请问：
: F4 s3 k1 P5 \- [( Q6 Z% U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 ]4 p* a- e2 f9 d3 W
to setup+ g# b$ r$ N% R
clear-all( b. j% ^: z; T, W
set-default-shape turtles "square"
+ n8 N/ X2 ^5 L+ icrt nutrition
2 F. ^; s7 H' q/ Q8 D: Jask turtles[$ K2 C1 q! e1 Z0 ^+ Z: L
set color white
8 d3 g' ^! A& `6 d. i$ k setxy random-pxcor random-pycor]1 V, ?: }) I# ~8 y( x3 S- ~
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ask n-of microbes-initialization patches
# b# R4 X) T! j' u$ L3 T. ^- H6 J l [ set pcolor green]
' L5 H, S5 M G+ H4 j2 T3 I ask turtles [set energy 1]1 v; \8 U# h5 f$ `. m8 H3 J! d% ]
end
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to go+ K4 ?3 i# b( a/ d
ask turtles [set heading 90 * random 4 fd 1]6 ^- z6 T" s5 |9 s- G7 B8 @
ask patches with [ any? turtles-here]
$ R' D4 L1 J" S9 }% H/ J) D' U8 T [ if pcolor = green and random 100 < chance-of-congregating [tt ]]1 c* n. {" k0 [8 V4 P! F& P4 f
ask turtles [ if energy = 0 [die ]]
. S$ S2 D; a8 P, C0 T) t& ]7 U end
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to tt# n8 {3 y3 ?6 x' D( ]% L% a5 }# I
ask patches [set pcolor gray ]# P. s) _* M1 n
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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