StarInfo/Adcock/Attraction

Home » Archimedes archive » Acorn User » AU 1996-12 B.adf » Regulars_2 » StarInfo/Adcock/Attraction

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk:	Home » Archimedes archive » Acorn User » AU 1996-12 B.adf » Regulars_2
Filename:	StarInfo/Adcock/Attraction
Read OK:	✔
File size:	0584 bytes
Load address:	0000
Exec address:	0000

File contents

   10MODE 1
   20COLOUR 2,255,192,255
   30COLOUR 1,255,255,255
   40B=1
   50N=15
   60CLOSENESS=50
   70DIM X(N),Y(N),XP(N),YP(N),C(N)
   80FOR L = 1 TO N
   90X(L)=640
  100Y(L)=512
  110C(L)=1
  120NEXT L
  130A=0
  140MOUSE MX,MY,MB
  150:
  160REPEAT
  170MOUSE MX,MY,MB
  180IF MB<>0 THEN GCOL 1:CIRCLE MX,MY,25:LINE MX-22,MY,MX+25,MY:LINE MX,MY-22,MX,MY+25
  190IF MB=1 THEN FOR L = 1 TO N:X(L)=640:Y(L)=512:C(L)=1:NEXT L
  200:
  210FOR L = 1 TO N
  220:
  230CO=FNClosest(L)
  240DISTANCE=SQR((X(CO)-X(L))^2+(Y(CO)-Y(L))^2)
  250IF DISTANCE>CLOSENESS THEN C(L)=2:XP(L)=XP(L)+SGN(X(CO)-X(L)):YP(L)=YP(L)+SGN(Y(CO)-Y(L))
  260:
  270GCOL C(L)
  280MOVE X(L),Y(L)
  290X(L)=X(L)+XP(L)*2
  300Y(L)=Y(L)+YP(L)*2
  310DRAW X(L),Y(L)
  320XP(L)=XP(L)+RND(4)-RND(4)
  330YP(L)=YP(L)+RND(4)-RND(4)
  340IF X(L)>1280 OR X(L)<0 THEN XP(L)=-XP(L)+RND(5)-RND(5):YP(L)=YP(L)+RND(2)-RND(2)
  350IF Y(L)>1024 OR Y(L)<0 THEN YP(L)=-YP(L)+RND(5)-RND(5):XP(L)=XP(L)+RND(2)-RND(2)
  360IF XP(L)>10 OR XP(L)<-10 THEN XP(L)=INT(0.8*XP(L))
  370IF YP(L)>10 OR YP(L)<-10 THEN YP(L)=INT(0.8*YP(L))
  380:
  390IF MB=4 XP(L)=XP(L)+2*SGN(MX-X(L)):YP(L)=YP(L)+2*SGN(MY-Y(L))
  400IF MB=2 AND SQR((MX-X(L))^2+(MY-Y(L))^2)<100 THEN XP(L)=XP(L)-2*SGN(MX-X(L)):YP(L)=YP(L)-2*SGN(MY-Y(L))
  410:
  420IF DISTANCE<CLOSENESS THEN C(L)=1:XP(L)=XP(L)*0.9:YP(L)=YP(L)*0.9
  430:
  440NEXT L
  450SYS 6,19
  460SYS 6,112,B
  470SYS 6,113,3-B
  480B=3-B
  490CLS
  500UNTIL FALSE
  510END
  520:
  530:
  540:
  550DEF FNClosest(M)
  560LOCAL SMALLEST_DIS,R,L,DIS
  570SMALLEST_DIS=999999
  580R=0
  590FOR L = 1 TO N
  600IF L<>M THEN
  610 DIS=SQR((X(L)-X(M))^2+(Y(L)-Y(M))^2)
  620 IF DIS<SMALLEST_DIS THEN SMALLEST_DIS=DIS:R=L
  630ENDIF
