Newsgroups: comp.os.msdos.djgpp
From: "A. Jans-Beken" <jabe AT oce DOT nl>
Subject: Allegro - shadow of sprites
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Date: Wed, 26 Mar 1997 01:14:14 GMT
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To: djgpp AT delorie DOT com
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In a game I am working on I want objects to cast shadow on the ground. 
With Allegro it is possible for graphic object to regard color 0 as 
transparent. What do I have to do to replace color 1 with the current 
background color minus (for example 3). 

I tried to fix it in the source-code of Allegro my self but this proved 
to be to difficult for me (I don't know too much about assembler 
programming!).

I have heard that color 1 is used as the "shadow color" in other projects 
as well so it seems the logical choice to me.

greetings,
A. Jans-Beken