{{htmlmetatags>metatag-robots=()
metatag-title=(LET'S MOVE THE WAGON | 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=(LET'S MOVE THE WAGON | ugBASIC User Manual) 
metatag-og:description=(An isomorphic language for retrocomputers)
}}

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

===== LET'S MOVE THE WAGON =====

==== PURPOSE ====
 Follow the course at https://www.facebook.com/groups/867151224158600  SPOSTARE IL CARRELLO  Segui il corso su at https://www.facebook.com/groups/867151224158600  DÉPLACER LE PANIER  Suivez le cours sur https://www.facebook.com/groups/867151224158600 

==== SOURCE CODE ====
   
   BITMAP ENABLE(16)
   
   POSITIVE CONST startX = 1
   POSITIVE CONST startY = 1
   POSITIVE CONST wagonSpeed = 4
   POSITIVE CONST wagonSpeedX = ( wagonSpeed * SCREEN SPRITE RATIO X ) / 100
   POSITIVE CONST wagonSpeedY = ( wagonSpeed * SCREEN SPRITE RATIO Y ) / 100
   
   wagonImage := LOAD IMAGE( "/usr/src/mine-rails/resources/wagon.png")
   
   POSITIVE CONST wagonImageWidth = IMAGE WIDTH( wagonImage )
   POSITIVE CONST wagonImageHeight = IMAGE HEIGHT( wagonImage )
   
   POSITIVE CONST minWagonX = SCREEN BORDER X
   POSITIVE CONST minWagonY = SCREEN BORDER Y
   POSITIVE CONST screenWidthInWagonCoords = ( SCREEN WIDTH * SCREEN SPRITE RATIO X ) / 100
   POSITIVE CONST screenHeightInWagonCoords = ( SCREEN HEIGHT * SCREEN SPRITE RATIO Y ) / 100
   POSITIVE CONST maxWagonX = SCREEN BORDER X + screenWidthInWagonCoords - wagonImageWidth
   POSITIVE CONST maxWagonY = SCREEN BORDER Y + screenHeightInWagonCoords - wagonImageHeight
   
   DIM x AS POSITION = minWagonX
   DIM y AS POSITION = minWagonY
   DIM px AS POSITION = -1
   DIM py AS POSITION = -1
   DIM dx AS POSITION = 0
   DIM dy AS POSITION = 0
   
   wagon = CSPRITE( wagonImage )
   
   PROCEDURE prepareBitmaps ON CPC, ATARI, ATARIXL, C128Z, COCO, DRAGON, MO5, PC128OP, ZX
   
   	SHARED wagonImage
   	SHARED wagonBackground
   	
   	wagonBackground := NEW IMAGE( wagonImageWidth, wagonImageHeight )
   	PUT IMAGE wagonImage AT 0, 0
   	GET IMAGE wagonBackground FROM 0, 0
   	CLS BLACK
   	
   END PROC
   
   PROCEDURE readWagonMovement
   
   	SHARED x, y, dx, dy
   
   	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 (dx = 0) AND (dy = 0) THEN
   		IF right AND ( x < maxWagonX ) THEN
   			dx = wagonSpeedX
   		ELSE IF left AND ( x > minWagonX ) THEN
   			dx = -wagonSpeedX
   		ELSE IF down AND ( y < maxWagonY ) THEN
   			dy = wagonSpeedY
   		ELSE IF up AND ( y > minWagonY ) THEN
   			dy = -wagonSpeedY
   		ENDIF
   	ENDIF
   				
   END PROC
   
   PROCEDURE drawWagonSprite ON C64, C128, COLECO, MSX, SC3000, SG1000
   	
   	SHARED x, y
   	SHARED wagon
   
   	SPRITE wagon ENABLE AT x, y
   	
   END PROC
   
   PROCEDURE drawWagonBitmap ON CPC, ATARI, ATARIXL, C128Z, COCO, DRAGON, MO5, PC128OP, ZX
   	
   	SHARED x, y
   	SHARED px, py
   	SHARED wagonImage
   	
   	IF ( px <> x ) OR ( py <> y ) THEN
   		IF (px<>-1) AND (py<>-1) THEN
   			PUT IMAGE wagonBackground AT px, py
   		ENDIF
   		GET IMAGE wagonBackground FROM x, y
   		PUT IMAGE wagonImage AT x,y WITH TRANSPARENCY
   		px = x
   		py = y
   	ENDIF		
   
