我编的程序如下turtles-own [energy]
( r6 V' x5 j5 h1 i9 oto setup
2 k& O! X& N+ s, O$ @( q/ ` clear-all1 M5 f! V1 M3 u( a
setup-patches! \6 t8 t& S/ ~2 }
create-turtles 100
6 \0 u$ n2 R) O5 x6 S do-plots
( w% H- l" J7 b( `1 \& r ask turtles [ setxy random-xcor random-ycor ]
/ s' d# k+ O' @end
" w3 P p2 F v Wto go
( I: G. T9 ~4 n' Y move-turtles% y5 R h i, ~
eat-grass& ~$ A( r- A( z( A
reproduce9 k1 y1 k3 s! Z _% u
check-death" ^, s5 M1 n9 T5 d; Y: f
regrow-grass7 P9 r/ J! _' y* A- H& g
do-plots: K( B+ c4 y+ i: o4 X
end
$ c1 W- ~+ d7 z' `; V; Z7 Nto move-turtles! ^# \1 c" Y. H7 g. j! _9 }% _1 A
ask turtles [% I4 G& A l+ r) C
right random 360
8 x' ]% E3 }! W2 e+ e) y forward 1
0 H! C, w8 [; _; i set energy energy - 1
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end* P2 c. p6 ?" Y) V- B
to setup-patches5 m5 L# b; ^5 q; F J) h! i* \4 g% c
ask patches [ set pcolor green ]
; ^1 [. r9 Z* W3 |" H n1 Uend- ]. W- j) S- f
to setup-turtles) H7 s, ~ K4 g7 {" p. y
create-turtles 100
5 h, ^2 s$ X8 v A- h/ c: b) a2 s# ? ask turtles [ setxy random-xcor random-ycor ]
6 z4 v) m5 Z9 F! Rend( V6 y v. r0 G) r: }) o
to eat-grass2 @6 s: ^. W8 g, W( o, d
ask turtles [, z3 T1 I2 o4 j) t( t. H/ v8 j
if pcolor = green [1 M! a+ P3 h# p( i8 ^# A: A
set pcolor black" n7 Q2 ^! B. @) I* o
set energy (energy + 10)
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ifelse show-energy?4 R/ z5 x& G; S/ ^/ L3 j
[ set label energy ]
9 H; h# G/ s$ c" j& r [ set label "" ]
* U7 l( D4 x c2 `' p ]4 p7 q9 X: U& U, c3 Y+ J4 B3 y5 I
end
1 O2 m% A3 w7 _: Hto reproduce
' K. Y) [2 y- } ask turtles [8 Q3 n2 `# C* V
if energy > 50 [
7 d _+ Z- Q* Z* M; E* ?& U set energy energy - 50& P; q2 \# ?' ]# o8 r0 k8 T
hatch 1 [ set energy 50 ]
* C0 Z0 f: A* f ]3 J* q8 Q" s$ S+ r( C
]" {- C) l- \* F/ w1 `; K
end
, U5 T4 m3 w3 eto check-death
! J% p: U2 O$ ?( x( Q( A3 x; [9 R0 ^ ask turtles [
- y7 d/ R' |3 v9 D if energy <= 0 [ die ]. L' C! I8 q' X" k5 g# ]( q' j
]
1 R+ h& \! U m: \3 O- E% Dend% z4 r$ U* `5 A$ p4 }4 U, f
to regrow-grass
" K6 l. a# C4 q8 q. w ask patches [
) @& y9 f* S/ W+ X5 I d% s; {! j' X if random 100 < 3 [ set pcolor green ]
' I! a; P+ h: ]' b ]$ I& ?% v7 l8 `- n! [. r6 q9 ^3 e
end& U. U, `: c7 i% P* p
to do-plots
! C% p3 O& y' r set-current-plot "Totals"$ R$ `# M3 j& V8 J$ t& g- O( V' E
set-current-plot-pen "turtles"9 V$ o& K- x' C
plot count turtles& M$ M. x& a$ T' ]1 H; J$ L c
set-current-plot-pen "grass"7 T/ b r0 |$ r2 s5 _0 i
plot count patches with [pcolor = green]# k% Z! @7 V6 c& S. s
end9 y8 K5 T6 o7 q) c
可是运行时提示no such plot: "Totals") O6 t) z n& {" C/ r
error while observer running SET-CURRENT-PLOT9 ?5 s N7 t0 F( H9 ^
called by procedure DO-PLOTS% C9 X; \- l: R8 j
called by procedure SETUP
5 r5 E- V" k) I/ l- f! U called by 按钮 'setup'; c" n6 F1 X( y2 n; n% r; m
求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
