Home » Archimedes archive » Acorn User » AU 1997-03 B.adf » Regulars » StarInfo/Wood/SnowFall

StarInfo/Wood/SnowFall

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 1997-03 B.adf » Regulars
Filename: StarInfo/Wood/SnowFall
Read OK:
File size: 08A7 bytes
Load address: 0000
Exec address: 0000
File contents
   10REM !SnowFall, by KTW
   20REM Move the mouse while holding down the left mouse button to start snowing!
   30
   40ONERROR:SYS"OS_SpriteOp",256+60:MODEMODE:REPORT:PRINT" at line "ERL/10:END
   50MODE128+4:*POINTER
   60PRINT"Wait. . ."
   70SYS"OS_RemoveCursors"
   80SYS"OS_SWINumberFromString",,"OS_SpriteOp"TOSpOp%
   90SYS"OS_SWINumberFromString",,"OS_Byte"TOByte%
  100size%=80800:num%=10:shx%=2:shy%=2:ix%=2<<shx%:iy%=2<<shy%:bank%=1:cnt%=0
  110DIMx%(num%),y%(num%),z%(num%),a%(32),o%(num%),area%size%,scale%15,m%31
  120!area%=size%:area%!8=16:SYSSpOp%,256+9,area%
  130FORJ%=2TO63STEP2:SYSSpOp%,256+15,area%,STR$J%,0,J%<<1,J%<<1,MODE:NEXT
  140scale%!8=64<<1:scale%!12=64<<1
  150ox%=(64-1)<<shx%:oy%=(64-1)<<shy%
  160sx%=((64<<1)-1)<<shx%:sy%=((64<<1)-1)<<shy%
  170MOVE2*ox%,2*oy%
  180FORJ%=1TO64<<shy%STEP4:DRAW2*ox%+(RND(100)*(64-(J%>>shy%))DIV64),2*oy%+J%:NEXT
  190SYSSpOp%,256+16,area%,"64",0,ox%,oy%,ox%+sx%,oy%+sy%
  200SYSSpOp%,256+47,area%,"64"
  210SYSSpOp%,256+34,area%,"64",ox%,oy%,1
  220SYSSpOp%,256+16,area%,"64",0,ox%,oy%,ox%+sx%,oy%+sy%
  230SYSSpOp%,256+33,area%,"64"
  240SYSSpOp%,256+34,area%,"64",ox%,oy%,1
  250SYSSpOp%,256+16,area%,"64",0,ox%,oy%,ox%+sx%,oy%+sy%
  260PROCplot_rotated(RAD60)
  270PROCplot_rotated(RAD120)
  280SYSSpOp%,256+16,area%,"64",0,ox%,oy%,ox%+sx%,oy%+sy%
  290FORJ%=2TO63STEP2
  300!scale%=J%<<1:scale%!4=J%<<1
  310SYS"OS_SpriteOp",256+60,area%,STR$J%,0
  320SYS"OS_SpriteOp",256+52,area%,"64",0,0,0,scale%
  330SYS"OS_SpriteOp",256+60
  340NEXT
  350FORJ%=1TO32:SYSSpOp%,256+24,area%,STR$(J%<<1)TO,,a%(J%):NEXT
  360SYSByte%,112,bank%TO,bank%:CLS:SYSByte%,112,bank%TO,bank%:CLS
  370FORJ%=0TOnum%:x%(J%)=RND(800):y%(J%)=RND(800):z%(J%)=RND(32):o%(J%)=0:NEXT
  380MOUSExn%,yn%,b%
  390REPEAT:MOUSEx%,y%,b%:IF b% AND 1 PROCx(RND(1280),RND(1024))
  400IF (b% AND 4) AND TIME>4 PROCx(x%-ox%,y%-oy%):TIME=0
  410WAIT:SYSByte%,113,bank%TO,bank%:SYSByte%,112,bank%:CLS:FORJ%=0TOnum%:IFo%(J%)THENSYSSpOp%,546,area%,a%(z%(J%)),x%(J%),y%(J%),1:x%(J%)+=ix%:y%(J%)+=iy%:z%(J%)-=1:IFz%(J%)<=0THENo%(J%)=0
  420NEXT:UNTIL0
  430END
  440DEF PROCx(x,y)
  450z%(cnt%)=32:x%(cnt%)=x:y%(cnt%)=y:o%(cnt%)=1:cnt%+=1:IFcnt%>num%THENcnt%=0
  451ENDPROC
  460
  470DEFPROCplot_rotated(a)
  480s=SINa:c=COSa:x0=-ox%:x1=ox%:y0=-oy%:y1=oy%
  490!m%=(x0*c-y0*s+sx%)*256:m%!4=(x0*s+y0*c+sy%)*256
  500m%!8=(x1*c-y0*s+sx%)*256:m%!12=(x1*s+y0*c+sy%)*256
  510m%!16=(x1*c-y1*s+sx%)*256:m%!20=(x1*s+y1*c+sy%)*256
  520m%!24=(x0*c-y1*s+sx%)*256:m%!28=(x0*s+y1*c+sy%)*256
  530SYSSpOp%,256+56,area%,"64",1,,1,m%
  540ENDPROC

� !SnowFall, by KTW
O� Move the mouse while holding down the left mouse button to start snowing!

