{{htmlmetatags>metatag-robots=()
metatag-title=(  | 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=(  | ugBASIC User Manual) 
metatag-og:description=(An isomorphic language for retrocomputers)
}}

====== ugBASIC User Manual ======

=====   =====

==== PURPOSE ====


==== SOURCE CODE ====
   Bm En(16):C#a0=4:C# a1 = 2:
   C# a2 = Sc Hg / 16
   C# a3 = ( Sc Hg - 16 )
   C# a4 = ( Sc Wd - 16 )
   C# a5 = (Sc Wd / a0)
   Di x(a0), y(a0), dx(a0), dy(a0), d(a0), m(a0)
   Gb x, y, f, dx, dy, d, m
   Gb a6, a7, a8, b9
   
   a6 = 16*8
   a7 = 16*2+6
   
   Gb b0, b1, bgb0
   Gb b3, bgb3
   
   Prcd b5
   
   	bgb0 := Nw Ims(a0,16,10)
   	bgb3 := Nw Im(8,10)
   	
   	Cl Bl
   	Ik GREY
   	Br 0,0 To 15,3
   	Ik Bu
   	Dr"L16R2U3L2R16L2D3L4U3L3D3"
   	b1 := Nw Im(16,4)
   	Ge Im b1 Fm 0, 0
   
   	Cl 
   	Ik GREY
   	Br 2,2 To 6,9
   	Ik Bu
   	Dr"BL1U8L1D8"
   	b3 := Nw Im(8,10)
   	Ge Im b3 Fm 0, 0
   
   	Cl
   	Ik Re
   	Ci 4,4,4
   	P#(4,4)
   	Ik Wht
   	Dr"BU2L1D1L1D1"
   	b0 := Nw Im(16,10)
   	Ge Im b0 Fm 0, 0
   	
   	Cl
   
   	i = 0
   	ty = 3
   	Rpt
   		tx = (i * a5) + a1
   		x(i) = tx
   		y(i) = ty
   		dx(i) = a1
   		dy(i) = 0
   		Ge Im bgb0 Fr i Fm tx, ty
   		INC i
   	Un i = a0
   	Fil d Wi 1
   	Fil m Wi 0
   	
   Ee Prcd
   
   Gb bx, by
   
   Prcd b6
   	bx = 0
   	i = 0: j = RND(255)
   	Rpt
   		If (j An 1) = 0 Th
   			Pu Im b1 At bx, by
   		Ei
   		j = j \ 2
   		Ad bx, 16
   		INC i
   	Un bx > a4
   Ee Prcd
   
   Prcd b6s
   	by = 16
   	Rpt
   		b6[]
   		Ad by, 16
   	Un by > a3
   Ee Prcd
   
   Pr Prcd c8
   	Rpt
   		Wt Wh [d]
   		[m] = 1
   		If Pt([x]+3,[y]+9) = Bl Th
   			[dy] = a1
   			[dx] = 0
   		El
   			[dy] = 0
   			If [dx] = 0 Th
   				If RND(100) > 50 Th
   					[dx] = a1
   				El
   					[dx] = -a1
   				Ei
   			Ei
   			If [x] >= a4 Th
   				[dx] = -[dx]
   			Eif [x] < a1 Th
   				[dx] = -[dx]
   			Eif Pt([x]+9,[y]+4) <> Bl Th
   				[dx] = -[dx]
   			El If Pt([x]-3,[y]+4) <> Bl Th
   				[dx] = -[dx]
   			Ei
   		Ei
   		[m] = 0
   		[d] = 1
   	Un [y] > Sc Hg	
   Ee Prcd
   
   Pr Prcd c9
   
   	Do
   		c0 = 0
   		i = a0-1
   		Rpt
   			If c0 < y(i) Th
   				c0 = y(i) + 15
   			Ei
   			DEC i
   		Un i < 0
   		Wh Rst Ln < c0
   		We
   		FORBID
   		If a6 <> a8 OR a7 <> b9 Th
   			Pu Im bgb3 At a8, b9
   			Ge Im bgb3 Fm a6, a7
   			Pu Im b3 At a6, a7 Wi Trs
   			a8 = a6: b9 = a7
   		Ei
   		i = a0-1:
   		Rpt
   			d(i) = 1
   			Pu Im bgb0 Fr i At x(i),y(i)
   			DEC i
   		Un i < 0
   		i = 0:
   		Rpt
   			Ad x(i), dx(i)
   			Ad y(i), dy(i)
   			Ge Im bgb0 Fr i Fm x(i),y(i)
   			Pu Im b0 At x(i), y(i) Wi Trs
   			INC i
   		Un i = a0
   		Fil d Wi 0
   		ALLOW
   	Lp
   	
