请问：
B1 l; g: A3 h& p7 W _) ~5 I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？9 H7 m9 L, _+ D! O h6 S
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, u4 u* l! x8 r1 @' O6 }6 Z7 zturtles-own [ energy ]
, Y: k7 p1 [* E' sto setup
6 g$ i, ?0 S) Y! E. b# jclear-all: d% n8 L, d0 x/ H& z( L* i! ^
set-default-shape turtles "square"
% {* X7 s% Q1 ~2 O! I- Vcrt nutrition
0 \$ m0 p. A' L' z7 x+ s( rask turtles[
" y H: f/ m" h% J/ C set color white
& g w/ y+ M, Y* K setxy random-pxcor random-pycor]
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4 [1 m' [1 i9 O. H- Bask n-of microbes-initialization patches
! z9 s! \- a9 g+ g, H J. T2 {7 J# b1 K [ set pcolor green]# o3 I/ T b" P! E g K
ask turtles [set energy 1]
4 b# @% ]& L! Q8 w# Xend
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to go
9 e* w& J" D1 O- x8 K7 o5 r ask turtles [set heading 90 * random 4 fd 1]6 m8 d% B' K' k5 b
ask patches with [ any? turtles-here]+ X% h3 D) e3 C/ _; \
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
* w* a+ v5 U4 z& f) ? ask turtles [ if energy = 0 [die ]], I9 v9 e ]) X- C; u+ J d
end
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to tt( V' H( Z7 N: f
ask patches [set pcolor gray ]
P$ {) i4 U& A# Bask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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