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      GameDev.net and CRC Press have teamed up to bring a free ebook of content curated from top titles published by CRC Press. The freebook, Practices of Game Design & Indie Game Marketing, includes chapters from The Art of Game Design: A Book of Lenses, A Practical Guide to Indie Game Marketing, and An Architectural Approach to Level Design. The GameDev.net FreeBook is relevant to game designers, developers, and those interested in learning more about the challenges in game development. We know game development can be a tough discipline and business, so we picked several chapters from CRC Press titles that we thought would be of interest to you, the GameDev.net audience, in your journey to design, develop, and market your next game. The free ebook is available through CRC Press by clicking here. The Curated Books The Art of Game Design: A Book of Lenses, Second Edition, by Jesse Schell Presents 100+ sets of questions, or different lenses, for viewing a game’s design, encompassing diverse fields such as psychology, architecture, music, film, software engineering, theme park design, mathematics, anthropology, and more. Written by one of the world's top game designers, this book describes the deepest and most fundamental principles of game design, demonstrating how tactics used in board, card, and athletic games also work in video games. It provides practical instruction on creating world-class games that will be played again and again. View it here. A Practical Guide to Indie Game Marketing, by Joel Dreskin Marketing is an essential but too frequently overlooked or minimized component of the release plan for indie games. A Practical Guide to Indie Game Marketing provides you with the tools needed to build visibility and sell your indie games. With special focus on those developers with small budgets and limited staff and resources, this book is packed with tangible recommendations and techniques that you can put to use immediately. As a seasoned professional of the indie game arena, author Joel Dreskin gives you insight into practical, real-world experiences of marketing numerous successful games and also provides stories of the failures. View it here. An Architectural Approach to Level Design This is one of the first books to integrate architectural and spatial design theory with the field of level design. The book presents architectural techniques and theories for level designers to use in their own work. It connects architecture and level design in different ways that address the practical elements of how designers construct space and the experiential elements of how and why humans interact with this space. Throughout the text, readers learn skills for spatial layout, evoking emotion through gamespaces, and creating better levels through architectural theory. View it here. Learn more and download the ebook by clicking here. Did you know? GameDev.net and CRC Press also recently teamed up to bring GDNet+ Members up to a 20% discount on all CRC Press books. Learn more about this and other benefits here.
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BaneTrapper

sfml, when loading images/textures ignore background color!?

3 posts in this topic

Hello.
What i am trying to do is draw "Hero.png" 50x50 image to screen.
Problem is that i don't know how to ignore one color, so it does not draw a square of pink(color i use for background on "Hero.png" around my character. Therefore make the (255,0,255) color transparent on my sprite.

I cant find a function to do this in sfml.

in SDL the function is something like
[CODE]
//Set all pixels of color R 0, G 0xFF, B 0xFF to be transparent
//SDL_SetColorKey( optimizedImage, SDL_SRCCOLORKEY, colorkey );

//int SDL_SetColorKey(SDL_Surface *surface, Uint32 flag, Uint32 key); This is definition

SDL_SetColorKey(MyImage,
SDL_SRCCOLORKEY,
SDL_MapRGB(Screen->format, 255, 0, 255);

[/CODE] Edited by BaneTrapper
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Why not open up your favorite photo editing program (paint.net is free and will do this), go to the magic wand tool (or use an eraser if you can't get paint.net) and select the pink, delete it. Unless your using MS Paint, it should be transparent when you save it. Why you'd use pink I don't know. If you don't have a magic wand here's how:

Use an eraser and delete all the pink. In SFML, you really can't do this without writing your own special and pointless line of code. However, I highly reccomend paint.net, because it makes doing this extremely easy.
EDIT:
The magic wand is a photo editing tool, google it. Edited by superman3275
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[quote name='superman3275' timestamp='1350938251' post='4992890']
Why not open up your favorite photo editing program (paint.net is free and will do this), go to the magic wand tool (or use an eraser if you can't get paint.net) and select the pink, delete it. Unless your using MS Paint, it should be transparent when you save it. Why you'd use pink I don't know. If you don't have a magic wand here's how:

Use an eraser and delete all the pink. In SFML, you really can't do this without writing your own special and pointless line of code. However, I highly reccomend paint.net, because it makes doing this extremely easy.
EDIT:
The magic wand is a photo editing tool, google it.
[/quote]

Well if that is the case ok then. And thank you!
Already edit all my images. Did it with gimp...
Again thanks you very much on fast reply. Edited by BaneTrapper
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If you already have images keyed to a certain color, you can set that color to be transparent using createMaskFromColor()

http://www.sfml-dev.org/documentation/2.0/classsf_1_1Image.php#a22f13f8c242a6b38eb73cc176b37ae34
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