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mirror of https://github.com/MaSzyna-EU07/maszyna.git synced 2026-10-17 16:49:21 +02:00
Hirek193 5a5bb15fa5 multiplayer: hold the authority's readings between updates, and hear the brakes
Two complaints, one cause underneath them.

The brake and squeal sounds came out in shreds as a train got going. Both are
shaped from UnitBrakeForce and Vel, and both of those are results of a physics
step. An update arrives ten times a second; in the twenty-odd frames between
them the local physics carries on computing its own speed and its own brake
force for a train it has no business simulating, they fall away, and the next
update snaps them back. rsBrake pitches on Vel and rsPisk gains on the brake
force ratio, so what the ear got was that sawtooth.

So the physics outputs of somebody else's train are now put back after every
local step, not only on the frame an update lands: speed, brake force, wheel
and engine revolutions, engine power, wheelslip, sand, and the running flags of
the converter and the compressors, which the local physics kept switching off
because the conditions it evaluates are not the ones the owner is evaluating.

The relays are the same problem wearing a different hat. MainCtrlActualPos - the
notch the resistors are actually on, as opposed to the one the handle is at -
was being stepped by the local automatic notching, off its own guesses, so the
clicks either fired at the wrong moment or never fired at all. It travels now,
together with ScndCtrlActualPos and StLinFlag, which stops the local notching
inventing anything, and every relay heard here is one that operated over there.

The brake unit keeps a sound bitfield of its own, and that is where the
accelerator and the cylinder venting live. Reading it clears it, so watching it
had to be done without consuming it: TBrake grows PeekSoundFlag(), and only the
flags that have just come up count as an event - the vehicle only clears them
when it has an accelerator sound to play, so a bit that stays lit is one event,
not one per frame. RaiseSoundFlag() hands them to the far end.

Snapshot version 5.
2026-09-07 09:24:47 +00:00
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2025-03-09 15:36:11 +01:00
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2026-07-25 12:59:54 +02:00
2025-03-09 15:36:11 +01:00
2026-04-19 04:15:25 +02:00
2017-10-28 19:21:37 +02:00
2025-11-16 19:00:38 +01:00
2025-09-19 17:53:46 +02:00
2026-03-14 20:51:11 +01:00
2015-04-03 21:58:35 +08:00
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2026-05-11 18:21:12 +02:00
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2025-03-09 15:36:11 +01:00
2021-02-13 18:32:19 +01:00
2019-07-09 22:09:37 +02:00

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MaSzyna - Railway vehicle simulator

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MaSzyna executable source code is licensed under the MPL 2.0 and comes with a large pack of free assets under a custom license.

Table of Contents

Getting Started

MaSzyna compiles and runs natively on Linux and Windows. Other platforms are not tested.

Heads-up
Our dev team is small; we keep improving the build process, but issues may still occur. If you get stuck, please ask on the official Discord server.

Prerequisites

For runtime requirements see Minimum Requirements.

1) Software (oldest tested in parentheses)

  • CMake (3.0)

  • make

  • A C++ compiler with C++20 support:

    • Windows: Visual Studio 2022

    • Linux: GCC (12.3.1)

Note: MinGW is currently not supported.

2) Libraries (oldest tested in parentheses)

3) Graphics API

  • OpenGL 3.0 or newer
  • DirectX 12 via NVRHI (optional, Windows only, for Better Renderer)

CMake flags

Flag Meaning
-DCMAKE_BUILD_TYPE=Debug Debug build
-DCMAKE_BUILD_TYPE=Release Release build
-DCMAKE_BUILD_TYPE=RelWithDebInfo Release build with debug symbols
-DWITH_BETTER_RENDERER=ON/OFF Enable/disable NVRHI-based renderer
-DPython3_ROOT_DIR=<path> Root of the Python 3.14 install on Windows (python.exe, Lib, DLLs) for embed/copy steps; on Linux, optional if CMake picks the wrong interpreter

Linux note: WITH_BETTER_RENDERER uses DirectX 12 through NVRHI and is not supported on Linux.

