## News:

Beta test the new forum at https://simutrans.forum/
Want to praise Simutrans?
Your feedback is important for us .

## pak conversion (128) WIP

Started by sdog, September 09, 2011, 05:01:14 PM

0 Members and 1 Guest are viewing this topic.

#### sdog

I've started to work on a conversion of pak128 to experimental. In this thread i would like to outline a few of the concepts i use for the balancing. In a pak like pak128 with vehicles from all over the world, the main aim is  not to have real world economic values, but internal consistency of the  pak. the project is at github: https://github.com/sdog/pak128-experimental

The plan is to calculate load times based on the number of doors on either side n and passenger capacity p. The width of the door should have a non-linear relationship to the throughput. This will be neglected though. Thus a single door at an old long range trains has a value of 1, double doors 2, i shall give wide double doors (eg in subways) a value of 3.
t = c n p/3
c is a constant conversion factor, to be tweaked to get results compatible to the game.

running cost
per km running cost of vehicles is to be calculated based on the engine power, combustion type and (perhaps fuel type). The primary energy required for one km at 2/3 maximum engine power is calculated at half maximum speed v. The monetary cost is a time dependent function, normalized to 1000 for year 2000. A constant factor c that is tweakable is used to convert to simutrans money.

Unpowered vehicles need more thought. Two approaches might be sensible. Guess acceleration profiles and base cost on kinetic energy (at half max speed) or on friction only, introducing friction/drag coefficients.

Beware that all of this is super crude, averaging over non linear relations is a bad thing to do.

monthly vehicle cost
http://forum.simutrans.com/index.php?topic=7937.0

At this point in time i collect data on powered rail vehicles. As soon as i have entered enough to have a good variation for testing, i can start to write the scripts for dat creation.

to be continued in later posts to this thread

#### Milko

Hello

I am speechless! Another great project from the start.

If you need some version of my plane pak128 not hesitate to ask ....

I have this blender models available:
http://forum.simutrans.com/index.php?topic=7958.msg75844#msg75844

I love to build updated versions of "pakset" (as nightlies), I saw that in the project of pak128 there is a file that works with XP called "pak128.bat" you've never used it? you know if it works? I'd like to try it.

Thanks
Giuseppe

#### sdog

the github repo i have is mostly identical with the svn mirror of open-pak128.

Thanks for offering planes. However, i want to keep all graphics a subset of open pak128, so best way would be including your planes there. The reason therefor is, that i don't want to divert the valuable resource of graphics from the main pak-set this is merely a branch of.

#### greenling

It ´s possible that´s the talking over this projekt be paused until tomorow 17:00 clock?
I have morning make a job and my job end at 16:30!
Thanks
Opening hours 20:00 - 23:00
(In Night from friday on saturday and saturday on sunday it possibly that i be keep longer in Forum.)
I am The Assistant from Pakfilearcheologist!
Working on a big Problem!

#### HeinBloed

This is exactly what I've been waiting for before starting a new game of Simutrans again, very much appreciated! When my final uni exam will be done in 5 weeks, I'll jump on this, hopefully also being able to help with testing.

You wrote that you intend to make the graphics a subset of open pak 128, are you planning to convert most or even all vehicles though?
(previously known as "tttron")

#### sdog

I can't say at this point in time if i will include all or most vehicles. I likely start with a very small subset and increase coverage of the timeline from there.

oh, and don't hold your breath, progress will be quite slow, it does not have a very high priority.

#### greenling

Sdog
i have be looking the Png and Dat´s form the sdog-pak128-experimentalscore.zip
on and i have be get an idea.
It´s possible to use parts from pak128.britain to make the pak128 exp better?
The Mainmenu from pak128.britain have all waytyp that be give in simutrans!
Opening hours 20:00 - 23:00
(In Night from friday on saturday and saturday on sunday it possibly that i be keep longer in Forum.)
I am The Assistant from Pakfilearcheologist!
Working on a big Problem!

#### sdog

more is not necessarily better greenling. i don't think it would be a good idea to make an amalgam of those pak sets. It might always be possible to adpot single paks/png to the other pak set, but please discuss this at the fora of the pak sets in questions. I will not ad new graphics not included in standard pak128 into the pak.

