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Flocking/Basic/Old/Flock2
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 » Recent acquisitions » Acorn ADFS disks » adfs_ArchimedesWorld_15_3.adf » !AcornAns_AcornAns |
| Filename: | Flocking/Basic/Old/Flock2 |
| Read OK: | ✔ |
| File size: | 0774 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
� Not flocking working
:
n%=16
(G%=4
2:
<%RC%=5*G% :� collision distance
F-RM%=8*G% :� velocity matching distance
P!RL%=40*G% :� local distance
Z:
dRL2%=RL%*RL%
n� x(n%-1), y(n%-1)
x� xn(n%-1), yn(n%-1)
�� vx(n%-1), vy(n%-1)
�� dm(n%-1), im%(n%-1)
�� ax(n%-1), ay(n%-1)
�� avx(n%-1), avy(n%-1)
�� ac%(n%-1)
�:
�
� 18:�
�ȑ 640,512
�:
�
p%=125*G%
� v%=G%*2
�� i%=0 � n%-1
� x(i%)=�(p%)-p%/2
y(i%)=�(p%)-p%/2
vx(i%)=�(1)*v%
vy(i%)=�(1)*v%-v%/2
"�
,:
6�
@
� �-99 �
J Ȗ
T �
^ � i%=0 � n%-1
h � 69,x(i%),y(i%)
r �
|
�move
� � i%=0 � n%-1
� x(i%)=xn(i%)
� y(i%)=yn(i%)
� �
�� 0
�:
��
�:
�:
� � �move
�:
�� i%=0 � n%-1
� dm(i%)=1E20
ax(i%)=x(i%)
ay(i%)=y(i%)
avx(i%)=vx(i%)
& avy(i%)=vy(i%)
0 ac%(i%)=1
:�
D:
N� i%=0 � n%-2
X � j%=i%+1 � n%-1
bC d = (x(i%)-x(j%))*(x(i%)-x(j%)) + (y(i%)-y(j%))*(y(i%)-y(j%))
l$ � d<dm(i%) dm(i%)=d:im%(i%)=j%
v$ � d<dm(j%) dm(j%)=d:im%(j%)=i%
� � d<RL2% �
�M ax(i%)+=x(j%):ay(i%)+=y(j%):avx(i%)+=vx(j%):avy(i%)+=vy(j%):ac%(i%)+=1
�M ax(j%)+=x(i%):ay(j%)+=y(i%):avx(j%)+=vx(i%):avy(j%)+=vy(i%):ac%(j%)+=1
� �
� �
��
�:
�� i%=0 � n%-1
� � dm(i%)>=RL2% �
�+ ax(i%)+=x(im%(i%)):ay(i%)+=y(im%(i%))
�/ avx(i%)+=vx(im%(i%)):avy(i%)+=vy(im%(i%))
� ac%(i%)+=1
� �
d=�dm(i%):� d<0.001 d=0.001
� d<RC% �
u=(x(im%(i%))-x(i%))/d
v=(y(im%(i%))-y(i%))/d
* vx=-u*G%
4 vy=-v*G%
> �
H � d<RM% �
R vx=avx(i%)/ac%(i%)
\ vy=avy(i%)/a P:iK� """(i%)/4"��%(9,9,9n%-1)n9�n
+9,�%
�
in
hhhGG9,j%)=8:99(ng x x �1
� � � %-1� %)
�%
+%R�i%)=x � �ololo1
�-9-9-io����vy=avy=av:
pv av av � :
4���y(i
+
:�:�:ZP: -9-9-0 n%-1)nny(i%))y(i%))yxnxnx�x�v(:�:�: �:e
�9,�%99,�%99*G% x( x( """ d="�2
D�
�
�p%)p%)p
�
�
ststs+=y+=y+(p� �
