Home » Personal collection » Acorn tapes » Electron_User » Electron_User_tape19b_acorn_eu_1991_february.wav » Dragon
Dragon
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 » Personal collection » Acorn tapes » Electron_User » Electron_User_tape19b_acorn_eu_1991_february.wav |
Filename: | Dragon |
Read OK: | ✔ |
File size: | 0519 bytes |
Load address: | FFFF1900 |
Exec address: | FFFF8023 |
Duplicates
There are 2 duplicate copies of this file in the archive:
- AEW website » mu » mu_5_25_discs_Micro_User_08_12_D-MU08_12.ssd » Dragon
- Personal collection » Acorn tapes » Electron_User » Electron_User_tape19a_acorn_eu_1991_february.wav » Dragon
- Personal collection » Acorn tapes » Electron_User » Electron_User_tape19b_acorn_eu_1991_february.wav » Dragon
File contents
10REM DRAGON CURVE PROGRAM 20REM by Joachim Lous 30REM (c) The Micro User 40: 50REM Trap filing system errors: 60ON ERROR IF ERR>100 GOTO 550 ELSE VDU26:REPORT:PRINT" at line ";ERL:END 70MODE1 80PROCinit 90REPEAT 100INPUT'"How many levels:"levl% 110UNTIL levl%>0 AND levl% <20 120PRINT:DIM side%(levl%) 130FOR A%=0 TO levl% 140side%(A%)=1 150NEXT 160PROCangle(lth,levl%) 170PRINT'"Save this screen? (Y/N):";:a$=GET$ 180IF a$="Y" OR a$="y" INPUT''"Filename:"file$:PRINT'':PROCoscli("SAVE "+file$+" 3000 8000") 190PRINT''"Quit? (Y/N):";:a$=GET$ 200IF a$="n" OR a$="N" RUN 210MODE 7:END 220: 230DEFPROCturn(A%) 240angl%=(angl%+A%)MOD360 250IF angl%<0 angl%=angl%+360 260dir=RAD(angl%) 270ENDPROC 280: 290DEFPROCfowd(A) 300x=x+A*COS(dir):y=y+A*SIN(dir) 310DRAW x,y 320ENDPROC 330: 340DEFPROCinit 350COLOUR 1:PRINT SPC(9) "D R A G O N C U R V E " 360x=300:y=600:angl%=0:dir=0 370lth=800:const=SQR(.5) 380VDU 19,1,1,0,0,0,19,2,4,0,0,0 390VDU 23,1,0;0;0;0;28,3,3,35,2 400GCOL0,2:MOVE0,0:DRAW0,980 410DRAW1279,980:DRAW1279,0:DRAW0,0 420GCOL 0,1:MOVE x,y 430ENDPROC 440: 450DEFPROCangle(lth,levl%) 460levl%=levl%-1:lth=lth*const 470side%(levl%)=-side%(levl%) 480PROCturn(side%(levl%)*45) 490IF levl%>0 PROCangle(lth,levl%) ELSE PROCfowd(lth) 500PROCturn(-side%(levl%)*90) 510IF levl%>0 PROCangle(lth,levl%) ELSE PROCfowd(lth) 520PROCturn(side%(levl%)*45) 530ENDPROC 540: 550REM File error handling: 560REPORT:PRINT'"Try again? (Y/N):"; 570a$=GET$:IF a$="Y" OR a$="y" GOTO 180 ELSE GOTO 190 580GCOL 0,1 590: 600DEFPROCoscli($&700):LOCAL X%,Y%:X%=0:Y%=7:CALL &FFF7:ENDPROC
