请问：
% U: E- e: x8 ~4 b/ k: W: w' T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？ |. t, }+ t2 w& L' l# O
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3 Z8 e, l7 f6 U( V B0 s6 Wturtles-own [ energy ]
+ p! Q/ ]3 I4 D: k! J. h+ Pto setup
! u( b: P; W0 d: L; Bclear-all" G+ V; J4 }7 G: o, {& t' e1 ~
set-default-shape turtles "square"1 L8 K7 e5 u8 H2 i0 J7 ^9 Z; _1 o
crt nutrition2 U5 K* J V7 \3 w% j! s
ask turtles[
+ ^/ J' s( [/ P! q) D/ d set color white
& |' P# ?- }% I) \ setxy random-pxcor random-pycor]6 I7 y7 S* T9 Q t/ p0 |
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ask n-of microbes-initialization patches
3 O* f; ?9 K+ Q [ set pcolor green]: z# k( M4 Q! d9 i+ ]3 c- m& I
ask turtles [set energy 1]' N! r4 {4 }- m8 b
end
: W. p0 {$ u3 D: O" C" b: K& U3 u+ j" u+ @& \' h% ?
to go. ?$ X6 _4 E- T. ^) n& M
ask turtles [set heading 90 * random 4 fd 1]
- x* I1 }) ]9 m) \2 o. V ask patches with [ any? turtles-here]
# z3 w8 ?% n5 D0 u6 } [ if pcolor = green and random 100 < chance-of-congregating [tt ]]8 K. P& L- I; B/ U
ask turtles [ if energy = 0 [die ]]
3 k- d7 e9 W0 @' s* U0 i7 ~6 m end
. |- z- p) Y- ?8 l) q- }' w4 [! |+ d. u
to tt
& z7 T0 Y( O- y: i, d6 gask patches [set pcolor gray ]
( |# J) U- `6 w6 M! N! Aask turtles [set energy energy - 1]# Q1 s) D# J% t6 G8 i. X/ _
end5 O( i3 K n3 Q' I( u, x; u
/ K) ]& u. i3 i$ _ |
发表于 2008-4-8 10:49:43
楼主