If soemthing is needed urgently for the experimental version, it is better to make arrangements to have it included in upstream, standard pak128.

#### greenling

sdog
why want you not be have the waytyp Narrowgauge in the mainmenu?
Opening hours 20:00 - 23:00
(In Night from friday on saturday and saturday on sunday it possibly that i be keep longer in Forum.)
I am The Assistant from Pakfilearcheologist!
Working on a big Problem!

#### sdog

greenling, let's talk about this in roughly a year or so, shall we? You can see at the github how far my progress is so far. Nothing is a very good approximation.

#### jamespetts

It's excellent to see another pakset become available with Experimental features - thank you for your work on this, Sdog. One or two small comments on the balancing: don't you take into account door size as well as door numbers for your loading times, as well as the internal layout of vehicles (e.g., whether or not there is a "standback" area near the doors to prevent people standing in the door areas and effectively making the door space narrower)? Both of those are significant for loading times. As for per kilometre running costs - ought one not also factor in fuel economy (which varied considerably especially amongst steam engines) and reliability?

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### sdog

James, i don't think i can factor in internal layout of the carriages, at least not at this point in time. i assume that more doors in general also correspond to a more rush oriented internal layout. But there is room for fine tuning in the future. The number of doors can easily be seen at the png or photos on the net, this is the reason i chose it as factor determining load time.

The fuel economy is already factored in in the primary energy demand of those vehicles. For steam engines i plan to use a time dependent function or input file to account for the increase of fuel efficiency. However i only have to take care of a timeline from 1930 to 1960, there was not so much change in steam engines.

This might be quite a bit more difficult for diesel-electrics.

I have two three questions for you James:
There's the case of EMD FT trains, each A unit is not bidirectional, it has a cab at one end. B units have only motors. But they were often used as A+B-B+A sets in front of trains, this set is bi-directional in real live. I suppose there's no way to reflect this in experimental at this point of time?

(not actually a question, more a request) Did you already have a look at my extension request?

#### jamespetts

Sdog,

the EMT FT units should be able to be simulated, as long as you have two different "A" vehicles: one for each direction, with neither set to bidirectional and the rear one set to "can_lead_from_rear=1".

As to the extension request, I did see that, but haven't had time to reply yet, as it's a complicated topic - I shall get around to replying before too long, I hope!

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### sdog

Take your time with replying. I've only mentioned it here since you've been quite busy last week and i wasn't sure if you noticed it.

Oh, the situation with the EMD FT set is like this A+B-B+A'-CCCCC where C are the freight cars.The whole unit would have to be shunted to the other end of the train, just not turned around itself. Does can lead from rear work with units not at the end of the train too? I always assumed it would have to look kile this: A-B-CCCC-B-A' for A' the reverse A unit to lead from rear.

#### jamespetts

Ahh, yes, "can lead from rear" does apply to the very rear vehicle only. I can't remember whether this will work properly or not without a change to the code - can you try it with all vehicles set to bidirectional? I suspect that it won't work, though - can you think of an abstraction with which these things can be coded?

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### sdog

Setting bi directional would turn the A engines the wrong way. In effect it would work just the same, just look a little silly.

Perhaps a check could be done, if a can lead from rear is in the middle of a consist, the part between first vehicle and the last "can lead" from rear vehicle should be treated like bi-directional single engines and shunted to the rear of the consist without being turned? Paksets have to take care to set up constraints in a way it can't get broken. (in this case, have the can lead from rear A' only couple to A and B units, allow B units only after an A unit)

There are hardly any trains/engine where this is necessary, i'm not sure if it's worth to invest coding time. Afterall it's just a rather cosmetic flaw.

#### ӔO

#16
I've seen some GP60 B units lead a train, but those instances are very rare.

How about adding a value like "can run in reverse" and whenever more than one locomotive in the convoy consist has that value, the last locomotive is graphically turned to face reverse?