(5�:ș"OS_SpriteOp",256+60:��:�:�" at line "�/10:�
2�128+4:*POINTER
<�"Wait. . ."
Fș"OS_RemoveCursors"
P3ș"OS_SWINumberFromString",,"OS_SpriteOp"�SpOp%
Z/ș"OS_SWINumberFromString",,"OS_Byte"�Byte%
dLsize%=80800:num%=10:shx%=2:shy%=2:ix%=2<<shx%:iy%=2<<shy%:bank%=1:cnt%=0
nH�x%(num%),y%(num%),z%(num%),a%(32),o%(num%),area%size%,scale%15,m%31
x/!area%=size%:area%!8=16:șSpOp%,256+9,area%
�9�J%=2�63�2:șSpOp%,256+15,area%,�J%,0,J%<<1,J%<<1,�:�
�"scale%!8=64<<1:scale%!12=64<<1
�%ox%=(64-1)<<shx%:oy%=(64-1)<<shy%
�/sx%=((64<<1)-1)<<shx%:sy%=((64<<1)-1)<<shy%
��2*ox%,2*oy%
�B�J%=1�64<<shy%�4:�2*ox%+(�(100)*(64-(J%>>shy%))�64),2*oy%+J%:�
�7șSpOp%,256+16,area%,"64",0,ox%,oy%,ox%+sx%,oy%+sy%
�șSpOp%,256+47,area%,"64"
�'șSpOp%,256+34,area%,"64",ox%,oy%,1
�7șSpOp%,256+16,area%,"64",0,ox%,oy%,ox%+sx%,oy%+sy%
�șSpOp%,256+33,area%,"64"
�'șSpOp%,256+34,area%,"64",ox%,oy%,1
�7șSpOp%,256+16,area%,"64",0,ox%,oy%,ox%+sx%,oy%+sy%
�plot_rotated(�60)
�plot_rotated(�120)
7șSpOp%,256+16,area%,"64",0,ox%,oy%,ox%+sx%,oy%+sy%
"�J%=2�63�2
, !scale%=J%<<1:scale%!4=J%<<1
6&ș"OS_SpriteOp",256+60,area%,�J%,0
@2ș"OS_SpriteOp",256+52,area%,"64",0,0,0,scale%
Jș"OS_SpriteOp",256+60
T�
^5�J%=1�32:șSpOp%,256+24,area%,�(J%<<1)�,,a%(J%):�
h9șByte%,112,bank%�,bank%:�:șByte%,112,bank%�,bank%:�
rB�J%=0�num%:x%(J%)=�(800):y%(J%)=�(800):z%(J%)=�(32):o%(J%)=0:�
|ȗxn%,yn%,b%
�-�:ȗx%,y%,b%:� b% � 1 �x(�(1280),�(1024))
�*� (b% � 4) � �>4 �x(x%-ox%,y%-oy%):�=0
��Ȗ:șByte%,113,bank%�,bank%:șByte%,112,bank%:�:�J%=0�num%:�o%(J%)�șSpOp%,546,area%,a%(z%(J%)),x%(J%),y%(J%),1:x%(J%)+=ix%:y%(J%)+=iy%:z%(J%)-=1:�z%(J%)<=0�o%(J%)=0
��:�0
��
�
� �x(x,y)
�Jz%(cnt%)=32:x%(cnt%)=x:y%(cnt%)=y:o%(cnt%)=1:cnt%+=1:�cnt%>num%�cnt%=0
��
�
���plot_rotated(a)
�+s=�a:c=�a:x0=-ox%:x1=ox%:y0=-oy%:y1=oy%
�4!m%=(x0*c-y0*s+sx%)*256:m%!4=(x0*s+y0*c+sy%)*256
�6m%!8=(x1*c-y0*s+sx%)*256:m%!12=(x1*s+y0*c+sy%)*256
�7m%!16=(x1*c-y1*s+sx%)*256:m%!20=(x1*s+y1*c+sy%)*256
7m%!24=(x0*c-y1*s+sx%)*256:m%!28=(x0*s+y1*c+sy%)*256
%șSpOp%,256+56,area%,"64",1,,1,m%
�
�
00000000  0d 00 0a 17 f4 20 21 53  6e 6f 77 46 61 6c 6c 2c  |..... !SnowFall,|
00000010  20 62 79 20 4b 54 57 0d  00 14 4f f4 20 4d 6f 76  | by KTW...O. Mov|
00000020  65 20 74 68 65 20 6d 6f  75 73 65 20 77 68 69 6c  |e the mouse whil|
00000030  65 20 68 6f 6c 64 69 6e  67 20 64 6f 77 6e 20 74  |e holding down t|
00000040  68 65 20 6c 65 66 74 20  6d 6f 75 73 65 20 62 75  |he left mouse bu|
