我编的程序如下turtles-own [energy]
9 d$ |2 y, C/ zto setup! E- f3 X+ f/ f, x' _
clear-all9 N0 r( J2 g* Y2 z, l/ w6 R% e
setup-patches
" j/ ^" \: w2 [0 Y3 g% U create-turtles 1000 [& e- c& X" o: e. v8 g0 s4 J5 {
do-plots) C$ ^. Y" @& G2 I1 R1 U v
ask turtles [ setxy random-xcor random-ycor ]1 Y2 X c6 x+ h! Z& y5 G" p; L! ?
end. ?: s% a7 k8 a1 i; \3 H
to go
* ?- j! c6 \2 e) K move-turtles
# U( S' B9 ~) x+ q% c& L eat-grass: C% O: F9 L4 B/ f/ W+ A# U
reproduce9 p/ S/ m) o: W) E
check-death
8 j1 Y, y8 e# \' E: G regrow-grass& l1 |8 F2 v/ v5 K5 ?5 w7 j% y
do-plots" w% B# S" ]; q4 R) o
end4 R9 N6 ~, L" j
to move-turtles
8 Q, b+ T' i5 k& U, X; ] ask turtles [
. @& u$ o0 C( ?" d; F- m right random 360* F: K* s d1 Y! ] \5 N- y
forward 1
. J- i9 P. L1 \% R set energy energy - 14 T t0 {2 ~* p" \. |2 g! ^
]
5 d. {) B l$ A1 r! kend8 b- P z: g R: _ ~: ]
to setup-patches
9 ^- \: q$ W/ R* I" T+ [) V/ e- g ask patches [ set pcolor green ]1 E& U. G1 e9 Z0 n
end
2 g! T" X0 |; N" \& wto setup-turtles- }0 L7 {0 |0 o' K# {
create-turtles 100( z4 `: k) n3 `- K+ w
ask turtles [ setxy random-xcor random-ycor ]0 S9 z8 W4 g# p6 g0 ]$ D# w
end
1 Z6 v1 S* D5 Xto eat-grass
. c! A0 i& ~; [ a. b7 p2 m ask turtles [3 S3 b h6 _5 F2 o9 h1 h
if pcolor = green [
* b0 M) O6 j- Z) g/ B set pcolor black
( F+ D6 w8 W0 O v6 E set energy (energy + 10)6 `9 G* B) i6 G' a | {/ o
]' F/ N& ~; n2 @8 v3 Q
ifelse show-energy?- H/ a: B0 J5 J4 a0 P( k, ]
[ set label energy ]
- b8 r# J& M2 c3 f; p [ set label "" ]
. z u4 i" d% a- m, j( t ]* Z! j+ `5 `; U- ]# Y
end* _0 }0 L, c& n e& K
to reproduce
d- o2 V4 t2 x- S2 [ D ask turtles [$ m0 t$ G7 \4 ]! n
if energy > 50 [8 A0 h X' I2 ]9 I6 x
set energy energy - 50
% n) Z3 N. L/ t9 x8 i, c* a hatch 1 [ set energy 50 ]
4 @+ M. N4 K6 N% N9 g5 n. q+ L ], _) I f9 s: g) a( t8 B, V
]
8 z' l, v3 y- b K0 vend, r$ N; o Q+ A& c0 K* E
to check-death6 b0 W& S$ F9 C$ U2 F
ask turtles [
3 |# U; b! g I- U if energy <= 0 [ die ]( _4 `; d$ k2 r3 O: w" V6 t! C7 b
]
9 w, F( K5 t; Hend0 D+ r. P$ g5 {- V' m* f9 X! X% I
to regrow-grass; F5 y0 q A0 `
ask patches [
2 c; w5 G( G; e M: Z/ h if random 100 < 3 [ set pcolor green ]8 n( D! C- H# L% E
]
v9 L" @, ]3 K2 ?, d( t; Tend
( _& c9 T, {9 P! `to do-plots+ a/ ~: e9 m+ e" m" w( g
set-current-plot "Totals"
( c. X3 \& @( v% O# ^1 M set-current-plot-pen "turtles"
8 C$ h3 g% J/ s3 A5 e% ?* K plot count turtles% f) H) D& O: y+ f' A: s
set-current-plot-pen "grass"' G R; U% x& L# r
plot count patches with [pcolor = green]
1 J9 s, f" O" v5 }4 i7 pend
8 j9 X. t9 |' m+ Z7 k可是运行时提示no such plot: "Totals"
( _& x- o* m) ~' t; W! K8 ~5 nerror while observer running SET-CURRENT-PLOT
2 {8 X6 t- Y5 |( `3 M- Z. \. _5 q- D5 p called by procedure DO-PLOTS
+ ?9 C& X- W2 z, s/ `/ C called by procedure SETUP- ?7 M7 l# m, q' k6 i: k9 W
called by 按钮 'setup'
' K) T. S/ N6 z) j: U求大神解答啊 |