请问：% b; U2 D" z4 x
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？4 y" H+ K: L4 |
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) _# f5 d b& L/ r6 y7 uturtles-own [ energy ]
7 s/ F* S: T& ?! qto setup* n+ G; L% P9 E4 M* ~/ @
clear-all$ c* F/ f" }* k
set-default-shape turtles "square"
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ask turtles[
% C1 n+ e+ ~( p" Q( K set color white
/ I# C, \1 }$ i setxy random-pxcor random-pycor]2 ?$ f8 x M+ E& T
# h; e: b" W; I1 r9 }) `ask n-of microbes-initialization patches
1 T+ q+ x |2 M1 L [ set pcolor green]/ ~/ d/ i3 y' @0 C6 m5 A* o: K5 u
ask turtles [set energy 1]
) \2 u' @: m6 Xend
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4 a8 [( `! \3 Y- y5 Kto go( i) I- K1 H; D7 D+ C
ask turtles [set heading 90 * random 4 fd 1]
[4 Z7 O0 ^: w# p4 E% P ask patches with [ any? turtles-here]# m7 s( c, R6 }3 N
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
4 z7 i- z, H+ n. j ask turtles [ if energy = 0 [die ]]
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to tt5 S0 V, k: @7 [* w8 ]
ask patches [set pcolor gray ]
2 I4 K4 l( @9 F$ H2 K* Xask turtles [set energy energy - 1]
6 a( {& W. } g' A0 \2 o vend
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发表于 2008-4-8 10:49:43
楼主
