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AppGameKit Classic Chat / How to change 1 color RGB?

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xGEKKOx
AGK Master
15
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Joined: 7th Dec 2008
Location: Italy
Posted: 25th May 2012 20:24
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Any of you had ever changed 1 only color in a sprite?
Example :

Change all 255,0,255 in 0,255,255....
There is a way to do this?


iPhone/iPad Games/Apps : Street Karate Fighter - 90s VideoPokers Simulator - Ball VS Brick - CB RadioBox - Artic
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Ancient Lady
Valued Member
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Joined: 17th Mar 2004
Location: Anchorage, Alaska, USA
Posted: 25th May 2012 20:30
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Yes, many times.

If you start with a white/grey image file, you can make it just about any color you want using RGB.

This is the command:



Cheers,
Ancient Lady
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Rich Dersheimer
AGK Developer
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Joined: 1st Jul 2009
Location: Inside the box
Posted: 25th May 2012 22:28 Edited at: 25th May 2012 22:32
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You can also use any or all of these...



for instance, the first time a player starts my current game, the "How to Play" button cycles from Alpha 255 to Alpha 100 and back up again, until the player has vi

Something like this..

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xGEKKOx
AGK Master
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Joined: 7th Dec 2008
Location: Italy
Posted: 26th May 2012 04:11 Edited at: 26th May 2012 04:13
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Yes i use this in my games, but imagine we have a sprite that have 3 colors as template...
- Yellow
- Purple
- Green

255,255,0
255,0,255
0,255,0

Now i wanna change only the green to red.
So ...
which method is the best to do it without changing yellow and purple??
Is there a way to take Bit per Bit the PNG data? Or i need to develope a new internal function in c++ to manipulate the PNG file?

iPhone/iPad Games/Apps : Street Karate Fighter - 90s VideoPokers Simulator - Ball VS Brick - CB RadioBox - Artic
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