Color in 8 bit backgrounds

[Jeremysr]

Could someone explain to me how 8BitBackground:SetPaletteColor() works? And also what does the "i" mean in 8BitBackground:Plot( x, y, i )?

[Zhen]

8BitBackground is a background in indexed mode or paletted mode. You can create a palette with 256 colours (8 bits) and draw in the background with these colours.

When you draw in 8BitBackground you need to create a palette before plot.

Code:

-- init background
BGBot8Bit = Screen.Load8BitBG()
Screen.Initialize( SCREEN_BOTTOM, BGBot8Bit )

--  create a palette colour for index "i=1"   with "red = 16", "green = 0" and "blue = 0"
BGBot8Bit:SetPaletteColor(  1, 16,  0,  0  ) 

From now index "i = 1" in the palette will be a dark red.

With:

Code:

-- you draw a pixel in x,y position of screen using colour "i" in the palette.
-- BGBot8Bit:Plot( x, y, i )

-- in the example, you draw a dark red pixel at 10,20 position
BGBot8Bit:Plot( 10, 20, 1 ) 

Zhen

[Jeremysr]

Yay thanks for the quick reply! I get it now.

I'm using it for trying some 3D stuff, so far I have a 3D cube that can rotate