To begin, this has nothing to do with my current project - I'm considering doing another on the side, but before I start, I want to make sure it's possible.
I've done many, many attempts at vehicles in the past, and most of them have worked to some degree. I've done APCs, planes, even an X-Wing with working S-foils (but the game crashes when you fly upsidedown ). All of them have used the principles of thruster-driven movement.
Now, what I want to try to conceptualize is a bi-pedal vehicle; essentially, a mech. Ignoring humanoid qualities other than legs, is it even possible to create a movement system that would accomodate even flat terrain? Multiple func_door_rotating's with brushes attached don't work, since the brushes pass through the ground. My next idea was an arrangement of balanced phys-prop brushes, held together by contraints as "muscles", with some sort of force (perhaps parented func_trains, if that is even possible) moving the legs in a constant movement. To accomodate falling over, some thrusters could be used to push the mech back into an upright position.
However, I've not explored such complicated movement systems before, and perhaps someone out there already has. If anyone has a single clue or even a whimsical comment about how a walking vehicle - however rigid it might be - could be accomplished, please give me your opinions...before I start working on something that will fail late in development.