00000050  74 74 6f 6e 20 74 6f 20  73 74 61 72 74 20 73 6e  |tton to start sn|
00000060  6f 77 69 6e 67 21 0d 00  1e 04 0d 00 28 35 ee 85  |owing!......(5..|
00000070  3a c8 99 22 4f 53 5f 53  70 72 69 74 65 4f 70 22  |:.."OS_SpriteOp"|
00000080  2c 32 35 36 2b 36 30 3a  eb eb 3a f6 3a f1 22 20  |,256+60:..:.:." |
00000090  61 74 20 6c 69 6e 65 20  22 9e 2f 31 30 3a e0 0d  |at line "./10:..|
000000a0  00 32 13 eb 31 32 38 2b  34 3a 2a 50 4f 49 4e 54  |.2..128+4:*POINT|
000000b0  45 52 0d 00 3c 10 f1 22  57 61 69 74 2e 20 2e 20  |ER..<.."Wait. . |
000000c0  2e 22 0d 00 46 18 c8 99  22 4f 53 5f 52 65 6d 6f  |."..F..."OS_Remo|
000000d0  76 65 43 75 72 73 6f 72  73 22 0d 00 50 33 c8 99  |veCursors"..P3..|
000000e0  22 4f 53 5f 53 57 49 4e  75 6d 62 65 72 46 72 6f  |"OS_SWINumberFro|
000000f0  6d 53 74 72 69 6e 67 22  2c 2c 22 4f 53 5f 53 70  |mString",,"OS_Sp|
00000100  72 69 74 65 4f 70 22 b8  53 70 4f 70 25 0d 00 5a  |riteOp".SpOp%..Z|
00000110  2f c8 99 22 4f 53 5f 53  57 49 4e 75 6d 62 65 72  |/.."OS_SWINumber|
00000120  46 72 6f 6d 53 74 72 69  6e 67 22 2c 2c 22 4f 53  |FromString",,"OS|
00000130  5f 42 79 74 65 22 b8 42  79 74 65 25 0d 00 64 4c  |_Byte".Byte%..dL|
00000140  73 69 7a 65 25 3d 38 30  38 30 30 3a 6e 75 6d 25  |size%=80800:num%|
00000150  3d 31 30 3a 73 68 78 25  3d 32 3a 73 68 79 25 3d  |=10:shx%=2:shy%=|
00000160  32 3a 69 78 25 3d 32 3c  3c 73 68 78 25 3a 69 79  |2:ix%=2<<shx%:iy|
00000170  25 3d 32 3c 3c 73 68 79  25 3a 62 61 6e 6b 25 3d  |%=2<<shy%:bank%=|
00000180  31 3a 63 6e 74 25 3d 30  0d 00 6e 48 de 78 25 28  |1:cnt%=0..nH.x%(|
00000190  6e 75 6d 25 29 2c 79 25  28 6e 75 6d 25 29 2c 7a  |num%),y%(num%),z|
000001a0  25 28 6e 75 6d 25 29 2c  61 25 28 33 32 29 2c 6f  |%(num%),a%(32),o|
000001b0  25 28 6e 75 6d 25 29 2c  61 72 65 61 25 73 69 7a  |%(num%),area%siz|
000001c0  65 25 2c 73 63 61 6c 65  25 31 35 2c 6d 25 33 31  |e%,scale%15,m%31|
000001d0  0d 00 78 2f 21 61 72 65  61 25 3d 73 69 7a 65 25  |..x/!area%=size%|
000001e0  3a 61 72 65 61 25 21 38  3d 31 36 3a c8 99 53 70  |:area%!8=16:..Sp|
000001f0  4f 70 25 2c 32 35 36 2b  39 2c 61 72 65 61 25 0d  |Op%,256+9,area%.|
00000200  00 82 39 e3 4a 25 3d 32  b8 36 33 88 32 3a c8 99  |..9.J%=2.63.2:..|
00000210  53 70 4f 70 25 2c 32 35  36 2b 31 35 2c 61 72 65  |SpOp%,256+15,are|
00000220  61 25 2c c3 4a 25 2c 30  2c 4a 25 3c 3c 31 2c 4a  |a%,.J%,0,J%<<1,J|
00000230  25 3c 3c 31 2c eb 3a ed  0d 00 8c 22 73 63 61 6c  |%<<1,.:...."scal|
