Mouse Coordinates

[MechatheSlag]

Hi.

I'm trying to figure out when the player clicks on a 3d sprite. Which method would be the easiest to perform this check?

Thanks!

[Pixelthief]

Record a z-buffer of all your screen, and link sprites ID's into it and then compare to that?

[MechatheSlag]

An example would be much appreciated, I am incredibly new to OpenGL :P

[nivram]

Pixelthief, may I ask what is a z buffer?

Thanks
Marv (the brainless)

[Looki]

http://en.wikipedia.org/wiki/Z-buffer

Basically, a pixel has doesn't just have a color, but also a depth value that describes how far the visible object on the pixel is away.

[Atom]

Totally off topic but does anyone know whats happening with the development for these objects?

Seems it has been a while since there was any news for them now.

[nivram]

Thanks Looki for helping out.

Marv

[Pixelthief]

Yah, your pixel array should have

*Depth (the Z value, duh)
*Pixel Color
*Pointer to object (ID)

that way simply clicking on a specific pixel will access
depending on implementations ie hardware vs software, these could be simultaneous sidebyside 2 dimensional arrays, or a single 3 dimensional array. In opengl I assume it would be the former

[Atom]

Hopefully if Min is still making the collection a bounding box, depth test or full collision events object with these types of options could be added. This would be quite a useful extension for the collection i think.

[Mathias]

You should use the GL_SELECT render mode for this-- a nice tutorial can be found here