Home » Archimedes archive » Acorn User » AU 1997-06 B.adf » Regulars » StarInfo/Mellor/Electric
StarInfo/Mellor/Electric
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 1997-06 B.adf » Regulars |
| Filename: | StarInfo/Mellor/Electric |
| Read OK: | ✔ |
| File size: | 04D3 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
10REM >Electric 20REM Arcs of electricity? 30REM By Philip Mellor (age 15) 40REM Acorn User/Star Info 50: 60REM Error trapping 70ON ERROR REPORT:PRINT" - ";ERL/10:END 80: 90REM Change modes, ensuring there is enough memory for two mode 9 screen banks 100MODE12:MODE9 110: 120REM Turn that flashing cursor off 130OFF 140: 150REM Change the palette to a range of blue to magenta 160FOR I=1 TO 15 170COLOUR I,255-I*17,0,255 180NEXT 190: 200REM Set up the variables and arrays 210fr=1:ball=80:r=48 220max=5:REM Raise or lower this depending on your computer's speed :-) 230DIM a(max),sx(max),sy(max) 240: 250FOR I=1 TO max 260a(I)=RND(360) 270sx(I)=640+(ball*SIN RAD a(I)) 280sy(I)=512+(ball*COS RAD a(I)) 290NEXT 300: 310REM Work out the start points for each arc of electricity 320REPEAT 330SYS6,112,fr:CLS 340GCOL7 350CIRCLE 640,512,ball 360FOR I=1 TO max 370PROCpath(sx(I),sy(I),a(I)+RND(8)-RND(16),1) 380IF RND(25)=1 a(I)=RND(360):sx(I)=640+(ball*SIN RAD a(I)):sy(I)=512+(ball*COS RAD a(I)) 390NEXT 400SYS6,113,fr 410fr=3-fr:WAIT 420UNTIL0 430: 440END 450: 460DEF PROCpath(x,y,a,c) 470GCOL c 480MOVE x,y 490q=r*SIN RAD a 500w=r*COS RAD a 510x+=q:y+=w 520IF POINT(x,y)<>-1 DRAW x,y:ok=TRUE ELSE ok=FALSE 530IF ok=TRUE THEN 540IF RND(20)=1 THEN 550na=a 560IF RND(2)=1 na+=RND(20)+10 ELSE na-=RND(20)+10 570PROCpath(x,y,na,c) 580ENDIF 590IF RND(2)=1 a+=RND(20) ELSE a-=RND(20) 600PROCpath(x,y,a,c+1) 610ELSE 620CIRCLE FILL x,y,32 630ENDIF 640ENDPROC
� >Electric � Arcs of electricity? � By Philip Mellor (age 15) (� Acorn User/Star Info 2: <� Error trapping F� � �:�" - ";�/10:� P: ZO� Change modes, ensuring there is enough memory for two mode 9 screen banks d �12:�9 n: x#� Turn that flashing cursor off �� �: �6� Change the palette to a range of blue to magenta �� I=1 � 15 �� I,255-I*17,0,255 �� �: �%� Set up the variables and arrays �fr=1:ball=80:r=48 �Fmax=5:� Raise or lower this depending on your computer's speed :-) � � a(max),sx(max),sy(max) �: �� I=1 � max a(I)=�(360) sx(I)=640+(ball*� � a(I)) sy(I)=512+(ball*� � a(I)) "� ,: 6;� Work out the start points for each arc of electricity @� Jș6,112,fr:� T�7 ^ȏ 640,512,ball h� I=1 � max r(�path(sx(I),sy(I),a(I)+�(8)-�(16),1) |M� �(25)=1 a(I)=�(360):sx(I)=640+(ball*� � a(I)):sy(I)=512+(ball*� � a(I)) �� �ș6,113,fr �fr=3-fr:Ȗ ��0 �: �� �: �� �path(x,y,a,c) �� c � � x,y � q=r*� � a � w=r*� � a � x+=q:y+=w !� �x,y)<>-1 � x,y:ok=� � ok=� � ok=� � � �(20)=1 � &na=a 0(� �(2)=1 na+=�(20)+10 � na-=�(20)+10 :�path(x,y,na,c) D� N � �(2)=1 a+=�(20) � a-=�(20) X�path(x,y,a,c+1) b� lȏ Ȑ x,y,32 v� �� �
