Need help with prop_dynamics

[Shrekmann]

I'm a seasoned mapper with a few maps on the workshop, but there is one thing I haven't been able to figure out; how to make prop_dynamics move? I am working on this map that takes place on the rooftops of buildings in a city (like ttt_rooftops, but in TF2) and I want to make it so that there are some moving cars below.

 

[worMatty]

prop_dynamics have no function to move on their own. They need to be attached to a moving entity via the use of parenting.

Some example entities are: func_tracktrain, func_door, func_movelinear, func_door_rotating, momentary_rot_button.