我编的程序如下turtles-own [energy]! o1 I* l& z6 G( e, u1 R8 N" n
to setup
4 G& I3 J2 P4 n clear-all: V% R4 o4 a4 d, L+ d" n
setup-patches* u$ i+ B. c+ I/ n& d( x/ i- p
create-turtles 100. r+ ]- j% e* b# L
do-plots
+ [! X0 Y" }+ s' V) J ask turtles [ setxy random-xcor random-ycor ]
) v) g2 {; D/ z8 G6 v9 Yend
. V$ G h. Z3 Z z: s; X: Kto go" ~3 J' m/ F2 x. ]
move-turtles2 w; Q1 f( m) c j4 m
eat-grass
9 z3 Q& R( q+ m* A" ] reproduce
5 I U3 N5 _, u1 _ check-death0 m. g- e' _0 x P5 Z+ F0 ~) Y1 b, i. f
regrow-grass7 X) A8 P, x0 I4 ~6 D
do-plots
# ^* s9 r( l; Dend
, C7 ?' _8 j) w& m3 ?/ t& Qto move-turtles
6 O2 S( }; `7 Z! H C ask turtles [5 Q, w' O F5 l2 Q; G( a
right random 3606 f& e0 P2 P, g V5 B$ D
forward 16 e% H" [# W$ e3 y) V- G
set energy energy - 1
* P% E# i! P4 v: B7 u& I6 }2 k ]/ [& V, s; H2 p; e' C
end- v3 V+ r# q1 @3 H' z
to setup-patches
& N# Z, \- F$ h ask patches [ set pcolor green ]
/ c! E. K2 Z6 [6 I1 X4 Iend
$ m+ I% P1 M* J4 v& I% ]3 b( xto setup-turtles
/ k4 o4 T$ N2 x. o# |$ H create-turtles 100
1 b/ i7 N- H9 Q; u( f ask turtles [ setxy random-xcor random-ycor ]: T- S# |1 O1 k5 i& A i
end
. {/ g5 p* V h( |6 rto eat-grass
3 f' i) W0 L6 o+ U5 { ask turtles [: U& ]: H% R4 I5 w0 S
if pcolor = green [
# H6 K/ T( B/ W! D9 q+ d set pcolor black. ]8 O" v$ i# @ |7 L* o
set energy (energy + 10)
- `$ f. G, x0 y ]
6 _" K" `8 A( H9 y3 U ifelse show-energy? w2 r! C( L+ }# R; P; L0 z
[ set label energy ]
/ _, s, P! b4 x2 W: P5 F+ p [ set label "" ]+ Q+ R7 ~3 i& s4 j( K! j% t& a
]% A; n0 l8 N* E" U% c8 I: [8 y, D
end# ]3 y3 K( G- {- y. |. x2 L
to reproduce9 r2 _$ Q% c; V' H; @3 J
ask turtles [4 l; [6 g2 x2 X8 `% H% C. `' `3 Y
if energy > 50 [ Q# ~: O% W7 [& K ]2 r9 R
set energy energy - 50
; N8 Y$ a) q( I2 s7 r( a8 E) n hatch 1 [ set energy 50 ]
3 h7 t% n" f- Q: {1 z( h ]
. P* Y( H. W" Z3 P) D ]
% ?% s& ]* a J; _end
+ b% P+ u- H% l( W, Z% m- i9 [& Bto check-death
3 x1 E, } q& l4 h ask turtles [
1 K% w7 c8 J$ n: k' d8 ^8 [ if energy <= 0 [ die ]
. _' q X- p9 L- \2 m ]
% l. E" C4 U% m/ ]end
1 ]3 n8 L9 K" g! t& |: w1 Zto regrow-grass0 A& H% g; {4 u0 k
ask patches [
2 i6 \" J0 e$ E4 c9 g5 J1 f) z if random 100 < 3 [ set pcolor green ]8 d* L. s7 T2 L3 w! a
]* z; m1 D' _9 f0 R% \* M- c/ R" }1 ?
end
0 W% J3 n6 ^* ]" r4 n! x2 Jto do-plots+ r# N2 T7 Z Y1 A5 [
set-current-plot "Totals"0 P7 |% |( k* d2 s2 k6 P
set-current-plot-pen "turtles"9 k, t2 |- t9 V3 p# \
plot count turtles
: @# p/ I7 ~* Z set-current-plot-pen "grass"
7 L% @0 h. T: a plot count patches with [pcolor = green]! I! c' |$ M7 K: ?
end
9 o3 h' X2 \3 d6 d+ m: u- b可是运行时提示no such plot: "Totals"
$ C( b& q1 f% ]; R4 X" J- ?5 E! jerror while observer running SET-CURRENT-PLOT2 @. T, {: P- u
called by procedure DO-PLOTS) s7 ?6 a( a5 U) F- F* e5 I* g
called by procedure SETUP4 k8 Y/ A' h) Y. A: b8 L. }2 a/ T
called by 按钮 'setup': \1 b! l, N4 W0 Y" K4 w% P
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
