我编的程序如下turtles-own [energy]+ Y x8 m. s2 h. K9 G% T& P
to setup
0 X O! c& ~2 G/ y! s! `7 ]0 \* \ clear-all
3 u Y! [% ~+ X8 z {5 Q setup-patches8 c H: _- M" X% y" `
create-turtles 100
; O4 \6 p" o8 i& D do-plots/ q9 A# t8 \5 o
ask turtles [ setxy random-xcor random-ycor ]
9 x! n5 n) p2 [6 _4 ~end W3 u. k: o. ^: J: Q; f. {
to go
5 Y, F) n G! W) N% H- Z# F move-turtles
2 d2 \, ?4 @: g, ^ eat-grass- u8 c5 s1 w+ i2 U6 t, m
reproduce
+ s$ w d$ ~% ?" B* t, u check-death
8 b9 W, C- O/ R8 L" U# y regrow-grass
: ]: ~) E$ S+ @; b& d! s do-plots
- [/ w. d. y3 ?) l+ e* zend8 L$ R. N5 r3 m, w+ O D" S& Q
to move-turtles7 u8 `2 c0 G' A8 I2 g1 ^& X* \
ask turtles [
3 ~5 R; y* b/ D3 P: z9 ? right random 360
) ~6 F4 @! B& i9 n forward 1- j+ o! `, L+ f, i2 l1 E* b! B
set energy energy - 1
( N; n' k: b' A8 Z/ w9 y7 s ]
' v O6 P3 N+ m) P3 h$ Bend. g) A+ o1 v! b3 ?/ g
to setup-patches
9 x. }4 d) S, k! n: s; _! I ask patches [ set pcolor green ]
4 h2 ^% r3 K. t* G8 o& fend
2 F8 @2 g. a9 C7 g$ S% i3 L* rto setup-turtles( Q, U' j0 T8 F9 [5 q7 H
create-turtles 100
! W9 l0 t8 y- J ask turtles [ setxy random-xcor random-ycor ]0 \+ l) S3 t. x) }
end, v P; b) ^6 l5 T
to eat-grass
7 A; ~" h. F* C, q' p3 \5 }& M ask turtles [ |9 P6 \- y" U5 v3 B- O
if pcolor = green [- ?) V6 F' R( `' M( m* [
set pcolor black
% @+ y+ @1 V+ A set energy (energy + 10)% l& T4 \% `+ l- V5 w
]
: Q4 L, Q' X8 \4 r4 e- ?% {$ I ifelse show-energy?
4 w/ o) y- y7 _& O# ` [ set label energy ]
& g# ]9 v0 v& F O2 O3 w [ set label "" ]0 R7 _+ @% w4 A! E/ j2 U7 e5 S
], n* E) H" Z3 P4 T3 _
end) r' |1 a6 S" j+ r2 \# ~; d
to reproduce
; E1 U2 K4 ]5 R2 O! Y5 C ask turtles [
# o+ x! m# e) g if energy > 50 [4 G* V. g5 Y" R w [
set energy energy - 50
- R W8 j! s! { hatch 1 [ set energy 50 ]' e# Y5 I7 }* @! l: @
]) J" Y( T, `2 s+ o7 m6 W _0 u
]
7 k( c1 U# i" h3 @! Uend7 Q* f$ x9 d; _% c, x8 u
to check-death7 a" e; p2 O& q( T5 T
ask turtles [0 B* q0 @" R6 U' X
if energy <= 0 [ die ]
. c. V! Q" v6 h0 i1 b% X$ Q- G6 {4 \ ]# ~7 v. c, e5 c! X$ H. G! ^
end
4 x0 b* q. Y$ X; a! l$ Kto regrow-grass# i# h, I" o. i4 U' Q
ask patches [7 P4 e& R% u: y
if random 100 < 3 [ set pcolor green ]1 j' D& ~4 l( L4 ^, F; ]
]
' J. U& g! B( S R6 l6 uend
8 x y( ]' ?# zto do-plots9 O! ^3 T. M6 Y/ ?8 ]/ G
set-current-plot "Totals"- J( d9 s, b& \' |( z
set-current-plot-pen "turtles"* \% a5 N: l7 c
plot count turtles
6 `# H( |9 H0 e6 m set-current-plot-pen "grass"
+ h( e* d1 n; `2 U" C G6 i plot count patches with [pcolor = green]0 Z& z% q8 {: r) n1 F: r7 x
end
8 [+ _1 @( {) i1 q3 Y2 W可是运行时提示no such plot: "Totals"
# V. Y3 q' I2 q9 r1 Jerror while observer running SET-CURRENT-PLOT
( p( n6 J7 B" |! X0 n4 L. [* W called by procedure DO-PLOTS3 i* f! M" R) V4 W
called by procedure SETUP
! i4 D) ^ S j1 D* A6 o called by 按钮 'setup'' L$ q* ~' {1 t8 \% P' ^# e. R4 v
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
