请问：
! P: Y* z2 \* a" `7 ^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？
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turtles-own [ energy ]3 {2 c% E. M7 j) a3 b1 y; c# l
to setup$ Q1 d* q4 i; { U L
clear-all U% J; `5 b/ e" o1 Q% v/ o
set-default-shape turtles "square"- P# N5 |% J7 `. M
crt nutrition, \8 n9 M* O0 _ U
ask turtles[
* V& ?' k. q+ t$ c4 } set color white) u9 g: O* x. Q: a' ^
setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches
2 b' \* D7 S5 l: A [ set pcolor green]) f' ]. g. M, j- V7 B3 M" t) l
ask turtles [set energy 1]8 [+ L3 y/ S7 |, U" W' B7 S
end- J7 V4 W; p3 n
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ask turtles [set heading 90 * random 4 fd 1]
8 Q, H* F; T( X2 P ask patches with [ any? turtles-here] W+ m) R$ Y1 Q0 }+ g0 V
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
7 {3 O9 U5 W0 I ask turtles [ if energy = 0 [die ]]' _7 Y H t* D( M2 S( I
end
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$ W! N b' r7 q* U5 l, `( I. zto tt
% Q$ ]5 X3 {2 ]6 w. U. k- M5 Xask patches [set pcolor gray ]" M+ `9 ]" r4 s+ J- w
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
楼主
