Irrlicht Engine

I'm trying to setup the camera carefully so that objects on screen have an exact size measurable with a ruler against the screen. I'm calculating field of view based on my screen size and the distance from my eye to the screen.

FOV (in radians) = 2 * atan(0.5 * screen_height / eye_to_screen)

Then ...

That worked. Thanks.

For anyone else, here's the code to add to your scene manager:
And to your scene node's material:

I've seen several references to this issue around the forums but no definitive solution and the suggestions I found didn't work for me.

I'm using a simple custom scene node very similar to tutorial 3 to draw textures in 3d space. Basically, it's my own billboard scene node. The textures are pngs ...

Thanks to slavik262 and Nalin for your suggestions. I tried both.

I modified my scene node to handle a patch of 20x20 tiles rather than one scene node per tile. This improved performance slightly, doubling the frame rate, but not as much as I hoped. I discovered that irrlicht was still calling the ...

Thanks for the help. The level tiles are static, other than hiding them if they get destroyed in the game, so no material switching is happening. I'll try making a scene node that handles a roughly screen-sized mesh of tiles. Thanks for the tip on texture atlases. I'll also try the method of ...

I have created a very simple custom scene node based on tutorial 3. It's basically a billboard scene node but it doesn't automatically rotate to face the camera. My code is identical to tutorial 3 except that the geometry is 4 vertices and two triangles to make the billboard, and it has a texture ...

Linux is a possibility. I've tried moving my development over to Linux... so far I've failed, but that's because I'm totally new to the platform.

Thanks for the comments. I have built in that each tile randomly selects from four variants of each material type. But I agree the differences between the variants are too subtle right now. I'll be working more on that. And a mini map is definitely on the to-do list.

An update on my 2d irrlicht project:

I'm now using pngs instead of bmps for sprites and tiles. Inkscape exports pngs and Irrlicht draws them with the alpha channel so everything is nicely anti-aliased.

I've added enemies and some AI. You can slay an enemy with your sword, but enemies don't fight ...

Well, the style isn't going to change much cause it's my art style so thanks for the positive feedback. I have added a running animation, and my next plans graphically are to add layers to the background that move at different speeds to convey depth.

This is my current Irrlicht project. 2D tile-based game programming has been really rewarding. A lot less work to make something respectable-looking and fun to play. I also have a new appreciation for the brilliance of super mario brothers.

http://farm4.static.flickr.com/3299/3548172842_deb889d184 ...