Windows

Install Python 3.14 x64 from python.org and include the optional Python native development feature (headers and .lib for embedding). Pass -DPython3_ROOT_DIR="C:\Path\To\Python314" on the cmake line when you want the layout under that directory used for embedding and for copying Lib / DLLs next to the executable.

AppVeyor CI builds with the worker image’s preinstalled Python at C:/Python314-x64 (see appveyor.yml: -DPython3_ROOT_DIR=...).

# Clone repository with submodules
git clone --recursive https://github.com/MaSzyna-EU07/maszyna.git

cd maszyna

# Init vcpkg
call setup.bat

# Create directory for CMake build files
mkdir build
cd build

# Generate CMake project (replace %CONFIG% with Debug/Release/RelWithDebInfo)
cmake .. -G "Visual Studio 17 2022" -A x64 -DCMAKE_BUILD_TYPE=%CONFIG%

# Build (replace %CONFIG% accordingly)
cmake --build . --config %CONFIG% --parallel

Linux

# Install dependencies (Fedora/RHEL family)
sudo dnf install -y \
  @development-tools \
  cmake \
  mesa-libGL-devel \
  glew-devel \
  glfw-devel \
  python3.14-devel \
  libpng-devel \
  openal-soft-devel \
  luajit-devel \
  libserialport-devel \
  libsndfile-devel \
  gcc \
  g++ \
  wayland-devel \
  wayland-protocols-devel \
  libxkbcommon-devel

# Clone repository with submodules
git clone --recursive https://github.com/MaSzyna-EU07/maszyna.git

cd maszyna

# Create directory for CMake build files
mkdir build
cd build

# Generate Makefiles (NVRHI is not supported on Linux)
cmake .. -DWITH_BETTER_RENDERER=OFF

# Compile using all cores
make -j"$(nproc)"

Tip (Ubuntu/Debian): Package names differ; install equivalent build-essential, libgl1-mesa-dev, libglew-dev, libglfw3-dev, python3.14-dev, libpng-dev, libopenal-dev, libluajit-5.1-dev, libserialport-dev, libsndfile1-dev, and Wayland/X11 dev packages as needed.

Installing

There is no make install yet. Copy the built executable to your MaSzyna installation manually.

  • Output directory: ./bin

  • File name format: eu07_YYYY-MM-DD_<commit>[_d]

    • YYYY-MM-DD – build date

    • <commit> – short commit hash

    • _d – present in Debug builds

If you already have the MaSzyna assets, copy the executable to the install dir. Assets can be downloaded from eu07.pl.

Rainsted on Linux

If Rainsted (a third‑party starter) fails to detect the executable under Linux, you can create a small wrapper script named eu07.exe:

#!/bin/sh
./eu07 "$1" "$2" "$3" "$4" "$5"

If detection still fails, padding the file (with comments) up to ~1 MB may help.

Known Issues

  • GLFW linking – On some systems you must provide the GLFW library path explicitly with -DGLFW3_LIBRARIES.

  • X11/Wayland linking order – Linking order of X11 and related libs can matter.

  • NVRHI on Linux – The NVRHI/"Better Renderer" path targets DirectX 12 and is currently unsupported on Linux.

Support

Minimum requirements

  • OS: Windows 10 64-bit
  • Processor: 2 core at least 2 GHz (e.g. Intel Core i3-2100 / AMD Athlon II X2)
  • RAM: 6 GB RAM
  • Graphics Card: supporting OpenGL 3.3 with at least 1GB VRAM
  • 150 GB of free disk space
  • Sound card supporting OpenAL with stereo
  • Optional COM ports for custom control panel setups.

License

Languages
C++ 63.5%
C 34%
HLSL 1.4%
GLSL 0.6%
CMake 0.3%
Other 0.2%