StarInfo/circles/Jeffs/Jellyfish2

Home » Archimedes archive » Acorn User » AU 1997-02 B.adf » Regulars » StarInfo/circles/Jeffs/Jellyfish2

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 1997-02 B.adf » Regulars
Filename:	StarInfo/circles/Jeffs/Jellyfish2
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File size:	03D7 bytes
Load address:	0000
Exec address:	0000

File contents

   10REM  Acorn User circle challenge
   20REM  Jellyfish - by R W Jeffs
   30:
   40MODE 27:OFF
   50cx%=640:cy%=480:F%=1024
   60REPEAT:CLS
   70 FOR C%=1 TO 7:GCOL0,C%:CIRCLEFILL cx%,cy%,200*COS(RAD(80*C%/15)):NEXT
   80 FOR C%=8 TO 15:GCOL0,16-C%:CIRCLEFILL cx%,cy%,200*COS(RAD(80*C%/15)):NEXT
   90 FOR A%=0 TO 359 STEP 60
  100  PROCtentacle(SIN(RAD(A%))*40,COS(RAD(A%))*40,RND(3),RND(3),RND(3)*10,RND(3)*10)
  110 NEXT
  120PROCwriggle
  130UNTIL FALSE
  140END
  150:
  160REM  Tentacle creation - it was trial and error to get the tentacles to thin out.
  170:
  180DEF PROCtentacle(X%,Y%,W1%,W2%,A1%,A2%)
  190LOCAL T%,Z%,thin,R%,x%,y%,coloff%
  200coloff%=RND(8)
  210FOR T%=1 TO 800
  220 Z%=900-T%
  230 col%=(T% DIV 3) MOD 15+1
  240 col%+=coloff%:IF col%>15 col%-=15
  250 GCOL0,col%
  260 thin=COS(RAD(7+80*T%/800))
  270 R%=15*thin/Z%*F%
  280 x%=X%+SIN(RAD(T%*W1%))*A1%
  290 y%=Y%+COS(RAD(T%*W2%))*A2%
  300 x%=x%/Z%*F%+cx%:y%=y%/Z%*F%+cy%
  310 CIRCLEFILL x%,y%,R%
  320NEXT
  330ENDPROC
  340:
  350DEF PROCwriggle
  360LOCAL A%
  370C%=1
  380REPEAT:WAIT
  390 FOR A%=1 TO 15
  400  COLOUR A%,0,(SIN(RAD(A%*360/15+C%))+1)/2*127+64,(SIN(RAD(A%*360/15+C%))+1)/2*127+64
  410 NEXT
  420 C%+=5:IF C%>=360 C%-=360
  430UNTILINKEY(-99)
  440ENDPROC


"�  Acorn User circle challenge
�  Jellyfish - by R W Jeffs
:
(
� 27:�
2cx%=640:cy%=480:F%=1024
<�:�
F7 � C%=1 � 7:�0,C%:ȏȐ cx%,cy%,200*�(�(80*C%/15)):�
P; � C%=8 � 15:�0,16-C%:ȏȐ cx%,cy%,200*�(�(80*C%/15)):�
Z � A%=0 � 359 � 60
dB  �tentacle(�(�(A%))*40,�(�(A%))*40,�(3),�(3),�(3)*10,�(3)*10)
n �
x�wriggle
�� �
��
�:
�S�  Tentacle creation - it was trial and error to get the tentacles to thin out.
�:
�&� �tentacle(X%,Y%,W1%,W2%,A1%,A2%)
�!� T%,Z%,thin,R%,x%,y%,coloff%
�coloff%=�(8)
�� T%=1 � 800
� Z%=900-T%
� col%=(T% � 3) � 15+1
�% col%+=coloff%:� col%>15 col%-=15
� �0,col%
 thin=�(�(7+80*T%/800))
 R%=15*thin/Z%*F%
 x%=X%+�(�(T%*W1%))*A1%
" y%=Y%+�(�(T%*W2%))*A2%
,$ x%=x%/Z%*F%+cx%:y%=y%/Z%*F%+cy%
6 ȏȐ x%,y%,R%
@�
J�
T:
^� �wriggle
h� A%
rC%=1
|�:Ȗ
� � A%=1 � 15
�L  � A%,0,(�(�(A%*360/15+C%))+1)/2*127+64,(�(�(A%*360/15+C%))+1)/2*127+64
� �
� C%+=5:� C%>=360 C%-=360
���(-99)
��
�

