Home » Archimedes archive » Archimedes World » AW-1991-08.adf » August91 » !AWAug91/Goodies/TurtleGRFX/SSquare
!AWAug91/Goodies/TurtleGRFX/SSquare
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 » Archimedes World » AW-1991-08.adf » August91 |
Filename: | !AWAug91/Goodies/TurtleGRFX/SSquare |
Read OK: | ✔ |
File size: | 085C bytes |
Load address: | 0000 |
Exec address: | 0000 |
File contents
10REM>SSquare 20 30REM Program: SSquare v1.01 10 Mar 1991 40REM Author: I.M.Kinghan 1991 50REM Purpose: Draw Sierpinkski Square using Turtle Graphics. 60REM Copyright: Archimedes World August 1991 70 80LIBRARY "$.TurtleGRFX.TurtleGRFX" 90MODE 15 100GCOL 0,128 110TINT 3,192 120ON 130CLG 140 150INPUT "Level,1-4",Level% 160IF Level%<1 THEN Level%=1 170IF Level%>4 THEN Level%=4 171INPUT "Show Turtle (y/n)",Turtle$ 180OFF 190CLG 200 210PROCInit 211IF Turtle$="y" OR Turtle$="Y" THEN PROCtshow 220PROCSSquare(Level%,Step%,Angle,Stack%,WorkStackSize%) 230END 240 250DEFPROCGlobals 260X%=250 270Y%=100 280WorkStackSize%=8000 290TurtleStackSize%=128 300Angle=DEG PI/2 310Step%=40 DIV Level% 320Go%=1 330Right%=2 340Left%=3 350Push%=4 360Pop%=5 370Up%=6 380Down%=7 390ENDPROC 400 410DEFPROCInit 420PROCGlobals 430DIM Stack% WorkStackSize% 440PROCtstart 450PROCtstack(TurtleStackSize%) 460PROCtjump(X%,Y%,0) 470PROCtgcol(0,63) 480PROCtpen(1) 490ENDPROC 500 510DEFPROCSSquare(level%,step%,angle,stack%,stacksize%) 520LOCAL ptr% 530ptr%=stacksize%: stack%?ptr%=0 540ptr%-=1: stack%?ptr%=Go% 550ptr%-=1: stack%?ptr%=Right% 560ptr%-=1: stack%?ptr%=Go% 570ptr%-=1: stack%?ptr%=Right% 580ptr%-=1: stack%?ptr%=Go% 590ptr%-=1: stack%?ptr%=Right% 600ptr%-=1: stack%?ptr%=Go% 610WHILE ptr%<stacksize% 620 CASE stack%?ptr% OF 630 WHEN Go% 640 IF level%=0 THEN 650 PROCtgo(step%) 660 ELSE 670 IF ptr%<12 THEN PROCStackError 680 stack%?ptr%=Up%: ptr%-=1 690 stack%?ptr%=Go%: ptr%-=1 700 stack%?ptr%=Go%: ptr%-=1 710 stack%?ptr%=Right%: ptr%-=1 720 stack%?ptr%=Go%: ptr%-=1 730 stack%?ptr%=Right%: ptr%-=1 740 stack%?ptr%=Go%: ptr%-=1 750 stack%?ptr%=Right%: ptr%-=1 760 stack%?ptr%=Go%: ptr%-=1 770 stack%?ptr%=Right%: ptr%-=1 780 stack%?ptr%=Go%: ptr%-=1 790 stack%?ptr%=Go%: ptr%-=1 800 stack%?ptr%=Down%: ptr%-=1 810 ENDIF 820 WHEN Right% 830 PROCtturn(angle) 840 WHEN Left% 850 PROCtturn(-angle) 860 WHEN Push% 870 PROCtrecord 880 WHEN Pop% 890 PROCtrestore 900 WHEN Down% 910 level%-=1 940 WHEN Up% 950 level%+=1 980 ENDCASE 990 ptr%+=1 1000ENDWHILE 1010ENDPROC 1020 1030DEFPROCStackError 1040ERROR 255,"Out of working stack. Increase WorkStackSize%" 1050END 1060ENDPROC
