请问：
8 X/ k! j9 i! R& d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？- k+ n1 V7 _, `% ]) Y0 e
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9 {0 S! G( y" q: X! Wturtles-own [ energy ]
7 Q7 `" V- b' C V$ ?& Rto setup( w. R7 P m* E
clear-all
" O0 r1 H5 K1 c9 e. yset-default-shape turtles "square"" ^2 u( e5 t# d# e6 }
crt nutrition# W% D0 u5 {, O3 _% C
ask turtles[0 S+ z! x3 Y! c, V5 V e' ]
set color white4 E7 o9 M Y; ?7 ^+ w3 h
setxy random-pxcor random-pycor]9 i* y& ^/ p& \& u1 `
6 a( w" o d1 X/ W& Aask n-of microbes-initialization patches
& P5 g( G# H, |& |; F- m8 n7 A' I [ set pcolor green]
6 r' n7 Q* C1 H' x ask turtles [set energy 1]
& D) x$ q+ E/ g! z* z/ ]" `9 eend" b, U0 x& T0 z. m8 w
7 Q ?" l1 h" O2 J: K% P
to go! ~9 q/ l% P& K! J- g. W, f
ask turtles [set heading 90 * random 4 fd 1]- a# Y1 e" Z0 Z" ?6 |
ask patches with [ any? turtles-here]
# ?' g3 v6 m- g5 L' C [ if pcolor = green and random 100 < chance-of-congregating [tt ]], x: |: [6 x) {' T {
ask turtles [ if energy = 0 [die ]]/ ~1 t B5 a m3 o4 C
end! _& L1 u4 V/ o7 G6 T1 |* v7 @6 W
2 |8 X/ r- ?9 @' V vto tt
8 H/ x) |0 I( p3 I. A I. [ask patches [set pcolor gray ]
; L' `3 I$ m7 _ T9 dask turtles [set energy energy - 1]
5 `/ C5 _% ^6 ~* h- H- }9 {end; o7 n6 f x: [# B" F' ^% r
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发表于 2008-4-8 10:49:43
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