� DRAGON CURVE PROGRAM � by Joachim Lous � (c) The Micro User (: 2 � Trap filing system errors: <0� � � �>100 � �TfB � �26:�:�" at line ";�:� F�1 P �init Z� d�'"How many levels:"levl% n� levl%>0 � levl% <20 x�:� side%(levl%) �� A%=0 � levl% �side%(A%)=1 �� ��angle(lth,levl%) �&�'"Save this screen? (Y/N):";:a$=� �Q� a$="Y" � a$="y" �''"Filename:"file$:�'':�oscli("SAVE "+file$+" 3000 8000") ��''"Quit? (Y/N):";:a$=� �� a$="n" � a$="N" � � � 7:� �: ���turn(A%) �angl%=(angl%+A%)�360 �� angl%<0 angl%=angl%+360 dir=�(angl%) � : " ��fowd(A) ,x=x+A*�(dir):y=y+A*�(dir) 6 � x,y @� J: T ��init ^)� 1:� �(9) "D R A G O N C U R V E " hx=300:y=600:angl%=0:dir=0 rlth=800:const=�(.5) |� 19,1,1,0,0,0,19,2,4,0,0,0 �� 23,1,0;0;0;0;28,3,3,35,2 ��0,2:�0,0:�0,980 ��1279,980:�1279,0:�0,0 �� 0,1:� x,y �� �: ���angle(lth,levl%) �levl%=levl%-1:lth=lth*const �side%(levl%)=-side%(levl%) ��turn(side%(levl%)*45) �,� levl%>0 �angle(lth,levl%) � �fowd(lth) ��turn(-side%(levl%)*90) �-� levl%>0 �angle(lth,levl%) � �fowd(lth) �turn(side%(levl%)*45) � : &� File error handling: 0�:�'"Try again? (Y/N):"; :*a$=�:� a$="Y" � a$="y" � �tt@ � � �t~@ D � 0,1 N: X.��oscli($&700):� X%,Y%:X%=0:Y%=7:� &FFF7:� �
00000000 0d 00 0a 1a f4 20 44 52 41 47 4f 4e 20 43 55 52 |..... DRAGON CUR| 00000010 56 45 20 50 52 4f 47 52 41 4d 0d 00 14 15 f4 20 |VE PROGRAM..... | 00000020 62 79 20 4a 6f 61 63 68 69 6d 20 4c 6f 75 73 0d |by Joachim Lous.| 00000030 00 1e 19 f4 20 28 63 29 20 54 68 65 20 4d 69 63 |.... (c) The Mic| 00000040 72 6f 20 55 73 65 72 20 0d 00 28 05 3a 0d 00 32 |ro User ..(.:..2| 00000050 20 f4 20 54 72 61 70 20 66 69 6c 69 6e 67 20 73 | . Trap filing s| 00000060 79 73 74 65 6d 20 65 72 72 6f 72 73 3a 0d 00 3c |ystem errors:..<| 00000070 30 ee 20 85 20 e7 20 9f 3e 31 30 30 20 e5 20 8d |0. . . .>100 . .| 00000080 54 66 42 20 8b 20 ef 32 36 3a f6 3a f1 22 20 61 |TfB . .26:.:." a| 00000090 74 20 6c 69 6e 65 20 22 3b 9e 3a e0 20 0d 00 46 |t line ";.:. ..F| 000000a0 06 eb 31 0d 00 50 09 f2 69 6e 69 74 0d 00 5a 05 |..1..P..init..Z.| 000000b0 f5 0d 00 64 1d e8 27 22 48 6f 77 20 6d 61 6e 79 |...d..'"How many| 000000c0 20 6c 65 76 65 6c 73 3a 22 6c 65 76 6c 25 0d 00 | levels:"levl%..| 000000d0 6e 19 fd 20 6c 65 76 6c 25 3e 30 20 80 20 6c 65 |n.. levl%>0 . le| 000000e0 76 6c 25 20 3c 32 30 0d 00 78 14 f1 3a de 20 73 |vl% <20..x..:. s| 000000f0 69 64 65 25 28 6c 65 76 6c 25 29 0d 00 82 13 e3 |ide%(levl%).....| 00000100 20 41 25 3d 30 20 b8 20 6c 65 76 6c 25 20 0d 00 | A%=0 . levl% ..| 00000110 8c 0f 73 69 64 65 25 28 41 25 29 3d 31 0d 00 96 |..side%(A%)=1...