请问：8 R, [# A. C" 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？5 A: e d' D" g7 D
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$ ~" _2 l! l6 k+ R7 g- ]8 i3 Iturtles-own [ energy ]
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clear-all
' |% j/ b6 ^2 Y! H6 B `set-default-shape turtles "square"
3 s) E& J5 f, P8 z/ k% lcrt nutrition
$ W2 A# z1 o N D* Q) F1 J+ Bask turtles[- m7 s' X; J9 [7 _' Y2 m1 _4 U# S
set color white
/ w) T$ q1 U% x; _( F5 ^ setxy random-pxcor random-pycor]% @( A, \: b0 g4 J. X l) j
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ask n-of microbes-initialization patches9 a2 p# K7 j$ A) y5 H8 ~6 K
[ set pcolor green], l! N2 k" z; v$ p& K& c }
ask turtles [set energy 1]
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# H# Y, ~6 r& k& O% k2 |% N6 k( |to go
( i$ B3 j2 K1 x4 [( x ask turtles [set heading 90 * random 4 fd 1]
% h! K( z8 i: m" J6 K ask patches with [ any? turtles-here]
* W+ Y& N, K; V* M [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
( b& z7 O! O4 e5 K. x& | ask turtles [ if energy = 0 [die ]]
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to tt
; Z5 g2 L! F% d8 N; zask patches [set pcolor gray ]
x' [6 s( o0 wask turtles [set energy energy - 1]0 U) L- T, s6 i1 M; |
end
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发表于 2008-4-8 10:49:43
楼主