�>SSquare *� Program: SSquare v1.01 10 Mar 1991 (!� Author: I.M.Kinghan 1991 2?� Purpose: Draw Sierpinkski Square using Turtle Graphics. </� Copyright: Archimedes World August 1991 F P ț "$.TurtleGRFX.TurtleGRFX" Z� 15 d� 0,128 nȜ 3,192 x� �� � �� "Level,1-4",Level% �� Level%<1 � Level%=1 �� Level%>4 � Level%=4 �!� "Show Turtle (y/n)",Turtle$ �� �� � � �Init �(� Turtle$="y" � Turtle$="Y" � �tshow �6�SSquare(Level%,Step%,Angle,Stack%,WorkStackSize%) �� � � ��Globals X%=250 Y%=100 WorkStackSize%=8000 "TurtleStackSize%=128 ,Angle=� �/2 6Step%=40 � Level% @ Go%=1 JRight%=2 TLeft%=3 ^Push%=4 h Pop%=5 r Up%=6 |Down%=7 �� � � ��Init ��Globals �� Stack% WorkStackSize% ��tstart ��tstack(TurtleStackSize%) ��tjump(X%,Y%,0) ��tgcol(0,63) ��tpen(1) �� � �3��SSquare(level%,step%,angle,stack%,stacksize%) � ptr% "ptr%=stacksize%: stack%?ptr%=0 ptr%-=1: stack%?ptr%=Go% &ptr%-=1: stack%?ptr%=Right% 0ptr%-=1: stack%?ptr%=Go% :ptr%-=1: stack%?ptr%=Right% Dptr%-=1: stack%?ptr%=Go% Nptr%-=1: stack%?ptr%=Right% Xptr%-=1: stack%?ptr%=Go% bȕ ptr%<stacksize% l Ȏ stack%?ptr% � v � Go% � � level%=0 � � �tgo(step%) � � �$ � ptr%<12 � �StackError �% stack%?ptr%=Up%: ptr%-=1 �% stack%?ptr%=Go%: ptr%-=1 �% stack%?ptr%=Go%: ptr%-=1 �( stack%?ptr%=Right%: ptr%-=1 �% stack%?ptr%=Go%: ptr%-=1 �( stack%?ptr%=Right%: ptr%-=1 �% stack%?ptr%=Go%: ptr%-=1 �( stack%?ptr%=Right%: ptr%-=1 �% stack%?ptr%=Go%: ptr%-=1 ( stack%?ptr%=Right%: ptr%-=1 % stack%?ptr%=Go%: ptr%-=1 % stack%?ptr%=Go%: ptr%-=1 ' stack%?ptr%=Down%: ptr%-=1 * � 4 � Right% > �tturn(angle) H � Left% R �tturn(-angle) \ � Push% f �trecord p � Pop% z �trestore � � Down% � level%-=1 � � Up% � level%+=1 � � � ptr%+=1 �� �� � ��StackError 9� 255,"Out of working stack. Increase WorkStackSize%" � $� �
00000000 0d 00 0a 0d f4 3e 53 53 71 75 61 72 65 0d 00 14 |.....>SSquare...| 00000010 04 0d 00 1e 2a f4 20 20 20 50 72 6f 67 72 61 6d |....*. Program| 00000020 3a 20 53 53 71 75 61 72 65 20 76 31 2e 30 31 20 |: SSquare v1.01 | 00000030 31 30 20 4d 61 72 20 31 39 39 31 0d 00 28 21 f4 |10 Mar 1991..(!.| 00000040 20 20 20 41 75 74 68 6f 72 3a 20 20 49 2e 4d 2e | Author: I.M.| 00000050 4b 69 6e 67 68 61 6e 20 31 39 39 31 0d 00 32 3f |Kinghan 1991..2?