�yn(6%)>%)> 00000000 0d 00 0a 1a f4 20 4e 6f 74 20 66 6c 6f 63 6b 69 |..... Not flocki| 00000010 6e 67 20 77 6f 72 6b 69 6e 67 0d 00 14 05 3a 0d |ng working....:.| 00000020 00 1e 09 6e 25 3d 31 36 0d 00 28 08 47 25 3d 34 |...n%=16..(.G%=4| 00000030 0d 00 32 05 3a 0d 00 3c 25 52 43 25 3d 35 2a 47 |..2.:..<%RC%=5*G| 00000040 25 20 20 20 20 3a f4 20 63 6f 6c 6c 69 73 69 6f |% :. collisio| 00000050 6e 20 64 69 73 74 61 6e 63 65 0d 00 46 2d 52 4d |n distance..F-RM| 00000060 25 3d 38 2a 47 25 20 20 20 20 3a f4 20 76 65 6c |%=8*G% :. vel| 00000070 6f 63 69 74 79 20 6d 61 74 63 68 69 6e 67 20 64 |ocity matching d| 00000080 69 73 74 61 6e 63 65 0d 00 50 21 52 4c 25 3d 34 |istance..P!RL%=4| 00000090 30 2a 47 25 20 20 20 3a f4 20 6c 6f 63 61 6c 20 |0*G% :. local | 000000a0 64 69 73 74 61 6e 63 65 0d 00 5a 05 3a 0d 00 64 |distance..Z.:..d| 000000b0 10 52 4c 32 25 3d 52 4c 25 2a 52 4c 25 0d 00 6e |.RL2%=RL%*RL%..n| 000000c0 16 de 20 78 28 6e 25 2d 31 29 2c 20 79 28 6e 25 |.. x(n%-1), y(n%| 000000d0 2d 31 29 0d 00 78 18 de 20 78 6e 28 6e 25 2d 31 |-1)..x.. xn(n%-1| 000000e0 29 2c 20 79 6e 28 6e 25 2d 31 29 0d 00 82 18 de |), yn(n%-1).....| 000000f0 20 76 78 28 6e 25 2d 31 29 2c 20 76 79 28 6e 25 | vx(n%-1), vy(n%| 00000100 2d 31 29 0d 00 8c 19 de 20 64 6d 28 6e 25 2d 31 |-1)..... dm(n%-1| 00000110 29 2c 20 69 6d 25 28 6e 25 2d 31 29 0d 00 96 18 |), im%(n%-1)....| 00000120 de 20 61 78 28 6e 25 2d 31 29 2c 20 61 79 28 6e |. ax(n%-1), ay(n| 00000130 25 2d 31 29 0d 00 a0 1a de 20 61 76 78 28 6e 25 |%-1)..... avx(n%| 00000140 2d 31 29 2c 20 61 76 79 28 6e 25 2d 31 29 0d 00 |-1), avy(n%-1)..| 00000150 aa 0f de 20 61 63 25 28 6e 25 2d 31 29 0d 00 b4 |... ac%(n%-1)...| 00000160 05 3a 0d 00 be 0a eb 20 31 38 3a 87 0d 00 c8 0e |.:..... 18:.....| 00000170 c8 91 20 36 34 30 2c 35 31 32 0d 00 d2 05 3a 0d |.. 640,512....:.| 00000180 00 dc 0d 70 25 3d 31 32 35 2a 47 25 0d 00 e6 0b |...p%=125*G%....| 00000190 76 25 3d 47 25 2a 32 0d 00 f0 11 e3 20 69 25 3d |v%=G%*2..... i%=| 000001a0 30 20 b8 20 6e 25 2d 31 0d 00 fa 15 20 78 28 69 |0 . n%-1.... x(i| 000001b0 25 29 3d b3 28 70 25 29 2d 70 25 2f 32 0d 01 04 |%)=.(p%)-p%/2...| 000001c0 15 20 79 28 69 25 29 3d b3 28 70 25 29 2d 70 25 |. y(i%)=.(p%)-p%| 000001d0 2f 32 0d 01 0e 13 20 76 78 28 69 25 29 3d b3 28 |/2.... vx(i%)=.(| 000001e0 31 29 2a 76 25 0d 01 18 18 20 76 79 28 69 25 29 |1)*v%.... vy(i%)| 000001f0 3d b3 28 31 29 2a 76 25 2d 76 25 2f 32 0d 01 22 |=.(1)*v%-v%/2.."