{{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 ====
   BITMAP ENABLE(16)
   
   CLS
   
   level1 := LOAD TILEMAP("/usr/src/mine-rails/resources/level1.tmx")
   
   tileset := TILESET(level1)
   
   POSITIVE CONST startX = 1
   POSITIVE CONST startY = 1
   POSITIVE CONST tileWidth = TILE WIDTH( tileset )
   POSITIVE CONST tileHeight = TILE HEIGHT( tileset )
   POSITIVE CONST screenWidthInTiles = SCREEN WIDTH / tileWidth 
   POSITIVE CONST screenHeightInTiles = SCREEN HEIGHT / tileHeight
   POSITIVE CONST maxPageX = ( ( TILEMAP WIDTH( level1 ) - 1 ) / screenWidthInTiles ) + 1
   POSITIVE CONST maxPageY = ( ( TILEMAP HEIGHT( level1 ) - 1 ) / screenHeightInTiles ) + 1
   
   DIM actualPageX AS SIGNED BYTE
   DIM actualPageY AS SIGNED BYTE
   DIM previousPageX AS SIGNED BYTE = -1
   DIM previousPageY AS SIGNED BYTE = -1
   
   GLOBAL level1
   GLOBAL actualPageX, actualPageY
   GLOBAL previousPageX, previousPageY
   
   PROCEDURE drawMap
   
   	IF ( previousPageX <> actualPageX ) OR ( previousPageY <> actualPageY ) THEN
   		PUT TILEMAP level1 FROM actualPageX * screenWidthInTiles, actualPageY * screenHeightInTiles
   		previousPageX = actualPageX
   		previousPageY = actualPageY
   	ENDIF
   
   END PROC
   
   PROCEDURE readMovement
   
   	right = JRIGHT(0) OR KEY PRESSED( KEY S )
   	left = JLEFT(0) OR KEY PRESSED( KEY A )
   	up = JUP(0) OR KEY PRESSED( KEY W )
   	down = JDOWN(0) OR KEY PRESSED( KEY Z )
   
   	IF right AND ( (actualPageX+1) < maxPageX ) THEN
   		INC actualPageX
   	ELSE IF left AND ( (actualPageX-1) >= 0 ) THEN
   		DEC actualPageX
   	ELSE IF down AND  ( (actualPageY+1) < maxPageY )  THEN
   		INC actualPageY
   	ELSE IF up AND ( (actualPageY-1) >= 0 ) THEN
   		DEC actualPageY
   	ENDIF
   
   END PROC
   
   DO
   
   	drawMap[]
   
   	readMovement[]
   	
   LOOP
   
   
   


==== SOURCE FILE ====
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/main_008.bas|main_008.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 main_008.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atari.exe main_008.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 main_008.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atarixl.exe main_008.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 main_008.bas -o example.prg
   x64sc example.prg
   
   # Windows 
   ugbc.c64.exe main_008.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 main_008.bas -o example.prg
   yape example.prg
   
   # Windows 
   ugbc.plus4.exe main_008.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 main_008.bas -o example.prg
   xplus4 example.prg
   
   # Windows 
   ugbc.plus4.exe main_008.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 main_008.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d32.exe main_008.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 main_008.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d64.exe main_008.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 main_008.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe main_008.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 main_008.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe main_008.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 main_008.bas -o example.prg
   xvic --memory 24k example.prg
   
   # Windows 
   ugbc.vic20.exe main_008.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 main_008.bas -o example.tap
   Speccy example.tap
   
   # Windows 
   ugbc.zx.exe main_008.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 main_008.bas -o example.rom
   openmsx -cart example.rom
   
   # Windows 
   ugbc.msx1.exe main_008.bas -o example.rom
   openmsx -cart example.rom
== blueMSX ==
   # Linux 
   ugbc.msx1 main_008.bas -o example.rom
   bluemsx example.rom
   
   # Windows 
   ugbc.msx1.exe main_008.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 main_008.bas -o example.rom
   openmsx -machine \"COL - ColecoVision\" -cart example.rom
   
   # Windows 
   ugbc.coleco.exe main_008.bas -o example.rom
   bluemsx -machine \"COL - ColecoVision\" example.rom
== blueMSX ==
   # Linux 
   ugbc.coleco main_008.bas -o example.rom
   bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
   
   # Windows 
   ugbc.coleco.exe main_008.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 main_008.bas -o example.rom
   bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
   
   # Windows 
   ugbc.sc3000.exe main_008.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 main_008.bas -o example.rom
   bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
   
   # Windows 
   ugbc.sg1000.exe main_008.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 |}}]]