| 00000120 05 ed 0d 00 a0 15 f2 61 6e 67 6c 65 28 6c 74 68 |.......angle(lth| 00000130 2c 6c 65 76 6c 25 29 0d 00 aa 26 f1 27 22 53 61 |,levl%)...&.'"Sa| 00000140 76 65 20 74 68 69 73 20 73 63 72 65 65 6e 3f 20 |ve this screen? | 00000150 28 59 2f 4e 29 3a 22 3b 3a 61 24 3d be 0d 00 b4 |(Y/N):";:a$=....| 00000160 51 e7 20 61 24 3d 22 59 22 20 84 20 20 61 24 3d |Q. a$="Y" . a$=| 00000170 22 79 22 20 e8 27 27 22 46 69 6c 65 6e 61 6d 65 |"y" .''"Filename| 00000180 3a 22 66 69 6c 65 24 3a f1 27 27 3a f2 6f 73 63 |:"file$:.'':.osc| 00000190 6c 69 28 22 53 41 56 45 20 22 2b 66 69 6c 65 24 |li("SAVE "+file$| 000001a0 2b 22 20 33 30 30 30 20 38 30 30 30 22 29 0d 00 |+" 3000 8000")..| 000001b0 be 1b f1 27 27 22 51 75 69 74 3f 20 28 59 2f 4e |...''"Quit? (Y/N| 000001c0 29 3a 22 3b 3a 61 24 3d be 0d 00 c8 18 e7 20 61 |):";:a$=...... a| 000001d0 24 3d 22 6e 22 20 84 20 61 24 3d 22 4e 22 20 f9 |$="n" . a$="N" .| 000001e0 20 0d 00 d2 09 eb 20 37 3a e0 0d 00 dc 05 3a 0d | ..... 7:.....:.| 000001f0 00 e6 0e dd f2 74 75 72 6e 28 41 25 29 0d 00 f0 |.....turn(A%)...| 00000200 18 61 6e 67 6c 25 3d 28 61 6e 67 6c 25 2b 41 25 |.angl%=(angl%+A%| 00000210 29 83 33 36 30 0d 00 fa 1d e7 20 61 6e 67 6c 25 |).360..... angl%| 00000220 3c 30 20 61 6e 67 6c 25 3d 61 6e 67 6c 25 2b 33 |<0 angl%=angl%+3| 00000230 36 30 0d 01 04 10 64 69 72 3d b2 28 61 6e 67 6c |60....dir=.(angl| 00000240 25 29 0d 01 0e 05 e1 0d 01 18 05 3a 0d 01 22 0d |%).........:..".| 00000250 dd f2 66 6f 77 64 28 41 29 0d 01 2c 1d 78 3d 78 |..fowd(A)..,.x=x| 00000260 2b 41 2a 9b 28 64 69 72 29 3a 79 3d 79 2b 41 2a |+A*.(dir):y=y+A*| 00000270 b5 28 64 69 72 29 0d 01 36 09 df 20 78 2c 79 0d |.(dir)..6.. x,y.| 00000280 01 40 05 e1 0d 01 4a 05 3a 0d 01 54 0a dd f2 69 |.@....J.:..T...i| 00000290 6e 69 74 0d 01 5e 29 fb 20 31 3a f1 20 89 28 39 |nit..^). 1:. .(9| 000002a0 29 20 22 44 20 52 20 41 20 47 20 4f 20 4e 20 20 |) "D R A G O N | 000002b0 20 43 20 55 20 52 20 56 20 45 20 22 0d 01 68 1d | C U R V E "..h.| 000002c0 78 3d 33 30 30 3a 79 3d 36 30 30 3a 61 6e 67 6c |x=300:y=600:angl| 000002d0 25 3d 30 3a 64 69 72 3d 30 0d 01 72 17 6c 74 68 |%=0:dir=0..r.lth| 000002e0 3d 38 30 30 3a 63 6f 6e 73 74 3d b6 28 2e 35 29 |=800:const=.(.5)| 000002f0 0d 01 7c 1f ef 20 31 39 2c 31 2c 31 2c 30 2c 30 |..|.. 19,1,1,0,0| 00000300 2c 30 2c 31 39 2c 32 2c 34 2c 30 2c 30 2c 30 0d |,0,19,2,4,0,0,0.| 00000310 01 86 1e ef 20 32 33 2c 31 2c 30 3b 30 3b 30 3b |.... 