| 00000200 05 ed 0d 01 2c 05 3a 0d 01 36 05 f5 0d 01 40 0d |....,.:..6....@.| 00000210 20 e7 20 a6 2d 39 39 20 f9 0d 01 4a 07 20 c8 96 | . .-99 ...J. ..| 00000220 0d 01 54 06 20 db 0d 01 5e 12 20 e3 20 69 25 3d |..T. ...^. . i%=| 00000230 30 20 b8 20 6e 25 2d 31 0d 01 68 16 20 20 f0 20 |0 . n%-1..h. . | 00000240 36 39 2c 78 28 69 25 29 2c 79 28 69 25 29 0d 01 |69,x(i%),y(i%)..| 00000250 72 06 20 ed 0d 01 7c 0a 20 f2 6d 6f 76 65 0d 01 |r. ...|. .move..| 00000260 86 12 20 e3 20 69 25 3d 30 20 b8 20 6e 25 2d 31 |.. . i%=0 . n%-1| 00000270 0d 01 90 12 20 20 78 28 69 25 29 3d 78 6e 28 69 |.... x(i%)=xn(i| 00000280 25 29 0d 01 9a 12 20 20 79 28 69 25 29 3d 79 6e |%).... y(i%)=yn| 00000290 28 69 25 29 0d 01 a4 06 20 ed 0d 01 ae 07 fd 20 |(i%).... ...... | 000002a0 30 0d 01 b8 05 3a 0d 01 c2 05 e0 0d 01 cc 05 3a |0....:.........:| 000002b0 0d 01 d6 05 3a 0d 01 e0 0b dd 20 f2 6d 6f 76 65 |....:..... .move| 000002c0 0d 01 ea 05 3a 0d 01 f4 11 e3 20 69 25 3d 30 20 |....:..... i%=0 | 000002d0 b8 20 6e 25 2d 31 0d 01 fe 10 20 64 6d 28 69 25 |. n%-1.... dm(i%| 000002e0 29 3d 31 45 32 30 0d 02 08 11 20 61 78 28 69 25 |)=1E20.... ax(i%| 000002f0 29 3d 78 28 69 25 29 0d 02 12 11 20 61 79 28 69 |)=x(i%).... ay(i| 00000300 25 29 3d 79 28 69 25 29 0d 02 1c 13 20 61 76 78 |%)=y(i%).... avx| 00000310 28 69 25 29 3d 76 78 28 69 25 29 0d 02 26 13 20 |(i%)=vx(i%)..&. | 00000320 61 76 79 28 69 25 29 3d 76 79 28 69 25 29 0d 02 |avy(i%)=vy(i%)..| 00000330 30 0e 20 61 63 25 28 69 25 29 3d 31 0d 02 3a 05 |0. ac%(i%)=1..:.| 00000340 ed 0d 02 44 05 3a 0d 02 4e 11 e3 20 69 25 3d 30 |...D.:..N.. i%=0| 00000350 20 b8 20 6e 25 2d 32 0d 02 58 15 20 e3 20 6a 25 | . n%-2..X. . j%| 00000360 3d 69 25 2b 31 20 b8 20 6e 25 2d 31 0d 02 62 43 |=i%+1 . n%-1..bC| 00000370 20 20 64 20 3d 20 28 78 28 69 25 29 2d 78 28 6a | d = (x(i%)-x(j| 00000380 25 29 29 2a 28 78 28 69 25 29 2d 78 28 6a 25 29 |%))*(x(i%)-x(j%)| 00000390 29 20 2b 20 28 79 28 69 25 29 2d 79 28 6a 25 29 |) + (y(i%)-y(j%)| 000003a0 29 2a 28 79 28 69 25 29 2d 79 28 6a 25 29 29 0d |)*(y(i%)-y(j%)).