Home » Archimedes archive » Archimedes World » AW-1996-12.adf » !AcornAns_AcornAns » December/Collide

December/Collide

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 » Archimedes World » AW-1996-12.adf » !AcornAns_AcornAns
Filename: December/Collide
Read OK:
File size: 0430 bytes
Load address: 0000
Exec address: 0000
File contents
   10REM >Collide
   20:
   30r1=32
   40m1=r1*r1
   50x1=0:y1=500-r1
   60vx1=12:vy1=0
   70r2=48
   80m2=r2*r2
   90x2=580:y2=530-r2
  100vx2=0:vy2=0
  110e=1
  120:
  130a1=(m1-m2*e)/(m1+m2)
  140a2=(m2-m1*e)/(m1+m2)
  150b1=m1*(1+e)/(m1+m2)
  160b2=m2*(1+e)/(m1+m2)
  170:
  180PROCreadmonitortype
  190MODE mo%
  200REPEAT
  210 WAIT
  220 CLS
  230 CIRCLE x1+r1,y1+r1,r1
  240 CIRCLE x2+r2,y2+r2,r2
  250 x1+=vx1:y1+=vy1
  260 x2+=vx2:y2+=vy2
  270 tx=x2-x1+r2-r1:ty=y2-y1+r2-r1
  280 IF ABS(tx)<=(r1+r2) AND ABS(ty)<=(r1+r2) THEN
  290  txs=tx*tx:tys=ty*ty
  300  ds=txs+tys
  310  IF ds<=(r1+r2)*(r1+r2) THEN
  320   x1-=vx1:y1-=vy1
  330   x2-=vx2:y2-=vy2
  340   txy=tx*ty
  350   txs=txs/ds
  360   tys=tys/ds
  370   txy=txy/ds
  380   dy=txy*(vy2-vy1)
  390   dx=txy*(vx2-vx1)
  400   wx1 = (a1*txs+tys)*vx1 + b2*(txs*vx2+dy)
  410   wy1 = (a1*tys+txs)*vy1 + b2*(tys*vy2+dx)
  420   wx2 = (a2*txs+tys)*vx2 + b1*(txs*vx1-dy)
  430   wy2 = (a2*tys+txs)*vy2 + b1*(tys*vy1-dx)
  440   vx1 = wx1
  450   vy1 = wy1
  460   vx2 = wx2
  470   vy2 = wy2
  480  ENDIF
  490 ENDIF
  500UNTIL FALSE
  510END
  520:
  530DEF PROCreadmonitortype
  540SYS "OS_Byte",161,133 TO ,,type%
  550type%=(type% AND 12) DIV 4
  560IF type%=1 mo%=18 ELSE mo%=0
  570ENDPROC

� >Collide
:
	r1=32
(m1=r1*r1
2x1=0:y1=500-r1
<vx1=12:vy1=0
F	r2=48
Pm2=r2*r2
Zx2=580:y2=530-r2
dvx2=0:vy2=0
ne=1
x:
�a1=(m1-m2*e)/(m1+m2)
�a2=(m2-m1*e)/(m1+m2)
�b1=m1*(1+e)/(m1+m2)
�b2=m2*(1+e)/(m1+m2)
�:
��readmonitortype
�	� mo%
��
� Ȗ
� �
� ȏ x1+r1,y1+r1,r1
� ȏ x2+r2,y2+r2,r2
� x1+=vx1:y1+=vy1
 x2+=vx2:y2+=vy2
" tx=x2-x1+r2-r1:ty=y2-y1+r2-r1
( � �(tx)<=(r1+r2) � �(ty)<=(r1+r2) �
"  txs=tx*tx:tys=ty*ty
,  ds=txs+tys
6  � ds<=(r1+r2)*(r1+r2) �
@   x1-=vx1:y1-=vy1
J   x2-=vx2:y2-=vy2
T   txy=tx*ty
^   txs=txs/ds
h   tys=tys/ds
r   txy=txy/ds
|   dy=txy*(vy2-vy1)
�   dx=txy*(vx2-vx1)
�/   wx1 = (a1*txs+tys)*vx1 + b2*(txs*vx2+dy)
�/   wy1 = (a1*tys+txs)*vy1 + b2*(tys*vy2+dx)
�/   wx2 = (a2*txs+tys)*vx2 + b1*(txs*vx1-dy)
�/   wy2 = (a2*tys+txs)*vy2 + b1*(tys*vy1-dx)
�   vx1 = wx1
�   vy1 = wy1
�   vx2 = wx2
�   vy2 = wy2
�  �
� �
�� �
��
:
� �readmonitortype
"ș "OS_Byte",161,133 � ,,type%
&type%=(type% � 12) � 4
0� type%=1 mo%=18 � mo%=0
:�
�
00000000  0d 00 0a 0e f4 20 3e 43  6f 6c 6c 69 64 65 0d 00  |..... >Collide..|