00000000 0d 00 0a 0f f4 20 3e 45 6c 65 63 74 72 69 63 0d |..... >Electric.| 00000010 00 14 1b f4 20 20 41 72 63 73 20 6f 66 20 65 6c |.... Arcs of el| 00000020 65 63 74 72 69 63 69 74 79 3f 0d 00 1e 20 f4 20 |ectricity?... . | 00000030 20 42 79 20 50 68 69 6c 69 70 20 4d 65 6c 6c 6f | By Philip Mello| 00000040 72 20 28 61 67 65 20 31 35 29 0d 00 28 1b f4 20 |r (age 15)..(.. | 00000050 20 41 63 6f 72 6e 20 55 73 65 72 2f 53 74 61 72 | Acorn User/Star| 00000060 20 49 6e 66 6f 0d 00 32 05 3a 0d 00 3c 14 f4 20 | Info..2.:..<.. | 00000070 45 72 72 6f 72 20 74 72 61 70 70 69 6e 67 0d 00 |Error trapping..| 00000080 46 17 ee 20 85 20 f6 3a f1 22 20 2d 20 22 3b 9e |F.. . .:." - ";.| 00000090 2f 31 30 3a e0 0d 00 50 05 3a 0d 00 5a 4f f4 20 |/10:...P.:..ZO. | 000000a0 43 68 61 6e 67 65 20 6d 6f 64 65 73 2c 20 65 6e |Change modes, en| 000000b0 73 75 72 69 6e 67 20 74 68 65 72 65 20 69 73 20 |suring there is | 000000c0 65 6e 6f 75 67 68 20 6d 65 6d 6f 72 79 20 66 6f |enough memory fo| 000000d0 72 20 74 77 6f 20 6d 6f 64 65 20 39 20 73 63 72 |r two mode 9 scr| 000000e0 65 65 6e 20 62 61 6e 6b 73 0d 00 64 0a eb 31 32 |een banks..d..12| 000000f0 3a eb 39 0d 00 6e 05 3a 0d 00 78 23 f4 20 54 75 |:.9..n.:..x#. Tu| 00000100 72 6e 20 74 68 61 74 20 66 6c 61 73 68 69 6e 67 |rn that flashing| 00000110 20 63 75 72 73 6f 72 20 6f 66 66 0d 00 82 05 87 | cursor off.....| 00000120 0d 00 8c 05 3a 0d 00 96 36 f4 20 43 68 61 6e 67 |....:...6. Chang| 00000130 65 20 74 68 65 20 70 61 6c 65 74 74 65 20 74 6f |e the palette to| 00000140 20 61 20 72 61 6e 67 65 20 6f 66 20 62 6c 75 65 | a range of blue| 00000150 20 74 6f 20 6d 61 67 65 6e 74 61 0d 00 a0 0e e3 | to magenta.....| 00000160 20 49 3d 31 20 b8 20 31 35 0d 00 aa 16 fb 20 49 | I=1 . 15..... I| 00000170 2c 32 35 35 2d 49 2a 31 37 2c 30 2c 32 35 35 0d |,255-I*17,0,255.| 00000180 00 b4 05 ed 0d 00 be 05 3a 0d 00 c8 25 f4 20 53 |........:...%. S| 00000190 65 74 20 75 70 20 74 68 65 20 76 61 72 69 61 62 |et up the variab| 000001a0 6c 65 73 20 61 6e 64 20 61 72 72 61 79 73 0d 00 |les and arrays..| 000001b0 d2 15 66 72 3d 31 3a 62 61 6c 6c 3d 38 30 3a 72 |..fr=1:ball=80:r| 000001c0 3d 34 38 0d 00 dc 46 6d 61 78 3d 35 3a f4 20 52 |=48...Fmax=5:. R| 000001d0 61 69 73 65 20 6f 72 20 6c 6f 77 65 72 20 74 68 |aise or lower th| 000001e0 69 73 20 64 65 70 65 6e 64 69 6e 67 20 6f 6e 20 |is depending on | 000001f0 79 6f 75 72 20 63 6f 6d 70 75 74 65 72 27 73 20 |your computer's | 00000200 73 70 65 65 64 20 3a 2d 29 0d 00 e6 1c de 20 61 |speed :-)..... a| 00000210 28 6d 61 78 29 2c 73 78 28 6d 61 78 29 2c 73 79 |(max),sx(max),sy| 00000220 28 6d 61 78 29 0d 00 f0 05 3a 0d 00 fa 0f e3 20 |(max)....:..... | 00000230 49 3d 31 20 b8 20 6d 61 78 0d 01 04 0f 61 28 49 |I=1 . max....a(I| 00000240 29 3d b3 28 33 36 30 29 0d 01 0e 1d 73 78 28 49 |)=.(360)....sx(I| 00000250 29 3d 36 34 30 2b 28 62 61 6c 6c 2a b5 20 b2 20 |)=640+(ball*. . | 00000260 61 28 49 29 29 0d 01 18 1d 73 79 28 49 29 3d 35 |a(I))....sy(I)=5| 00000270 31 32 2b 28 62 61 6c 6c 2a 9b 20 b2 20 61 28 49 |12+(ball*. . a(I| 00000280 29 29 0d 01 22 05 ed 0d 01 2c 05 3a 0d 01 36 3b |)).."