c) S! d9 D6 B: I
clear-all
: J t4 y b, e/ G; X3 rset-default-shape turtles "square"7 N* u( _2 w4 U# P
crt nutrition
# B3 r q( g! s: J W' dask turtles[' U0 S; _ a7 w5 l, U M8 \' O
set color white" E, S- J- j$ Z' Y4 [* o U
setxy random-pxcor random-pycor]
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: R! r( l R3 A% |4 Fask n-of microbes-initialization patches6 K: f3 ]7 F9 d$ g8 A: B7 |% K
[ set pcolor green]
4 s) D( Y# u7 d ask turtles [set energy 1]% S3 u$ S: [! C. b8 `' i
end
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; q- i. U% X g9 \ ^, dto go
y4 G* O+ T9 w5 W( O ask turtles [set heading 90 * random 4 fd 1]
# f# H3 y9 D! g ask patches with [ any? turtles-here]
2 t7 y6 i/ L7 R. ? [ if pcolor = green and random 100 < chance-of-congregating [tt ]]. ]! U- b5 |) M& q$ A; Z' ]
ask turtles [ if energy = 0 [die ]]4 ]2 a+ ~4 W8 t: ?/ D
end- `) d& T/ _2 j/ N
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to tt
- t4 x! S Q! s3 q, Gask patches [set pcolor gray ]5 b1 A% ]9 c3 i5 s! Y+ r- m
ask turtles [set energy energy - 1]2 l P+ s5 w) c' ]! a1 e/ q
end
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发表于 2008-4-8 10:49:43
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