00000240  65 25 21 38 3d 36 34 3c  3c 31 3a 73 63 61 6c 65  |e%!8=64<<1:scale|
00000250  25 21 31 32 3d 36 34 3c  3c 31 0d 00 96 25 6f 78  |%!12=64<<1...%ox|
00000260  25 3d 28 36 34 2d 31 29  3c 3c 73 68 78 25 3a 6f  |%=(64-1)<<shx%:o|
00000270  79 25 3d 28 36 34 2d 31  29 3c 3c 73 68 79 25 0d  |y%=(64-1)<<shy%.|
00000280  00 a0 2f 73 78 25 3d 28  28 36 34 3c 3c 31 29 2d  |../sx%=((64<<1)-|
00000290  31 29 3c 3c 73 68 78 25  3a 73 79 25 3d 28 28 36  |1)<<shx%:sy%=((6|
000002a0  34 3c 3c 31 29 2d 31 29  3c 3c 73 68 79 25 0d 00  |4<<1)-1)<<shy%..|
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000002c0  b4 42 e3 4a 25 3d 31 b8  36 34 3c 3c 73 68 79 25  |.B.J%=1.64<<shy%|
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00000360  32 35 36 2b 33 34 2c 61  72 65 61 25 2c 22 36 34  |256+34,area%,"64|
00000370  22 2c 6f 78 25 2c 6f 79  25 2c 31 0d 00 dc 37 c8  |",ox%,oy%,1...7.|
00000380  99 53 70 4f 70 25 2c 32  35 36 2b 31 36 2c 61 72  |.SpOp%,256+16,ar|
00000390  65 61 25 2c 22 36 34 22  2c 30 2c 6f 78 25 2c 6f  |ea%,"64",0,ox%,o|
000003a0  79 25 2c 6f 78 25 2b 73  78 25 2c 6f 79 25 2b 73  |y%,ox%+sx%,oy%+s|
000003b0  79 25 0d 00 e6 1d c8 99  53 70 4f 70 25 2c 32 35  |y%......SpOp%,25|
000003c0  36 2b 33 33 2c 61 72 65  61 25 2c 22 36 34 22 0d  |6+33,area%,"64".|
000003d0  00 f0 27 c8 99 53 70 4f  70 25 2c 32 35 36 2b 33  |..'..SpOp%,256+3|
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000003f0  2c 6f 79 25 2c 31 0d 00  fa 37 c8 99 53 70 4f 70  |,oy%,1...7..SpOp|
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00000420  25 2b 73 78 25 2c 6f 79  25 2b 73 79 25 0d 01 04  |%+sx%,oy%+sy%...|
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00000440  36 30 29 0d 01 0e 17 f2  70 6c 6f 74 5f 72 6f 74  |60).....plot_rot|
00000450  61 74 65 64 28 b2 31 32  30 29 0d 01 18 37 c8 99  |ated(.120)...7..|
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000004a0  01 2c 20 21 73 63 61 6c  65 25 3d 4a 25 3c 3c 31  |., !scale%=J%<<1|
000004b0  3a 73 63 61 6c 65 25 21  34 3d 4a 25 3c 3c 31 0d  |:scale%!4=J%<<1.|
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00000590  25 2c 31 31 32 2c 62 61  6e 6b 25 b8 2c 62 61 6e  |%,112,bank%.,ban|
000005a0  6b 25 3a db 0d 01 72 42  e3 4a 25 3d 30 b8 6e 75  |k%:...rB.J%=0.nu|
000005b0  6d 25 3a 78 25 28 4a 25  29 3d b3 28 38 30 30 29  |m%:x%(J%)=.(800)|
000005c0  3a 79 25 28 4a 25 29 3d  b3 28 38 30 30 29 3a 7a  |:y%(J%)=.(800):z|
