请问：
. t6 j- T t1 m& F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 ]: k, n) g" C: b& J. z: u, \' B
to setup6 `( j) }; h0 }0 G- q- @
clear-all, g. s* F' b. k( O9 O5 j" r" G( w
set-default-shape turtles "square"
- K# [- Z2 w8 D5 C3 d4 O- qcrt nutrition
+ P+ t7 w/ h2 u+ l3 `; ^ask turtles[1 W; l0 {3 Z1 E' l& V: ?
set color white" Q% a' v/ w7 f; x/ g$ N% S" A
setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches5 N8 I/ a4 A" h. A& d- u) U# `
[ set pcolor green]
) p0 J* X" a/ [) |8 t0 `! P, ? ask turtles [set energy 1]
+ j6 P; j0 i; Bend6 |" H5 {& M6 }* ]: L
3 B$ C+ W D( p& E1 E$ P( bto go
7 e+ i/ r; K! T3 k ask turtles [set heading 90 * random 4 fd 1]& E N& U b4 N) n" F9 d
ask patches with [ any? turtles-here]
" j; h$ R6 v h3 i [ if pcolor = green and random 100 < chance-of-congregating [tt ]]" l5 k1 C/ X+ @' Y6 q. g
ask turtles [ if energy = 0 [die ]]
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to tt
[, H& m* \; Nask patches [set pcolor gray ]# @+ E* h0 U% {/ y- M4 h m
ask turtles [set energy energy - 1]
9 K, \3 n; a3 t6 Z4 [7 jend
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发表于 2008-4-8 10:49:43
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