请问：
( C2 h+ k1 V# C/ W# g2 D: u' 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？4 i5 I: S9 v7 C" k, t0 ?1 L- D h
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6 H: e2 G1 U( M4 sturtles-own [ energy ]
& q% e* F- \- Z& lto setup
G8 {' S# o& q/ Iclear-all
: Z# l" e. p0 t) A; ?- Dset-default-shape turtles "square"0 ?" Q( c' K- g/ M
crt nutrition$ z8 q$ p4 y. l8 |/ m |+ `
ask turtles[7 b! M: W, O! T% E8 B! T* r
set color white1 |/ }! j1 e$ y& q
setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches9 D+ \2 g B, U; \, W
[ set pcolor green]& A( [, @2 k2 y4 e5 {+ y
ask turtles [set energy 1]% o8 n+ I+ W( A. a/ M$ |* \
end
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ask turtles [set heading 90 * random 4 fd 1]* S) X3 w( X& U. \+ T
ask patches with [ any? turtles-here]% q8 M6 g/ Y$ ]7 c
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]
2 W0 h9 Z% z( B1 ~ ask turtles [ if energy = 0 [die ]]: B6 Q& K( k& Z' C0 W- R
end$ j1 @. q4 H2 T+ G
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ask patches [set pcolor gray ]) F' ^* F7 Y% _6 P; h& y
ask turtles [set energy energy - 1]6 c2 Y' `! [& M) |" ^' v
end
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发表于 2008-4-8 10:49:43
楼主
