/// <summary>
/// calculate a unit's vertical distance (height) above ground level (mesh). this is the units position
/// relative to the ground and is independent of any other character. note: this isn't actually the ground,
/// it's the height from the mesh and the mesh is not guarranteed to be flush with the terrain (which is why we add the +2f)
/// </summary>
/// <param name="u">unit</param>
/// <returns>float.MinValue if can't determine, otherwise distance off ground</returns>
public static float HeightOffTheGround(this WoWUnit u)
{
var unitLoc = new Vector3(u.Location.X, u.Location.Y, u.Location.Z);
float zBelow = u.FindGroundBelow();
if (zBelow == float.MaxValue)
{
return(float.MaxValue);
}
return(unitLoc.Z - zBelow);
}