Here's a video which demonstrates how it works:
with better quality on twitch
Following configuration can be used to set properties for a tunnel:
points = {mkr_tunnel1_a, mkr_tunnel1_b},
travelTime = 5,
lockedToTeam = "both",
simultaneousTransport = true,
lockForTeamDuringTransport = true,
allowInfantry = true,
allowVehicles = false,
The configuration should be self-explanatory.
Downloads:
Second Release:
Example map, .sgb
Example map, .sga
First Release (outdated):
Example map, .sga
Example map, .sgb (source files)
See the .sgb map in WorldBuilder to get an idea how it's done. Make sure to have a backup of the code, in case you are doing your own testings.
I will write a tutorial about this later.