00000010  14 05 3a 0d 00 1e 09 72  31 3d 33 32 0d 00 28 0c  |..:....r1=32..(.|
00000020  6d 31 3d 72 31 2a 72 31  0d 00 32 12 78 31 3d 30  |m1=r1*r1..2.x1=0|
00000030  3a 79 31 3d 35 30 30 2d  72 31 0d 00 3c 10 76 78  |:y1=500-r1..<.vx|
00000040  31 3d 31 32 3a 76 79 31  3d 30 0d 00 46 09 72 32  |1=12:vy1=0..F.r2|
00000050  3d 34 38 0d 00 50 0c 6d  32 3d 72 32 2a 72 32 0d  |=48..P.m2=r2*r2.|
00000060  00 5a 14 78 32 3d 35 38  30 3a 79 32 3d 35 33 30  |.Z.x2=580:y2=530|
00000070  2d 72 32 0d 00 64 0f 76  78 32 3d 30 3a 76 79 32  |-r2..d.vx2=0:vy2|
00000080  3d 30 0d 00 6e 07 65 3d  31 0d 00 78 05 3a 0d 00  |=0..n.e=1..x.:..|
00000090  82 18 61 31 3d 28 6d 31  2d 6d 32 2a 65 29 2f 28  |..a1=(m1-m2*e)/(|
000000a0  6d 31 2b 6d 32 29 0d 00  8c 18 61 32 3d 28 6d 32  |m1+m2)....a2=(m2|
000000b0  2d 6d 31 2a 65 29 2f 28  6d 31 2b 6d 32 29 0d 00  |-m1*e)/(m1+m2)..|
000000c0  96 17 62 31 3d 6d 31 2a  28 31 2b 65 29 2f 28 6d  |..b1=m1*(1+e)/(m|
000000d0  31 2b 6d 32 29 0d 00 a0  17 62 32 3d 6d 32 2a 28  |1+m2)....b2=m2*(|
000000e0  31 2b 65 29 2f 28 6d 31  2b 6d 32 29 0d 00 aa 05  |1+e)/(m1+m2)....|
000000f0  3a 0d 00 b4 14 f2 72 65  61 64 6d 6f 6e 69 74 6f  |:.....readmonito|
00000100  72 74 79 70 65 0d 00 be  09 eb 20 6d 6f 25 0d 00  |rtype..... mo%..|
00000110  c8 05 f5 0d 00 d2 07 20  c8 96 0d 00 dc 06 20 db  |....... ...... .|
00000120  0d 00 e6 16 20 c8 8f 20  78 31 2b 72 31 2c 79 31  |.... .. x1+r1,y1|
00000130  2b 72 31 2c 72 31 0d 00  f0 16 20 c8 8f 20 78 32  |+r1,r1.... .. x2|
00000140  2b 72 32 2c 79 32 2b 72  32 2c 72 32 0d 00 fa 14  |+r2,y2+r2,r2....|
00000150  20 78 31 2b 3d 76 78 31  3a 79 31 2b 3d 76 79 31  | x1+=vx1:y1+=vy1|
00000160  0d 01 04 14 20 78 32 2b  3d 76 78 32 3a 79 32 2b  |.... x2+=vx2:y2+|
00000170  3d 76 79 32 0d 01 0e 22  20 74 78 3d 78 32 2d 78  |=vy2..." tx=x2-x|
00000180  31 2b 72 32 2d 72 31 3a  74 79 3d 79 32 2d 79 31  |1+r2-r1:ty=y2-y1|
00000190  2b 72 32 2d 72 31 0d 01  18 28 20 e7 20 94 28 74  |+r2-r1...( . .(t|
000001a0  78 29 3c 3d 28 72 31 2b  72 32 29 20 80 20 94 28  |x)<=(r1+r2) . .(|
000001b0  74 79 29 3c 3d 28 72 31  2b 72 32 29 20 8c 0d 01  |ty)<=(r1+r2) ...|
000001c0  22 19 20 20 74 78 73 3d  74 78 2a 74 78 3a 74 79  |".  txs=tx*tx:ty|
000001d0  73 3d 74 79 2a 74 79 0d  01 2c 10 20 20 64 73 3d  |s=ty*ty..,.  ds=|
000001e0  74 78 73 2b 74 79 73 0d  01 36 1d 20 20 e7 20 64  |txs+tys..6.  . d|
000001f0  73 3c 3d 28 72 31 2b 72  32 29 2a 28 72 31 2b 72  |s<=(r1+r2)*(r1+r|
00000200  32 29 20 8c 0d 01 40 16  20 20 20 78 31 2d 3d 76  |2) ...@.   x1-=v|
00000210  78 31 3a 79 31 2d 3d 76  79 31 0d 01 4a 16 20 20  |x1:y1-=vy1..J.  |
