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Topic: Building tunnels (Read 21764 times) previous topic - next topic

Building tunnels

I don't get it.

"Tunnels must start on a single way"? What the heck does that mean ??? I don't think it's married...

Re: Building tunnels

Reply #1 –
You have to draw track up the sloped tile from the lower horizontal tile, in order to be able to draw the tunnel mouth "over" that piece of track.

Ctrl click if you want JUST the mouth (ie not a straight tunnel). Then go into underground mode and use the tunnel tool to build tracks.

If you don't ctrl click, it will cut a tunnel all the way to the natural exit in a straight line. If the exit tile isn't correctly aligned, it won't build.

Re: Building tunnels

Reply #2 –
Quote from: AP – on
You have to draw track up the sloped tile from the lower horizontal tile, in order to be able to draw the tunnel mouth "over" that piece of track.
Yeah, that's what I did.
Quote
If you don't ctrl click, it will cut a tunnel all the way to the natural exit in a straight line. If the exit tile isn't correctly aligned, it won't build.

Ah. Wait. So what if there is already something at the other end?

Re: Building tunnels

Reply #4 –
If you use CTRL+click, you also need at least a single empty tile underground in front of the entrance the entrance, otherwise you still get that message.

Re: Building tunnels

Reply #5 –
Quote from: The Hood – on
If you don't use ctrl+click and there's something blocking the other end, no tunnel.

Gotcha. Seems pretty sick if you are building a road tunnel and at the other end of where the tunnel is there is... a road, but I can live with it.

Re: Building tunnels

Reply #6 –
Quote from: DaiStation – on
Gotcha. Seems pretty sick if you are building a road tunnel and at the other end of where the tunnel is there is... a road, but I can live with it.
I believe in that instance, if the road is correctly aligned for the exit (ie same as for an entrance), it will still build the tunnel. If it's wrongly aligned, then it won't.

Once you get going, you'll find building them in underground mode more reliable anyway. Note the tile co-ordinates in the bottom right corner, for calculating where your exit will appear.

Re: Building tunnels

Reply #8 –
What this means is that you need at least one tile on the underground side. In other words, it might be easier to have said "behind" the entrance.

In pretty much any case you're *likely* to build a tunnel, it will nearly certainly be free. But, for example, if you're building where two slope tiles meet - there's no free underground tile. Like this:

___/\___


But this will work:

     ____
____/     \____


There's more ways it might work and more ways it might not, but rather than guess: What problems are you having?

Re: Building tunnels

Reply #9 –
Well, just about every time I make a tunnel (and, so far, every time I use ctrl+click, and every time I do a rail tunnel) it comes up with the "Tunnels must start on a single way" message.

Re: Building tunnels

Reply #10 –
Check this out: http://[ simutrans [dot] us (site down, do not visit) ]/isaac/tunnel.jpg

It shows a couple of ways that tunnels will work - the four hills are intended to show two examples, with the road-without-tunnel being a 'before' picture and road-with-tunnel being the 'after'. In both cases, I CTRL+clicked to place the tunnels.

If this doesn't help, could you provide a screenshot of something you're having trouble with?
 

Re: Building tunnels

Reply #13 –
Okay, knowing it works on a different computer means we know you know how to do it, so it's not that. That's good progress. :)

What I would recommend as a next step would be to download another copy of Simutrans and put it in a different directory to test and see if a different *installation* on the problem computer works or no.