  640NEXT L
  650=R
  660


� 1
� 2,255,192,255
� 1,255,255,255
(B=1
2N=15
<CLOSENESS=50
F � X(N),Y(N),XP(N),YP(N),C(N)
P� L = 1 � N
ZX(L)=640
dY(L)=512
n
C(L)=1
x� L
�A=0
�ȗ MX,MY,MB
�:
��
�ȗ MX,MY,MB
�E� MB<>0 � � 1:ȏ MX,MY,25:� MX-22,MY,MX+25,MY:� MX,MY-22,MX,MY+25
�5� MB=1 � � L = 1 � N:X(L)=640:Y(L)=512:C(L)=1:� L
�:
�� L = 1 � N
�:
�CO=�Closest(L)
�-DISTANCE=�((X(CO)-X(L))^2+(Y(CO)-Y(L))^2)
�U� DISTANCE>CLOSENESS � C(L)=2:XP(L)=XP(L)+�(X(CO)-X(L)):YP(L)=YP(L)+�(Y(CO)-Y(L))
:

� C(L)
� X(L),Y(L)
"X(L)=X(L)+XP(L)*2
,Y(L)=Y(L)+YP(L)*2
6� X(L),Y(L)
@XP(L)=XP(L)+�(4)-�(4)
JYP(L)=YP(L)+�(4)-�(4)
TG� X(L)>1280 � X(L)<0 � XP(L)=-XP(L)+�(5)-�(5):YP(L)=YP(L)+�(2)-�(2)
^G� Y(L)>1024 � Y(L)<0 � YP(L)=-YP(L)+�(5)-�(5):XP(L)=XP(L)+�(2)-�(2)
h/� XP(L)>10 � XP(L)<-10 � XP(L)=�(0.8*XP(L))
r/� YP(L)>10 � YP(L)<-10 � YP(L)=�(0.8*YP(L))
|:
�<� MB=4 XP(L)=XP(L)+2*�(MX-X(L)):YP(L)=YP(L)+2*�(MY-Y(L))
�_� MB=2 � �((MX-X(L))^2+(MY-Y(L))^2)<100 � XP(L)=XP(L)-2*�(MX-X(L)):YP(L)=YP(L)-2*�(MY-Y(L))
�:
�A� DISTANCE<CLOSENESS � C(L)=1:XP(L)=XP(L)*0.9:YP(L)=YP(L)*0.9
�:
�� L
�ș 6,19
�ș 6,112,B
�ș 6,113,3-B
�	B=3-B
��
�� �
��
:
:
:
&� �Closest(M)
0� SMALLEST_DIS,R,L,DIS
:SMALLEST_DIS=999999
DR=0
N� L = 1 � N
X� L<>M �
b' DIS=�((X(L)-X(M))^2+(Y(L)-Y(M))^2)
l. � DIS<SMALLEST_DIS � SMALLEST_DIS=DIS:R=L
v�
�� L
�=R
�
�

00000000  0d 00 0a 07 eb 20 31 0d  00 14 13 fb 20 32 2c 32  |..... 1..... 2,2|
00000010  35 35 2c 31 39 32 2c 32  35 35 0d 00 1e 13 fb 20  |55,192,255..... |
00000020  31 2c 32 35 35 2c 32 35  35 2c 32 35 35 0d 00 28  |1,255,255,255..(|
00000030  07 42 3d 31 0d 00 32 08  4e 3d 31 35 0d 00 3c 10  |.B=1..2.N=15..<.|
00000040  43 4c 4f 53 45 4e 45 53  53 3d 35 30 0d 00 46 20  |CLOSENESS=50..F |
00000050  de 20 58 28 4e 29 2c 59  28 4e 29 2c 58 50 28 4e  |. X(N),Y(N),XP(N|
00000060  29 2c 59 50 28 4e 29 2c  43 28 4e 29 0d 00 50 0f  |),YP(N),C(N)..P.|
00000070  e3 20 4c 20 3d 20 31 20  b8 20 4e 0d 00 5a 0c 58  |. L = 1 . N..Z.X|
00000080  28 4c 29 3d 36 34 30 0d  00 64 0c 59 28 4c 29 3d  |(L)=640..d.Y(L)=|
00000090  35 31 32 0d 00 6e 0a 43  28 4c 29 3d 31 0d 00 78  |512..n.C(L)=1..x|
