Home » Archimedes archive » Acorn User » AU 1994-03.adf » !StarInfo_StarInfo » Turnbull/!Pyramid/Library/Background

Turnbull/!Pyramid/Library/Background

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 1994-03.adf » !StarInfo_StarInfo
Filename: Turnbull/!Pyramid/Library/Background
Read OK:
File size: 055E bytes
Load address: 0000
Exec address: 0000
File contents
   10DEFPROCbackground
   20LOCALerr$:err$="Background"
   30COLOUR1,128,64,64:COLOUR2,64,128,128
   40GCOL0,1:RECTANGLEFILL0,0,1279,1023
   50GCOL3,3
   60FORX%=0TO1279STEP128:RECTANGLEFILLX%,0,63,1023:NEXT
   70FORY%=0TO1023STEP128:RECTANGLEFILL0,Y%,1279,63:NEXT
   80FORA%=0TO2:A=2*PI*A%/3+PI/12:X%=640+320*COS(A):Y%=512+256*SIN(A)
   90GCOL3,3:FORT%=1TO50:CIRCLEFILLX%,Y%,5000/T%:NEXT
  100GCOL3,1:CIRCLEFILLX%,Y%,100:GCOL3,3:CIRCLEFILLX%,Y%,50:NEXT
  110IFNOTINKEY(-99)THEN
  120PROCctext("A Fractal",640,928,64):PROCctext("==========",640,864,64)
  130PROCtext("by Alistair Turnbull",100,200,1000,800)
  140PROCtext("Move the",100,900,300,500):PROCtext("Mouse",50,800,200,500)
  150PROCtext("Press A - K",600,450,1200,300):PROCtext("for Presets",650,350,1200,50)
  160PROCtext("�",1000,700,1200,600):PROCtext("&",400,300,200,200):PROCtext("%",650,50,800,0)
  170ENDIF
  180CALLstoreback
  190ENDPROC
  200:
  210DEFPROCctext(T$,X%,Y%,S%)
  220LOCALerr$:err$="Background"
  230W%=S%*LEN(T$)>>1:PROCtext(T$,X%-W%,Y%,X%+W%,Y%)
  240ENDPROC
  250:
  260DEFPROCtext(T$,X1%,Y1%,X2%,Y2%)
  270LOCALerr$:err$="Background"
  280DX=(X2%-X1%)/LEN(T$)/8:DY=(Y2%-Y1%)/LEN(T$)/8
  290GCOL0,0:PROCt(T$,X1%,Y1%-4,DX,DY):PROCt(T$,X1%+4,Y1%,DX,DY)
  300GCOL0,3:PROCt(T$,X1%,Y1%+4,DX,DY):PROCt(T$,X1%-4,Y1%,DX,DY)
  310VDU23,2,165,90,165,90,165,90,165,90:GCOL16,0:PROCt(T$,X1%,Y1%,DX,DY)
  320ENDPROC
  330:
  340DEFPROCt(T$,X,Y,DX,DY)
  350LOCALerr$:err$="Background"
  360FORT%=1TOLEN(T$):?work%=ASC(MID$(T$,T%,1)):SYS"OS_Word",10,work%
  370K%=128:FORV%=0TO7:U=X:V=Y:MOVEU,V:MOVEU+DX,V+DY
  380FORU%=8TO1STEP-1:U-=DY:V+=DX
  390IF((work%?U%)ANDK%)>0THEN
  400PLOT85,U,V:PLOT85,U+DX,V+DY
  410ELSEMOVEU,V:MOVEU+DX,V+DY
  420ENDIF:NEXT:X+=DX:Y+=DY:K%=K%>>1:NEXT,
  430ENDPROC

��background
�err$:err$="Background"
�1,128,64,64:�2,64,128,128
(�0,1:ȓȐ0,0,1279,1023
2�3,3
<%�X%=0�1279�128:ȓȐX%,0,63,1023:�
F%�Y%=0�1023�128:ȓȐ0,Y%,1279,63:�
P;�A%=0�2:A=2*�*A%/3+�/12:X%=640+320*�(A):Y%=512+256*�(A)
Z%�3,3:�T%=1�50:ȏȐX%,Y%,5000/T%:�
d*�3,1:ȏȐX%,Y%,100:�3,3:ȏȐX%,Y%,50:�
n
符(-99)�
xB�ctext("A Fractal",640,928,64):�ctext("==========",640,864,64)
�2�text("by Alistair Turnbull",100,200,1000,800)