| 00000060 f4 20 20 20 50 75 72 70 6f 73 65 3a 20 44 72 61 |. Purpose: Dra| 00000070 77 20 53 69 65 72 70 69 6e 6b 73 6b 69 20 53 71 |w Sierpinkski Sq| 00000080 75 61 72 65 20 75 73 69 6e 67 20 54 75 72 74 6c |uare using Turtl| 00000090 65 20 47 72 61 70 68 69 63 73 2e 0d 00 3c 2f f4 |e Graphics...</.| 000000a0 20 20 20 43 6f 70 79 72 69 67 68 74 3a 20 41 72 | Copyright: Ar| 000000b0 63 68 69 6d 65 64 65 73 20 57 6f 72 6c 64 20 41 |chimedes World A| 000000c0 75 67 75 73 74 20 31 39 39 31 0d 00 46 04 0d 00 |ugust 1991..F...| 000000d0 50 20 c8 9b 20 22 24 2e 54 75 72 74 6c 65 47 52 |P .. "$.TurtleGR| 000000e0 46 58 2e 54 75 72 74 6c 65 47 52 46 58 22 0d 00 |FX.TurtleGRFX"..| 000000f0 5a 08 eb 20 31 35 0d 00 64 0b e6 20 30 2c 31 32 |Z.. 15..d.. 0,12| 00000100 38 0d 00 6e 0c c8 9c 20 33 2c 31 39 32 0d 00 78 |8..n... 3,192..x| 00000110 05 ee 0d 00 82 05 da 0d 00 8c 04 0d 00 96 18 e8 |................| 00000120 20 22 4c 65 76 65 6c 2c 31 2d 34 22 2c 4c 65 76 | "Level,1-4",Lev| 00000130 65 6c 25 0d 00 a0 19 e7 20 4c 65 76 65 6c 25 3c |el%..... Level%<| 00000140 31 20 8c 20 4c 65 76 65 6c 25 3d 31 0d 00 aa 19 |1 . Level%=1....| 00000150 e7 20 4c 65 76 65 6c 25 3e 34 20 8c 20 4c 65 76 |. Level%>4 . Lev| 00000160 65 6c 25 3d 34 0d 00 ab 21 e8 20 22 53 68 6f 77 |el%=4...!. "Show| 00000170 20 54 75 72 74 6c 65 20 28 79 2f 6e 29 22 2c 54 | Turtle (y/n)",T| 00000180 75 72 74 6c 65 24 0d 00 b4 05 87 0d 00 be 05 da |urtle$..........| 00000190 0d 00 c8 04 0d 00 d2 09 f2 49 6e 69 74 0d 00 d3 |.........Init...| 000001a0 28 e7 20 54 75 72 74 6c 65 24 3d 22 79 22 20 84 |(. Turtle$="y" .| 000001b0 20 54 75 72 74 6c 65 24 3d 22 59 22 20 8c 20 f2 | Turtle$="Y" . .| 000001c0 74 73 68 6f 77 0d 00 dc 36 f2 53 53 71 75 61 72 |tshow...6.SSquar| 000001d0 65 28 4c 65 76 65 6c 25 2c 53 74 65 70 25 2c 41 |e(Level%,Step%,A| 000001e0 6e 67 6c 65 2c 53 74 61 63 6b 25 2c 57 6f 72 6b |ngle,Stack%,Work| 000001f0 53 74 61 63 6b 53 69 7a 65 25 29 0d 00 e6 05 e0 |StackSize%).....| 00000200 0d 00 f0 04 0d 00 fa 0d dd f2 47 6c 6f 62 61 6c |..........Global| 00000210 73 0d 01 04 0a 58 25 3d 32 35 30 0d 01 0e 0a 59 |s....X%=250....Y| 00000220 25 3d 31 30 30 0d 01 18 17 57 6f 72 6b 53 74 61 |%=100....WorkSta| 00000230 63 6b 53 69 7a 65 25 3d 38 30 30 30 0d 01 22 18 |ckSize%=8000..".