我编的程序如下turtles-own [energy]
) B" }* _. r) E' m: p% A5 j/ s8 Nto setup4 V8 e, c( x- Q3 o5 z N, |
clear-all0 }3 W* o% o& l0 h3 n
setup-patches2 e1 m/ A* w3 {6 ~5 F
create-turtles 100
& x- N9 @/ n k7 C7 y do-plots3 v& T+ B& o6 s( u
ask turtles [ setxy random-xcor random-ycor ]
9 v" r- W7 V* }end% d$ ?9 r1 c7 L3 c! N8 k) o
to go
/ J5 u( C. k/ z4 ` B: p move-turtles. d+ B3 d6 w1 g7 A( I5 o3 v
eat-grass( |! x2 Y$ B" g* A
reproduce5 X- x: a3 V" r# H) U! U' R
check-death
; Z! ]9 h- l( Y/ O" d }7 d regrow-grass
- ]4 q0 [2 Q) X8 V% u% D6 A1 E) V do-plots
, h6 |, y/ s& T7 o' q$ \; [9 vend
7 ?- p7 F, @4 z, mto move-turtles
; P8 d: A$ q7 V' I5 | ask turtles [
8 S* B- u# c5 C right random 3604 M8 V1 G" d8 ?; y6 {
forward 1
6 F4 p* Z# [: T, }1 t set energy energy - 10 s$ n8 t$ X" T* j
]2 U4 w8 e+ {# T" j' O0 n4 z _
end
1 s) F# i6 B6 ^' {; j8 oto setup-patches
: k* Q! U0 t9 l/ X Y/ g6 X/ w1 y ask patches [ set pcolor green ]
) P) E X A' E6 |/ Rend: e! {$ M1 `! m" z0 `- y. `5 _
to setup-turtles3 z' X' @2 e* N3 V2 y5 k7 Y
create-turtles 100
4 o" L* i& X% U6 l( [2 v6 s ask turtles [ setxy random-xcor random-ycor ]- y" k8 L+ ~& X
end
/ X' h- W7 Z5 F& eto eat-grass7 Z. m" B2 b; y; G
ask turtles [
' u; P. y5 r7 Y {. L if pcolor = green [
% u6 e6 I2 o; }3 T; i7 v8 q) y set pcolor black5 G+ @; Y9 m) S8 t$ S8 j
set energy (energy + 10)
! O5 f9 {1 \& v- R/ c" b: p+ ] ]
7 y& M$ D4 s% y. _) N! } ifelse show-energy?) P0 W6 V; u9 C" {) M
[ set label energy ]. w' E- j( i& b: }
[ set label "" ]/ r- D: Q9 c) f! }' b) P4 k( ?
]
0 N q+ ]1 p" z7 y3 V, Fend+ W* B) r2 o0 U) p' w A. d
to reproduce2 R5 f# X1 |8 O9 W, d
ask turtles [
7 x0 J( e+ v# j8 x! g3 F1 o if energy > 50 [# j# G* z; w( i/ [1 E
set energy energy - 505 J) o4 d! R! H. W/ w! x; ^
hatch 1 [ set energy 50 ]
; ?5 G% t4 G3 K1 H4 s ]
7 V- n3 X6 o+ d ] M1 H: ~0 _2 ?8 d
end1 r$ o1 r' I! M1 [2 E
to check-death) z9 X; E6 {# U/ }6 c o. E
ask turtles [
4 B, m( i- T) f9 z if energy <= 0 [ die ]: R& y: d5 Q4 n( Z4 G) f
]1 S z$ d8 G. O" c8 n$ Z+ \
end
3 {9 { _6 i: U/ r' c3 Zto regrow-grass& l1 p: K9 w0 {3 K4 d4 T
ask patches [1 q( ~0 ^0 X; x7 V m: o
if random 100 < 3 [ set pcolor green ]( b; x; _$ L7 P' p x, I/ f
]
) _( q) s( x9 N" Hend
& e' E [+ r8 j2 w* pto do-plots5 t& E+ k) L3 r
set-current-plot "Totals"
& o! w3 h2 e- h% N5 R# }0 Y/ K set-current-plot-pen "turtles"
" N) e# G0 @' o; y$ q4 B8 C plot count turtles( K$ D1 ~. f4 ~
set-current-plot-pen "grass"
0 n$ X7 M" E) c plot count patches with [pcolor = green]& t$ b$ x6 W4 U
end! o7 J$ \" L( `6 d2 ^' y
可是运行时提示no such plot: "Totals") w- j' b9 S: d3 d) t9 m
error while observer running SET-CURRENT-PLOT2 l" G O; }4 ~% B# T, H
called by procedure DO-PLOTS
& O% d- g+ O& V+ L called by procedure SETUP
$ ]6 Y! p6 u' J7 I- d called by 按钮 'setup'3 A7 u- M0 K/ Z- Q, v
求大神解答啊 |