请问：
& M Z6 e5 j; X- \7 S9 A8 x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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( W! T; U s" g/ _. ?1 `turtles-own [ energy ]/ ]. ?, j9 e: o& H8 Y3 C+ S
to setup: B' L& K7 B4 Z
clear-all; \0 z$ J4 |8 v6 c
set-default-shape turtles "square"
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ask turtles[' L6 |* C$ P/ `# a/ E' @8 Y
set color white
7 W3 d5 v( F' Z" q" e4 W setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches
. x4 w6 d* }: ^5 o [ set pcolor green]) B4 x2 S7 v" z% l
ask turtles [set energy 1]& b: L) i$ O& O! C# N
end
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% l7 @$ s8 m, x% S( ?) zto go
) E, }& D# m0 i; n# `# `* e$ D ask turtles [set heading 90 * random 4 fd 1], D3 E. x4 [5 M
ask patches with [ any? turtles-here]
; w! y* N$ b* M' } [ if pcolor = green and random 100 < chance-of-congregating [tt ]], m4 `! {% z* L2 P9 h% y( n. i
ask turtles [ if energy = 0 [die ]]
& `1 [5 g' f/ P1 J# d$ l' _ end
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ask patches [set pcolor gray ]
" h/ ?+ Q9 b: i7 ]. D4 eask turtles [set energy energy - 1]
: [4 y! Q5 V0 z* o/ jend
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发表于 2008-4-8 10:49:43
楼主