| 00000240 54 75 72 74 6c 65 53 74 61 63 6b 53 69 7a 65 25 |TurtleStackSize%| 00000250 3d 31 32 38 0d 01 2c 0f 41 6e 67 6c 65 3d 9d 20 |=128..,.Angle=. | 00000260 af 2f 32 0d 01 36 15 53 74 65 70 25 3d 34 30 20 |./2..6.Step%=40 | 00000270 81 20 4c 65 76 65 6c 25 0d 01 40 09 47 6f 25 3d |. Level%..@.Go%=| 00000280 31 0d 01 4a 0c 52 69 67 68 74 25 3d 32 0d 01 54 |1..J.Right%=2..T| 00000290 0b 4c 65 66 74 25 3d 33 0d 01 5e 0b 50 75 73 68 |.Left%=3..^.Push| 000002a0 25 3d 34 0d 01 68 0a 50 6f 70 25 3d 35 0d 01 72 |%=4..h.Pop%=5..r| 000002b0 09 55 70 25 3d 36 0d 01 7c 0b 44 6f 77 6e 25 3d |.Up%=6..|.Down%=| 000002c0 37 0d 01 86 05 e1 0d 01 90 04 0d 01 9a 0a dd f2 |7...............| 000002d0 49 6e 69 74 0d 01 a4 0c f2 47 6c 6f 62 61 6c 73 |Init.....Globals| 000002e0 0d 01 ae 1b de 20 53 74 61 63 6b 25 20 57 6f 72 |..... Stack% Wor| 000002f0 6b 53 74 61 63 6b 53 69 7a 65 25 0d 01 b8 0b f2 |kStackSize%.....| 00000300 74 73 74 61 72 74 0d 01 c2 1d f2 74 73 74 61 63 |tstart.....tstac| 00000310 6b 28 54 75 72 74 6c 65 53 74 61 63 6b 53 69 7a |k(TurtleStackSiz| 00000320 65 25 29 0d 01 cc 13 f2 74 6a 75 6d 70 28 58 25 |e%).....tjump(X%| 00000330 2c 59 25 2c 30 29 0d 01 d6 10 f2 74 67 63 6f 6c |,Y%,0).....tgcol| 00000340 28 30 2c 36 33 29 0d 01 e0 0c f2 74 70 65 6e 28 |(0,63).....tpen(| 00000350 31 29 0d 01 ea 05 e1 0d 01 f4 04 0d 01 fe 33 dd |1)............3.| 00000360 f2 53 53 71 75 61 72 65 28 6c 65 76 65 6c 25 2c |.SSquare(level%,| 00000370 73 74 65 70 25 2c 61 6e 67 6c 65 2c 73 74 61 63 |step%,angle,stac| 00000380 6b 25 2c 73 74 61 63 6b 73 69 7a 65 25 29 0d 02 |k%,stacksize%)..| 00000390 08 0a ea 20 70 74 72 25 0d 02 12 22 70 74 72 25 |... ptr%..."ptr%| 000003a0 3d 73 74 61 63 6b 73 69 7a 65 25 3a 20 73 74 61 |=stacksize%: sta| 000003b0 63 6b 25 3f 70 74 72 25 3d 30 0d 02 1c 1c 70 74 |ck%?ptr%=0....pt| 000003c0 72 25 2d 3d 31 3a 20 73 74 61 63 6b 25 3f 70 74 |r%-=1: stack%?pt| 000003d0 72 25 3d 47 6f 25 0d 02 26 1f 70 74 72 25 2d 3d |r%=Go%..&.ptr%-=| 000003e0 31 3a 20 73 74 61 63 6b 25 3f 70 74 72 25 3d 52 |1: stack%?ptr%=R| 000003f0 69 67 68 74 25 0d 02 30 1c 70 74 72 25 2d 3d 31 |ight%..0.ptr%-=1| 00000400 3a 20 73 74 61 63 6b 25 3f 70 74 72 25 3d 47 6f |: stack%?ptr%=Go| 00000410 25 0d 02 3a 1f 70 74 72 25 2d 3d 31 3a 20 73 74 |%..:.ptr%-=1: st| 00000420 61 63 6b 25 3f 70 74 72 25 3d 52 69 67 68 74 25 |ack%?ptr%=Right%| 00000430 0d 02 44 1c 70 74 72 25 2d 3d 31 3a 20 73 74 61 |..D.ptr%-=1: sta| 00000440 63 6b 25 3f 70 74 72 25 3d 47 6f 25 0d 02 4e 1f |ck%?ptr%=Go%..N.