�C�text("Move the",100,900,300,500):�text("Mouse",50,800,200,500)
�N�text("Press A - K",600,450,1200,300):�text("for Presets",650,350,1200,50)
�S�text("�",1000,700,1200,600):�text("&",400,300,200,200):�text("%",650,50,800,0)
��
��storeback
��
�:
���ctext(T$,X%,Y%,S%)
��err$:err$="Background"
�.W%=S%*�(T$)>>1:�text(T$,X%-W%,Y%,X%+W%,Y%)
��
�:
��text(T$,X1%,Y1%,X2%,Y2%)
�err$:err$="Background"
-DX=(X2%-X1%)/�(T$)/8:DY=(Y2%-Y1%)/�(T$)/8
"6�0,0:�t(T$,X1%,Y1%-4,DX,DY):�t(T$,X1%+4,Y1%,DX,DY)
,6�0,3:�t(T$,X1%,Y1%+4,DX,DY):�t(T$,X1%-4,Y1%,DX,DY)
6@�23,2,165,90,165,90,165,90,165,90:�16,0:�t(T$,X1%,Y1%,DX,DY)
@�
J:
T��t(T$,X,Y,DX,DY)
^�err$:err$="Background"
h8�T%=1��(T$):?work%=�(�T$,T%,1)):ș"OS_Word",10,work%
r*K%=128:�V%=0�7:U=X:V=Y:�U,V:�U+DX,V+DY
|�U%=8�1�-1:U-=DY:V+=DX
��((work%?U%)�K%)>0�
��85,U,V:�85,U+DX,V+DY
���U,V:�U+DX,V+DY
��:�:X+=DX:Y+=DY:K%=K%>>1:�,
��
�
00000000  0d 00 0a 10 dd f2 62 61  63 6b 67 72 6f 75 6e 64  |......background|
00000010  0d 00 14 1b ea 65 72 72  24 3a 65 72 72 24 3d 22  |.....err$:err$="|
00000020  42 61 63 6b 67 72 6f 75  6e 64 22 0d 00 1e 1e fb  |Background".....|
00000030  31 2c 31 32 38 2c 36 34  2c 36 34 3a fb 32 2c 36  |1,128,64,64:.2,6|
00000040  34 2c 31 32 38 2c 31 32  38 0d 00 28 1a e6 30 2c  |4,128,128..(..0,|
00000050  31 3a c8 93 c8 90 30 2c  30 2c 31 32 37 39 2c 31  |1:....0,0,1279,1|
00000060  30 32 33 0d 00 32 08 e6  33 2c 33 0d 00 3c 25 e3  |023..2..3,3..<%.|
00000070  58 25 3d 30 b8 31 32 37  39 88 31 32 38 3a c8 93  |X%=0.1279.128:..|
00000080  c8 90 58 25 2c 30 2c 36  33 2c 31 30 32 33 3a ed  |..X%,0,63,1023:.|
00000090  0d 00 46 25 e3 59 25 3d  30 b8 31 30 32 33 88 31  |..F%.Y%=0.1023.1|
000000a0  32 38 3a c8 93 c8 90 30  2c 59 25 2c 31 32 37 39  |28:....0,Y%,1279|
000000b0  2c 36 33 3a ed 0d 00 50  3b e3 41 25 3d 30 b8 32  |,63:...P;.A%=0.2|
000000c0  3a 41 3d 32 2a af 2a 41  25 2f 33 2b af 2f 31 32  |:A=2*.*A%/3+./12|
000000d0  3a 58 25 3d 36 34 30 2b  33 32 30 2a 9b 28 41 29  |:X%=640+320*.(A)|
000000e0  3a 59 25 3d 35 31 32 2b  32 35 36 2a b5 28 41 29  |:Y%=512+256*.(A)|
000000f0  0d 00 5a 25 e6 33 2c 33  3a e3 54 25 3d 31 b8 35  |..Z%.3,3:.T%=1.5|
00000100  30 3a c8 8f c8 90 58 25  2c 59 25 2c 35 30 30 30  |0:....X%,Y%,5000|
00000110  2f 54 25 3a ed 0d 00 64  2a e6 33 2c 31 3a c8 8f  |/T%:...d*.3,1:..|
00000120  c8 90 58 25 2c 59 25 2c  31 30 30 3a e6 33 2c 33  |..X%,Y%,100:.3,3|
00000130  3a c8 8f c8 90 58 25 2c  59 25 2c 35 30 3a ed 0d  |:....X%,Y%,50:..|
00000140  00 6e 0d e7 ac a6 28 2d  39 39 29 8c 0d 00 78 42  |.n....(-99)...xB|
