请问：, `# I9 B9 }# Q+ }! o T3 [
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 g" O+ `# Y3 y" Z2 X5 @
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( r" }! ]$ w" s4 ]2 {+ P5 Yturtles-own [ energy ]
/ q& y, r3 N1 {) A3 C4 [% s+ Jto setup6 ^2 t+ s |, U+ A/ a4 F6 B
clear-all% S; U( Y" n7 @. [% b
set-default-shape turtles "square"; T* C" m! c0 c. E; d$ r
crt nutrition! t1 V. F! w" v# N$ p; E
ask turtles[4 m# g) D5 o8 c* P- z, D9 f0 { I; {
set color white
4 A8 |: R$ y9 P2 s% j& W setxy random-pxcor random-pycor]
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ask n-of microbes-initialization patches
$ @. p2 N( i5 A6 U( w9 M [ set pcolor green]
; I0 `0 l" a. Y ask turtles [set energy 1]
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to go
2 h \6 i9 s J ask turtles [set heading 90 * random 4 fd 1]$ i" V: A( u" j2 @5 [) R9 K. ]. X) y9 m+ O
ask patches with [ any? turtles-here]# V m1 Y3 M0 ?. E4 i3 Y
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]8 t5 ~3 p @( V0 I2 l
ask turtles [ if energy = 0 [die ]]
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to tt3 ?0 C/ `& h5 {* d+ {, E. z
ask patches [set pcolor gray ]) B4 ~" E. E( y
ask turtles [set energy energy - 1]
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发表于 2008-4-8 10:49:43
楼主
