请问： R& X. U( P0 K# }
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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! v1 x7 H7 S( h' b+ u4 |turtles-own [ energy ]
# }* J6 u- m0 \, A. eto setup
4 S+ e" ~+ W$ `clear-all4 K ]. `. }: W( T# a7 w, d0 k
set-default-shape turtles "square"
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; \$ R# v2 f5 w- @+ Gask turtles[
; n! N# Q: K; b6 `' M set color white
" C0 {3 U, O! m6 L: q [; l setxy random-pxcor random-pycor]; J9 k0 C! @3 D& }. l: s; y9 p& h1 h
/ S0 b) _% A& Aask n-of microbes-initialization patches0 o4 V& C8 T+ W* h; l7 \1 @! x6 X
[ set pcolor green]
2 k4 M) u Q. `- C+ |6 V4 K ask turtles [set energy 1]
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to go, K/ C8 i; o6 F2 N5 y
ask turtles [set heading 90 * random 4 fd 1]% k x% M ], t& }3 s6 t
ask patches with [ any? turtles-here]- _% `( x2 e' c" Z: @$ K
[ if pcolor = green and random 100 < chance-of-congregating [tt ]] w( S9 j. l, B. d
ask turtles [ if energy = 0 [die ]]
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ask patches [set pcolor gray ]
/ Z' A" x; B; _5 @/ r& M" ~ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
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