   END PROC
   
   DIM k AS BYTE
   
   PROCEDURE drawWagon
   	
   	SHARED x, y, dx, dy
   	SHARED wagon
   	SHARED k
   	
   	ADD x, dx
   	IF x < minWagonX THEN
   		x = minWagonX
   	ENDIF
   	IF x > maxWagonX THEN
   		x = maxWagonX
   	ENDIF
   	
   	ADD y, dy
   	IF y < minWagonY THEN
   		y = minWagonY
   	ENDIF
   	IF y > maxWagonY THEN
   		y = maxWagonY
   	ENDIF
   	
   	drawWagonSprite[] ON C64, C128, COLECO, MSX, SC3000, SG1000
   	drawWagonBitmap[] ON CPC, ATARI, ATARIXL, C128Z, COCO, DRAGON, MO5, PC128OP, ZX
   	
   	dx = 0
   	dy = 0
   	
   END PROC
   
   PROCEDURE drawWagonTimed ON C128Z
   
   	DIM t AS WORD
   	
   	IF ( TIMER - t ) > 5 THEN
   		drawWagon[]
   		t = TIMER
   	ENDIF
   
   END PROC
   
   prepareBitmaps[] ON CPC, ATARI, ATARIXL, C128Z, COCO, DRAGON, MO5, PC128OP, ZX
   
   EVERY 5 TICKS CALL drawWagon ON C64, C128, CPC, ATARI, ATARIXL, COCO, COLECO, DRAGON, MO5, MSX, PC128OP, SC3000, SG1000, ZX
   
   CLS
   
   EVERY ON
   
   DO
   	
   	readWagonMovement[]
   	
   	drawWagonTimed[] ON C128Z
   		
   LOOP
   
   
   


==== SOURCE FILE ====
  * ''[[https://github.com/spotlessmind1975/ugbasic/tree/main/examples/main_014.bas|main_014.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_014.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atari.exe main_014.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_014.bas -o example.xex
   altirra example.xex
   
   # Windows 
   ugbc.atarixl.exe main_014.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_014.bas -o example.prg
   x64sc example.prg
   
   # Windows 
   ugbc.c64.exe main_014.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_014.bas -o example.prg
   yape example.prg
   
   # Windows 
   ugbc.plus4.exe main_014.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_014.bas -o example.prg
   xplus4 example.prg
   
   # Windows 
   ugbc.plus4.exe main_014.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_014.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d32.exe main_014.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_014.bas -o example.bin
   xroar -rompath (your rom path) example.bin
   
   # Windows 
   ugbc.d64.exe main_014.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_014.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe main_014.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_014.bas -o example.k7
   dcmoto
   (choose BASIC 128)
   CLEAR,&H2FFF: LOADM"CASS:",R: EXEC
   
   # Windows 
   ugbc.pc128op.exe main_014.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_014.bas -o example.prg
   xvic --memory 24k example.prg
   
   # Windows 
   ugbc.vic20.exe main_014.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_014.bas -o example.tap
   Speccy example.tap
   
   # Windows 
   ugbc.zx.exe main_014.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_014.bas -o example.rom
   openmsx -cart example.rom
   
   # Windows 
   ugbc.msx1.exe main_014.bas -o example.rom
   openmsx -cart example.rom
== blueMSX ==
   # Linux 
   ugbc.msx1 main_014.bas -o example.rom
   bluemsx example.rom
   
   # Windows 
   ugbc.msx1.exe main_014.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_014.bas -o example.rom
   openmsx -machine \"COL - ColecoVision\" -cart example.rom
   
   # Windows 
   ugbc.coleco.exe main_014.bas -o example.rom
   bluemsx -machine \"COL - ColecoVision\" example.rom
== blueMSX ==
   # Linux 
   ugbc.coleco main_014.bas -o example.rom
   bluemsx /machine \"COL - ColecoVision\" /rom1 example.rom
   
   # Windows 
   ugbc.coleco.exe main_014.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_014.bas -o example.rom
   bluemsx /machine \"SEGA - SC-3000\" /rom1 example.rom
   
   # Windows 
   ugbc.sc3000.exe main_014.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_014.bas -o example.rom
   bluemsx /machine \"SEGA - SG-1000\" /rom1 example.rom
   
   # Windows 
   ugbc.sg1000.exe main_014.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 LET'S MOVE THE WAGON|open an issue]] for this example on GitHub. Thank you!===== POWERED BY =====

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