Using OpenGL for 2D game.

psyjax · 2003-10-10T20:04:06

Hey folks, I''m an SDL user and I also posted this question to the mailing list, but I figured this would be a good place to ask as well. In any case: I wanted to know what would be the best approach to my current game project which I am considering using OpenGL for.My game is an RPG which shifts between two modes, an Isometric perspective like Diablo, and a nice 3D dungeon crawl mode (using GL), much like the old Eye of the Beholder games. I''m considering doing both the 2D (isometric) portion and the 3D portion using OpenGL. But I am wondering if I will see good speed results this way? Will it be faster to do the 2d Part using regular blitting through SDL(a great 2D graphics library for those who don''t know), or OpenGL? One of the main reasons I want to use OpenGL for this portion, is for the simplicity in implementing lighting, scaling, rotation, etc. Also, I want to do neat 3d spell effects, the whole gamut of nice 3d eye candy on a 2d game board. What would be the best method for going about this in OpenGL? Would the best method be to render the 2D tile map onto an OpenGL surface every frame, as you would in regular 2D? Or, am I better off just sticking to 2D methods all together? I have never attempted something like this before, so excuse my ignorance. Any suggestions, or pros and cons you could give me would be gerat, as I am still in the initial design stages. I don''t wanna commit to something less I know it will work Thanks alot!

Graphics and GPU Programming Programming OpenGL

Started by psyjax October 09, 2003 09:34 PM

10 comments, last by psyjax 20 years, 6 months ago

psyjax

156

Author

October 10, 2003 07:33 PM

Wow! looks really nice. I agree it looks very good, but it''s not exactly what I wan''t for my project. I want a nice Iso view kinda like civilization III. With 3D effects on top.

Most of you seem to suggest mapping the tiles onto Quads then blitting them to screen. This would be easy for square tiles, but what about isometric raster tiles? Like the ones I show in my screenshot above.

This one is giving me a run for my money :D

Thanks to everyone, for your comments so far.

Raduprv

997

October 10, 2003 08:04 PM

I highly suggest you to go in real 3D, but isometric, like I do. So map the tiles on quads.
The reason behind this is that it will be much easier for you to keep the consistency of the world, rather than render every thing via a different method.
Second, giving the user the ability to rotate the camera can''t hurt

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Using OpenGL for 2D game.

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