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mirror of https://github.com/MaSzyna-EU07/maszyna.git synced 2026-10-17 01:39:20 +02:00
pawelw 51521a135a Text displays: accept characters above 127, in windows-1250 or utf-8 (#198)
* Text displays: accept characters above 127, in windows-1250 or utf-8

A text display (sub-model of type "text") looks up the sub-model of each character
in a 256 entry table, and indexed it with a plain char. With char being signed, any
character above 127 gave a negative index: reading the text went outside the table,
and so did filling the table if a character sub-model had such a name. In effect the
displays could only show ASCII, and a text with national characters could crash.

The lookup is now keyed by unicode code point. Both the displayed text and the names
of the character sub-models are decoded as utf-8 if they are valid utf-8, and as
windows-1250 otherwise, so legacy (ansi) sceneries and models work next to utf-8
ones, and the two can be mixed. A short ansi text can be valid utf-8 by accident
(two upper case accented letters in a row will do); when both readings are possible
the one which finds more of its characters in the model is used.

The rest is unchanged: the first character of the text still isn't displayed, the
characters are still drawn in the translucent pass only. A missing text pointer no
longer gets dereferenced.

* Text displays: prepare the characters once for each text

The sequence of character sub-models was cached for the last text only, so
displays of several instances drawn in turn decoded their texts again on
every draw. It is now kept for each text the display shows; the texts of the
instances don't change, so a draw costs a single lookup.

Also the comments added in the renderers are now in English.

* Text displays: move the text decoding to utilities

utf8_to_utf32() and win1250_to_utf32(), with the windows-1250 table, now sit
next to win1250_to_utf8(). The existing function maps only the Polish letters
and passes other bytes above 127 through, so it can't serve the displays.

* Text displays: address the SonarCloud findings

std::array instead of the C-style arrays, the utf-8 sequence length worked
out in a function of its own instead of nested conditional operators,
std::byte for the bit operations, std::ranges::count_if and contains().
The character loop of the renderers moved to Render_Alpha_text(), which
takes the nesting back to the limit, and the static pasText is accessed
through the class.
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MaSzyna - Railway vehicle simulator

Website · Report an issue · Community Discord · MaSzyna on Steam · MaSzyna on Epic Games Store

Discord Github Actions Quality gate Sonar cloud violations License: MPL 2.0 Last commit Open issues Pull requests GitHub stars GitHub forks C++ Windows Linux OpenGL

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%