我编的程序如下turtles-own [energy]) s2 E* Z7 U" a2 w% S X' ^ R
to setup, B% f8 T: D6 F0 _' H7 X' T. Q
clear-all
6 v( i% F! T# h setup-patches$ h' E4 g0 @$ F% W
create-turtles 1006 k. m' G# I) c7 N: U* r7 W: M
do-plots
) f1 C. g8 z3 _. e& h. Q2 v, \ ask turtles [ setxy random-xcor random-ycor ]* |3 S* R6 {+ b+ `$ U% G/ h
end- W2 d' G. l6 K! L! g
to go0 x' S' H' S/ W
move-turtles/ c" g, h7 c# D- }; f X
eat-grass( K. c. d6 u0 Y2 ?6 S/ ?: {
reproduce
) s8 F9 |" K8 g! o( I: O check-death" p! z; l' z2 Z3 x, G$ D) {2 ~5 a! } I
regrow-grass
( `1 M4 j0 T9 U- _* E do-plots: J( |1 P; l; n2 M; l9 L2 K1 I3 O
end
# z0 b R* e3 c9 ato move-turtles
5 z U$ ]9 G2 A$ Y- |& N ask turtles [& b) t7 Q# k1 J) X. i& N& B& ^" ?
right random 360
0 C! z& V: X& f7 f0 ] forward 1
# F' _6 B8 I; p. m% ~ set energy energy - 1) s- j& m; X4 e/ o) g
]' j; m) [# ^9 W ?/ f5 M
end! I- P J! h% D+ c' B g
to setup-patches8 w1 ] Q& u6 _/ e3 R8 e
ask patches [ set pcolor green ]# d _# K h! Z
end6 M' D& x1 v) ?3 @
to setup-turtles
8 [5 n$ ?4 Z8 f* R; a$ H$ B create-turtles 1000 H! |2 f& ` X3 S! r( n6 P6 V+ l. H5 x
ask turtles [ setxy random-xcor random-ycor ]) L/ T* } Q, I. g9 N6 p
end2 g& k$ B- f+ I' {: M
to eat-grass
/ A; c) L+ U5 F1 x6 \ ask turtles [
4 ~4 t3 R5 Z+ K; U9 a, O; o; R9 P; I if pcolor = green [
& A- Z0 F' u5 t$ i set pcolor black6 x7 C6 S# V/ | x
set energy (energy + 10)
% N9 e4 X+ [ L5 Q$ F' ^ ]
6 I0 P. m( t2 ]) B ifelse show-energy? E6 B' e! \* C! m' U4 [0 o# }
[ set label energy ]. K( z: P+ p3 z* G' n- P
[ set label "" ]
9 a/ o7 p3 [+ M' A1 ]% w ]
, @& \0 T) l: j2 ^6 Z* w, _6 Xend+ c( \1 M2 O/ ^5 Y% W
to reproduce
4 h1 z. d, m' l4 q ask turtles [
- f" R: y- j; Y4 s7 v if energy > 50 [3 |0 [* L8 l9 p _/ }! |+ ]* B Y$ g* j
set energy energy - 50
3 Y0 a* e, T5 O# X# t1 S hatch 1 [ set energy 50 ]2 ~) L' l5 A9 A3 ~$ O
]3 T9 @1 i& a, }8 O0 D& Q1 H
]7 g# m& _, B, _
end
# ~5 P% v9 i) W# Hto check-death
' ^6 M: ~: K8 b5 ?5 ^/ m4 E ask turtles [
T5 c8 A0 K3 H( v- P% B if energy <= 0 [ die ]1 t- _" i" ]% z$ [# m2 M
]
+ D1 Z9 p! o% t) W- Kend
4 ]. W( W. d/ d9 W& pto regrow-grass* n4 l, K' W& z4 s6 [
ask patches [: \; j' e. q- k, y9 ~8 z. p$ g
if random 100 < 3 [ set pcolor green ]" N2 o: @; D+ u
]. G' T0 i% f& s1 D8 n. V
end5 I: D( `, o' v8 }
to do-plots2 q8 M7 H# j4 n5 D: e, |; X
set-current-plot "Totals") a2 @1 D- F; C/ t( [0 h4 `' c- X
set-current-plot-pen "turtles"
1 `2 _' E- W; F- S) |' [ p! Y0 h plot count turtles
: h5 ?6 c. q2 c1 m5 y3 Z% n set-current-plot-pen "grass"
0 H2 }% i. Z( V) s1 b' t7 Q plot count patches with [pcolor = green]6 P" A: |& \: j- t6 k4 f$ o3 [
end
' P! i" j, w( P3 B! p可是运行时提示no such plot: "Totals"
: j8 ]( L3 T/ [error while observer running SET-CURRENT-PLOT! |/ R# ]7 h/ Q0 Q* V
called by procedure DO-PLOTS
' R6 ]# h0 ]6 G- C/ o8 O0 h, X called by procedure SETUP1 E8 x8 A g4 Z/ V; m
called by 按钮 'setup'/ A+ g' y9 U: _: x- o- M8 g; ]
求大神解答啊 |
[复制链接]
楼主
发表于 2013-5-29 00:25:38