| 000003b0 02 6c 24 20 20 e7 20 64 3c 64 6d 28 69 25 29 20 |.l$ . d<dm(i%) | 000003c0 64 6d 28 69 25 29 3d 64 3a 69 6d 25 28 69 25 29 |dm(i%)=d:im%(i%)| 000003d0 3d 6a 25 0d 02 76 24 20 20 e7 20 64 3c 64 6d 28 |=j%..v$ . d<dm(| 000003e0 6a 25 29 20 64 6d 28 6a 25 29 3d 64 3a 69 6d 25 |j%) dm(j%)=d:im%| 000003f0 28 6a 25 29 3d 69 25 0d 02 80 10 20 20 e7 20 64 |(j%)=i%.... . d| 00000400 3c 52 4c 32 25 20 8c 0d 02 8a 4d 20 20 20 61 78 |<RL2% ....M ax| 00000410 28 69 25 29 2b 3d 78 28 6a 25 29 3a 61 79 28 69 |(i%)+=x(j%):ay(i| 00000420 25 29 2b 3d 79 28 6a 25 29 3a 61 76 78 28 69 25 |%)+=y(j%):avx(i%| 00000430 29 2b 3d 76 78 28 6a 25 29 3a 61 76 79 28 69 25 |)+=vx(j%):avy(i%| 00000440 29 2b 3d 76 79 28 6a 25 29 3a 61 63 25 28 69 25 |)+=vy(j%):ac%(i%| 00000450 29 2b 3d 31 0d 02 94 4d 20 20 20 61 78 28 6a 25 |)+=1...M ax(j%| 00000460 29 2b 3d 78 28 69 25 29 3a 61 79 28 6a 25 29 2b |)+=x(i%):ay(j%)+| 00000470 3d 79 28 69 25 29 3a 61 76 78 28 6a 25 29 2b 3d |=y(i%):avx(j%)+=| 00000480 76 78 28 69 25 29 3a 61 76 79 28 6a 25 29 2b 3d |vx(i%):avy(j%)+=| 00000490 76 79 28 69 25 29 3a 61 63 25 28 6a 25 29 2b 3d |vy(i%):ac%(j%)+=| 000004a0 31 0d 02 9e 07 20 20 cd 0d 02 a8 06 20 ed 0d 02 |1.... ..... ...| 000004b0 b2 05 ed 0d 02 bc 05 3a 0d 02 c6 11 e3 20 69 25 |.......:..... i%| 000004c0 3d 30 20 b8 20 6e 25 2d 31 0d 02 d0 15 20 e7 20 |=0 . n%-1.... . | 000004d0 64 6d 28 69 25 29 3e 3d 52 4c 32 25 20 8c 0d 02 |dm(i%)>=RL2% ...| 000004e0 da 2b 20 20 61 78 28 69 25 29 2b 3d 78 28 69 6d |.+ ax(i%)+=x(im| 000004f0 25 28 69 25 29 29 3a 61 79 28 69 25 29 2b 3d 79 |%(i%)):ay(i%)+=y| 00000500 28 69 6d 25 28 69 25 29 29 0d 02 e4 2f 20 20 61 |(im%(i%)).../ a| 00000510 76 78 28 69 25 29 2b 3d 76 78 28 69 6d 25 28 69 |vx(i%)+=vx(im%(i| 00000520 25 29 29 3a 61 76 79 28 69 25 29 2b 3d 76 79 28 |%)):avy(i%)+=vy(| 00000530 69 6d 25 28 69 25 29 29 0d 02 ee 10 20 20 61 63 |im%(i%)).... ac| 00000540 25 28 69 25 29 2b 3d 31 0d 02 f8 06 20 cd 0d 03 |%(i%)+=1.... ...| 00000550 02 20 20 64 3d b6 64 6d 28 69 25 29 3a e7 20 64 |. d=.dm(i%):. d| 00000560 3c 30 2e 30 30 31 20 64 3d 30 2e 30 30 31 0d 03 |<0.001 d=0.001..| 00000570 0c 0e 20 e7 20 64 3c 52 43 25 20 8c 0d 03 16 1c |.. . d<RC% .....| 00000580 20 20 75 3d 28 78 28 69 6d 25 28 69 25 29 29 2d | u=(x(im%(i%))-| 00000590 78 28 69 25 29 29 2f 64 0d 03 20 1c 20 20 76 3d |x(i%))/d.. . v=| 000005a0 28 79 28 69 6d 25 28 69 25 29 29 2d 79 28 69 25 |(y(im%(i%))-y(i%| 000005b0 29 29 2f 64 0d 03 2a 0e 20 20 76 78 3d 2d 75 2a |))/d..