请问：
# b& V8 b/ q# a2 Q8 b2 Y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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! y9 Y b' T7 B. k% }+ eturtles-own [ energy ]
% X p' V; F: a6 v8 P: a6 z) J: _to setup
0 w/ b" ~: i W' ] _; Eclear-all
6 D8 p9 c* _. B2 X- xset-default-shape turtles "square"
& S0 o H) U0 W+ K# w( Vcrt nutrition
( |1 o% X& T" g$ b, X& Wask turtles[
: x2 U3 S- g! S7 ?0 q9 F7 ], H set color white
, L M" x/ z5 u& P setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches+ @4 T* K; G; F) Q; F6 n5 {
[ set pcolor green]5 m+ s. E7 m- c6 J j- f+ \
ask turtles [set energy 1]: Y6 _0 l3 \1 ^# @3 B7 Z/ g
end
( k2 y5 n9 R& _: ~: G# d: |0 l" T) S3 |0 w
to go- t' R' [6 U4 ^( D& m4 f2 }. O
ask turtles [set heading 90 * random 4 fd 1]
' Z- f" C- b; N9 T- V2 d$ D( R. X ask patches with [ any? turtles-here]
. N! G7 I' _9 ~% ^( U+ d [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
% m9 f2 C' W2 }0 t ask turtles [ if energy = 0 [die ]]
# Y0 ^! y |' W' K2 H0 R" R* r end
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0 G; Q# }9 S) A* l8 ~- Tto tt1 ~: ^& ~0 j" P1 P
ask patches [set pcolor gray ]7 D7 _# p9 \' L9 M+ o3 I2 P* v& p
ask turtles [set energy energy - 1]( ]6 {$ l" f; h0 R Z
end* l5 k, i1 o: m+ i3 U Y
6 X9 x _$ B% \2 T t
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发表于 2008-4-8 10:49:43
楼主
