Docked contact logic, and Directional textures

[GaeasSon]

Not that the new rail system isn't already --Freaking awesome!-- but the current work inspires me to wonder what minor additions could push it to the next level.

1. Give the new momentary switch activator block a rotatable texture such that any face could represent movement in 3 dimensions:

• The current activator palm-print in red and blue
• 4 directional glyphs

2. A "pass-through" block which can be mounted on the docking face of a docked structure. The pass-through assumes the texture of the block it faces, and conveys clicks-through from the docked structure to the host structure. Thus, from the docked structure you could pass commands and information through to the host. (elevator buttons, self-taxi'ing shuttles...)

Pass-through logic would be distinct from the planned wireless logic, as the docked structure would make different logical connections based on its location.