I've been testing trains a bit more lately, and they even appear to work somewhat decently in this clip: http://xboxclips.com/LookMumNoScope/995919cd-7c05-4fd3-9979-9b236c94bf1c
I wanted to have the trains be engulfed in flames, with passengers screaming inside as the train passed by, which is something an early design of Terminal had according to the wiki. (The 'screams' can be heard in the above clip if you listen carefully). The fire particles don't update fast enough to be seen when moving at high speeds though.

There are still a large numbers of problems I ran into:
- This is a minor issue, but every 100 units the train stops for a tenth of a second, making it stutter its way across the track.
- It's a nightmare to get the train to follow the curve in the track at this speed, and getting the timing for the rotations right.
- This is really hard because as soon as the train starts moving it's impossible to select it again to make changes to the script. Even when I did manage highlight it for a moment as it buzzed by, the object properties will go blank when the train resets / leaves the boundaries of the map. So every time I had to adjust something, I had to exit forge, load the map again, apply all the scripts again with slightly different values, try it out, and repeat the process.
- When loading the map in a custom game, the train behaved differently than it did in Forge. The headlights and flames did move along with the train, but stayed in their original position.
- The biggest problem is that attaching a kill volume doesn't work. You can't script a kill volume to move, and when I attached it to the train after setting up the script on the train itself, the train stopped moving as well.
Without a kill volume, the force of the train itself does very little damage. It will often just drag a spartan in front of it across the track, and send vehicles flying out of the map. If it moves at highers speeds it can even pass right through you.
I suppose attaching a teleporter with an exit node somewhere out of the map is an option, but just blinking out of the map takes all the fun out of it in my opinion.

I'm sure there are many people better at scripting than me, and maybe someone will figure out a reliable way of doing it, but my main problem is still the object limit. I was only able to finish the map and get weapons and spawns in by leaving the tracks under construction, and I'll probably need to add some more spawns for slayer and strongholds too.

 

LookMumNoScope updated DEADLINE with a new update entry:

Deadline v2

Read the rest of this update entry...

 

I don't think I'm going to do any major overhauls to the map any time soon, besides maybe some small changes here and there, like the weapon pads.
I think I'll put it in cryo until assault releases next month (and hopefully a One Bomb variant).
I did make some sketches for a more symmetrical Terminal-inspired map during development, which would be better for more gametypes like Team Slayer, Strongholds, and normal CTF, so there's a possibility I'll get started on that.