我编的程序如下turtles-own [energy]0 A3 X& S" E3 S, x3 G& E
to setup2 m6 y& y; Z4 j& n% Z; N
clear-all
8 b G4 _ ]$ E' R setup-patches
* o% r. |8 z0 s! j! J create-turtles 100* b, G6 z% C- T( V" @; X
do-plots2 z# T$ a4 h- v, F$ {7 {
ask turtles [ setxy random-xcor random-ycor ], _- ^; D# b) K5 U4 R$ A
end
/ b+ Z5 A* }! G, Bto go$ J) E2 _8 d t5 F$ b( n$ i/ [) X4 W
move-turtles# Y0 e1 D5 O+ X$ g9 M) w
eat-grass9 X5 f$ C5 K5 t; Z$ D
reproduce0 Q4 d& a, i6 I/ N$ ?
check-death
5 b. Y( G1 E4 m regrow-grass9 _, L% w, j* g
do-plots
- e7 z: `- L9 o* { gend
8 G5 Q! T! |( D7 x. g8 }- J) |to move-turtles+ Z) N5 F) Q4 H4 `( n$ C2 G
ask turtles [ Y' o2 x3 i; v' [* S! l8 C
right random 360
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set energy energy - 1
7 {8 M: j' ^# \% h# {& j8 B ]
; q. s) U+ L. `5 Tend+ U1 F9 n* Z2 ~( \
to setup-patches' y/ `( a( r! a% y
ask patches [ set pcolor green ]
% A$ g9 q% ]. l# v" v: wend( K! F6 C1 J" d- g6 u
to setup-turtles$ W+ U1 @" s4 \6 p5 H" Z' o- y
create-turtles 100 M0 l$ K r% L' F
ask turtles [ setxy random-xcor random-ycor ]; Q# i# P7 ]" w) r' z
end
! {7 h' E5 k; `; `7 ~2 h# cto eat-grass
7 n2 B7 [6 g3 L ask turtles [
$ O5 k% y: F2 z! K if pcolor = green [. L" s4 W* N# N8 @5 z
set pcolor black8 y; P" z0 R8 e8 h6 a
set energy (energy + 10)! U+ [0 e8 z8 v( R
]4 X/ a: r/ A* ]9 J. d; y
ifelse show-energy?
5 K2 w6 ^; A0 m& e [ set label energy ]
" z; r$ D; a' S- E, r [ set label "" ]
- ?+ m3 X5 e0 Y/ U ]
" Z; {$ G3 C! G- cend
0 p5 e0 e" c# c; q8 m, W# b; v) o, Sto reproduce: V; n) Z1 j9 N
ask turtles [
6 }! i2 H E) v2 N2 G, g if energy > 50 [8 ]! W1 I- k% t) ?5 u4 V
set energy energy - 50
8 a+ {' l1 H, N! q. e hatch 1 [ set energy 50 ]
" g6 y+ I/ c9 T7 v1 p2 Z d# b ]
# ?+ y9 z7 R# i, R; Q ]
+ G; q6 |# l$ |& H) Z; l4 Nend
* b8 X' @6 f; C+ o' ? hto check-death
4 z- T9 B& n9 ?/ W% ^, R% e ask turtles [
3 }+ y9 m& d6 [7 u if energy <= 0 [ die ]. [/ V a0 F) ~/ J; V7 x
]
, p% P; k8 H) q4 iend1 x3 \- N3 o" `( J1 c- r- ?4 m
to regrow-grass. n" w+ Z/ F B
ask patches [
( Q# w M: _ }2 J5 c+ C/ F- B- ? if random 100 < 3 [ set pcolor green ], d0 K$ G2 H, s
]" E. O g. n0 j
end
& c4 M% p- C% _to do-plots4 q- a/ v) M) Y# ^ Q
set-current-plot "Totals"
% U; _; m5 y: X9 p' u2 k1 c1 G7 y set-current-plot-pen "turtles"
8 x+ ]: j5 _; H3 m f plot count turtles
4 Y! l# R. @7 y/ } set-current-plot-pen "grass"
" q _6 |3 y& x7 |0 \ plot count patches with [pcolor = green]
2 @5 \. I9 V& Yend
9 {' g/ n# B3 @/ d可是运行时提示no such plot: "Totals"$ Y) [) O/ E9 v! X
error while observer running SET-CURRENT-PLOT6 i1 Q% v/ t$ B8 \7 r" f
called by procedure DO-PLOTS
( H, a% T' B6 C8 C! R! K called by procedure SETUP
/ K4 y2 ~3 X( D) B( ^ called by 按钮 'setup'
: v& s% D( P- y2 k( P# u/ j% x1 D求大神解答啊 |