请问：
1 g, c# c& F8 e- A; b! I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？* P1 z3 G r/ k# a3 j
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# i# C. V- d" z* N6 ?+ B9 J0 [ wturtles-own [ energy ]
# l- V6 m, N; i$ F9 n1 Oto setup1 Y- Y: Z! R N7 q% {7 W/ J" U( ^- i
clear-all
& G4 i. O* m% p7 kset-default-shape turtles "square"
2 g% J8 z8 j3 ^& F" D. G5 Qcrt nutrition
8 t1 K' b9 F% L ^6 s, ^* Q# X" ~ask turtles[
1 c0 R, d) E5 z" S* A1 ~; G/ _ set color white
Y- d1 P" T5 Z8 e8 ^) @ setxy random-pxcor random-pycor]
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) D K0 a4 B" |& r" eask n-of microbes-initialization patches
- u) n% b5 k. \* q2 f9 x5 | [ set pcolor green]
( D8 {% X+ A7 G" ?" q' X ask turtles [set energy 1]; E0 ^/ T) Z6 @; P8 y+ I& j1 `
end
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3 N& Q4 t0 \% |+ [2 a+ qto go
: T* o+ h3 g0 j! E* w# F" s( @ ask turtles [set heading 90 * random 4 fd 1]
/ v1 c8 Z; e3 I% n2 A: z ask patches with [ any? turtles-here]
1 d d8 D; z/ T [ if pcolor = green and random 100 < chance-of-congregating [tt ]]
4 B5 ^# M+ m6 y# A" s) t, o% J ask turtles [ if energy = 0 [die ]]
9 _7 [" X' l, p( N. t# W end
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: v9 Y+ l M' J0 o: G: [& Xto tt
: z, G) j6 f( R; H* }" m% L& v6 I- Fask patches [set pcolor gray ]
' C3 d8 u7 \" W c0 ?ask turtles [set energy energy - 1]
1 ]9 ]/ O: d( T$ j, wend
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发表于 2008-4-8 10:49:43
楼主
