请问：: k c% a& f! P! b9 ^
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？
& F* G5 f) \5 A7 v4 w0 \% u* T: G U2 a
4 R# G0 h5 B8 G7 v3 [$ x
turtles-own [ energy ]
& l" I( y* Y7 \% X7 U" ?to setup
9 p3 U6 D. W2 V7 rclear-all/ ]- p5 l3 O1 G2 s' ?/ Z
set-default-shape turtles "square"
7 p) K) o1 F6 n; Ncrt nutrition/ U5 C& @: A* C* M% L2 _
ask turtles[# G% \( [/ Z/ L, \: s
set color white
/ }% M8 X% b( B8 F1 @ setxy random-pxcor random-pycor]
. Z3 ?9 l% G# c8 \3 Z6 J8 U) d
( E: p, H; l* h* G* W5 ` W% O9 Fask n-of microbes-initialization patches5 e1 o% L3 Y3 u7 |+ d, G
[ set pcolor green]/ Q& m O+ X0 ?
ask turtles [set energy 1]( h* t" r% K, j8 z
end: \# B" m( Z* L4 t; O3 m+ T
: \& s9 z% U. S6 M1 a3 `
to go9 p9 ]7 x9 A7 v* C- Q
ask turtles [set heading 90 * random 4 fd 1]7 V( ~' D9 Y" S; E7 @+ F
ask patches with [ any? turtles-here]
, {5 G; \4 [; D+ z; E+ W7 [ [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
: T) J; A( y- A2 m" L- m- V N ask turtles [ if energy = 0 [die ]]
) k& d% i+ S6 Y+ u S6 F3 @ end
; y( [) Z" ?# |8 ~
( m6 ~* Z1 r1 E- E4 `3 m2 Vto tt0 n# m# N& Q9 @; j- D
ask patches [set pcolor gray ]) f- q. d) p1 f8 x" }* S) N" s
ask turtles [set energy energy - 1]
: s+ n3 h, M; Q8 jend8 Y9 k1 K. l; o6 M6 D8 i% q
4 G5 ?$ c2 k6 G
|
发表于 2008-4-8 10:49:43
楼主
