Scrolling Background - GameCreators Forum

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Drew the G

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Posted: 12th Jan 2006 01:07

Does anyone know how to post a continuous scrolling background.

Like, load in a bitmap and contineously scroll the background.

Thanks in advance.

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Muncher

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Joined: 28th Apr 2005

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Posted: 12th Jan 2006 05:50

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I guess you could load a bitmap off screen, and copy sections of the bitmap to the screen. It should look something like:

+ Code Snippet

Load bitmap "filenamehere.bmp",1
`...
do
`...
copy bitmap 1,x1,y1,x2,y2,0,x1,y1,x2,y2
`...
loop

Good Luck!

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Smithy

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Location: Switzerland

Posted: 12th Jan 2006 10:43 Edited at: 12th Jan 2006 10:45

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You can create an object like a plane or a sky-box/tube/sphere,
texture it and then use the function:

void dbScrollObjectTexture ( int iObject, float fX, float fY)
(func name in darkgameDevKit, I assume its "Scroll Object Texture" in DBPro)

fX, fY is the amount of units to scroll the texture.

//edit: If you need an "endless" scrolling texture, you need to handle it by yourself like texturing the object with a texture from a stream but I think this needs quite some code optimization to get it fast enough. You have the idea

Another way was to use the Backdrop but:
Excerpt from the helpfile:
"This command is now obsolete and using sky spheres and boxes is a recommended alternative."

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