000000a0  07 ed 20 4c 0d 00 82 07  41 3d 30 0d 00 8c 0f c8  |.. L....A=0.....|
000000b0  97 20 4d 58 2c 4d 59 2c  4d 42 0d 00 96 05 3a 0d  |. MX,MY,MB....:.|
000000c0  00 a0 05 f5 0d 00 aa 0f  c8 97 20 4d 58 2c 4d 59  |.......... MX,MY|
000000d0  2c 4d 42 0d 00 b4 45 e7  20 4d 42 3c 3e 30 20 8c  |,MB...E. MB<>0 .|
000000e0  20 e6 20 31 3a c8 8f 20  4d 58 2c 4d 59 2c 32 35  | . 1:.. MX,MY,25|
000000f0  3a 86 20 4d 58 2d 32 32  2c 4d 59 2c 4d 58 2b 32  |:. MX-22,MY,MX+2|
00000100  35 2c 4d 59 3a 86 20 4d  58 2c 4d 59 2d 32 32 2c  |5,MY:. MX,MY-22,|
00000110  4d 58 2c 4d 59 2b 32 35  0d 00 be 35 e7 20 4d 42  |MX,MY+25...5. MB|
00000120  3d 31 20 8c 20 e3 20 4c  20 3d 20 31 20 b8 20 4e  |=1 . . L = 1 . N|
00000130  3a 58 28 4c 29 3d 36 34  30 3a 59 28 4c 29 3d 35  |:X(L)=640:Y(L)=5|
00000140  31 32 3a 43 28 4c 29 3d  31 3a ed 20 4c 0d 00 c8  |12:C(L)=1:. L...|
00000150  05 3a 0d 00 d2 0f e3 20  4c 20 3d 20 31 20 b8 20  |.:..... L = 1 . |
00000160  4e 0d 00 dc 05 3a 0d 00  e6 12 43 4f 3d a4 43 6c  |N....:....CO=.Cl|
00000170  6f 73 65 73 74 28 4c 29  0d 00 f0 2d 44 49 53 54  |osest(L)...-DIST|
00000180  41 4e 43 45 3d b6 28 28  58 28 43 4f 29 2d 58 28  |ANCE=.((X(CO)-X(|
00000190  4c 29 29 5e 32 2b 28 59  28 43 4f 29 2d 59 28 4c  |L))^2+(Y(CO)-Y(L|
000001a0  29 29 5e 32 29 0d 00 fa  55 e7 20 44 49 53 54 41  |))^2)...U. DISTA|
000001b0  4e 43 45 3e 43 4c 4f 53  45 4e 45 53 53 20 8c 20  |NCE>CLOSENESS . |
000001c0  43 28 4c 29 3d 32 3a 58  50 28 4c 29 3d 58 50 28  |C(L)=2:XP(L)=XP(|
000001d0  4c 29 2b b4 28 58 28 43  4f 29 2d 58 28 4c 29 29  |L)+.(X(CO)-X(L))|
000001e0  3a 59 50 28 4c 29 3d 59  50 28 4c 29 2b b4 28 59  |:YP(L)=YP(L)+.(Y|
000001f0  28 43 4f 29 2d 59 28 4c  29 29 0d 01 04 05 3a 0d  |(CO)-Y(L))....:.|
00000200  01 0e 0a e6 20 43 28 4c  29 0d 01 18 0f ec 20 58  |.... C(L)..... X|
00000210  28 4c 29 2c 59 28 4c 29  0d 01 22 15 58 28 4c 29  |(L),Y(L)..".X(L)|
00000220  3d 58 28 4c 29 2b 58 50  28 4c 29 2a 32 0d 01 2c  |=X(L)+XP(L)*2..,|
00000230  15 59 28 4c 29 3d 59 28  4c 29 2b 59 50 28 4c 29  |.Y(L)=Y(L)+YP(L)|
00000240  2a 32 0d 01 36 0f df 20  58 28 4c 29 2c 59 28 4c  |*2..6.. X(L),Y(L|
