我编的程序如下turtles-own [energy]) _, A0 O* y4 O2 a
to setup+ ~6 S" c0 D' |" j% N
clear-all/ E" o5 Z# ~, V1 r7 z9 T* H
setup-patches: c" c8 }6 @' s- d" \
create-turtles 1009 X& Z) D2 g* {+ S
do-plots4 W& \, |! \+ h1 @- w3 B
ask turtles [ setxy random-xcor random-ycor ]( z( N6 H% A* [3 ]! d$ [
end
* {3 d8 [7 W) R$ Nto go/ f" z8 J" w( x1 z3 G0 b
move-turtles* U+ d, s1 }" f4 m* W, O# o
eat-grass9 S0 P1 i. Y% c% l& Q% t" v" Z* ?
reproduce4 Y& b. ?* `& h# U5 \) |( y8 C
check-death& s, F& d% Q6 N' g0 r( P8 ^( L0 O
regrow-grass
& F5 A! s) G- d do-plots' e9 J2 |+ V7 ]8 O
end
4 X" h0 i+ u* H3 |to move-turtles3 ]! ^" ~5 G$ h2 G' M6 R ?, H
ask turtles [
; g# U2 u! x+ t; E% X- f; R right random 360
4 q% F( o2 @ c5 P3 P% A- v0 a1 m' l forward 1$ y7 R& r$ P9 W) |2 T. K: k, P
set energy energy - 1
, v' x# |9 o" ~4 O2 h9 _+ y1 ^6 E ]8 T/ j R4 X# l% K2 o( r
end
7 s7 S2 R! D; zto setup-patches
$ _# S- L% Q* @# J3 P C ask patches [ set pcolor green ]: g6 @) E$ }6 p- K
end
. x2 y2 M, b: E7 ]& kto setup-turtles4 d, ^+ @ s! B6 l+ L5 U5 f1 V( L
create-turtles 100: h" w; f$ p9 X
ask turtles [ setxy random-xcor random-ycor ]! s2 p; K/ ~1 X( L) c& x. z
end. N0 q5 {+ g4 v
to eat-grass
4 |+ N; @5 G. R' x ask turtles [5 C0 ]% @' k- O
if pcolor = green [- a& r' \2 h: Y, o
set pcolor black
7 h4 L# F6 a3 a( L set energy (energy + 10)
: Z4 |1 n( Z9 R ]8 c/ [ e6 u1 D" q7 i
ifelse show-energy?
- b* Q( v9 f/ q. I [ set label energy ]
+ k9 O2 J# `1 H$ ]! e [ set label "" ]& h7 _/ [4 v7 R9 \ X
]- R: p* g: X& m* l7 d
end* Z. A1 F8 S1 G, R+ R' O
to reproduce( x) D! Q& w s
ask turtles [
. G) {3 u4 U \1 a if energy > 50 [
: H; m# C: j1 w9 n set energy energy - 50" R6 h) W; F, p9 ?! K1 u. d
hatch 1 [ set energy 50 ]# a4 I$ }" c. Y& B8 X
]) ^ p# _5 ^5 ]- C
]1 W. E5 i$ p6 p
end
+ d7 [8 ?8 V6 y; ]: i* K, V; Yto check-death. G+ R0 |; G3 ?% R
ask turtles [" Z2 c( Y; [/ {& W8 c
if energy <= 0 [ die ]0 `/ O& l5 _$ t3 _
]
- F* i! `" o! E; b- U: wend
/ k! e$ Q; N" e( wto regrow-grass+ O9 N8 ?/ o& @1 M3 l
ask patches [. i( x/ U& Y6 L3 L$ Y T0 p
if random 100 < 3 [ set pcolor green ], h4 n$ F+ H% N7 ^# }" I6 V
]7 u! G5 S) Y/ o9 z
end
4 n7 k d& M, Z& ?" B" O- } @5 zto do-plots5 s _- e. y2 \8 L X
set-current-plot "Totals"
& w( {& k1 x! \* I; v1 Z+ C set-current-plot-pen "turtles"- w- J! Y' |/ {( f3 ?! t+ l
plot count turtles- C0 m# P8 ~8 `# r' `
set-current-plot-pen "grass"
* G' G% \5 t2 R plot count patches with [pcolor = green]
# j' q1 B5 g2 w! Z. tend- F& j1 @* `6 {
可是运行时提示no such plot: "Totals"
) }) J! B9 B+ D( ]: W perror while observer running SET-CURRENT-PLOT' h' p: U: G7 n& f- G
called by procedure DO-PLOTS
9 V1 `9 H# g; v0 x called by procedure SETUP0 Y- W" E1 Q7 E; N, F
called by 按钮 'setup', V4 [+ K0 W- @3 u7 j4 C
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
