我编的程序如下turtles-own [energy]
% N! Q7 e" w; D5 L1 Kto setup
) ?( D& I1 b+ R5 q clear-all
8 g. ]5 a5 j+ s% T! h- `- v- S1 h: ` setup-patches
9 @3 t( {- X' b9 j7 p, B$ X create-turtles 1008 \9 a" U# A2 w6 _8 K1 h
do-plots1 `. w. l8 H- T
ask turtles [ setxy random-xcor random-ycor ]8 {: @8 S3 ^* ~8 l& P
end
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move-turtles
3 M0 P5 Z0 C+ @6 A' S" {( B7 | eat-grass
/ g- ^& ~- f6 m" f reproduce
: F$ q6 `: C- k$ Q3 g check-death
6 E6 L+ ^, _; l Q. b# C regrow-grass; t- Q7 J+ _- o3 _5 b* l& O
do-plots
" \% Z% p" V g: H( j$ ]end
5 e w/ r/ D. l1 v# Nto move-turtles- L% G8 K3 M: T9 U
ask turtles [
" }6 e7 c7 c, u$ E$ E; C+ K8 I right random 3605 ?# L1 E$ l0 B, L, S2 ?. n2 H! i
forward 1% j: w- }" s2 D0 l
set energy energy - 16 O& K+ U0 ^& |
]
7 o1 k1 A& X* w3 e! g$ U3 gend
9 _( N/ X! m. R+ E2 D7 A! rto setup-patches5 W# R, a& E5 a+ M1 F0 f: u
ask patches [ set pcolor green ] v$ d1 |! G2 W0 M0 m: H, f
end5 M6 A! w" L% a h1 z9 B
to setup-turtles
- {. A& a4 c8 C) A/ s$ w create-turtles 100% B* w8 D2 c' b) f( _
ask turtles [ setxy random-xcor random-ycor ]
: B% h7 u# K) w, Dend
6 F2 p* E+ Q1 i9 jto eat-grass' @ q) M$ v' }. l1 x5 T1 M4 G) F
ask turtles [8 o/ x0 k; F+ D9 ]1 V
if pcolor = green [# y& m `: L; Y6 F0 J( I- L
set pcolor black# S4 [2 x+ j- ?+ r, C
set energy (energy + 10)
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ifelse show-energy?
' p7 o% c3 ~4 [, D) h [ set label energy ] n1 W$ `1 F( m+ E( n
[ set label "" ]
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end
$ E9 E1 H) P! _* \to reproduce
$ ?( }1 u* c1 f1 u( [) E# H( ] ask turtles [
6 {5 [4 P( a S if energy > 50 [2 G/ {, M. i# [
set energy energy - 50
, [ B2 o, Y( N" |2 ?7 [& d hatch 1 [ set energy 50 ]6 X' T4 G2 a. \7 w) A4 |
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]
3 O0 g A& C. J" d1 U" |3 jend
; [8 p/ H: D' Q, K# O1 ]. Z, G& Yto check-death) U2 @+ C- K0 ]: m+ a; W; s
ask turtles [( D- V! T! @8 z1 R9 c3 M; t V; d8 Z
if energy <= 0 [ die ]
$ \6 y0 N; E( r8 C, K9 ? ]
* I, H' N. |2 ?& `- T. {& t! x) oend
8 Y$ X" o' C2 y% @5 _to regrow-grass
- X4 K3 @' D; {! `* R# _7 W ask patches [
N/ c" b2 U! U7 b& Y if random 100 < 3 [ set pcolor green ]; B8 f% q+ _: g4 |! ^9 n, Z: [& {& P
]
) I& p E2 t; s, H2 nend& `4 r) V, z6 l C7 e u
to do-plots
$ e$ C/ m5 ^ C: l6 f7 s/ z set-current-plot "Totals"2 m7 E4 v; ]2 D; [% [7 _
set-current-plot-pen "turtles"0 \# Y# C1 Q0 N7 V; |
plot count turtles
v e8 X3 o. d5 E set-current-plot-pen "grass"
# j$ R# y8 z2 K6 j+ R! x7 N" @ plot count patches with [pcolor = green]' T' D# ^, q* \7 {
end
" k5 _. ]9 v1 r0 p; g可是运行时提示no such plot: "Totals"5 D& G# f. ~: ~6 U
error while observer running SET-CURRENT-PLOT. d2 a. v- F2 d& M
called by procedure DO-PLOTS
' L1 V9 c* [- U called by procedure SETUP u4 l. X) a: L4 z
called by 按钮 'setup'
) o- Z( j. \$ j3 T求大神解答啊 |