请问：& T+ a: ]( e: 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？/ C8 j; E0 e; W" x& F: d$ Y
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turtles-own [ energy ]
- G, C& x. O t4 J: a+ eto setup
: g% `5 z- t$ b0 y) N9 L- Rclear-all
' c# S. `' B' r Q2 i# h# vset-default-shape turtles "square"
4 @0 d$ ^+ [' g- M+ ?crt nutrition" g/ [/ Z0 b' k: F0 T. ]
ask turtles[
& R# {( V3 g6 W& P+ A( Q set color white; {3 ^! Z3 U3 C3 X. J5 a
setxy random-pxcor random-pycor]
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6 G4 n! K, G) x6 `: n) Uask n-of microbes-initialization patches
+ |! S9 i3 a: _3 Y" ^- Y; I; p [ set pcolor green]8 J) U8 H4 X. A u* {! y# I
ask turtles [set energy 1]
0 @, R6 U- p" Q& _, _1 L/ ~2 ~! Yend
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: m& j' b# i( [" Qto go
0 j# p- ?4 S& x/ f) b, j. K+ P$ T( Z. N ask turtles [set heading 90 * random 4 fd 1]+ A3 @1 J0 ~8 H d$ ?
ask patches with [ any? turtles-here]
+ f, w/ e: E! @7 B/ }" i [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
s/ [" e1 l. X N) E* Y% s ask turtles [ if energy = 0 [die ]]8 `3 H& ?" ^# W5 U0 z1 `' W
end
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# I, G5 t* w! d3 ]4 wto tt) o$ P+ |) ^2 g. \
ask patches [set pcolor gray ]
( r0 [+ x5 m% g- Hask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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