我编的程序如下turtles-own [energy]
* v0 c- V+ Z: R8 rto setup3 W7 N0 J9 m5 t4 h. |
clear-all
1 B# N% z6 q$ u! `+ U setup-patches2 n! O* s* I0 o- E n; Q( x
create-turtles 100
5 h/ t& C Z5 f; b# ] @# B+ z% O do-plots% g6 K# V& ?6 G# y! ?. j# w5 K
ask turtles [ setxy random-xcor random-ycor ]
. D5 j; b0 I, d# H* }end2 }2 p* K" }+ `: \
to go
" K g( d# z) v4 }+ }% y B' }1 I move-turtles
E( ^5 Q7 _2 h1 X6 C% f$ s eat-grass
9 [; a. {) P; v0 U3 {* v) D5 q reproduce
2 L: P2 \, Q% b6 C/ c. J0 u check-death
4 @) X `8 _; v- d regrow-grass4 l" g) u( a |/ k. ^& l& W0 e/ M" z
do-plots
" N6 v! F% t$ S9 yend4 R' J- o3 z8 ]" M; W7 s
to move-turtles: H! c. Q6 b0 V1 V5 B1 L- ?; P
ask turtles [7 Q& q" K, l+ E3 W2 v) R1 s
right random 360
0 }" I0 K4 r- _0 T7 E5 J forward 1
( g! r, I$ G* z$ W* s7 M; l/ i set energy energy - 1
2 o" C3 ]- b: l/ R1 G. C7 l& W ]/ H$ F& O, z" f, S+ G% S4 u( n& U
end Y& v) F' ^9 C
to setup-patches% @' y) G2 O- n- X$ r7 S
ask patches [ set pcolor green ]
3 t- }" w O7 H6 S# T. send3 p0 w( R# _* ^! o- n3 Q
to setup-turtles, y; b s! p; i, R# J8 |/ ]6 I
create-turtles 100# g) M( d8 j1 G3 j; }- J; \; S
ask turtles [ setxy random-xcor random-ycor ]: l% ~0 p7 A4 N4 i2 T
end! J& a4 S: M ^$ K; c+ e
to eat-grass
# u6 o6 N3 r: Z1 u, ]( k ask turtles [' r/ r& c" F6 a! D$ _
if pcolor = green [
0 N" p% n: E$ X* e9 m, v. z+ z set pcolor black: O: Q7 d( s+ I9 B, e' ^* f
set energy (energy + 10)
4 L9 r! M, |( @& S6 r+ R; H$ e ] Z. F8 _0 b2 S( |
ifelse show-energy?9 V* [) Y a4 v0 C) {
[ set label energy ]$ I$ L' I! h" z+ ]$ { Z H& s
[ set label "" ]
" q# n! e/ y' q9 I ]3 F" M) P! R$ h6 k8 d% X, N8 }
end4 K7 f* s0 v. o& }: a& H
to reproduce& g$ Q1 A$ g8 G9 O9 G7 h. L% x
ask turtles [
1 [' v$ ~6 [4 N6 G: W9 S if energy > 50 [
- e% V2 C# \! @ set energy energy - 50: P) k0 F/ a6 W" q1 K3 v* d
hatch 1 [ set energy 50 ]
8 I. P1 U+ B5 g! I) M: C ]7 m6 `8 ]$ E9 m1 F
]
4 j- S- z* M9 eend
& _- _2 e7 G( R7 Q5 dto check-death( k/ V9 [- c1 Z0 J
ask turtles [
% H; ~7 c; u4 a3 N/ B if energy <= 0 [ die ]
- }( O3 c% m) r2 d- A) v" c7 n0 U ]6 n' x& M$ J2 ]
end
: F/ a) k5 I2 w; V* f6 Nto regrow-grass
1 B& ~# A3 S. i: ` ask patches [$ t+ B# z% D* H( V k
if random 100 < 3 [ set pcolor green ]: T% b3 S( D! a5 M: B
]
5 Y/ B: j: u7 v6 n* P! ?6 e' K- xend
. M! [9 S0 Y' b9 _" tto do-plots
* L1 N7 t$ \ {) h) C set-current-plot "Totals"8 D5 H" m. ?# ]! X4 X
set-current-plot-pen "turtles"
8 g8 r; v5 P3 a/ B; @ plot count turtles1 p6 S7 N" f1 u
set-current-plot-pen "grass": T) |' g0 n/ W: G$ f+ j2 ^! ~
plot count patches with [pcolor = green]
9 t- d: D+ [; c9 {. ?$ Pend
8 b4 i# X" h5 ] r: o8 \$ {可是运行时提示no such plot: "Totals"$ J% j, N0 ]$ d. i% { y
error while observer running SET-CURRENT-PLOT, \3 y/ C0 i, Q
called by procedure DO-PLOTS1 k) y2 C9 B& G
called by procedure SETUP! ]! ?( h$ ]# N8 m% g4 [
called by 按钮 'setup'
. B" x9 ]: b4 P8 X6 O求大神解答啊 |