A engines will be flagged for "can run in reverse" and B engines will not.
So when you only have A-B, the game should turn around the entire convoy, but in A-B+B-A, A-B-A, A+A and A+A+A configurations the last engine will get turned around to face backwards.

This should also work with "can lead from rear", but I've yet to see a double headed commuter train.

My Sketchup open project sources
various projects rolled up: http://dl.dropbox.com/u/17111233/Roll_up.rar

Colour safe chart:

#### jamespetts

Hmm - I'd like to be able to accommodate this without having to add any parameters, if possible. Even though it may be a somewhat marginal case, I do like to accommodate such marginal cases where possible, as I do for the Garrett in the Pak128.Britain-Ex pakset. As for SDog's suggestion - this might work, but I worry about what would happen if one had more than one "can lead from rear" in a convoy...?

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### ӔO

IMO, The easiest way by far, without adding any code, is to just add a reverse facing A unit that can be added onto the B unit.

In pak128, there's the IORE, which has two single ended engines permanently fixed back to back.
My Sketchup open project sources
various projects rolled up: http://dl.dropbox.com/u/17111233/Roll_up.rar

Colour safe chart:

#### greenling

Opening hours 20:00 - 23:00
(In Night from friday on saturday and saturday on sunday it possibly that i be keep longer in Forum.)
I am The Assistant from Pakfilearcheologist!
Working on a big Problem!

#### ӔO

#20
@greenling
yep, basically most north american diesel-electric locomotives where they only have a cab on one end, but can be run in both directions or require at least two cab engines pointing away from each other to run in reverse. Not necessarily including pax trains with push-pull coaches, because that feature is already implemented and works.

This sort of configuration, particularly.
It's inconvinient for the majority of north american locomotives to run backwards due to poor visibility, so there are usually two or more and the last one usually faces backwards.
http://www.american-rails.com/images/NS_DK_GP60.jpg
http://www.railarchive.net/vintagediesel/co3004-5911_dvl.jpg
My Sketchup open project sources
various projects rolled up: http://dl.dropbox.com/u/17111233/Roll_up.rar

Colour safe chart:

#### greenling

Ít´s desirable to learn how to use engines with on sided Stearing cab?
Opening hours 20:00 - 23:00
(In Night from friday on saturday and saturday on sunday it possibly that i be keep longer in Forum.)
I am The Assistant from Pakfilearcheologist!
Working on a big Problem!

#### ӔO

Quote from: greenling/As.fr.Ar.fo.Si. on September 12, 2011, 10:23:15 AM
Ít´s desirable to learn how to use engines with on sided Stearing cab?
sit at the back of a full bus and think how easy it would be to control the bus from there.
My Sketchup open project sources
various projects rolled up: http://dl.dropbox.com/u/17111233/Roll_up.rar

Colour safe chart:

#### greenling

With the word: on sided Stearing cab hate i be mean the Vehicle on the photos what i make public!
Opening hours 20:00 - 23:00
(In Night from friday on saturday and saturday on sunday it possibly that i be keep longer in Forum.)
I am The Assistant from Pakfilearcheologist!
Working on a big Problem!

#### Milko

Hello Sdog

I created a ".bat" file for windows that can fill in the pak128exp. I am attaching to allow those interested to generate nightly. If someone tries it and does some testing I would be very grateful.
I did some tests to see in action pak128exp, for now I only gave a brief glance. The only thing that I noticed is that using the current settings get city with few inhabitants but very large. James long ago I had suggested to increase the value of "renovation_percentage" on file "cityrulestab". By setting "renovation_percentage" around "40/50" the situation has improved. But I do not know whether to address this issue, increase "renovation_percentage" is the best solution or if there are alternative solutions to be preferred.

Giuseppe

#### sdog

against my plan i cant do anytginh for the project this xmas season. im coding for physics, as i got stuck mid december and need to catch up a bit. when looking at code all day i dont have thenerve to do thisafterwards. -- sorry this will have to stay in hibernation for quite a while.

#### jamespetts

That's rather a shame - best wishes with your physics, and I shall look forward to seeing this flourish one day!

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### Milko

#27
Hello

I have updated the generator of pak128exp, I added the generation of housing created by Fabio.

