C_trace is not detecting sprites correclty bounding box.
do they need to be power of 2?

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Thanks.

Sprites have no mesh. So you can't use polygonal collision detection with sprites - the POLY flag should not be set. A sprite collision shape is a box.

JCL,
the incorrect detection is also occuring when you
use c_scan with ONLY the SCAN_TEXTURES flag set.

It also appears to get worse if the sprite has a pan or tilt value applied...

Its not a polygon related issue.

Ah, ok. I'll look into this.

Thanks.

The reason of the problem was the fact that sprites are billboards by default, thus their collision hull is vertical. When you trace them from above, you'll get hits slightly outside the image. Only sprites with a nonzero angle placed in WED have an oriented collision hull.

This will be fixed. As a workaround, you can use flat models instead of sprites.

flat models, like just a face in med?

Yes.

but i have to .. resize the face according to the bmap size_right in runtime

scale_x y ?