请问：
2 k0 w& E4 i5 l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？
% X0 s9 l \' M& `) H6 c$ |8 W- e! C, L: j6 f
6 ^) q" v% z! C3 v
turtles-own [ energy ]
# h% e: g+ D- Z% X2 d' ]to setup
" K7 Q% ~* M% s( p, j9 ~clear-all2 M2 I/ W% T: o; M; c
set-default-shape turtles "square"0 K+ S c$ A2 T+ _6 F0 A! Q
crt nutrition6 m2 r }3 L, C( c* V6 v
ask turtles[
! t* k$ N, ~% \8 Y4 R6 h/ D: [' [ set color white
6 T0 ]+ E& i' U, T setxy random-pxcor random-pycor], N: Z8 q& Z8 t0 K7 U. u) O* N$ T
9 c2 H' s$ P$ g* T l6 g* f
ask n-of microbes-initialization patches
% Q( K+ m# o# P2 m6 q0 P) Q [ set pcolor green]( f+ D0 m! b; K9 }" g: d# g
ask turtles [set energy 1]
6 Q4 J7 y' M' L0 @3 J, {+ Jend
4 A9 C. T( W% a3 S8 L2 t: o' R& C5 S0 f. W; L$ l, _
to go
* U; q8 G6 E) x' b; M1 {. d% e ask turtles [set heading 90 * random 4 fd 1]
% ~" z# I( [. v6 Z; \) n ask patches with [ any? turtles-here]/ L( @7 }3 P& K- i/ @) a
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
4 Y( D" l. T' S6 C2 \% r' Z' T ask turtles [ if energy = 0 [die ]]
. `. S5 e& E0 ]6 J9 z end
# x' W& O) c9 Z; w2 [3 y5 h- N& |. k6 |* B2 E/ C
to tt
; A3 j! x+ _% v; X* X/ g: i" eask patches [set pcolor gray ]+ j8 r" G K' i: u6 q& g& t
ask turtles [set energy energy - 1]* N* P* T4 W/ S ]( v, O0 D$ a
end" _$ H `3 U b% W" d
0 ~: `5 g/ U, O! Q1 o9 S/ o. Y |
发表于 2008-4-8 10:49:43
楼主
