我编的程序如下turtles-own [energy]$ N- T. j8 c! v& ^
to setup& Y" ]2 k6 g% S6 r; ?
clear-all
+ n5 _% E. [2 {: m4 x' U setup-patches
8 _) k' [% Q3 `. R9 L create-turtles 100
, n" [8 t% u: U4 l& O9 Y, k do-plots
# p0 X1 l# z' }+ C2 t% } ask turtles [ setxy random-xcor random-ycor ]
' G5 E, Q0 t6 _2 Dend
, \$ y; g! Q. D, l$ Mto go
+ O: a2 W- A+ |3 H7 Q move-turtles
' r1 G9 q$ G6 u' } eat-grass
2 A! k; L3 H* V reproduce
5 Y. n* l ?; x, W/ ? check-death
" }" }5 h2 W) i: ?( j' u regrow-grass- X$ [+ V( S0 l) u* R' R9 Y" k' ~3 v# H
do-plots
$ G1 t, }5 R( H% Vend- J) l& N6 Z4 m: c
to move-turtles
" M4 M' ^4 y, ]+ A* B. R4 L2 H ask turtles [
% F5 `0 h5 l7 Z7 J1 i right random 360
, m6 i! ]% v; a8 k forward 1, i; g" l/ u& W" `, C- k
set energy energy - 1
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end' E- @8 G/ g$ Q* g) a( w' Y v
to setup-patches3 C7 h0 p5 \9 X2 c% i
ask patches [ set pcolor green ]
4 r) C6 M9 h! l3 K. xend
' o# Y! {$ V7 U3 ato setup-turtles
; K" p& @: ]9 S( z0 M4 d0 p; h create-turtles 1006 \1 x8 p" Z- {# Q
ask turtles [ setxy random-xcor random-ycor ]$ |9 Y! J7 j# |9 K
end- Z# F# v! Q) R+ X; h! h
to eat-grass
( [, p) Y1 J8 u2 z ask turtles [
! ]+ X- y: [! w8 e5 q0 W; o7 G if pcolor = green [8 N1 S1 ^; z' F7 ?8 m
set pcolor black
5 j' |9 @7 l/ i3 R! m* { set energy (energy + 10). \8 E8 U* f p2 v; g M4 u* @5 i. @
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ifelse show-energy?
- i8 r9 N7 s/ I, O) Z0 I5 v& L! w, ] [ set label energy ]
" t( O, j4 p# }9 s6 A# [ [ set label "" ]
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end
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ask turtles [
( X# w& ?1 S3 V4 w" U i if energy > 50 [5 z& {/ C6 I4 {: d# [& K
set energy energy - 50
$ X* {% b5 _. D hatch 1 [ set energy 50 ]6 t9 ~1 H* k; S8 T4 z X4 d7 E8 w
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] i( \+ i3 y$ h0 W
end
, A$ F% p$ g. o2 w/ P& G: z c2 rto check-death1 c- i( n S- v& U4 E2 {+ N) b
ask turtles [
7 e& N9 O* p1 l* k0 ^ if energy <= 0 [ die ]
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end
( l: z; f2 F, f- G7 x zto regrow-grass, J7 W( e! {7 @
ask patches [- \( J5 d6 Z+ ~* Q
if random 100 < 3 [ set pcolor green ]
7 D! Q- Z6 h8 {8 R ]
( b- V) f+ L* d3 S( uend
4 D$ G* f' q4 i }! v$ z3 p2 X7 xto do-plots+ w9 V7 \& G" i6 U( p2 b4 p
set-current-plot "Totals"; d# k) c! f( d$ D
set-current-plot-pen "turtles"
2 e0 K8 g1 d1 @9 @ plot count turtles
' Z, T( s8 T; H- p. m8 _* n set-current-plot-pen "grass"5 b1 z2 n; X; \5 @. C
plot count patches with [pcolor = green]
0 p. [% i" u0 P8 H2 c% N; Yend$ Z& q1 k8 v5 V, ]1 O% q" z
可是运行时提示no such plot: "Totals", }9 L; w# d* u
error while observer running SET-CURRENT-PLOT
5 q X) g8 M8 T+ F! ` called by procedure DO-PLOTS, U8 I, _4 Q7 d, n0 j. Q
called by procedure SETUP
7 D% i% w2 {" J called by 按钮 'setup'- a( x1 k& w8 R9 j
求大神解答啊 |