我编的程序如下turtles-own [energy]
" L* \: m; K0 X( s- d, T! k8 S/ Kto setup. _" z) i+ b' O- J; u7 U
clear-all
9 x* B% Y% v' L! B! c2 a setup-patches
6 D/ N H4 u2 L. n0 G! J create-turtles 100
; o1 |5 |& t1 V do-plots: T( @; V$ K* l9 C* h
ask turtles [ setxy random-xcor random-ycor ]
4 V% F( K6 \2 B, t4 ]: B1 C- j& Hend8 I8 `* T6 l9 Z2 x- R
to go
8 w2 t# p9 Z2 d; } U% x move-turtles
# H. r+ g4 O; x: @3 @; g% m) i eat-grass
: c* L: A' I, f0 V# z5 [6 r: C reproduce
, T% b: G7 |/ I; e2 {) b check-death
0 e' K; H+ U* q regrow-grass8 X( N3 y. Q+ @. i6 \
do-plots
1 h5 {4 B" P) e- g! _: D0 o8 Xend$ [ R9 a4 }" {* v* }% I
to move-turtles3 F: ^7 o- t( `# ^ J
ask turtles [5 `% P0 ^' [1 Q# A' |* Q$ Q0 A8 Q
right random 360
6 D4 b- l% j/ a4 r forward 1
2 S" N, W6 `% V) L) d, Q, ~ set energy energy - 1" c2 \) p; }0 a- _
]3 y1 s& b* A" [% ^4 u! j i8 Y: j
end0 Q5 ]; {: U- y+ y
to setup-patches+ B% r2 k3 N1 p4 X
ask patches [ set pcolor green ]$ G% f7 p$ U$ |0 U& Z( B% D+ y
end
" {0 y# D! n3 G2 `* @3 v+ ato setup-turtles- ?8 Y- S( q4 Y7 Z9 t
create-turtles 100
# A% u1 U+ W5 I0 l! ~ ask turtles [ setxy random-xcor random-ycor ]4 o/ |4 z; Q& |! K) S0 A
end
- s0 e' k% k0 w, M7 c/ e' e- Tto eat-grass
" K! \# s4 k0 D% z" ~/ J. t, C ask turtles [0 i) R/ g8 K( B/ o/ ]
if pcolor = green [
4 C" j/ K' a' H% I$ @+ S$ H set pcolor black0 J& z ?. m) ?5 R4 B5 b
set energy (energy + 10)7 T2 m) l0 [4 M" [" E
]* O7 ~- M2 B9 ? e9 D( R; b5 c
ifelse show-energy?
5 @# |- w# |6 l; P T/ p* Y7 a' E [ set label energy ]; W, z9 u* P; [" Z
[ set label "" ]* g2 v* Q2 P% h# V( k- L
]
- `& f$ u x! e% W( H2 aend2 E$ U9 t0 R" [% }- [
to reproduce; c# G% G, I' [' L
ask turtles [ F1 b P2 O3 c
if energy > 50 [- }; N D2 h0 Z7 H9 t2 ~) G
set energy energy - 50
+ Q: P# O4 f) t hatch 1 [ set energy 50 ]
3 h; \4 X& x( {/ f/ a. B1 q ] A7 k* r$ t; y7 ~ S
], ~" |& C: R$ }, N; M
end" R. [: a1 }. w. p6 A5 M* f& W
to check-death6 o; N9 C% F" A3 }6 _' ?
ask turtles [! {. h1 ]' x& Z4 \
if energy <= 0 [ die ]
& M0 G2 p( |! ~ ]
3 I6 R' f! B' R2 ^% }; o' @& u) Qend
9 ~: O" X% h, k4 b$ uto regrow-grass3 I$ r; R2 ]- o4 Z; v6 ~
ask patches [& \: D6 r, n! d1 g5 |
if random 100 < 3 [ set pcolor green ]/ V" E( v: s0 ]6 [
]
/ l0 Z: a+ _0 `2 ?end4 {/ o7 D* |! Q
to do-plots
6 u( o, @4 f* w* ]) { set-current-plot "Totals"- X5 o% r- v4 Q7 X8 q1 T6 X; i
set-current-plot-pen "turtles"
, h! f) j+ l- f. z& b8 T6 Q plot count turtles
8 M5 j! M) p* ? set-current-plot-pen "grass"
+ B* J0 u& d( `$ ^9 i7 j plot count patches with [pcolor = green]
! \- ]9 i8 w% M1 D& O5 `3 @end8 M3 j( ^6 N7 _$ O2 g/ s, s) I4 ]+ H. ~
可是运行时提示no such plot: "Totals"9 _. x& p- T% A. }4 N# O" B
error while observer running SET-CURRENT-PLOT
8 p3 S. O" p9 k: A called by procedure DO-PLOTS7 o! N: c4 {+ U3 O0 M1 `! P, E
called by procedure SETUP
9 B2 w: \ f/ J4 Q+ W9 Z called by 按钮 'setup'
9 K$ N# }% C1 u3 g求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
