我编的程序如下turtles-own [energy]
3 w- _4 z5 |8 z' l! p/ _+ U- }to setup& K% Q% q0 `" N$ |: I% [6 _/ x
clear-all
% t7 `3 I$ m; }$ b/ T setup-patches
0 @( K8 L( G% a5 S8 f( v1 D | create-turtles 1005 s- ^4 W" _1 r* Y- P
do-plots3 h, P3 |9 A `7 r" g+ N- Z
ask turtles [ setxy random-xcor random-ycor ]( I3 T; ^" i0 j3 ?+ P
end
$ a+ Z( |9 c5 S: bto go- G& e# n% S# U6 ?
move-turtles
. e- n+ I& b; ~ H, D- t eat-grass
" C8 }& m5 M0 y) F* p9 f reproduce; Q- e G: @9 |8 E' |
check-death5 B/ e5 H* s; @ y" c9 r
regrow-grass0 x- j/ M1 i/ \" m/ B. K- w
do-plots3 S8 K# V2 o/ g$ b# |- \; h
end0 o4 R, i4 E; M- L5 \3 g
to move-turtles$ h! b. T" l8 X e9 H
ask turtles [
: j; o6 j8 \2 @ right random 360
, ~$ J- D' ]/ D$ E0 a2 M$ P* \* q8 D forward 1
( d) X* h- L3 i set energy energy - 1
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end: N- I( A0 @4 _+ X: @. n& ~
to setup-patches
* y# B* W; b) d# u9 T! b# z ask patches [ set pcolor green ]6 j. E6 V' B9 V I y6 |
end, u0 |( S, g6 {
to setup-turtles
: }( d8 d8 q; I: s M create-turtles 100$ I9 H# C4 S" \# t: m- d
ask turtles [ setxy random-xcor random-ycor ]+ |1 Z. c+ m4 i$ s9 f( X
end/ H& n# v1 \4 Y3 o
to eat-grass9 t, O0 T1 Z% K% s
ask turtles [; \/ V" C; u6 H, W5 l" k- f
if pcolor = green [
8 r, \+ r5 d7 u3 I: R, ] set pcolor black
! S% l1 d1 f$ }% t- s set energy (energy + 10)
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ifelse show-energy?' F7 k- q. m8 T2 _
[ set label energy ]
- }# \# Z1 U4 D6 ` [ set label "" ]2 d; a$ F# [7 I; c' Y4 D
]+ Q; T3 a9 s0 O9 {: P; \( [% L! j
end
7 @, j, v3 a* e% X0 v0 eto reproduce; h) d X- p3 s4 \6 S% b
ask turtles [
6 r/ G+ |; _: n; d" f, g if energy > 50 [1 C* b. K6 V9 C( n4 B
set energy energy - 505 l8 }% Q$ F9 n* [# X
hatch 1 [ set energy 50 ]4 m. i8 `8 w9 {$ _% s
]
3 t6 [& x5 y$ ?( K7 ?: o ]
+ e, l- w x1 \7 Vend* D' v/ o" l( A
to check-death
5 z% }( i* J( P: T& j3 q+ d/ ?0 D6 j ask turtles [
+ z! |# J6 h: o if energy <= 0 [ die ]
( A) x7 M `0 ~' E! h) R ]: J1 m, L Z" x" r
end6 r. d/ _7 a% J
to regrow-grass
; r. T: A7 y E5 y2 H ask patches [
6 @% z+ g/ k! q4 ^7 C `9 O if random 100 < 3 [ set pcolor green ]' i5 w( g1 A Y/ P$ E
]
3 w. f1 x+ s( ]: Yend9 }8 z+ \% Y$ h! P- i" t7 i
to do-plots; _# _3 Z( A% |! N% f
set-current-plot "Totals"+ T+ F9 s- J' ?; K+ k! @4 y
set-current-plot-pen "turtles"
6 @' [: P& ~0 t( W' ?6 v) Q plot count turtles
# e4 r N7 b/ G7 z" d set-current-plot-pen "grass"
! @5 C f; m) e/ H' n4 C plot count patches with [pcolor = green]
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可是运行时提示no such plot: "Totals"
! c, x2 g+ s" g8 c9 u9 Z+ `5 jerror while observer running SET-CURRENT-PLOT
9 d. X$ \' A- { called by procedure DO-PLOTS
% r& ?* ]/ c7 D% c3 u+ U& R6 C called by procedure SETUP5 o: H% i) b6 J! e. V
called by 按钮 'setup'
/ Q- w' W: t/ Q) e+ W$ Q2 `求大神解答啊 |