Trainsim.Com - Open Rails Modeling and Physics https://trainsim.com/forums/ Discussion for Open Rails developers en Sat, 11 Jul 2026 04:57:30 GMT vBulletin 60 https://trainsim.com/forums/images/misc/rss.png Trainsim.Com - Open Rails Modeling and Physics https://trainsim.com/forums/ Generic Sound Templates BETA https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348648-generic-sound-templates-beta Wed, 01 Jul 2026 07:09:48 GMT Hello. In collaboration with Peter Newell of the Coals to Newcastle site, I have prepared some generic steam locomotive sound templates (generally...
This pack uses two "base" *.sms files for locomotives (one for the external view and one for the cab view) and two tender *.sms files (one for four-axle tenders and one for six axle tenders). Also included are *.inc files that contain alternate blocks of code to provide for common variations in locomotive features.

Also included is a *.pdf guide which not only contains instructions on how to use the files, but also some insights and recommended practices based on current ORTS standards -- such as replacing older, poor-quality MSTS-era sounds with newer sounds, and how to correct some common flaws I've often seen in some *.sms files over the years.

The BETA version of this package can be found here. Please note that although these templates are currently only for steam locomotives, Peter and I plan to make similar templates and guides for other forms of rolling stock, including Diesels, Electric, Freight and Passenger.

Any comments on this version of the package -- such as revisions to the guide or any bugs found in the *.sms and *.inc files, are greatly appreciated!

This thread has been cross-posted to Elvas Tower.]]> Open Rails Modeling and Physics Traindude https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348648-generic-sound-templates-beta gltf + PBR models are not responding to light: My Fault? https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348480-gltf-pbr-models-are-not-responding-to-light-my-fault Mon, 29 Jun 2026 03:22:40 GMT Model used in the picture: https://www.cgtrader.com/free-3d-models/vehicle/other/train-carriage-c7ca0bd9-5145-4bf4-ac5e-8224a065ceea Coming to... Open Rails 2026-06-29 08-29-52.pngModel used in the picture: https://www.cgtrader.com/free-3d-mod...e-8224a065ceea

#NOTE
The license for the model says " Remixing: Cannot modify, adapt, or combine with other assets." I have no idea if exporting the model as gltf for use in ORTS counts as "modification", as I am not modifying the mesh OR the associated textures. To be safe, I won't be uploading the files here...
Coming to the main issue. This model completely uses PBR materials. I opened the model in blender, adjusted some parts, separated the wheels and bogies, named them according to standard MSTS conventions, and exported to glb. I then created a wag file and tried to load it in ORTS. It loaded, however, it does not respond to light sources. It looks bright during the day though. I can also see *some* PBR effects during the night. But barely anything during the day.
Also, one more quirk is that the wheels don't revolve.
Am I doing something wrong? Or it is the current development stage rn?

P.S. Model used in the picture is only for testing the territory of gltf and PBR. Neither I would be using it nor any plans of distribution.]]> Open Rails Modeling and Physics TrainGuy6550 https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348480-gltf-pbr-models-are-not-responding-to-light-my-fault Need help with .dds alphas in TrainSimulations SP Shasta SD-70 locomotives https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348240-need-help-with-dds-alphas-in-trainsimulations-sp-shasta-sd-70-locomotives Thu, 25 Jun 2026 00:16:21 GMT Open Rails Modeling and Physics wwhall https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348240-need-help-with-dds-alphas-in-trainsimulations-sp-shasta-sd-70-locomotives 3D Cab Project https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348200-3d-cab-project Tue, 23 Jun 2026 23:53:14 GMT
Open Rails 2026-06-23 06-30-53.png Open Rails 2026-06-23 06-31-11.png

]]> Open Rails Modeling and Physics Railfanner87 https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348200-3d-cab-project GLTF v/s S: Casual Questions https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348163-gltf-v-s-s-casual-questions Tue, 23 Jun 2026 09:14:08 GMT Four contestants: Uncompressed .S, Compressed .S, GLTF with PBR materials, GLTF without PBR materials Theoretically, without considering the...
Theoretically, without considering the development state of Open Rails, and without caring about piracy, which is better for:
1) Best performance
2) Best visuals
3) Balanced performance and visuals

4) Is GLTF without PBR materials better than compressed .S ? I mean I'd always like a performance boost on my crappy PC even if it's very subtle...]]> Open Rails Modeling and Physics TrainGuy6550 https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348163-gltf-v-s-s-casual-questions Pre-made rails (display base) for reference https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348025-pre-made-rails-display-base-for-reference Sat, 20 Jun 2026 04:28:14 GMT Can I somehow get the Shape Viewer display base onto blender with the same placement as in Shape Viewer? It will be a really good reference in... blender with the same placement as in Shape Viewer? It will be a really good reference in modelling the wheels correctly.]]> Open Rails Modeling and Physics TrainGuy6550 https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2348025-pre-made-rails-display-base-for-reference Decals not showing up in the exported model https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2347923-decals-not-showing-up-in-the-exported-model Thu, 18 Jun 2026 17:35:58 GMT
-> I've made sure the faces are not intersecting with the body.
In Blender, the same issue happens. But it can be fixed by turning OFF "Backface Culling".
But I don't get how to fix it in the exported .S file. The decals do not show up both in the Shape Viewer (by Paul Gausden) and the TSRE5 Trainsim Fork Shape Viewer.

Why is this happening?]]> Open Rails Modeling and Physics TrainGuy6550 https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2347923-decals-not-showing-up-in-the-exported-model Need Help: Shape file with multiple UV maps https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2347844-need-help-shape-file-with-multiple-uv-maps Wed, 17 Jun 2026 02:25:56 GMT
So suppose a cube with 6 faces (name: CUBE)
1) 3 faces of the cube are assigned Mat 1, and the other 3 are assigned Mat 2.
2) The cube is a single, stitched object with no modifications.
3) Mat 1 has its own UV Map (name: UV_1) for the cube with the 3 faces completely taking up the space of the WORKING AREA of the UV Editor (idk what's that called) and the rest of the faces are out of the WORKING AREA.
4) Mat 2 has its own UV Map (name: UV_2) for the cube's remaining 3 faces completely taking up the space of the WORKING AREA of the UV Editor and the rest of the faces (those that were major in Mat 1) are out of the WORKING AREA.

Now Mat 1 and Mat 2 are present in 2 slots for the SAME object CUBE.
I click on Mat 1, under MSTS Materials, I select the Mat_1 image texture and similarly, for Mat 2, I select the Mat_2 image texture.
I then go to the Shading tab, and select the respective UV maps for each in the UV Map node that the MSTS exporter automatically adds.

When I try to export, the exporter throws an error (maybe an info?!) that my CUBE lacks a UVMap. WTF??? I just manually assigned 2 UV Maps?

Why not just separate the objects (P -> Separate -> Selection)? Becuase it duplicates edges and makes unneeded creases.

What am I trying to do here? Trying to split the texture so that it gets a bigger surface area while keeping the model performant. 4096x4096 textures lag terribly on my computer, so I resort to 512x512, 1024x1024 and 2048x2048 max.
Is that not possible? Is there any alternative / better way of doing it?

Version of the addon I'm using: https://github.com/pwillard/Blender_...ases/tag/4.8.2
Blender: v2.93.18]]> Open Rails Modeling and Physics TrainGuy6550 https://trainsim.com/forums/forum/open-rails/open-rails-modeling-and-physics/2347844-need-help-shape-file-with-multiple-uv-maps