please help me? (again)

[LeightonW87]

Ok, I'm trying to do a scrolling Tile map but the problem I'm having is the emulator quits and I'm guessing I'm doing something bad , oh well.

Could someone have a quick look at the script.

Code:

-- THIS DEFINES THE NAMES OF ARRAYS FOR LATER USE --
--
-- SCREEN ARRAYS --
SCREEN_TOP    = 1
SCREEN_BOTTOM = 0

-- THIS SETS UP THE TWO LAYERS FOR THE TOP SCREEN --
--
BGTile1Top = Screen.LoadTileBG()
BGTile2Top = Screen.LoadTileBG()
Screen.Initialize( SCREEN_TOP, BGTile1Top, BGTile2Top )

-- Create 1st Tile Layer --
BGTopMap = Screen.LoadTileBG()

-- Create 2nd Tile Layer --
BGTopMap = Screen.LoadTileBG()

-- Loads the Background --
BGTopMap:LoadPalette( "Space.bmp.pal" )

-- Loads the Tile data --
BGTopMap:LoadTiles( "Space.raw", 256 )

-- Loads the map data --
BGTopMap:LoadMap( "Space.map", ( 256 / 8 ), ( 192 / 8 ) )

-- Initialize Top screen --
Screen.Initialize( SCREEN_BOTTOM, BGBottomMap )

Tell me if you want me to put the packed NDS file on my site so that you can see what happens.

[LeightonW87]

I kinda fixed it, With only 1 background though *Cries with shame*

Code:

-- THIS DEFINES THE NAMES OF ARRAYS FOR LATER USE --
--
-- SCREEN ARRAYS --
SCREEN_TOP    = 1
SCREEN_BOTTOM = 0

-- Create 1st Tile Layer --
BGTopMap = Screen.LoadTileBG()

-- Loads the Background --
BGTopMap:LoadPalette( "stars.bmp.pal" )

-- Loads the Tile data --
BGTopMap:LoadTiles( "stars.raw", 256 )

-- Loads the map data --
BGTopMap:LoadMap( "stars.map", ( 256 / 8 ), ( 192 / 8 ) )

-- Initialize Top screen --
Screen.Initialize( SCREEN_TOP, BGTopMap )

while true do
if Pads.Start() then
break
end
end

I don't have a clue what I was on when I entered the code in the post above.

But for some reason it doesn't look right.

[Zhen]

I think that you have two thinks wrong.

The first one and worst one, You use the variable BGBottomMap  without assign a value. So the value of BGBottomMap is nil. This can be the problem of the emulator crash.

The second one, you assign two different layers to the same variable. So you lost the reference of the first layer. The first layer will be eliminated by the Garbage Collection  ( the process that delete the data that nobody uses )

Code:

-- Create 1st Tile Layer --
BGTopMap = Screen.LoadTileBG()

-- Create 2nd Tile Layer --
BGTopMap = Screen.LoadTileBG()

Zhen

[daltonlaffs]

Oh yeah, he's good 

[LeightonW87]

I can see what you mean, lol I never noticed that.