00000250  29 0d 01 40 19 58 50 28  4c 29 3d 58 50 28 4c 29  |)..@.XP(L)=XP(L)|
00000260  2b b3 28 34 29 2d b3 28  34 29 0d 01 4a 19 59 50  |+.(4)-.(4)..J.YP|
00000270  28 4c 29 3d 59 50 28 4c  29 2b b3 28 34 29 2d b3  |(L)=YP(L)+.(4)-.|
00000280  28 34 29 0d 01 54 47 e7  20 58 28 4c 29 3e 31 32  |(4)..TG. X(L)>12|
00000290  38 30 20 84 20 58 28 4c  29 3c 30 20 8c 20 58 50  |80 . X(L)<0 . XP|
000002a0  28 4c 29 3d 2d 58 50 28  4c 29 2b b3 28 35 29 2d  |(L)=-XP(L)+.(5)-|
000002b0  b3 28 35 29 3a 59 50 28  4c 29 3d 59 50 28 4c 29  |.(5):YP(L)=YP(L)|
000002c0  2b b3 28 32 29 2d b3 28  32 29 0d 01 5e 47 e7 20  |+.(2)-.(2)..^G. |
000002d0  59 28 4c 29 3e 31 30 32  34 20 84 20 59 28 4c 29  |Y(L)>1024 . Y(L)|
000002e0  3c 30 20 8c 20 59 50 28  4c 29 3d 2d 59 50 28 4c  |<0 . YP(L)=-YP(L|
000002f0  29 2b b3 28 35 29 2d b3  28 35 29 3a 58 50 28 4c  |)+.(5)-.(5):XP(L|
00000300  29 3d 58 50 28 4c 29 2b  b3 28 32 29 2d b3 28 32  |)=XP(L)+.(2)-.(2|
00000310  29 0d 01 68 2f e7 20 58  50 28 4c 29 3e 31 30 20  |)..h/. XP(L)>10 |
00000320  84 20 58 50 28 4c 29 3c  2d 31 30 20 8c 20 58 50  |. XP(L)<-10 . XP|
00000330  28 4c 29 3d a8 28 30 2e  38 2a 58 50 28 4c 29 29  |(L)=.(0.8*XP(L))|
00000340  0d 01 72 2f e7 20 59 50  28 4c 29 3e 31 30 20 84  |..r/. YP(L)>10 .|
00000350  20 59 50 28 4c 29 3c 2d  31 30 20 8c 20 59 50 28  | YP(L)<-10 . YP(|
00000360  4c 29 3d a8 28 30 2e 38  2a 59 50 28 4c 29 29 0d  |L)=.(0.8*YP(L)).|
00000370  01 7c 05 3a 0d 01 86 3c  e7 20 4d 42 3d 34 20 58  |.|.:...<. MB=4 X|
00000380  50 28 4c 29 3d 58 50 28  4c 29 2b 32 2a b4 28 4d  |P(L)=XP(L)+2*.(M|
00000390  58 2d 58 28 4c 29 29 3a  59 50 28 4c 29 3d 59 50  |X-X(L)):YP(L)=YP|
000003a0  28 4c 29 2b 32 2a b4 28  4d 59 2d 59 28 4c 29 29  |(L)+2*.(MY-Y(L))|
000003b0  0d 01 90 5f e7 20 4d 42  3d 32 20 80 20 b6 28 28  |..._. MB=2 . .((|
000003c0  4d 58 2d 58 28 4c 29 29  5e 32 2b 28 4d 59 2d 59  |MX-X(L))^2+(MY-Y|
000003d0  28 4c 29 29 5e 32 29 3c  31 30 30 20 8c 20 58 50  |(L))^2)<100 . XP|
000003e0  28 4c 29 3d 58 50 28 4c  29 2d 32 2a b4 28 4d 58  |(L)=XP(L)-2*.(MX|