*. vx=-u*| 000005c0 47 25 0d 03 34 0e 20 20 76 79 3d 2d 76 2a 47 25 |G%..4. vy=-v*G%| 000005d0 0d 03 3e 06 20 cc 0d 03 48 0f 20 20 e7 20 64 3c |..>. ...H. . d<| 000005e0 52 4d 25 20 8c 0d 03 52 19 20 20 20 76 78 3d 61 |RM% ...R. vx=a| 000005f0 76 78 28 69 25 29 2f 61 63 25 28 69 25 29 0d 03 |vx(i%)/ac%(i%)..| 00000600 5c 19 20 20 20 76 79 3d 61 76 79 28 69 25 29 2f |\. vy=avy(i%)/| 00000610 61 00 50 3a 69 4b f4 20 22 22 22 28 69 25 29 2f |a.P:iK. """(i%)/| 00000620 34 22 ac ac 25 28 39 2c 39 2c 39 6e 25 2d 31 29 |4"..%(9,9,9n%-1)| 00000630 6e 39 06 86 6e 0d 02 2b 06 39 2c 80 25 0d ed 0d |n9..n..+.9,.%...| 00000640 01 69 6e 00 0a 00 0a 00 68 68 68 08 47 08 47 08 |.in.....hhh.G.G.| 00000650 39 2c 6a 25 29 3d 38 3a 39 39 28 6e 67 20 78 20 |9,j%)=8:99(ng x | 00000660 78 20 86 31 0d 02 f8 20 b8 20 20 b8 20 20 25 2d |x .1... . . %-| 00000670 31 de 20 25 29 0d d0 25 0d 02 2b 25 03 52 82 11 |1. %)..%..+%.R..| 00000680 69 25 29 3d 78 20 e7 20 20 f2 6f 6c 6f 6c 6f 31 |i%)=x . .ololo1| 00000690 0d 02 f8 2d 39 2d 39 2d 02 12 69 6f 88 88 88 07 |...-9-9-..io....| 000006a0 fd 76 79 3d 61 76 79 3d 61 76 05 3a 0d 00 03 70 |.vy=avy=av.:...p| 000006b0 76 13 20 61 76 13 20 61 76 13 0e 20 20 05 aa 00 |v. av. av.. ...| 000006c0 13 00 00 01 0e 05 3a 0d 34 0e 88 88 88 79 28 69 |......:.4....y(i| 000006d0 0d 02 2b 0d 3a 87 3a 87 3a 5a 05 50 3a 11 20 2d |..+.:.:.:Z.P:. -| 000006e0 39 2d 39 2d 30 20 6e 25 2d 31 29 6e 6e 79 28 69 |9-9-0 n%-1)nny(i| 000006f0 25 29 29 79 28 69 25 29 29 79 78 6e 78 6e 78 06 |%))y(i%))yxnxnx.| 00000700 9a 06 06 78 07 fd 76 28 06 3a 87 3a 87 3a 00 00 |...x..v(.:.:.:..| 00000710 01 b6 3a 65 0d 00 a1 39 2c 80 25 39 39 2c 80 25 |..:e...9,.%99,.%| 00000720 39 39 2a 47 25 20 78 28 20 78 28 20 22 05 22 05 |99*G% x( x( ".".| 00000730 22 20 20 64 3d 03 22 08 11 08 11 08 96 32 0d 00 |" d=."......2..| 00000740 44 96 0d 96 0d 96 70 25 29 70 25 29 70 0d 01 a4 |D.....p%)p%)p...| 00000750 0d 01 a4 0d 73 74 73 74 73 2b 3d 79 2b 3d 79 2b |....ststs+=y+=y+| 00000760 28 70 e6 0b 06 20 ed 0d d1 79 6e 28 01 36 25 29 |(p... ...yn(.6%)| 00000770 3e 25 29 3e |>%)>| 00000774
.