00000150  f2 63 74 65 78 74 28 22  41 20 46 72 61 63 74 61  |.ctext("A Fracta|
00000160  6c 22 2c 36 34 30 2c 39  32 38 2c 36 34 29 3a f2  |l",640,928,64):.|
00000170  63 74 65 78 74 28 22 3d  3d 3d 3d 3d 3d 3d 3d 3d  |ctext("=========|
00000180  3d 22 2c 36 34 30 2c 38  36 34 2c 36 34 29 0d 00  |=",640,864,64)..|
00000190  82 32 f2 74 65 78 74 28  22 62 79 20 41 6c 69 73  |.2.text("by Alis|
000001a0  74 61 69 72 20 54 75 72  6e 62 75 6c 6c 22 2c 31  |tair Turnbull",1|
000001b0  30 30 2c 32 30 30 2c 31  30 30 30 2c 38 30 30 29  |00,200,1000,800)|
000001c0  0d 00 8c 43 f2 74 65 78  74 28 22 4d 6f 76 65 20  |...C.text("Move |
000001d0  74 68 65 22 2c 31 30 30  2c 39 30 30 2c 33 30 30  |the",100,900,300|
000001e0  2c 35 30 30 29 3a f2 74  65 78 74 28 22 4d 6f 75  |,500):.text("Mou|
000001f0  73 65 22 2c 35 30 2c 38  30 30 2c 32 30 30 2c 35  |se",50,800,200,5|
00000200  30 30 29 0d 00 96 4e f2  74 65 78 74 28 22 50 72  |00)...N.text("Pr|
00000210  65 73 73 20 41 20 2d 20  4b 22 2c 36 30 30 2c 34  |ess A - K",600,4|
00000220  35 30 2c 31 32 30 30 2c  33 30 30 29 3a f2 74 65  |50,1200,300):.te|
00000230  78 74 28 22 66 6f 72 20  50 72 65 73 65 74 73 22  |xt("for Presets"|
00000240  2c 36 35 30 2c 33 35 30  2c 31 32 30 30 2c 35 30  |,650,350,1200,50|
00000250  29 0d 00 a0 53 f2 74 65  78 74 28 22 a4 22 2c 31  |)...S.text(".",1|
00000260  30 30 30 2c 37 30 30 2c  31 32 30 30 2c 36 30 30  |000,700,1200,600|
00000270  29 3a f2 74 65 78 74 28  22 26 22 2c 34 30 30 2c  |):.text("&",400,|
00000280  33 30 30 2c 32 30 30 2c  32 30 30 29 3a f2 74 65  |300,200,200):.te|
00000290  78 74 28 22 25 22 2c 36  35 30 2c 35 30 2c 38 30  |xt("%",650,50,80|
000002a0  30 2c 30 29 0d 00 aa 05  cd 0d 00 b4 0e d6 73 74  |0,0)..........st|
000002b0  6f 72 65 62 61 63 6b 0d  00 be 05 e1 0d 00 c8 05  |oreback.........|
000002c0  3a 0d 00 d2 18 dd f2 63  74 65 78 74 28 54 24 2c  |:......ctext(T$,|
000002d0  58 25 2c 59 25 2c 53 25  29 0d 00 dc 1b ea 65 72  |X%,Y%,S%).....er|
000002e0  72 24 3a 65 72 72 24 3d  22 42 61 63 6b 67 72 6f  |r$:err$="Backgro|
000002f0  75 6e 64 22 0d 00 e6 2e  57 25 3d 53 25 2a a9 28  |und"....W%=S%*.(|
00000300  54 24 29 3e 3e 31 3a f2  74 65 78 74 28 54 24 2c  |T$)>>1:.text(T$,|
00000310  58 25 2d 57 25 2c 59 25  2c 58 25 2b 57 25 2c 59  |X%-W%,Y%,X%+W%,Y|
00000320  25 29 0d 00 f0 05 e1 0d  00 fa 05 3a 0d 01 04 1e  |%).........:....|
00000330  dd f2 74 65 78 74 28 54  24 2c 58 31 25 2c 59 31  |..text(T$,X1%,Y1|
00000340  25 2c 58 32 25 2c 59 32  25 29 0d 01 0e 1b ea 65  |%,X2%,Y2%).....e|
00000350  72 72 24 3a 65 72 72 24  3d 22 42 61 63 6b 67 72  |rr$:err$="Backgr|