   Ee Prcd
   
   'Pr Prcd c1
   '
   '	Do
   '		Wh c2: DEC c2: We
   '		If Ju(0) An a7 > 0 An Pt(a6 + 4, a7 - 16) = Bl Th
   '			Ad a7, -16
   '			c2 = 10
   '		Ei
   '		If Jd(0) An a7 < a3 An Pt(a6 + 4, a7 + 16) = Bl Th
   '			Ad a7, 16
   '			c2 = 10
   '		Ei
   '		If Jl(0) An a6 > 16 An Pt(a6 - a1, a7) = Bl Th
   '			Ad a6, -a1
   '			c2 = 10
   '		Ei
   '		If Jr(0) An a6 < a3 An Pt(a6 + 8 + a1, a7) = Bl Th
   '			Ad a6, a1
   '			c2 = 10
   '		Ei
   '	Lp
   '		
   'Ee Prb
   
   b5[]
   b6s[]
   
   Fo k=0 To a0-1
   	Sw c8
   Nx k
   Sw c9
   'Sw c1
   
   
    ' balls -> a0
    ' step -> a1
    ' levels -> a2
    ' screenLimitH -> a3
    ' screenLimitW -> a4
    ' ballStep -> a5
    ' plx -> a6
    ' ply -> a7
    ' pvx -> a8
    ' pvy -> b9
    ' ball -> b0
    ' bar -> b1
    ' bgball -> b2
    ' paddle -> b3
    ' bgpaddle -> b4
    ' prepareGraphics -> b5
    ' drawBarrier -> b6
    ' drawBarriers -> b7
    ' moveBall -> c8
    ' drawBallsAndPaddle -> c9
    ' maxy -> c0
    ' movePlayer -> c1
    ' pdelay -> c2
   
   


==== SOURCE FILE ====
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/x.bas|x.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 x.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atari.exe x.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 x.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atarixl.exe x.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 x.bas -o example.prg
   x64sc example.prg
   
   # Windows 
   ugbc.c64.exe x.bas -o example.prg
   x64sc 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 x.bas -o example.prg
   yape example.prg
   
   # Windows 
   ugbc.plus4.exe x.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 x.bas -o example.prg
   xplus4 example.prg
   
   # Windows 
   ugbc.plus4.exe x.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 x.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d32.exe x.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 x.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d64.exe x.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 x.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe x.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 x.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe x.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 x.bas -o example.prg
   xvic --memory 24k example.prg
   
   # Windows 
   ugbc.vic20.exe x.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 x.bas -o example.tap
   Speccy example.tap
   
   # Windows 
   ugbc.zx.exe x.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 x.bas -o example.rom
   openmsx -cart example.rom
   
   # Windows 
   ugbc.msx1.exe x.bas -o example.rom
   openmsx -cart example.rom
== blueMSX ==
   # Linux 
   ugbc.msx1 x.bas -o example.rom
   bluemsx example.rom
   
   # Windows 
   ugbc.msx1.exe x.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 x.bas -o example.rom
   openmsx -machine \"COL - ColecoVision\" -cart example.rom
   
   # Windows 
   ugbc.coleco.exe x.bas -o example.rom
   bluemsx -machine \"COL - ColecoVision\" example.rom
== blueMSX ==
   # Linux 
   ugbc.coleco x.bas -o example.rom
   bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
   
   # Windows 
   ugbc.coleco.exe x.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 x.bas -o example.rom
   bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
   
   # Windows 
   ugbc.sc3000.exe x.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 x.bas -o example.rom
   bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
   
   # Windows 
   ugbc.sg1000.exe x.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  |open an issue]] for this example on GitHub. Thank you!===== POWERED BY =====

[[:ugbasic:user:examples|{{ :ugbasic:user:logo-ugbasic.png?nolink&600 |}}]]