{{htmlmetatags>metatag-robots=() metatag-title=(OTHER CONTRIBUTIONS SIERPINSKI CHALLENGE (adapted) | ugBASIC User Manual) metatag-keywords=(ugBASIC,Commodore 64,Commodore PLUS/4,ZX Spectrum) metatag-description=(An isomorphic language for retrocomputers) metatag-media-og:image=(:ugbasic:logo-ugbasic-fb.png) metatag-og:title=(OTHER CONTRIBUTIONS SIERPINSKI CHALLENGE (adapted) | ugBASIC User Manual) metatag-og:description=(An isomorphic language for retrocomputers) }} ====== ugBASIC User Manual ====== ===== OTHER CONTRIBUTIONS SIERPINSKI CHALLENGE (adapted) ===== ==== PURPOSE ==== This example is the adapted version for the "Sierpinski Challenge", an exciting challenge regarding fractals. This example reproduces the famous "SIERPINSKI TRIANGLE" on retrocomputers. It is a very simple fractal to obtain, which takes its name from the mathematician who first studied its properties. Such a triangle can have different shapes and sizes and can be obtained in various ways. One of the methods to create it is the so-called "Game of chaos". The fractal is built by creating iteratively a sequence of points, starting from a random initial point, in which each point of the sequence is a given fraction of the distance between the previous point and one of the vertices of the polygon; the vertex is chosen at random in each iteration. Repeating this iterative process a large number of times, selecting the vertex at random at each iteration, often (but not always) produces a fractal shape. Using a regular triangle and the factor 1/2, it will result in a Sierpinski triangle. ==== SOURCE CODE ==== 10 t=TI: REM POKE 53280,15 20 x1=160: y1=0 30 x2=0: y2=199 40 x3=319: y3=199 50 REM FOR k=0 TO 7999: POKE 40960+k,0: NEXT 55 BITMAP ENABLE(2) 60 REM POKE 53265,59: POKE 53272,24 65 CLS BLACK 70 REM FOR i=0 TO 999: POKE 1024+i,16: NEXT 80 x=x1:y=y1 90 r=RND(3) 100 IF r=0 THEN : x=(x+x1)/2: y=(y+y1)/2 : ENDIF 110 IF r=1 THEN : x=(x+x2)/2: y=(y+y2)/2 : ENDIF 120 IF r=2 THEN : x=(x+x3)/2: y=(y+y3)/2 : ENDIF 145 PLOT x, y, WHITE 150 n=n+1: IF n=3000 THEN : GOTO 170 : ENDIF 160 GOTO 90 170 te=TI-t: LOCATE 0, 22 : PRINT "elapsed time =";(te/60);"sec" 180 PRINT"number of plotted points =";n ==== SOURCE FILE ==== * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/contrib_sierpinski.bas|contrib_sierpinski.bas]]'' ==== HOW TO COMPILE AND RUN ==== The instructions here refer to compiling the example from the command line. For Microsoft Windows users we suggest using **[[https://spotlessmind1975.itch.io/ugbasic-ide|UGBASIC-IDE]]**, which allows you to compile the example with just one click.=== ATARI 400/800 family === In order to compile and run the example, you need to have the Altirra emulator, and in particular that the ''altirra'' executable is accessible. Then, type this command on the command line: # Linux ugbc.atari contrib_sierpinski.bas -o example.xex altirra example.xex # Windows ugbc.atari.exe contrib_sierpinski.bas -o example.xex altirra example.xex === ATARI 600XL/800XL/1200XL/XG(SE) family === In order to compile and run the example, you need to have the Altirra emulator, and in particular that the ''altirra'' executable is accessible. Then, type this command on the command line: # Linux ugbc.atarixl contrib_sierpinski.bas -o example.xex altirra example.xex # Windows ugbc.atarixl.exe contrib_sierpinski.bas -o example.xex altirra example.xex === Commodore 64 === In order to compile and run the example, you need to have the VICE emulator, and in particular that the ''x64sc'' executable is accessible. Then, type this command on the command line: # Linux ugbc.c64 contrib_sierpinski.bas -o example.prg x64sc example.prg # Windows ugbc.c64.exe contrib_sierpinski.bas -o example.prg x64sc example.prg === Commodore 64+REU === In order to compile and run the example, you need to have the VICE emulator, and in particular that the ''x64sc'' executable is accessible. Then, type this command on the command line: # Linux ugbc.c64reu contrib_sierpinski.bas -o example.prg x64sc -reu example.prg # Windows ugbc.c64reu.exe contrib_sierpinski.bas -o example.prg x64sc -reu example.prg === Commodore PLUS/4 === == Using YAPE == In order to run the example, you need to have the YAPE emulator. In particular that the ''yape'' executable is accessible. Then, type this command on the command line: # Linux ugbc.plus4 contrib_sierpinski.bas -o example.prg yape example.prg # Windows ugbc.plus4.exe contrib_sierpinski.bas -o example.prg yape example.prg == Using VICE == In order to run the example, you need to have the VICE emulator. In particular that the ''xplus4'' executable is accessible. Then, type this command on the command line: # Linux ugbc.plus4 contrib_sierpinski.bas -o example.prg xplus4 example.prg # Windows ugbc.plus4.exe contrib_sierpinski.bas -o example.prg xplus4 example.prg === Dragon 32 === In order to compile and run the example, you need to have the XROAR emulator, and in particular that the ''xroar'' executable is