Get Depth

[signifer123]

is there a way to detect if two things are on the same depth for something like the 3d tutorial here by:
senocular

If the stationary object I put on the thing for driving in 2d or 3d which ever way you want it hits one of the cars?

or iguess wat i want is how to do hittest in 3d using depths

[Integer]

i dont get all of what you are saying but..
as far as i know... it isnt possible to have
more than one object on the same depth

[signifer123]

it isn't well ya it is but thats a bad thing i want it so then wait a sec isn't this in the tutorial?