ugBASIC User Manual
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ugBASIC User Manual

PURPOSE

SOURCE CODE

 DEFINE STRING SPACE 128
 DEFINE STRING COUNT 16
 
 BITMAP ENABLE(16)
 
 CONST balls = 4
 CONST step = 2
 CONST levels = SCREEN HEIGHT / 16
 CONST screenLimitH = ( SCREEN HEIGHT - 16 )
 CONST screenLimitW = ( SCREEN WIDTH - 16 )
 CONST ballStep = (SCREEN WIDTH / balls)
 
 DIM x(balls), y(balls), dx(balls), dy(balls), d@(balls), m@(balls)
 
 GLOBAL x, y, f, dx, dy, d, m
 
 GLOBAL ball, bar, bgball
 GLOBAL basket
 
 PROCEDURE prepareGraphics
 
 	bgball := NEW IMAGES(balls,16,10)
 	
 	CLS BLACK
 	INK GREY
 	BAR 0,0 TO 15,3
 	INK BLUE
 	DRAW"L16R2U3L2R16L2D3L4U3L3D3"
 	bar := NEW IMAGE(16,4)
 	GET IMAGE bar FROM 0, 0
 
 	CLS 
 	INK GREY
 	BAR 0,0 TO 7,7
 	INK BLUE
 	DRAW"BU8D8L7U8"
 	basket := NEW IMAGE(8,8)
 	GET IMAGE basket FROM 0, 0
 	
 	CLS
 	INK RED
 	CIRCLE 4,4,4
 	PAINT(4,4)
 	INK WHITE
 	DRAW"BU2L1D1L1D1"
 	ball := NEW IMAGE(16,10)
 	GET IMAGE ball FROM 0, 0
 	
 	CLS
 
 	i = 0
 	ty = 16
 	REPEAT
 		tx = (i * ballStep) + step
 		x(i) = tx
 		y(i) = ty
 '		dx(i) = 0
 '		dy(i) = 0
 		GET IMAGE bgball FRAME i FROM tx, ty
 		INC i
 	UNTIL i = balls
 	FILL d WITH 1
 	FILL m WITH 0
 	
 END PROCEDURE
 
 GLOBAL bx, by
 
 PROCEDURE drawBarrier
 	bx = 0
 	i = 0: j = RND(255)
 	REPEAT
 		IF (j AND 1) = 0 THEN
 			PUT IMAGE bar AT bx, by
 		ENDIF
 		j = j \ 2
 		ADD bx, 16
 		INC i
 	UNTIL bx > screenLimitW
 END PROCEDURE
 
 PROCEDURE drawBarriersAndBaskets
 	by = 16
 	REPEAT
 		drawBarrier[]
 		ADD by, 16
 	UNTIL by > screenLimitH - 16
 	bx = 0
 	REPEAT
 		PUT IMAGE basket AT bx, by
 		ADD bx, 16
 	UNTIL bx > screenLimitW
 END PROCEDURE
 
 PARALLEL PROCEDURE moveBall
 	REPEAT
 		WAIT WHILE [d]
 		IF POINT([x]+3,[y]+9) = BLACK THEN
 			[dy] = step
 			[dx] = 0
 		ELSE
 			[dy] = 0
 			IF [dx] = 0 THEN
 				IF RND(100) > 50 THEN
 					[dx] = step
 				ELSE
 					[dx] = -step
 				ENDIF
 			ENDIF
 			IF [x] >= screenLimitW THEN
 				[dx] = -[dx]
 			ELSEIF [x] < step THEN
 				[dx] = -[dx]
 			ELSEIF POINT([x]+9,[y]+4) <> BLACK THEN
 				[dx] = -[dx]
 			ELSE IF POINT([x]-3,[y]+4) <> BLACK THEN
 				[dx] = -[dx]
 			ENDIF
 		ENDIF
 		[m] = 1
 		[d] = 1
 	UNTIL [y] > SCREEN HEIGHT	
 END PROCEDURE
 
 PROCEDURE waitRaster
 
 		maxy = 0
 		i = balls-1
 		REPEAT
 			NOP
 			WAIT WHILE m(i)
 			NOP
 			IF maxy < y(i) THEN
 				maxy = y(i) + 15
 			ENDIF
 			DEC i
 		UNTIL i < 0
 		IF maxy > 0 THEN
 			WHILE RASTER LINE < maxy
 			WEND
 		ENDIF
 			
 END PROC
 
 PARALLEL PROCEDURE drawBalls
 
 	DO
 		waitRaster[]
 		FORBID
 		i = balls-1:
 		REPEAT
 			d(i) = 1
 			PUT IMAGE bgball FRAME i AT x(i),y(i)
 			DEC i
 		UNTIL i < 0
 		i = 0:
 		REPEAT
 			ADD x(i), dx(i)
 			ADD y(i), dy(i)
 			GET IMAGE bgball FRAME i FROM x(i),y(i)
 			IF dx(i) <> 0 AND dy(0) <> 0 THEN
 				PUT IMAGE ball AT x(i), y(i) WITH TRANSPARENCY
 			ENDIF
 			INC i
 		UNTIL i = balls
 		FILL d WITH 0
 		ALLOW
 	LOOP
 	