....,.:..6;| 00000290 f4 20 57 6f 72 6b 20 6f 75 74 20 74 68 65 20 73 |. Work out the s| 000002a0 74 61 72 74 20 70 6f 69 6e 74 73 20 66 6f 72 20 |tart points for | 000002b0 65 61 63 68 20 61 72 63 20 6f 66 20 65 6c 65 63 |each arc of elec| 000002c0 74 72 69 63 69 74 79 0d 01 40 05 f5 0d 01 4a 10 |tricity..@....J.| 000002d0 c8 99 36 2c 31 31 32 2c 66 72 3a db 0d 01 54 06 |..6,112,fr:...T.| 000002e0 e6 37 0d 01 5e 13 c8 8f 20 36 34 30 2c 35 31 32 |.7..^... 640,512| 000002f0 2c 62 61 6c 6c 0d 01 68 0f e3 20 49 3d 31 20 b8 |,ball..h.. I=1 .| 00000300 20 6d 61 78 0d 01 72 28 f2 70 61 74 68 28 73 78 | max..r(.path(sx| 00000310 28 49 29 2c 73 79 28 49 29 2c 61 28 49 29 2b b3 |(I),sy(I),a(I)+.| 00000320 28 38 29 2d b3 28 31 36 29 2c 31 29 0d 01 7c 4d |(8)-.(16),1)..|M| 00000330 e7 20 b3 28 32 35 29 3d 31 20 61 28 49 29 3d b3 |. .(25)=1 a(I)=.| 00000340 28 33 36 30 29 3a 73 78 28 49 29 3d 36 34 30 2b |(360):sx(I)=640+| 00000350 28 62 61 6c 6c 2a b5 20 b2 20 61 28 49 29 29 3a |(ball*. . a(I)):| 00000360 73 79 28 49 29 3d 35 31 32 2b 28 62 61 6c 6c 2a |sy(I)=512+(ball*| 00000370 9b 20 b2 20 61 28 49 29 29 0d 01 86 05 ed 0d 01 |. . a(I)).......| 00000380 90 0e c8 99 36 2c 31 31 33 2c 66 72 0d 01 9a 0e |....6,113,fr....| 00000390 66 72 3d 33 2d 66 72 3a c8 96 0d 01 a4 06 fd 30 |fr=3-fr:.......0| 000003a0 0d 01 ae 05 3a 0d 01 b8 05 e0 0d 01 c2 05 3a 0d |....:.........:.| 000003b0 01 cc 14 dd 20 f2 70 61 74 68 28 78 2c 79 2c 61 |.... .path(x,y,a| 000003c0 2c 63 29 0d 01 d6 07 e6 20 63 0d 01 e0 09 ec 20 |,c)..... c..... | 000003d0 78 2c 79 0d 01 ea 0d 71 3d 72 2a b5 20 b2 20 61 |x,y....q=r*. . a| 000003e0 0d 01 f4 0d 77 3d 72 2a 9b 20 b2 20 61 0d 01 fe |....w=r*. . a...| 000003f0 0d 78 2b 3d 71 3a 79 2b 3d 77 0d 02 08 21 e7 20 |.x+=q:y+=w...!. | 00000400 b0 78 2c 79 29 3c 3e 2d 31 20 df 20 78 2c 79 3a |.x,y)<>-1 . x,y:| 00000410 6f 6b 3d b9 20 8b 20 6f 6b 3d a3 0d 02 12 0c e7 |ok=. . ok=......| 00000420 20 6f 6b 3d b9 20 8c 0d 02 1c 0f e7 20 b3 28 32 | ok=. ...... .(2| 00000430 30 29 3d 31 20 8c 0d 02 26 08 6e 61 3d 61 0d 02 |0)=1 ...&.na=a..| 00000440 30 28 e7 20 b3 28 32 29 3d 31 20 6e 61 2b 3d b3 |0(. .(2)=1 na+=.| 00000450 28 32 30 29 2b 31 30 20 8b 20 6e 61 2d 3d b3 28 |(20)+10 . na-=.(| 00000460 32 30 29 2b 31 30 0d 02 3a 13 f2 70 61 74 68 28 |20)+10..:..path(| 00000470 78 2c 79 2c 6e 61 2c 63 29 0d 02 44 05 cd 0d 02 |x,y,na,c)..D....| 00000480 4e 20 e7 20 b3 28 32 29 3d 31 20 61 2b 3d b3 28 |N . .(2)=1 a+=.(| 00000490 32 30 29 20 8b 20 61 2d 3d b3 28 32 30 29 0d 02 |20) . a-=.(20)..| 000004a0 58 14 f2 70 61 74 68 28 78 2c 79 2c 61 2c 63 2b |X..path(x,y,a,c+| 000004b0 31 29 0d 02 62 05 cc 0d 02 6c 10 c8 8f 20 c8 90 |1)..b....l... ..| 000004c0 20 78 2c 79 2c 33 32 0d 02 76 05 cd 0d 02 80 05 | x,y,32..v......| 000004d0 e1 0d ff |...| 000004d3
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