00000000  0d 00 0a 22 f4 20 20 41  63 6f 72 6e 20 55 73 65  |...".  Acorn Use|
00000010  72 20 63 69 72 63 6c 65  20 63 68 61 6c 6c 65 6e  |r circle challen|
00000020  67 65 0d 00 14 1f f4 20  20 4a 65 6c 6c 79 66 69  |ge.....  Jellyfi|
00000030  73 68 20 2d 20 62 79 20  52 20 57 20 4a 65 66 66  |sh - by R W Jeff|
00000040  73 0d 00 1e 05 3a 0d 00  28 0a eb 20 32 37 3a 87  |s....:..(.. 27:.|
00000050  0d 00 32 1b 63 78 25 3d  36 34 30 3a 63 79 25 3d  |..2.cx%=640:cy%=|
00000060  34 38 30 3a 46 25 3d 31  30 32 34 0d 00 3c 07 f5  |480:F%=1024..<..|
00000070  3a db 0d 00 46 37 20 e3  20 43 25 3d 31 20 b8 20  |:...F7 . C%=1 . |
00000080  37 3a e6 30 2c 43 25 3a  c8 8f c8 90 20 63 78 25  |7:.0,C%:.... cx%|
00000090  2c 63 79 25 2c 32 30 30  2a 9b 28 b2 28 38 30 2a  |,cy%,200*.(.(80*|
000000a0  43 25 2f 31 35 29 29 3a  ed 0d 00 50 3b 20 e3 20  |C%/15)):...P; . |
000000b0  43 25 3d 38 20 b8 20 31  35 3a e6 30 2c 31 36 2d  |C%=8 . 15:.0,16-|
000000c0  43 25 3a c8 8f c8 90 20  63 78 25 2c 63 79 25 2c  |C%:.... cx%,cy%,|
000000d0  32 30 30 2a 9b 28 b2 28  38 30 2a 43 25 2f 31 35  |200*.(.(80*C%/15|
000000e0  29 29 3a ed 0d 00 5a 16  20 e3 20 41 25 3d 30 20  |)):...Z. . A%=0 |
000000f0  b8 20 33 35 39 20 88 20  36 30 0d 00 64 42 20 20  |. 359 . 60..dB  |
00000100  f2 74 65 6e 74 61 63 6c  65 28 b5 28 b2 28 41 25  |.tentacle(.(.(A%|
00000110  29 29 2a 34 30 2c 9b 28  b2 28 41 25 29 29 2a 34  |))*40,.(.(A%))*4|
00000120  30 2c b3 28 33 29 2c b3  28 33 29 2c b3 28 33 29  |0,.(3),.(3),.(3)|
00000130  2a 31 30 2c b3 28 33 29  2a 31 30 29 0d 00 6e 06  |*10,.(3)*10)..n.|
00000140  20 ed 0d 00 78 0c f2 77  72 69 67 67 6c 65 0d 00  | ...x..wriggle..|
00000150  82 07 fd 20 a3 0d 00 8c  05 e0 0d 00 96 05 3a 0d  |... ..........:.|
00000160  00 a0 53 f4 20 20 54 65  6e 74 61 63 6c 65 20 63  |..S.  Tentacle c|
00000170  72 65 61 74 69 6f 6e 20  2d 20 69 74 20 77 61 73  |reation - it was|
00000180  20 74 72 69 61 6c 20 61  6e 64 20 65 72 72 6f 72  | trial and error|
00000190  20 74 6f 20 67 65 74 20  74 68 65 20 74 65 6e 74  | to get the tent|
000001a0  61 63 6c 65 73 20 74 6f  20 74 68 69 6e 20 6f 75  |acles to thin ou|
000001b0  74 2e 0d 00 aa 05 3a 0d  00 b4 26 dd 20 f2 74 65  |t.....:...&. .te|
000001c0  6e 74 61 63 6c 65 28 58  25 2c 59 25 2c 57 31 25  |ntacle(X%,Y%,W1%|
000001d0  2c 57 32 25 2c 41 31 25  2c 41 32 25 29 0d 00 be  |,W2%,A1%,A2%)...|
000001e0  21 ea 20 54 25 2c 5a 25  2c 74 68 69 6e 2c 52 25  |!. T%,Z%,thin,R%|
