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Newcomers DBPro Corner / Sprite help?

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one must fall
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Joined: 29th Aug 2006
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Posted: 20th Oct 2007 06:22
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I've actually been using dbpro for a little while now, and decided to go into 2d stuff. But, when i try to load a sprite into the game, everything goes ok, but i get the sprite's backround in it. Is there some way i could make that transparent?
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HeavyAmp
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Posted: 20th Oct 2007 07:08
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Pixels that have a color of RGB(0,0,0) Black wont be show on a sprite . So just make the background color of your image 0,0,0.

Better to be dead, than to live your life afraid.
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Zergei
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Posted: 20th Oct 2007 07:16 Edited at: 20th Oct 2007 07:17
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Also check the SET CURRENT COLORKEY command, which allows you to define the transparent color, in case you use other than black. (My case is some sort of violet "255,0,255")

Further on my stuff at...
TurboSquid.com
The3dStudio.com
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Clackersmith
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Posted: 20th Oct 2007 07:23 Edited at: 20th Oct 2007 07:25
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I personal like to use .PNG images for all my sprites. They will retain their alpha channel data when loaded. So providing they have been set up correctly in Photoshop or some other program that will allow you to set specific "alpha areas" of an image, you shouldn’t have to do anything in terms of setting transparence once the image has been loaded.

Just to add a little extra to what HeavyAmp is saying -
The 'set image colorkey R,G,B' function will allow you to define which colour of an image you wish not to be rendered (Default=RGB(0,0,0)).

But like I said I personal would use either a .PNG .TGA or a .DDS file because they support 255 levels of transparency unlike the standard 1.

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one must fall
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Posted: 20th Oct 2007 07:34
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Thanks, now it works!
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Clackersmith
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Posted: 20th Oct 2007 07:42 Edited at: 20th Oct 2007 07:50
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Here is a quick image a whipped up to show the difference between the default transparency and using a .PNG with 255 levels of alpha.



Apart from the obvious lack of transparency on the red box you should also be able to see a black outline around the "Alpha Test" text on the .BMP image.

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