Pistonbolt-start with selection

Based on Ilmango's designs, adjusted to enable multiple destinations. Not-shown in sketchfab: the arrow in an item-frame on the black block next to the entree, this arrow can point to the several glassblocks surrounding it, every angle gives a different red-stone signal, which will be sent along on the righthand side of the piston-bolt, at later junctions I can read out this value to choose the destination. (btw, this adjustment for multiple destinations I've seen in the SciCraft videos of Ilmango and I've tried to create my own version)