请问：, y. }% r) e9 p; F# x1 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？% [) U' h5 m( b
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turtles-own [ energy ]
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clear-all
3 T+ u* ^5 ]9 u1 C2 L/ Mset-default-shape turtles "square"
1 {8 m; ?9 Z5 p2 f' r; @! Gcrt nutrition
l6 e; E0 s; _0 ^1 ?# W% fask turtles[
# ?5 w3 ^6 [4 x: e) \2 v( Q set color white
! F2 `- U1 h- Q8 A$ E setxy random-pxcor random-pycor] P+ P% v( F4 \# j% |1 ? l
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ask n-of microbes-initialization patches) }3 q6 }; t& g1 n% y6 t ^5 {( e
[ set pcolor green]
' Y' p5 l; j* G$ G: v: @" G/ M ask turtles [set energy 1]: c0 v- ?( B& |3 L$ X8 g' k
end
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to go5 j, J, g6 l( x K; l- v
ask turtles [set heading 90 * random 4 fd 1]
( u: U2 c# K: U; f1 { ask patches with [ any? turtles-here]
$ ]* u0 ?& _9 S, b- R1 `; N- x [ if pcolor = green and random 100 < chance-of-congregating [tt ]]8 S+ ?3 l" Q; o: l3 n% F- h
ask turtles [ if energy = 0 [die ]] e) X' G5 V3 \2 |- X
end6 _$ N) ^. A/ f7 W, ^5 X
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ask patches [set pcolor gray ] ^6 l, p) j5 y' `+ Y; k6 ^3 C0 j* m" b
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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