| 00000450 70 74 72 25 2d 3d 31 3a 20 73 74 61 63 6b 25 3f |ptr%-=1: stack%?| 00000460 70 74 72 25 3d 52 69 67 68 74 25 0d 02 58 1c 70 |ptr%=Right%..X.p| 00000470 74 72 25 2d 3d 31 3a 20 73 74 61 63 6b 25 3f 70 |tr%-=1: stack%?p| 00000480 74 72 25 3d 47 6f 25 0d 02 62 16 c8 95 20 70 74 |tr%=Go%..b... pt| 00000490 72 25 3c 73 74 61 63 6b 73 69 7a 65 25 0d 02 6c |r%<stacksize%..l| 000004a0 17 20 20 20 c8 8e 20 73 74 61 63 6b 25 3f 70 74 |. .. stack%?pt| 000004b0 72 25 20 ca 0d 02 76 0c 20 20 20 c9 20 47 6f 25 |r% ...v. . Go%| 000004c0 0d 02 80 16 20 20 20 20 20 20 e7 20 6c 65 76 65 |.... . leve| 000004d0 6c 25 3d 30 20 8c 0d 02 8a 18 20 20 20 20 20 20 |l%=0 ..... | 000004e0 20 20 20 f2 74 67 6f 28 73 74 65 70 25 29 0d 02 | .tgo(step%)..| 000004f0 94 0b 20 20 20 20 20 20 cc 0d 02 9e 24 20 20 20 |.. ....$ | 00000500 20 20 20 20 20 20 e7 20 70 74 72 25 3c 31 32 20 | . ptr%<12 | 00000510 8c 20 f2 53 74 61 63 6b 45 72 72 6f 72 0d 02 a8 |. .StackError...| 00000520 25 20 20 20 20 20 20 20 20 20 73 74 61 63 6b 25 |% stack%| 00000530 3f 70 74 72 25 3d 55 70 25 3a 20 70 74 72 25 2d |?ptr%=Up%: ptr%-| 00000540 3d 31 0d 02 b2 25 20 20 20 20 20 20 20 20 20 73 |=1...% s| 00000550 74 61 63 6b 25 3f 70 74 72 25 3d 47 6f 25 3a 20 |tack%?ptr%=Go%: | 00000560 70 74 72 25 2d 3d 31 0d 02 bc 25 20 20 20 20 20 |ptr%-=1...% | 00000570 20 20 20 20 73 74 61 63 6b 25 3f 70 74 72 25 3d | stack%?ptr%=| 00000580 47 6f 25 3a 20 70 74 72 25 2d 3d 31 0d 02 c6 28 |Go%: ptr%-=1...(| 00000590 20 20 20 20 20 20 20 20 20 73 74 61 63 6b 25 3f | stack%?| 000005a0 70 74 72 25 3d 52 69 67 68 74 25 3a 20 70 74 72 |ptr%=Right%: ptr| 000005b0 25 2d 3d 31 0d 02 d0 25 20 20 20 20 20 20 20 20 |%-=1...% | 000005c0 20 73 74 61 63 6b 25 3f 70 74 72 25 3d 47 6f 25 | stack%?ptr%=Go%| 000005d0 3a 20 70 74 72 25 2d 3d 31 0d 02 da 28 20 20 20 |: ptr%-=1...( | 000005e0 20 20 20 20 20 20 73 74 61 63 6b 25 3f 70 74 72 | stack%?ptr| 000005f0 25 3d 52 69 67 68 74 25 3a 20 70 74 72 25 2d 3d |%=Right%: ptr%-=| 00000600 31 0d 02 e4 25 20 20 20 20 20 20 20 20 20 73 74 |1...% st| 00000610 61 63 6b 25 3f 70 74 72 25 3d 47 6f 25 3a 20 70 |ack%?ptr%=Go%: p| 00000620 74 72 25 2d 3d 31 0d 02 ee 28 20 20 20 20 20 20 |tr%-=1...( | 00000630 20 20 20 73 74 61 63 6b 25 3f 70 74 72 25 3d 52 | stack%?ptr%=R| 00000640 69 67 68 74 25 3a 20 70 74 72 25 2d 3d 31 0d 02 |ight%: ptr%-=1..| 00000650 f8 25 20 20 20 20 20 20 20 20 20 73 74 61 63 6b |.