new bridge building

Topic: new bridge building (Read 9804 times) previous topic - next topic

new bridge building

April 21, 2009, 03:59:39 pm

I think bridges could be built by this way :
_ back image + existing rail image + front image

for example, take the 160 km/h bridge of pak128, remove its rail. Then : the bridge could be built with every existing rail (and speed), for example : having a 400km/ rail in this bridge.

With this new bridge system, nicer bridges'group could be built (example in the first screenshot).

But there will be problems with other waytypes like maglev. Imagine this system with maglevs, a MLM bridge with AMT way for example

So another idea : having a special color for back image of bridges which would be the only part of the picture that shows the way. (see the second picture)

Re: new bridge building

Reply #1 – April 22, 2009, 09:07:02 am

I support this idea, it would make bridges more flexible (having more types for different speeds)!!!

Re: new bridge building

Reply #2 – April 22, 2009, 10:52:29 am

I like it, but beware the bridge type should be the speed limit, no matter which rail has it got inside; i.e. wooden 50 kmh bridge with 400kmh rail over = 50 kmh bridge. It only would be a graphics improvement, no costs would get modified. At least I don't think they should.

Re: new bridge building

Reply #3 – April 22, 2009, 11:01:23 am

The sensible rule would be one that took the lowest speed limit of the track and the bridge.

Re: new bridge building

Reply #4 – April 22, 2009, 12:40:41 pm

I don't well understand that you mean :/

Re: new bridge building

Reply #5 – April 22, 2009, 12:52:30 pm

Quote from: gauthier – on April 22, 2009, 12:40:41 pm

I don't well understand that you mean :/

We mean that an old wood bridge should always have its original speed limit (very low). If you want to put a 400 km/h track over a wood bridge because the graphics are smarter then perfect, but a train shouldn't go at that speed over an old wood bridge, even if there is a 400 kmh track over it... it's made of wood!!

Re: new bridge building

Reply #6 – April 22, 2009, 01:23:23 pm

Similarly, if the track is 60km/h track, but the bridge can 160km/h track, the speed limit of the bridge should still be 60km/h unless and until the track is upgraded to one with a speed limit of 160km/h or more, in which case, the bridge would have a speed limit of 160km/h (but not higher).

Re: new bridge building

Reply #7 – April 22, 2009, 04:28:20 pm

I've often wished for this for road bridges...

I wonder if it would be easy enough, with this change (if approved), to make it so a bridge would allow multiple ways (if specified -- but one bridge might work for road *or* rail, for example)

Re: new bridge building

Reply #8 – April 22, 2009, 05:45:56 pm

It would be good if that could also be applied to tunnels as well. Decoupling ways from bridges/tunnels give more flexibility.

As for speed limit, I am not sure if a bridge itself has inherent limitations on speed. It seems more like that it has inherent limitations on weight -- that's why it's good to have weight limit enforced. The current speed limit of the bridges/tunnels might only be the speed limit of the built-in way/track. For example. if a bridge can safely support the weight of a bus and the road permits a speed of 200km/h, I think it makes little difference to the bridge whether the bus is driven at 100km/h or 200km/h. But maybe I am wrong here ...

Re: new bridge building

Reply #9 – April 22, 2009, 06:04:46 pm

Quote from: Isaac.Eiland-Hall – on April 22, 2009, 04:28:20 pm

I wonder if it would be easy enough, with this change (if approved), to make it so a bridge would allow multiple ways (if specified -- but one bridge might work for road *or* rail, for example)

With some work this could be done. Bridges and tunnels can be separated from the ways actually built upon them. This would however mean a complete overhaul of the current system.

Re: new bridge building

Reply #10 – April 22, 2009, 06:05:34 pm

Unfourtunately the way images is the bridge background as far as I remeber.

Re: new bridge building

Reply #11 – April 22, 2009, 07:30:14 pm

I meant, not only the code but also the graphics / paks have to be reworked.

Re: new bridge building

Reply #12 – April 22, 2009, 07:33:36 pm

Ugh, how would you make a nice bridge to fit both road and rail? The respective widths are too different.

Re: new bridge building

Reply #13 – April 22, 2009, 09:44:44 pm

no no I agree with VS, waytypes would be kept but for limitation :
_ the bridge defines the weight limit and the track defines the speed limit. A train can run at 300 km/h on a wooden bridge if it's not to heavy (but of course high speed train are very heavy ...).

If this idea is made, it would be the time to remake all bridges and tracks/roads (see the track replacement project of pak128 for example). (I'm playing only pak128 and a bit pak96c so I don't know if other paks are needing this kind of replacements).

Re: new bridge building

Reply #14 – April 23, 2009, 09:06:11 am

Quote from: gauthier – on April 22, 2009, 09:44:44 pm

no no I agree with VS, waytypes would be kept but for limitation :
_ the bridge defines the weight limit and the track defines the speed limit. A train can run at 300 km/h on a wooden bridge if it's not to heavy (but of course high speed train are very heavy ...).

Theoretically, if the bridge was perfectly plain this might be right. But real bridges never are. And all those little humps and bumps and the tiny bit the track hangs down between the pillars result in higher forces if the same train crosses faster. And there is also higher friction if it runs faster, so even a plain bridge would have to sustain higher forces. For gameplay it's not that good either, i think, everyone would build the cheapest brige with the fastest track on top.

And BTW high speed p****enger trains are light, goods trains are really heavy.

Re: new bridge building

Reply #15 – April 23, 2009, 09:55:32 am

you're right ... so the good solution would be : a speed and weight limit on bridge but if, for example, the pak128's 160km/h bridge keeps its speed limit, for good tracks only 300km/h bridge would be used, so this idea becomes definitely useless.

or simply having multiples bridges with 300 or 400km/h speed limit, it would just become only a graphical choice.

Re: new bridge building

Reply #16 – April 23, 2009, 10:39:39 am

Well, the 300 km/h bridge with the 200 km/h track should still be cheaper to maintain than same bridge with faster track. And the bridge is maybe 12 tiles long while the whole connection is 100 tiles (examples) so you have to think is it really worth to change the bridge only because the train runs 40km/h more on 12 tiles.

BTW: currently the speed bonus is calculated from the vehicle's speed which is detremined in the pak file. So it's never worth it. But only advanced players know that, so the noobs will suffer. Isn'T that what we all want.