请问：
( K& k) ]" M2 _7 p( y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？: Y8 v H7 F3 A
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5 w1 m# |: g/ {% gturtles-own [ energy ]( k; v7 \$ Z2 C' X1 r% M
to setup7 w" N9 @/ Z# b' q
clear-all: {' e0 E. |9 B1 O' X
set-default-shape turtles "square"
+ k* t% M$ R- ucrt nutrition
. Z% m9 Z3 V2 Mask turtles[" F& \% }2 n, h% V0 K& d
set color white( K9 Z) X3 d0 L4 N' j' v
setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches- N" v4 l9 H1 w4 X+ N- u- b
[ set pcolor green]5 x$ V6 J* S) f, L- E/ `" W5 r2 p- P
ask turtles [set energy 1]
4 _; H9 W6 N4 K3 w6 O' J wend
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ask turtles [set heading 90 * random 4 fd 1]) K( Y5 _$ I+ y# o, Z8 G
ask patches with [ any? turtles-here]: a7 G6 I) q1 ` w3 K9 ~, [7 J) M
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
% ]8 e% b/ l& d" v$ e ask turtles [ if energy = 0 [die ]]
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to tt
5 l8 q9 g) j; i4 {) A, task patches [set pcolor gray ]
! k a' I: U. Xask turtles [set energy energy - 1]. s' l5 b6 g, A! d4 H) u+ t
end
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发表于 2008-4-8 10:49:43
楼主
