SPRITE MANAGEMENT: MULTIPLEXING A BIG SPRITE

This example shows how to handle a large sprite on a system that supports sprite multiplexing. It also uses some constructs to automatically calculate the position of the sprites.

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SOURCE CODE ()

	OPTION EXPLICIT
	
	DEFINE IMAGE FREE HEIGHT
	DEFINE MSPRITE ASYNC
	
	BITMAP ENABLE
	
	COLOR BORDER GREEN
	
	DIM forestImage AS IMAGE

	DIM dragonBirdImage AS IMAGE
	DIM dragonBirdSprite AS MSPRITE
	DIM dragonBirdMove AS PATH
	DIM dragonBirdLeftMove AS PATH
	DIM dragonBirdRightMove AS PATH
	DIM dragonBirdX AS POSITION, dragonBirdY AS POSITION

	forestImage := LOAD IMAGE("forest.png")		

	dragonBirdLeftMove = CREATE PATH( 300, 52 TO 0, 52 )
	dragonBirdMove = dragonBirdRightMove
	dragonBirdImage := LOAD IMAGE("dragonbird.png")		
	dragonBirdSprite = MSPRITE(dragonBirdImage IGNORE COLOR LIGHT RED)
	
	CLS

	PUT IMAGE forestImage AT 0, 0

	DO
		TRAVEL dragonBirdMove TO dragonBirdX, dragonBirdY 
		SPRITE dragonBirdSprite AT dragonBirdX, dragonBirdY
		IF dragonBirdX = 0 THEN
			dragonBirdMove = dragonBirdLeftMove
		ENDIF
		MSPRITE UPDATE
	LOOP

How to compile and run the example

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 download and compile each single example with just one click.

Are instructions for your specific home computer / console missing? First of all, check if your computer is supported by clicking here. If so, since ugBASIC is a language which does not provide abstractions, it is possible that this example will not work on your target. If you think this is an issue, please click here.

Commodore 128 (CPU 8502)

In order to compile the example, type this command on the command line:

Linux

ugbc.c128 -O prg -o sprites_example_09.prg sprites_example_09.bas

Windows

ugbc.c128.exe -O prg -o sprites_example_09.prg sprites_example_09.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Commodore 64, Commodore Executive 64

In order to compile the example, type this command on the command line:

Linux

ugbc.c64 -O prg -o sprites_example_09.prg sprites_example_09.bas

Windows

ugbc.c64.exe -O prg -o sprites_example_09.prg sprites_example_09.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

Commodore 64 + REU

In order to compile the example, type this command on the command line:

Linux

ugbc.c64reu -O d64 -o sprites_example_09.d64 sprites_example_09.bas

Windows

ugbc.c64reu.exe -O d64 -o sprites_example_09.d64 sprites_example_09.bas

For Microsoft Windows users we suggest using UGBASIC-IDE, which allows you to download and compile this example with just one click.

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!

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