000003f0  2d 58 28 4c 29 29 3a 59  50 28 4c 29 3d 59 50 28  |-X(L)):YP(L)=YP(|
00000400  4c 29 2d 32 2a b4 28 4d  59 2d 59 28 4c 29 29 0d  |L)-2*.(MY-Y(L)).|
00000410  01 9a 05 3a 0d 01 a4 41  e7 20 44 49 53 54 41 4e  |...:...A. DISTAN|
00000420  43 45 3c 43 4c 4f 53 45  4e 45 53 53 20 8c 20 43  |CE<CLOSENESS . C|
00000430  28 4c 29 3d 31 3a 58 50  28 4c 29 3d 58 50 28 4c  |(L)=1:XP(L)=XP(L|
00000440  29 2a 30 2e 39 3a 59 50  28 4c 29 3d 59 50 28 4c  |)*0.9:YP(L)=YP(L|
00000450  29 2a 30 2e 39 0d 01 ae  05 3a 0d 01 b8 07 ed 20  |)*0.9....:..... |
00000460  4c 0d 01 c2 0b c8 99 20  36 2c 31 39 0d 01 cc 0e  |L...... 6,19....|
00000470  c8 99 20 36 2c 31 31 32  2c 42 0d 01 d6 10 c8 99  |.. 6,112,B......|
00000480  20 36 2c 31 31 33 2c 33  2d 42 0d 01 e0 09 42 3d  | 6,113,3-B....B=|
00000490  33 2d 42 0d 01 ea 05 db  0d 01 f4 07 fd 20 a3 0d  |3-B.......... ..|
000004a0  01 fe 05 e0 0d 02 08 05  3a 0d 02 12 05 3a 0d 02  |........:....:..|
000004b0  1c 05 3a 0d 02 26 11 dd  20 a4 43 6c 6f 73 65 73  |..:..&.. .Closes|
000004c0  74 28 4d 29 0d 02 30 1a  ea 20 53 4d 41 4c 4c 45  |t(M)..0.. SMALLE|
000004d0  53 54 5f 44 49 53 2c 52  2c 4c 2c 44 49 53 0d 02  |ST_DIS,R,L,DIS..|
000004e0  3a 17 53 4d 41 4c 4c 45  53 54 5f 44 49 53 3d 39  |:.SMALLEST_DIS=9|
000004f0  39 39 39 39 39 0d 02 44  07 52 3d 30 0d 02 4e 0f  |99999..D.R=0..N.|
00000500  e3 20 4c 20 3d 20 31 20  b8 20 4e 0d 02 58 0c e7  |. L = 1 . N..X..|
00000510  20 4c 3c 3e 4d 20 8c 0d  02 62 27 20 44 49 53 3d  | L<>M ...b' DIS=|
00000520  b6 28 28 58 28 4c 29 2d  58 28 4d 29 29 5e 32 2b  |.((X(L)-X(M))^2+|
00000530  28 59 28 4c 29 2d 59 28  4d 29 29 5e 32 29 0d 02  |(Y(L)-Y(M))^2)..|
00000540  6c 2e 20 e7 20 44 49 53  3c 53 4d 41 4c 4c 45 53  |l. . DIS<SMALLES|
00000550  54 5f 44 49 53 20 8c 20  53 4d 41 4c 4c 45 53 54  |T_DIS . SMALLEST|
00000560  5f 44 49 53 3d 44 49 53  3a 52 3d 4c 0d 02 76 05  |_DIS=DIS:R=L..v.|
00000570  cd 0d 02 80 07 ed 20 4c  0d 02 8a 06 3d 52 0d 02  |...... L....=R..|
00000580  94 04 0d ff                                       |....|
00000584

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