我编的程序如下turtles-own [energy]
0 l5 N0 g) _' J% A6 ^) Pto setup
, H1 h$ V, R: q8 l clear-all) ^. A$ r- J, B0 N0 ^ T/ @
setup-patches) x' _: ]/ }, o; |" ]) ~/ `
create-turtles 1007 |4 C* o* \* r, h
do-plots
2 |9 {2 ~0 T0 e+ y ask turtles [ setxy random-xcor random-ycor ]
; e! z5 Z) D0 a5 Z( Eend
- r1 Z6 b8 B# {/ s" A: kto go
5 _9 `* ?' E* p2 V* k move-turtles6 n& Y4 E" x0 d \4 ~+ y! ?. r7 m
eat-grass
* T1 ~9 P) ^5 \+ w' t! L reproduce
& [9 @& @* X& M; L8 G check-death
' t4 u0 }. q: f6 t; z regrow-grass
$ q3 ?3 A- }# j3 w' `( c# i- W3 ]4 L do-plots9 o* i! }+ u. B
end
" D3 x( \5 ?4 ?# Hto move-turtles
3 {, q; l4 i+ `+ s& N# N( n0 Y7 }8 K ask turtles [
* T1 D D+ K9 l/ \ E* z right random 360
* I t1 i9 x' K8 {; ^ forward 12 }+ \$ @, T1 w4 H3 l
set energy energy - 1& q0 p: h- I8 J! B; F
]
% d5 z9 e: K0 d: Eend2 s- L/ y5 L |9 s3 r6 c; `# k
to setup-patches
, H3 }7 m6 N' ^# m ask patches [ set pcolor green ]
8 i8 o* e: _ d9 I0 j3 Y* c$ ?' F1 Mend
; _4 v2 A7 j K" w4 j& Yto setup-turtles* x' w6 t' e* O7 \
create-turtles 100) D5 `% J. q7 I/ m1 [5 o
ask turtles [ setxy random-xcor random-ycor ]
7 Y) b% a5 ^0 s7 F2 Q, r8 uend
' L, S- ]) J' Z$ i& Lto eat-grass9 _" M, k( J# ~5 d
ask turtles [
, T! O2 x2 O7 w8 Z) x' Y" R9 P* b! l! a if pcolor = green [
) I5 |) l4 \! Z: \! N0 n0 U) S set pcolor black3 {& k, l) s4 c3 i$ \, r
set energy (energy + 10)& q/ J; [6 d% k
]
$ J( D* I( K' m# t& I+ }* T ifelse show-energy?$ R7 R) P! L' J
[ set label energy ]
' V2 a. T; [- K8 P8 r. ]+ i [ set label "" ]9 ]% ~. N" K3 G- u1 }: ?
]- t4 j- Y! l! M0 }8 g) k" C
end
' i; @: p+ V' J8 Q/ Oto reproduce" P" b4 I! n8 M
ask turtles [; t& n4 o0 j z
if energy > 50 [
6 p; ?9 N/ K) a set energy energy - 50
# v9 p: b0 F2 U. Z hatch 1 [ set energy 50 ]7 `& G3 I/ a: Z" \ c
]# W& J4 c0 C/ N3 ]$ ]1 q' A! z9 Q
]
& a% ~! L0 A. R L# Wend
5 T$ p* E8 \9 ?# V- j5 `to check-death
% X. ]0 m I9 H; q% k9 l( G ask turtles [
& Z: Z% ?! \; i& a" l4 w if energy <= 0 [ die ]/ [' d7 k) Y! n- t$ F
]! z0 y* R0 F: j$ U
end
/ |8 T1 Z* s3 X. ?) \to regrow-grass
' \% G# J' ^$ j; y5 l ask patches [5 ~6 J# M$ m5 G- e" K
if random 100 < 3 [ set pcolor green ]1 `) v$ {8 O# I" l5 q, X
]
0 r8 H; h! C0 h) F* h2 ?end) X. j i. B' ?# _0 E& I7 |7 v
to do-plots% B0 p" _7 x0 A
set-current-plot "Totals"$ W, k; Y8 F& R
set-current-plot-pen "turtles"$ z$ Z& G: b& [: _& X
plot count turtles. J5 i x# A+ N' T9 Y* R7 W6 G8 |9 @2 S
set-current-plot-pen "grass"
+ ^, R( ?; o7 m) s) ^0 Z) Q plot count patches with [pcolor = green]! G! Q/ E" `8 X- U. p8 d% a
end
$ w3 a- G( O0 y a- e可是运行时提示no such plot: "Totals"
6 g' p7 O0 ~ @1 }9 [' T3 Ierror while observer running SET-CURRENT-PLOT
8 G# E, Y- V9 I. Q4 o called by procedure DO-PLOTS
( i0 N) g* W& Y7 r called by procedure SETUP0 O) [! f7 c# y2 X1 |
called by 按钮 'setup'
1 {3 x6 ^4 B4 @8 {! g求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