 END PROCEDURE
 
 'PARALLEL PROCEDURE movePlayer
 '
 '	DO
 '		WHILE pdelay: DEC pdelay: WEND
 '		IF JUP(0) AND ply > 0 AND POINT(plx + 4, ply - 16) = BLACK THEN
 '			ADD ply, -16
 '			pdelay = 10
 '		ENDIF
 '		IF JDOWN(0) AND ply < screenLimitH AND POINT(plx + 4, ply + 16) = BLACK THEN
 '			ADD ply, 16
 '			pdelay = 10
 '		ENDIF
 '		IF JLEFT(0) AND plx > 16 AND POINT(plx - step, ply) = BLACK THEN
 '			ADD plx, -step
 '			pdelay = 10
 '		ENDIF
 '		IF JRIGHT(0) AND plx < screenLimitH AND POINT(plx + 8 + step, ply) = BLACK THEN
 '			ADD plx, step
 '			pdelay = 10
 '		ENDIF
 '	LOOP
 '		
 'END PROC
 
 prepareGraphics[]
 drawBarriersAndBaskets[]
 
 SPAWN drawBalls
 
 'SPAWN movePlayer

SOURCE FILE

contrib_game_old.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 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_game_old.bas -o example.xex
 altirra example.xex
 
 # Windows 
 ugbc.atari.exe contrib_game_old.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_game_old.bas -o example.xex
 altirra example.xex
 
 # Windows 
 ugbc.atarixl.exe contrib_game_old.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_game_old.bas -o example.prg
 x64sc example.prg
 
 # Windows 
 ugbc.c64.exe contrib_game_old.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 contrib_game_old.bas -o example.prg
 yape example.prg
 
 # Windows 
 ugbc.plus4.exe contrib_game_old.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_game_old.bas -o example.prg
 xplus4 example.prg
 
 # Windows 
 ugbc.plus4.exe contrib_game_old.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_game_old.bas -o example.bin
 xroar -rompath (your rom path) example.bin
 
 # Windows 
 ugbc.d32.exe contrib_game_old.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_game_old.bas -o example.bin
 xroar -rompath (your rom path) example.bin
 
 # Windows 
 ugbc.d64.exe contrib_game_old.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_game_old.bas -o example.k7
 dcmoto
 (choose BASIC 128)
 CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
 
 # Windows 
 ugbc.pc128op.exe contrib_game_old.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_game_old.bas -o example.k7
 dcmoto
 (choose BASIC 128)
 CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
 
 # Windows 
 ugbc.pc128op.exe contrib_game_old.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_game_old.bas -o example.prg
 xvic --memory 24k example.prg
 
 # Windows 
 ugbc.vic20.exe contrib_game_old.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_game_old.bas -o example.tap
 Speccy example.tap
 
 # Windows 
 ugbc.zx.exe contrib_game_old.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_game_old.bas -o example.rom
 openmsx -cart example.rom
 
 # Windows 
 ugbc.msx1.exe contrib_game_old.bas -o example.rom
 openmsx -cart example.rom

blueMSX

 # Linux 
 ugbc.msx1 contrib_game_old.bas -o example.rom
 bluemsx example.rom
 
 # Windows 
 ugbc.msx1.exe contrib_game_old.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_game_old.bas -o example.rom
 openmsx -machine \"COL - ColecoVision\" -cart example.rom
 
 # Windows 
 ugbc.coleco.exe contrib_game_old.bas -o example.rom
 bluemsx -machine \"COL - ColecoVision\" example.rom

blueMSX

 # Linux 
 ugbc.coleco contrib_game_old.bas -o example.rom
 bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
 
 # Windows 
 ugbc.coleco.exe contrib_game_old.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_game_old.bas -o example.rom
 bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
 
 # Windows 
 ugbc.sc3000.exe contrib_game_old.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_game_old.bas -o example.rom
 bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
 
 # Windows 
 ugbc.sg1000.exe contrib_game_old.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, open an issue for this example on GitHub. Thank you!

Table of Contents

ugBASIC User Manual

PURPOSE

SOURCE CODE

SOURCE FILE

HOW TO COMPILE AND RUN

ATARI 400/800 family

ATARI 600XL/800XL/1200XL/XG(SE) family

Commodore 64

Commodore PLUS/4

Using YAPE

Using VICE

Dragon 32

Dragon 64

PC128 Olivetti Prodest

Thomson MO5

Commodore VIC-20

ZX Spectrum

MSX

openMSX

blueMSX

ColecoVision

openMSX

blueMSX

SEGA SC-3000

SEGA SG-1000

ANY PROBLEM?

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