000001f0  2c 78 25 2c 79 25 2c 63  6f 6c 6f 66 66 25 0d 00  |,x%,y%,coloff%..|
00000200  c8 10 63 6f 6c 6f 66 66  25 3d b3 28 38 29 0d 00  |..coloff%=.(8)..|
00000210  d2 10 e3 20 54 25 3d 31  20 b8 20 38 30 30 0d 00  |... T%=1 . 800..|
00000220  dc 0e 20 5a 25 3d 39 30  30 2d 54 25 0d 00 e6 19  |.. Z%=900-T%....|
00000230  20 63 6f 6c 25 3d 28 54  25 20 81 20 33 29 20 83  | col%=(T% . 3) .|
00000240  20 31 35 2b 31 0d 00 f0  25 20 63 6f 6c 25 2b 3d  | 15+1...% col%+=|
00000250  63 6f 6c 6f 66 66 25 3a  e7 20 63 6f 6c 25 3e 31  |coloff%:. col%>1|
00000260  35 20 63 6f 6c 25 2d 3d  31 35 0d 00 fa 0c 20 e6  |5 col%-=15.... .|
00000270  30 2c 63 6f 6c 25 0d 01  04 1b 20 74 68 69 6e 3d  |0,col%.... thin=|
00000280  9b 28 b2 28 37 2b 38 30  2a 54 25 2f 38 30 30 29  |.(.(7+80*T%/800)|
00000290  29 0d 01 0e 15 20 52 25  3d 31 35 2a 74 68 69 6e  |).... R%=15*thin|
000002a0  2f 5a 25 2a 46 25 0d 01  18 1b 20 78 25 3d 58 25  |/Z%*F%.... x%=X%|
000002b0  2b b5 28 b2 28 54 25 2a  57 31 25 29 29 2a 41 31  |+.(.(T%*W1%))*A1|
000002c0  25 0d 01 22 1b 20 79 25  3d 59 25 2b 9b 28 b2 28  |%..". y%=Y%+.(.(|
000002d0  54 25 2a 57 32 25 29 29  2a 41 32 25 0d 01 2c 24  |T%*W2%))*A2%..,$|
000002e0  20 78 25 3d 78 25 2f 5a  25 2a 46 25 2b 63 78 25  | x%=x%/Z%*F%+cx%|
000002f0  3a 79 25 3d 79 25 2f 5a  25 2a 46 25 2b 63 79 25  |:y%=y%/Z%*F%+cy%|
00000300  0d 01 36 12 20 c8 8f c8  90 20 78 25 2c 79 25 2c  |..6. .... x%,y%,|
00000310  52 25 0d 01 40 05 ed 0d  01 4a 05 e1 0d 01 54 05  |R%..@....J....T.|
00000320  3a 0d 01 5e 0e dd 20 f2  77 72 69 67 67 6c 65 0d  |:..^.. .wriggle.|
00000330  01 68 08 ea 20 41 25 0d  01 72 08 43 25 3d 31 0d  |.h.. A%..r.C%=1.|
00000340  01 7c 08 f5 3a c8 96 0d  01 86 10 20 e3 20 41 25  |.|..:...... . A%|
00000350  3d 31 20 b8 20 31 35 0d  01 90 4c 20 20 fb 20 41  |=1 . 15...L  . A|
00000360  25 2c 30 2c 28 b5 28 b2  28 41 25 2a 33 36 30 2f  |%,0,(.(.(A%*360/|
00000370  31 35 2b 43 25 29 29 2b  31 29 2f 32 2a 31 32 37  |15+C%))+1)/2*127|
00000380  2b 36 34 2c 28 b5 28 b2  28 41 25 2a 33 36 30 2f  |+64,(.(.(A%*360/|
00000390  31 35 2b 43 25 29 29 2b  31 29 2f 32 2a 31 32 37  |15+C%))+1)/2*127|
000003a0  2b 36 34 0d 01 9a 06 20  ed 0d 01 a4 1c 20 43 25  |+64.... ..... C%|
000003b0  2b 3d 35 3a e7 20 43 25  3e 3d 33 36 30 20 43 25  |+=5:. C%>=360 C%|
000003c0  2d 3d 33 36 30 0d 01 ae  0b fd a6 28 2d 39 39 29  |-=360......(-99)|
000003d0  0d 01 b8 05 e1 0d ff                              |.......|
000003d7

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