请问：; D9 D& [ e7 A. @
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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6 x) U$ h- X- _+ c& |; }' G6 B7 {* W. Jturtles-own [ energy ]
% N) O8 r. h- V9 t# X* k. ?to setup
- \; s3 v+ V8 R# zclear-all
) \4 C! Z5 V' f vset-default-shape turtles "square"3 V0 h& r9 U7 `4 t
crt nutrition
2 [" M1 ~" P& Xask turtles[
. \. Y5 q+ U4 y$ W. ~! L2 F set color white: ?& V5 G' ^; M5 Y% R {
setxy random-pxcor random-pycor], m- E2 c& g5 |( ]0 p
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ask n-of microbes-initialization patches. b- T! U3 V5 D
[ set pcolor green]2 j, N4 m1 r! _- [5 t
ask turtles [set energy 1]
* s) O0 S: ?6 r+ }; S: s: kend
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to go
S( k# {) h0 j. S4 o ask turtles [set heading 90 * random 4 fd 1]6 t E4 t% d# i
ask patches with [ any? turtles-here]
+ R- h2 B* J) e. X$ S [ if pcolor = green and random 100 < chance-of-congregating [tt ]]* j" x, c1 Y) c$ }/ h. p
ask turtles [ if energy = 0 [die ]]
: f3 Z9 H( @& u! f end
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to tt" r" o2 h. F m: J/ i G6 H
ask patches [set pcolor gray ]
+ `2 j& @$ `8 V& sask turtles [set energy energy - 1]8 v9 C- \: ?/ M8 U, N9 c7 s
end
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发表于 2008-4-8 10:49:43
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