00000360  6f 75 6e 64 22 0d 01 18  2d 44 58 3d 28 58 32 25  |ound"...-DX=(X2%|
00000370  2d 58 31 25 29 2f a9 28  54 24 29 2f 38 3a 44 59  |-X1%)/.(T$)/8:DY|
00000380  3d 28 59 32 25 2d 59 31  25 29 2f a9 28 54 24 29  |=(Y2%-Y1%)/.(T$)|
00000390  2f 38 0d 01 22 36 e6 30  2c 30 3a f2 74 28 54 24  |/8.."6.0,0:.t(T$|
000003a0  2c 58 31 25 2c 59 31 25  2d 34 2c 44 58 2c 44 59  |,X1%,Y1%-4,DX,DY|
000003b0  29 3a f2 74 28 54 24 2c  58 31 25 2b 34 2c 59 31  |):.t(T$,X1%+4,Y1|
000003c0  25 2c 44 58 2c 44 59 29  0d 01 2c 36 e6 30 2c 33  |%,DX,DY)..,6.0,3|
000003d0  3a f2 74 28 54 24 2c 58  31 25 2c 59 31 25 2b 34  |:.t(T$,X1%,Y1%+4|
000003e0  2c 44 58 2c 44 59 29 3a  f2 74 28 54 24 2c 58 31  |,DX,DY):.t(T$,X1|
000003f0  25 2d 34 2c 59 31 25 2c  44 58 2c 44 59 29 0d 01  |%-4,Y1%,DX,DY)..|
00000400  36 40 ef 32 33 2c 32 2c  31 36 35 2c 39 30 2c 31  |6@.23,2,165,90,1|
00000410  36 35 2c 39 30 2c 31 36  35 2c 39 30 2c 31 36 35  |65,90,165,90,165|
00000420  2c 39 30 3a e6 31 36 2c  30 3a f2 74 28 54 24 2c  |,90:.16,0:.t(T$,|
00000430  58 31 25 2c 59 31 25 2c  44 58 2c 44 59 29 0d 01  |X1%,Y1%,DX,DY)..|
00000440  40 05 e1 0d 01 4a 05 3a  0d 01 54 15 dd f2 74 28  |@....J.:..T...t(|
00000450  54 24 2c 58 2c 59 2c 44  58 2c 44 59 29 0d 01 5e  |T$,X,Y,DX,DY)..^|
00000460  1b ea 65 72 72 24 3a 65  72 72 24 3d 22 42 61 63  |..err$:err$="Bac|
00000470  6b 67 72 6f 75 6e 64 22  0d 01 68 38 e3 54 25 3d  |kground"..h8.T%=|
00000480  31 b8 a9 28 54 24 29 3a  3f 77 6f 72 6b 25 3d 97  |1..(T$):?work%=.|
00000490  28 c1 54 24 2c 54 25 2c  31 29 29 3a c8 99 22 4f  |(.T$,T%,1)):.."O|
000004a0  53 5f 57 6f 72 64 22 2c  31 30 2c 77 6f 72 6b 25  |S_Word",10,work%|
000004b0  0d 01 72 2a 4b 25 3d 31  32 38 3a e3 56 25 3d 30  |..r*K%=128:.V%=0|
000004c0  b8 37 3a 55 3d 58 3a 56  3d 59 3a ec 55 2c 56 3a  |.7:U=X:V=Y:.U,V:|
000004d0  ec 55 2b 44 58 2c 56 2b  44 59 0d 01 7c 1a e3 55  |.U+DX,V+DY..|..U|
000004e0  25 3d 38 b8 31 88 2d 31  3a 55 2d 3d 44 59 3a 56  |%=8.1.-1:U-=DY:V|
000004f0  2b 3d 44 58 0d 01 86 17  e7 28 28 77 6f 72 6b 25  |+=DX.....((work%|
00000500  3f 55 25 29 80 4b 25 29  3e 30 8c 0d 01 90 19 f0  |?U%).K%)>0......|
00000510  38 35 2c 55 2c 56 3a f0  38 35 2c 55 2b 44 58 2c  |85,U,V:.85,U+DX,|
00000520  56 2b 44 59 0d 01 9a 14  cc ec 55 2c 56 3a ec 55  |V+DY......U,V:.U|
00000530  2b 44 58 2c 56 2b 44 59  0d 01 a4 1f cd 3a ed 3a  |+DX,V+DY.....:.:|
00000540  58 2b 3d 44 58 3a 59 2b  3d 44 59 3a 4b 25 3d 4b  |X+=DX:Y+=DY:K%=K|
00000550  25 3e 3e 31 3a ed 2c 0d  01 ae 05 e1 0d ff        |%>>1:.,.......|
0000055e