00000220  20 78 32 2d 3d 76 78 32  3a 79 32 2d 3d 76 79 32  | x2-=vx2:y2-=vy2|
00000230  0d 01 54 10 20 20 20 74  78 79 3d 74 78 2a 74 79  |..T.   txy=tx*ty|
00000240  0d 01 5e 11 20 20 20 74  78 73 3d 74 78 73 2f 64  |..^.   txs=txs/d|
00000250  73 0d 01 68 11 20 20 20  74 79 73 3d 74 79 73 2f  |s..h.   tys=tys/|
00000260  64 73 0d 01 72 11 20 20  20 74 78 79 3d 74 78 79  |ds..r.   txy=txy|
00000270  2f 64 73 0d 01 7c 17 20  20 20 64 79 3d 74 78 79  |/ds..|.   dy=txy|
00000280  2a 28 76 79 32 2d 76 79  31 29 0d 01 86 17 20 20  |*(vy2-vy1)....  |
00000290  20 64 78 3d 74 78 79 2a  28 76 78 32 2d 76 78 31  | dx=txy*(vx2-vx1|
000002a0  29 0d 01 90 2f 20 20 20  77 78 31 20 3d 20 28 61  |).../   wx1 = (a|
000002b0  31 2a 74 78 73 2b 74 79  73 29 2a 76 78 31 20 2b  |1*txs+tys)*vx1 +|
000002c0  20 62 32 2a 28 74 78 73  2a 76 78 32 2b 64 79 29  | b2*(txs*vx2+dy)|
000002d0  0d 01 9a 2f 20 20 20 77  79 31 20 3d 20 28 61 31  |.../   wy1 = (a1|
000002e0  2a 74 79 73 2b 74 78 73  29 2a 76 79 31 20 2b 20  |*tys+txs)*vy1 + |
000002f0  62 32 2a 28 74 79 73 2a  76 79 32 2b 64 78 29 0d  |b2*(tys*vy2+dx).|
00000300  01 a4 2f 20 20 20 77 78  32 20 3d 20 28 61 32 2a  |../   wx2 = (a2*|
00000310  74 78 73 2b 74 79 73 29  2a 76 78 32 20 2b 20 62  |txs+tys)*vx2 + b|
00000320  31 2a 28 74 78 73 2a 76  78 31 2d 64 79 29 0d 01  |1*(txs*vx1-dy)..|
00000330  ae 2f 20 20 20 77 79 32  20 3d 20 28 61 32 2a 74  |./   wy2 = (a2*t|
00000340  79 73 2b 74 78 73 29 2a  76 79 32 20 2b 20 62 31  |ys+txs)*vy2 + b1|
00000350  2a 28 74 79 73 2a 76 79  31 2d 64 78 29 0d 01 b8  |*(tys*vy1-dx)...|
00000360  10 20 20 20 76 78 31 20  3d 20 77 78 31 0d 01 c2  |.   vx1 = wx1...|
00000370  10 20 20 20 76 79 31 20  3d 20 77 79 31 0d 01 cc  |.   vy1 = wy1...|
00000380  10 20 20 20 76 78 32 20  3d 20 77 78 32 0d 01 d6  |.   vx2 = wx2...|
00000390  10 20 20 20 76 79 32 20  3d 20 77 79 32 0d 01 e0  |.   vy2 = wy2...|
000003a0  07 20 20 cd 0d 01 ea 06  20 cd 0d 01 f4 07 fd 20  |.  ..... ...... |
000003b0  a3 0d 01 fe 05 e0 0d 02  08 05 3a 0d 02 12 16 dd  |..........:.....|
000003c0  20 f2 72 65 61 64 6d 6f  6e 69 74 6f 72 74 79 70  | .readmonitortyp|
000003d0  65 0d 02 1c 22 c8 99 20  22 4f 53 5f 42 79 74 65  |e...".. "OS_Byte|
000003e0  22 2c 31 36 31 2c 31 33  33 20 b8 20 2c 2c 74 79  |",161,133 . ,,ty|
000003f0  70 65 25 0d 02 26 1a 74  79 70 65 25 3d 28 74 79  |pe%..&.type%=(ty|
00000400  70 65 25 20 80 20 31 32  29 20 81 20 34 0d 02 30  |pe% . 12) . 4..0|
00000410  1c e7 20 74 79 70 65 25  3d 31 20 6d 6f 25 3d 31  |.. type%=1 mo%=1|
00000420  38 20 8b 20 6d 6f 25 3d  30 0d 02 3a 05 e1 0d ff  |8 . mo%=0..:....|
00000430