% stack| 00000660 25 3f 70 74 72 25 3d 47 6f 25 3a 20 70 74 72 25 |%?ptr%=Go%: ptr%| 00000670 2d 3d 31 0d 03 02 28 20 20 20 20 20 20 20 20 20 |-=1...( | 00000680 73 74 61 63 6b 25 3f 70 74 72 25 3d 52 69 67 68 |stack%?ptr%=Righ| 00000690 74 25 3a 20 70 74 72 25 2d 3d 31 0d 03 0c 25 20 |t%: ptr%-=1...% | 000006a0 20 20 20 20 20 20 20 20 73 74 61 63 6b 25 3f 70 | stack%?p| 000006b0 74 72 25 3d 47 6f 25 3a 20 70 74 72 25 2d 3d 31 |tr%=Go%: ptr%-=1| 000006c0 0d 03 16 25 20 20 20 20 20 20 20 20 20 73 74 61 |...% sta| 000006d0 63 6b 25 3f 70 74 72 25 3d 47 6f 25 3a 20 70 74 |ck%?ptr%=Go%: pt| 000006e0 72 25 2d 3d 31 0d 03 20 27 20 20 20 20 20 20 20 |r%-=1.. ' | 000006f0 20 20 73 74 61 63 6b 25 3f 70 74 72 25 3d 44 6f | stack%?ptr%=Do| 00000700 77 6e 25 3a 20 70 74 72 25 2d 3d 31 0d 03 2a 0b |wn%: ptr%-=1..*.| 00000710 20 20 20 20 20 20 cd 0d 03 34 0f 20 20 20 c9 20 | ...4. . | 00000720 52 69 67 68 74 25 0d 03 3e 17 20 20 20 20 20 20 |Right%..>. | 00000730 f2 74 74 75 72 6e 28 61 6e 67 6c 65 29 0d 03 48 |.tturn(angle)..H| 00000740 0e 20 20 20 c9 20 4c 65 66 74 25 0d 03 52 18 20 |. . Left%..R. | 00000750 20 20 20 20 20 f2 74 74 75 72 6e 28 2d 61 6e 67 | .tturn(-ang| 00000760 6c 65 29 0d 03 5c 0e 20 20 20 c9 20 50 75 73 68 |le)..\. . Push| 00000770 25 0d 03 66 12 20 20 20 20 20 20 f2 74 72 65 63 |%..f. .trec| 00000780 6f 72 64 0d 03 70 0d 20 20 20 c9 20 50 6f 70 25 |ord..p. . Pop%| 00000790 0d 03 7a 13 20 20 20 20 20 20 f2 74 72 65 73 74 |..z. .trest| 000007a0 6f 72 65 0d 03 84 0e 20 20 20 c9 20 44 6f 77 6e |ore.... . Down| 000007b0 25 0d 03 8e 13 20 20 20 20 20 20 6c 65 76 65 6c |%.... level| 000007c0 25 2d 3d 31 0d 03 ac 0c 20 20 20 c9 20 55 70 25 |%-=1.... . Up%| 000007d0 0d 03 b6 13 20 20 20 20 20 20 6c 65 76 65 6c 25 |.... level%| 000007e0 2b 3d 31 0d 03 d4 08 20 20 20 cb 0d 03 de 0e 20 |+=1.... ..... | 000007f0 20 20 70 74 72 25 2b 3d 31 0d 03 e8 05 ce 0d 03 | ptr%+=1.......| 00000800 f2 05 e1 0d 03 fc 04 0d 04 06 10 dd f2 53 74 61 |.............Sta| 00000810 63 6b 45 72 72 6f 72 0d 04 10 39 85 20 32 35 35 |ckError...9. 255| 00000820 2c 22 4f 75 74 20 6f 66 20 77 6f 72 6b 69 6e 67 |,"Out of working| 00000830 20 73 74 61 63 6b 2e 20 49 6e 63 72 65 61 73 65 | stack. Increase| 00000840 20 57 6f 72 6b 53 74 61 63 6b 53 69 7a 65 25 22 | WorkStackSize%"| 00000850 0d 04 1a 05 e0 0d 04 24 05 e1 0d ff |.......$....| 0000085c