Getflorzofslope
getflorzofslope <sectnum> <x> <y> <return>
Returns the z coordinate of the floor at the coordinates <x> and <y>. If the sector doesn't have a floor slope then it immediately returns the sector's floorz so it's not that slow. You may want to check for slopes yourself with floorstat if you think the overhead of calling this function is too slow.
For the most accurate usage, use it in conjunction with updatesector or updatesectorz.
getactor[THISACTOR].x x getactor[THISACTOR].y y getactor[THISACTOR].z z updatesectorz x y z temp getflorzofslope temp x y temp2