23,1,0;0;0;| 00000320 30 3b 32 38 2c 33 2c 33 2c 33 35 2c 32 0d 01 90 |0;28,3,3,35,2...| 00000330 15 e6 30 2c 32 3a ec 30 2c 30 3a df 30 2c 39 38 |..0,2:.0,0:.0,98| 00000340 30 20 0d 01 9a 1a df 31 32 37 39 2c 39 38 30 3a |0 .....1279,980:| 00000350 df 31 32 37 39 2c 30 3a df 30 2c 30 0d 01 a4 0f |.1279,0:.0,0....| 00000360 e6 20 30 2c 31 3a ec 20 78 2c 79 0d 01 ae 05 e1 |. 0,1:. x,y.....| 00000370 0d 01 b8 05 3a 0d 01 c2 16 dd f2 61 6e 67 6c 65 |....:......angle| 00000380 28 6c 74 68 2c 6c 65 76 6c 25 29 0d 01 cc 1f 6c |(lth,levl%)....l| 00000390 65 76 6c 25 3d 6c 65 76 6c 25 2d 31 3a 6c 74 68 |evl%=levl%-1:lth| 000003a0 3d 6c 74 68 2a 63 6f 6e 73 74 0d 01 d6 1e 73 69 |=lth*const....si| 000003b0 64 65 25 28 6c 65 76 6c 25 29 3d 2d 73 69 64 65 |de%(levl%)=-side| 000003c0 25 28 6c 65 76 6c 25 29 0d 01 e0 1b f2 74 75 72 |%(levl%).....tur| 000003d0 6e 28 73 69 64 65 25 28 6c 65 76 6c 25 29 2a 34 |n(side%(levl%)*4| 000003e0 35 29 20 0d 01 ea 2c e7 20 6c 65 76 6c 25 3e 30 |5) ...,. levl%>0| 000003f0 20 f2 61 6e 67 6c 65 28 6c 74 68 2c 6c 65 76 6c | .angle(lth,levl| 00000400 25 29 20 8b 20 f2 66 6f 77 64 28 6c 74 68 29 0d |%) . .fowd(lth).| 00000410 01 f4 1b f2 74 75 72 6e 28 2d 73 69 64 65 25 28 |....turn(-side%(| 00000420 6c 65 76 6c 25 29 2a 39 30 29 0d 01 fe 2d e7 20 |levl%)*90)...-. | 00000430 6c 65 76 6c 25 3e 30 20 f2 61 6e 67 6c 65 28 6c |levl%>0 .angle(l| 00000440 74 68 2c 6c 65 76 6c 25 29 20 8b 20 f2 66 6f 77 |th,levl%) . .fow| 00000450 64 28 6c 74 68 29 20 0d 02 08 1a f2 74 75 72 6e |d(lth) .....turn| 00000460 28 73 69 64 65 25 28 6c 65 76 6c 25 29 2a 34 35 |(side%(levl%)*45| 00000470 29 0d 02 12 05 e1 0d 02 1c 05 3a 0d 02 26 1a f4 |).........:..&..| 00000480 20 46 69 6c 65 20 65 72 72 6f 72 20 68 61 6e 64 | File error hand| 00000490 6c 69 6e 67 3a 0d 02 30 1c f6 3a f1 27 22 54 72 |ling:..0..:.'"Tr| 000004a0 79 20 61 67 61 69 6e 3f 20 28 59 2f 4e 29 3a 22 |y again? (Y/N):"| 000004b0 3b 0d 02 3a 2a 61 24 3d be 3a e7 20 61 24 3d 22 |;..:*a$=.:. a$="| 000004c0 59 22 20 84 20 61 24 3d 22 79 22 20 e5 20 8d 74 |Y" . a$="y" . .t| 000004d0 74 40 20 8b 20 e5 20 8d 74 7e 40 0d 02 44 09 e6 |t@ . . .t~@..D..| 000004e0 20 30 2c 31 0d 02 4e 05 3a 0d 02 58 2e dd f2 6f | 0,1..N.:..X...o| 000004f0 73 63 6c 69 28 24 26 37 30 30 29 3a ea 20 58 25 |scli($&700):. X%| 00000500 2c 59 25 3a 58 25 3d 30 3a 59 25 3d 37 3a d6 20 |,Y%:X%=0:Y%=7:. | 00000510 26 46 46 46 37 3a e1 0d ff |&FFF7:...| 00000519