Calculating the Extreme X, Y, Z of a .bsp?

Baker · Post by **Baker** » Tue Dec 23, 2008 4:06 am

Does anyone know how to within the engine calculate the extreme X, Y, Z coordinates (min, max X ... min, max Y, etc.)?

I've been looking through the .bsp stuff and would like to know for "minimap" purposes, but alas I don't understand enough to be able to identify how to capture these values.

metlslime · Post by **metlslime** » Tue Dec 23, 2008 9:09 am

I guess, while loading vertices, compare and modify as needed a mins[] and maxs[] for the map

Electro · Post by **Electro** » Tue Dec 23, 2008 10:06 am

Yeah like what metlslime said.

setup a mins to be 99999999 (or some ridiculous number to make sure everything is caught)
maxs to be -99999999

if (vert[0] < mins[0]) mins[0] = vert[0];

same for y and z etc... you get the idea
It's like starting off with an inverted box, then pushing it out every time you have a vertex that requires it to grow.

The result should be a bbox for 'worldspawn'