000005d0  25 28 4a 25 29 3d b3 28  33 32 29 3a 6f 25 28 4a  |%(J%)=.(32):o%(J|
000005e0  25 29 3d 30 3a ed 0d 01  7c 10 c8 97 78 6e 25 2c  |%)=0:...|...xn%,|
000005f0  79 6e 25 2c 62 25 0d 01  86 2d f5 3a c8 97 78 25  |yn%,b%...-.:..x%|
00000600  2c 79 25 2c 62 25 3a e7  20 62 25 20 80 20 31 20  |,y%,b%:. b% . 1 |
00000610  f2 78 28 b3 28 31 32 38  30 29 2c b3 28 31 30 32  |.x(.(1280),.(102|
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00000660  62 61 6e 6b 25 b8 2c 62  61 6e 6b 25 3a c8 99 42  |bank%.,bank%:..B|
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00000680  3a e3 4a 25 3d 30 b8 6e  75 6d 25 3a e7 6f 25 28  |:.J%=0.num%:.o%(|
00000690  4a 25 29 8c c8 99 53 70  4f 70 25 2c 35 34 36 2c  |J%)...SpOp%,546,|
000006a0  61 72 65 61 25 2c 61 25  28 7a 25 28 4a 25 29 29  |area%,a%(z%(J%))|
000006b0  2c 78 25 28 4a 25 29 2c  79 25 28 4a 25 29 2c 31  |,x%(J%),y%(J%),1|
000006c0  3a 78 25 28 4a 25 29 2b  3d 69 78 25 3a 79 25 28  |:x%(J%)+=ix%:y%(|
000006d0  4a 25 29 2b 3d 69 79 25  3a 7a 25 28 4a 25 29 2d  |J%)+=iy%:z%(J%)-|
000006e0  3d 31 3a e7 7a 25 28 4a  25 29 3c 3d 30 8c 6f 25  |=1:.z%(J%)<=0.o%|
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00000700  ae 05 e0 0d 01 b8 0d dd  20 f2 78 28 78 2c 79 29  |........ .x(x,y)|
00000710  0d 01 c2 4a 7a 25 28 63  6e 74 25 29 3d 33 32 3a  |...Jz%(cnt%)=32:|
00000720  78 25 28 63 6e 74 25 29  3d 78 3a 79 25 28 63 6e  |x%(cnt%)=x:y%(cn|
00000730  74 25 29 3d 79 3a 6f 25  28 63 6e 74 25 29 3d 31  |t%)=y:o%(cnt%)=1|
00000740  3a 63 6e 74 25 2b 3d 31  3a e7 63 6e 74 25 3e 6e  |:cnt%+=1:.cnt%>n|
00000750  75 6d 25 8c 63 6e 74 25  3d 30 0d 01 c3 05 e1 0d  |um%.cnt%=0......|
00000760  01 cc 04 0d 01 d6 15 dd  f2 70 6c 6f 74 5f 72 6f  |.........plot_ro|
00000770  74 61 74 65 64 28 61 29  0d 01 e0 2b 73 3d b5 61  |tated(a)...+s=.a|
00000780  3a 63 3d 9b 61 3a 78 30  3d 2d 6f 78 25 3a 78 31  |:c=.a:x0=-ox%:x1|
00000790  3d 6f 78 25 3a 79 30 3d  2d 6f 79 25 3a 79 31 3d  |=ox%:y0=-oy%:y1=|
000007a0  6f 79 25 0d 01 ea 34 21  6d 25 3d 28 78 30 2a 63  |oy%...4!m%=(x0*c|
000007b0  2d 79 30 2a 73 2b 73 78  25 29 2a 32 35 36 3a 6d  |-y0*s+sx%)*256:m|
000007c0  25 21 34 3d 28 78 30 2a  73 2b 79 30 2a 63 2b 73  |%!4=(x0*s+y0*c+s|
000007d0  79 25 29 2a 32 35 36 0d  01 f4 36 6d 25 21 38 3d  |y%)*256...6m%!8=|
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000008a0  0d 02 1c 05 e1 0d ff                              |.......|
000008a7