accessible. Then, type this command on the command line: # Linux ugbc.d32 contrib_sierpinski.bas -o example.bin xroar -rompath (your rom path) example.bin # Windows ugbc.d32.exe contrib_sierpinski.bas -o example.bin xroar.exe -rompath (your rom path) example.bin === Dragon 64 === In order to compile and run the example, you need to have the XROAR emulator, and in particular that the ''xroar'' executable is accessible. Then, type this command on the command line: # Linux ugbc.d64 contrib_sierpinski.bas -o example.bin xroar -rompath (your rom path) example.bin # Windows ugbc.d64.exe contrib_sierpinski.bas -o example.bin xroar.exe -rompath (your rom path) example.bin === PC128 Olivetti Prodest === In order to compile and run the example, you need to have the DCMOTO emulator, and in particular that the ''dcmoto'' executable is accessible. Then, type this command on the command line and on the emulator: # Linux ugbc.pc128op contrib_sierpinski.bas -o example.k7 dcmoto (choose BASIC 128) CLEAR,&H2FFF: LOADM"CASS:",R: EXEC # Windows ugbc.pc128op.exe contrib_sierpinski.bas -o example.k7 dcmoto (choose example.k7) (choose BASIC 128) CLEAR,&H2FFF: LOADM"CASS:",R: EXEC === Thomson MO5 === In order to compile and run the example, you need to have the DCMOTO emulator, and in particular that the ''dcmoto'' executable is accessible. Then, type this command on the command line and on the emulator: # Linux ugbc.pc128op contrib_sierpinski.bas -o example.k7 dcmoto (choose BASIC 128) CLEAR,&H2FFF: LOADM"CASS:",R: EXEC # Windows ugbc.pc128op.exe contrib_sierpinski.bas -o example.k7 dcmoto (choose example.k7) (choose BASIC 128) CLEAR,&H2FFF: LOADM"CASS:",R: EXEC === Commodore VIC-20 === In order to compile and run the example, you need to have the VICE emulator, and in particular that the ''xvic'' executable is accessible. Then, type this command on the command line: # Linux ugbc.vic20 contrib_sierpinski.bas -o example.prg xvic --memory 24k example.prg # Windows ugbc.vic20.exe contrib_sierpinski.bas -o example.prg xvic --memory 24k example.prg === ZX Spectrum === In order to compile and run the example, you need to have the Speccy emulator, and in particular that the ''speccy'' executable is accessible. Then, type this command on the command line: # Linux ugbc.zx contrib_sierpinski.bas -o example.tap Speccy example.tap # Windows ugbc.zx.exe contrib_sierpinski.bas -o example.tap Speccy example.tap === MSX === In order to compile and run the example, you need to have the openMsx or the BlueMSX emulator, and in particular that its executable is accessible. Then, type this command on the command line: == openMSX == # Linux ugbc.msx1 contrib_sierpinski.bas -o example.rom openmsx -cart example.rom # Windows ugbc.msx1.exe contrib_sierpinski.bas -o example.rom openmsx -cart example.rom == blueMSX == # Linux ugbc.msx1 contrib_sierpinski.bas -o example.rom bluemsx example.rom # Windows ugbc.msx1.exe contrib_sierpinski.bas -o example.rom bluemsx example.rom === ColecoVision === In order to compile and run the example, you need to have the openMsx or the BlueMSX emulator, and in particular that its executable is accessible. Then, type this command on the command line: == openMSX == # Linux ugbc.coleco contrib_sierpinski.bas -o example.rom openmsx -machine \"COL - ColecoVision\" -cart example.rom # Windows ugbc.coleco.exe contrib_sierpinski.bas -o example.rom bluemsx -machine \"COL - ColecoVision\" example.rom == blueMSX == # Linux ugbc.coleco contrib_sierpinski.bas -o example.rom bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom # Windows ugbc.coleco.exe contrib_sierpinski.bas -o example.rom bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom === SEGA SC-3000 === In order to compile and run the example, you need to have the BlueMSX emulator, and in particular that its executable is accessible. Then, type this command on the command line: # Linux ugbc.sc3000 contrib_sierpinski.bas -o example.rom bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom # Windows ugbc.sc3000.exe contrib_sierpinski.bas -o example.rom bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom === SEGA SG-1000 === In order to compile and run the example, you need to have the BlueMSX emulator, and in particular that its executable is accessible. Then, type this command on the command line: # Linux ugbc.sg1000 contrib_sierpinski.bas -o example.rom bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom # Windows ugbc.sg1000.exe contrib_sierpinski.bas -o example.rom bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom ==== ANY PROBLEM? ==== If you have found a problem trying to run this example, if you think there is a bug or, more simply, you would like it to be improved, [[https://github.com/spotlessmind1975/ugbasic/issues/new?title=IMPROVE OTHER CONTRIBUTIONS SIERPINSKI CHALLENGE (adapted)|open an issue]] for this example on GitHub. Thank you!===== POWERED BY ===== [[:ugbasic:user:examples|{{ :ugbasic:user:logo-ugbasic.png?nolink&600 |}}]]