我编的程序如下turtles-own [energy]# T5 \. E7 p0 A
to setup
/ D; y4 y+ d0 Y5 n/ ^! J3 h1 V clear-all! d! D: B/ w7 Z' `# {2 ?. \! I9 I
setup-patches
! i% i% t# k% p6 f create-turtles 1004 _; f7 l7 q) B% m
do-plots
* y% }$ ~3 u: {; h: l4 @ ask turtles [ setxy random-xcor random-ycor ]% k. B) |4 j- s& ]3 T8 G: [
end& q3 o: ^- K# _. ~* J
to go- _0 x5 N, P0 v8 T. V7 e# o/ s
move-turtles" L1 L0 z$ Y' b1 p* ?0 B. P
eat-grass$ ]; S5 c' R8 n* I% ~
reproduce
& g- w+ _# q) Q# V- n check-death; t {% q, o. s
regrow-grass
3 x2 r1 }2 t0 k& @4 i; q F& x1 [ do-plots
, M" A; m# {7 q8 b, [end
`8 C* n) {3 {to move-turtles
9 B7 G9 D# S' S' ~- D ask turtles [) n- r! }/ y) D+ [: S- ^$ o5 U
right random 360 k) P. w5 { L( s0 n, n
forward 1
! v* D5 t# z' d' h set energy energy - 1( c1 x7 p! @& T/ P5 p
]
5 G7 s# Q- h! v, a% N1 Qend7 q( @5 j+ H, g4 _ n! C/ a
to setup-patches) j& l- X; X% u4 c7 d3 B% Y
ask patches [ set pcolor green ]
; T" S( o3 a9 ~( ~ Q% E; r( Fend+ d/ W* a& ` a
to setup-turtles/ E" n2 B6 C9 q3 A
create-turtles 100, ^' C: }0 z' ^5 B5 o
ask turtles [ setxy random-xcor random-ycor ]6 ]4 j7 M+ K6 l9 ~
end' @2 p9 I; E- H4 E2 m2 e/ a$ P
to eat-grass
, f0 [$ A% y0 G* X: X ask turtles [# c' h% p2 _7 z8 p+ I9 N) `
if pcolor = green [
$ n$ c7 s1 b/ H' J& v set pcolor black
: z5 N: z# d) c! ?7 T) X% f' o set energy (energy + 10), ~: t* ~5 s( X7 v7 |
]
2 q. V! m" f0 b) W" d8 F) _ ifelse show-energy?
7 K! I q9 p' T+ X" T% G$ O; _' C/ ^ [ set label energy ]- a1 W2 O1 `+ W# ~6 X% _3 p
[ set label "" ] s3 P3 p0 ^& Q8 {4 R, k' c
]
% s5 O# s% K1 N: x9 S% \0 uend" K' o5 W `% k2 {7 ~
to reproduce
) Q; K$ h& j) C9 v' e ask turtles [8 C/ {& l3 K( @) i) d, i" X, r8 h- c) O( j
if energy > 50 [& R1 S9 A4 S& s7 v" d
set energy energy - 50
& @; e' m# @" q hatch 1 [ set energy 50 ]* }7 Y' O8 N5 V2 B
]
. ?6 X7 k. X5 r ]
1 r+ n7 }" t4 d' W/ V+ Z$ J: oend
- x( o( O. _/ l1 nto check-death
# P* y, I$ z# C1 o$ V6 e ask turtles [
6 F+ Q( f2 o# ^* |; m; G3 y if energy <= 0 [ die ]
# L" ^8 L0 l* v- p4 ?0 W* `" B h ]
, p# ?; H/ K1 o) L9 Z: Iend
6 x( x4 X7 M7 u6 Pto regrow-grass' _) A0 u% {; e( O
ask patches [) b7 }7 S; S7 \9 V
if random 100 < 3 [ set pcolor green ]
8 S( _3 |1 @3 l% \* a! A; } ]
# k; `+ H" p! Send; z3 r$ ?, q) K$ Q, W
to do-plots
$ L+ A# a" y0 [, i% J/ ~, V L; z set-current-plot "Totals"
) |5 h7 J' @3 }+ G$ i* y set-current-plot-pen "turtles"
! J8 |6 V* M/ M; W+ L plot count turtles7 P- {7 t4 v( f6 D: F8 ?, W
set-current-plot-pen "grass"0 i7 @' J/ @" M. E& @
plot count patches with [pcolor = green]8 L! d' F" i' [+ N
end J$ m5 s6 O7 @7 ~ G2 @; B; O
可是运行时提示no such plot: "Totals"9 M" b. D2 ]' i) E8 U- @1 h
error while observer running SET-CURRENT-PLOT
, Y( I: n: z. i, m! j& H4 r called by procedure DO-PLOTS5 ~# s8 S# _, s% r3 [
called by procedure SETUP/ R) ?+ b3 q0 O8 s" z
called by 按钮 'setup'
, i% U7 Z& c* a$ S w- z ~; s0 q求大神解答啊 |
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楼主
发表于 2013-5-29 00:25:38
