请问：( `6 N) p; q4 b3 L- l; 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？( w3 Q1 `# s* t& s
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turtles-own [ energy ]$ B1 c- z( X- d9 c: A; W" E1 D+ f
to setup
0 r' w: L2 w: ?9 T/ n1 wclear-all
1 _9 v6 K5 m$ C: K# v( _; Sset-default-shape turtles "square". J, ~4 w6 @; X, e* a
crt nutrition7 h# ^3 K Z# [* t( E% y) X( P' F( E
ask turtles[, A) I$ c. u. f9 U2 h; C
set color white0 Y; A+ ]& A5 E" k
setxy random-pxcor random-pycor]7 b( ~! l) M2 L/ W
- g2 }3 ?1 M5 |ask n-of microbes-initialization patches
4 I2 }4 c0 `2 R5 q! N; ~& ] [ set pcolor green]
5 n7 T3 u% S2 p& n& T9 u( ]* g ask turtles [set energy 1]% g4 e# Q( u1 }) X! V
end7 L0 n8 _1 g! T$ _) ?4 M
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to go
$ }, U- T' n) ?2 N* N+ V ask turtles [set heading 90 * random 4 fd 1]
' S' B/ O; m$ T7 q% \3 X* f ask patches with [ any? turtles-here]/ o, N) X m& T" T1 k% u, _
[ if pcolor = green and random 100 < chance-of-congregating [tt ]]: m" z' q: ^0 R
ask turtles [ if energy = 0 [die ]]
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to tt$ X6 r/ x" {9 G% m8 b
ask patches [set pcolor gray ]4 j2 {5 r, P' r3 M* ]2 n/ F( g7 I
ask turtles [set energy energy - 1]4 L: v2 L2 _* u" m9 o
end
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发表于 2008-4-8 10:49:43
楼主
