请问：+ L4 T2 y) D$ f, g6 z
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？2 Y) _4 W( B8 t. Q+ a
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turtles-own [ energy ]
; S9 A2 R$ b8 tto setup: Z9 r9 c) c: h) o% ~2 `, E( @
clear-all) t _1 D: q k# v; U l# Z/ Z4 N* ~
set-default-shape turtles "square"& ?, W3 a; ^% c; v* g8 |
crt nutrition2 _, ^4 z" e% ^: _, v. y9 b
ask turtles[
, j1 E8 M# `7 Q0 e set color white2 e4 i0 U. F) \! {! D
setxy random-pxcor random-pycor]
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/ u0 d: B% M& E4 S6 [/ Dask n-of microbes-initialization patches9 h) z% @, l0 e g9 V
[ set pcolor green]1 ^7 w; W t' T6 i& [- T6 m
ask turtles [set energy 1]
. i8 y) q) u' Y' nend7 f: }- _% l6 q9 m" B- _
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to go
0 n9 C/ C/ w5 z" \5 m4 O ask turtles [set heading 90 * random 4 fd 1]1 g" D2 x8 w$ i( Y! }6 L! U
ask patches with [ any? turtles-here]
. o% o$ p: u% i+ K, J1 l& V$ m [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
) s2 r! a" k) H1 U$ i3 _2 a ask turtles [ if energy = 0 [die ]]
' L# l3 Q! B% b+ M end
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ask patches [set pcolor gray ]+ M0 L& {6 n& @
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
楼主