It seems that the forum does not allow you to download files that are attached directly to the post, does anyone know what is the section where I can report this anomaly?

Giuseppe

#### jamespetts

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

Hello

Giuseppe

#### jamespetts

Hmm - that file seems to contain pak128.bat and nothing else...

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### Milko

Hello

In windows, using Pak128.bat you may make pak128exp.
In the zip there is only the file Pak128.bat.

I do this step and I obtain pak128exp:
0) place pak128.bat in a folder (example .\generator\)
1) place makeobj (exp) and required file in the folder .\generator\
2) make a folder pak128dat (.\generator\pak128dat\)
3) unzip sdog's pak128 source in folder pak128dat
4) make a new folder pak128exp (.\generator\pak128exp\)
5) in a windows command prompt go to folder .\generator\
6) in the windows command prompt type "pak128 pak128exp pak128dat" and press enter
7) wait some time and in .\generator\pak128exp you will find the pak128exp (as a nightly)

Some time ago I make a similar file to build pak128brit exp....

Giuseppe

#### VS

Standard now includes fine control of electricity consumption/production, which clashes with Exp's electricity_proportion. Watch out for the industry commit series around this date, you might want to change the numbers.

My projects... Tools for messing with Simutrans graphics. Graphic archive - templates and some other stuff for painters. Development logs for most recent information on what is going on. And of course pak128!

#### jamespetts

Quote from: VS on January 07, 2012, 06:31:32 PM
Standard now includes fine control of electricity consumption/production, which clashes with Exp's electricity_proportion. Watch out for the industry commit series around this date, you might want to change the numbers.

It does not strictly clash - electricity_proportion is retained for backwards compatibility, but gives way to the newer settings in Standard if they are specified.

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### Milko

Hello

This seemed like a good project, it is sad to see it stopped.

Giuseppe

#### sdog

I also lost most of the work i've done so far, when my notebook-computer was stolen last May.

#### greenling

Sdog
oh that´s very hard to have no notebook-computer.
Opening hours 20:00 - 23:00
(In Night from friday on saturday and saturday on sunday it possibly that i be keep longer in Forum.)
I am The Assistant from Pakfilearcheologist!
Working on a big Problem!

#### jamespetts

Quote from: sdog on August 23, 2012, 08:23:30 PM
I also lost most of the work i've done so far, when my notebook-computer was stolen last May.

That's very sad indeed. Not much consolation now, I know, but there's much to be said for, in future, using Github to back these things up.

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### sdog

i wasn't pushing it, since it was too incomplete, that was mostly working on filling out the extensive tables. Now i'm pushing much more incomplete things (which also has its downsides).

On the good side, i did not loose any of my physics work, since i had everything either synced or pushed to my own git server.

Greenling and James, thank you for your consolation. I'm mostly over the loss of the computer now, since i got a nice new one. I still miss the old one for the memories attached to it, bought in japan, took it to every place i went... but what really hurts now is loosing my camera, which was in the computer bag. It appears the lens i had on it quadrupled in price since i bought it :-(

contre-jour by knehcsg, on Flickr

#### jamespetts

Oh that's very sad indeed. My sympathies indeed. Might I recommend Micro Four Thirds if you're after a replacement?

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.

#### sdog

I've got a digital slr already. The lack or electronic viewfinder was what discouraged me from going to micro four thirds.

The camaera lost was an analogue one (Nikon FG + Nikkor-O 35 F1:2), and i intend to replace it either exactly  or by a Minolta XD with a fast 35 mm. I rather love wide angle, and film, is with the larger "sensor size" much easier than anything digital i am willing to pay (that is the equivalent of a thousand rolls of film exposed, developed, and scanned).

You were an olympus SLR user, before you went digital with four-thirds?

#### jamespetts

Ohh, I see, a film camera? Goodness - even harder to replace.

No, I used old Canon FD equipment in film days; I then spent a while with Canon mid and high-end compacts (the G10) before finally getting a digital system camera in the form of the Olympus E-P3.

Want to help with development? See here for things to do for coding, and here for information on how to make graphics/objects.