我编的程序如下turtles-own [energy]
3 L" D* B& x' p' H3 r+ D6 R( Ato setup5 N1 V a- {, N5 G4 e
clear-all
5 o5 \, C4 |) q% \ setup-patches* _2 d/ G( ^1 c$ r0 }% D
create-turtles 100
6 I. }. B4 E8 i9 R9 G2 R do-plots% N2 x6 g: z; P/ o2 W& J
ask turtles [ setxy random-xcor random-ycor ]
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to go
& l0 K0 | ]# |, w( Q( s move-turtles, i2 R- {4 g6 R% d3 R
eat-grass, b0 x$ D- ]: U
reproduce
& V! @9 e1 L" F! U$ j4 g3 l* A check-death
' e- e: B3 f6 e regrow-grass$ r* v( w1 ~8 F' K1 o
do-plots
, h i; z. |" }) K8 ~8 n3 uend
3 W/ H8 G M( F0 u1 C* cto move-turtles
0 Z# `5 p4 A5 d9 X' } ask turtles [
4 z% `6 j9 r/ b3 Z- }! n5 u2 Y right random 3606 N' d- A" b' b+ |( r x1 {& j
forward 19 P4 q" V; j, H8 G) b. u9 M
set energy energy - 1
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end
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ask patches [ set pcolor green ]7 p: Z! Z7 j2 U* d- C3 q! y
end
0 R/ U" p+ |4 r. ~to setup-turtles2 e# y0 V* [: q* G _7 @
create-turtles 1004 ^ m7 m, C2 P/ Z) n7 Z: @$ w3 Y
ask turtles [ setxy random-xcor random-ycor ]
( Q# R8 [7 r( j3 e- j" j. r! fend
6 z0 H! x4 W( R6 i! qto eat-grass
, ~# b* g3 s" M4 | ask turtles [, g& w3 \+ O2 {5 L: J3 M8 d
if pcolor = green [
; o8 b- M4 B. h7 V' u- p7 M! s set pcolor black) j, _3 t1 b+ I, O2 u) g
set energy (energy + 10)
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ifelse show-energy?
8 o7 q" g. K" m8 Q# U [ set label energy ]8 O% d1 k1 K J; ?* i1 N
[ set label "" ]
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* }4 G& V5 A9 B* m+ Q: Xend
& e @" E3 Y8 a' w4 F1 kto reproduce
* r4 e5 a: N( f" D K$ W ask turtles [+ V3 D; R$ \3 W9 J& w
if energy > 50 [2 ]% V( ^1 O0 g" m; ^0 I
set energy energy - 500 ? h1 Y1 ?8 Y& r) b
hatch 1 [ set energy 50 ]
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end
) `1 k# X) ? w3 j1 gto check-death
# {. u4 w0 _6 r' y! l6 A2 ~ ask turtles [+ \9 M6 E% r* s( A) S
if energy <= 0 [ die ]
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end
" t. [4 {! ]: Mto regrow-grass9 c; _0 S3 P' ]& D8 U% \( V0 z
ask patches [ R, x, ^( z! x9 Z" e) t
if random 100 < 3 [ set pcolor green ]
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' q" O- U: T2 J* vend
4 e( E9 S& p w4 _5 T( ]8 Fto do-plots L/ K8 C3 N* z8 O1 ~, L5 b3 Q
set-current-plot "Totals"( r. F6 @6 g) o
set-current-plot-pen "turtles"" q& n; t& F7 A( G( Z
plot count turtles$ _1 W: h4 H' E6 I/ y I/ p
set-current-plot-pen "grass"
1 @8 V# K$ ]4 v plot count patches with [pcolor = green]
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可是运行时提示no such plot: "Totals"4 g' S; P/ Y) x& C* q% ?. |
error while observer running SET-CURRENT-PLOT
' K, r5 ^) ~ L1 R% X6 D" H- z% v called by procedure DO-PLOTS
/ l- N, m- w- |! c5 P/ v called by procedure SETUP( a( l K8 U b D
called by 按钮 'setup'
* k6 k1 ]' y, ~求大神解答啊 |