FOnline Engine

Engine currently in unusable state due to heavy refactoring.
Estimated finishing date is middle of this year.

Goal

Friendly engine for fallout-like isometric games for develop/play alone or with friends.

Features

• Open Source under MIT license
• OpenGL/ES/WebGL and DirectX (wip) rendering
• C++17, AngelScript, C#/Mono and Fallout Star-Trek as scripting languages (wip)
• Target platforms
  • Windows
  • Linux
  • macOS
  • iOS
  • Android
  • Web
  • PS4 (wip)
• Online and singleplayer (wip) modes
• Supporting of Fallout 1/2/Tactics, Arcanum and other isometric games asset formats
• Supporting of 3d characters in modern graphic formats
• Hexagonal/square map tiling

Media

Simplest way is:

• Ask google about “fonline” in images
• Or ask google about “fonline” in videos
• Or ask google about “fonline” in common

And two videos to who don’t like to google:

Work in progress

Bugs, performance cases and feature requests see at Issues page.

Some major issues (that I work currently)

• Code refactoring (see separate section below)
• C++ as native scripting language with additional optional submodules for AngelScript, C# and Fallout Star-Trek SL
• Multifunctional editor
• YAML imprving as main formal for all text assets
• Singleplayer mode
• Documentation

Some minor issues

• Direct X rendering
• Supporting of UDP
• Exclude FBX SDK from dependencies
• Parallelism where it needed
• Steam integration

Code refactoring plans

• Move errors handling model from error code based to exception based
• Eliminate singletons, statics, global functions
• Preprocessor defines to constants and enums
• Eliminate raw pointers, use only smart
• Hide implementation details from headers using abstraction
• Fix all warnings from PVS Studio and other static analyzer tools
• Improve more unit tests and gain code coverage to at least 80%
• Improve more new C++ features like std::array, std::filesystem, std::string_view and etc
• Eliminate all preprocessor defines related to FONLINE_* (CLIENT, SERVER, EDITOR)
• In general decrease platform specific code to minimum (we can leave this work to portable C++ or SDL)
• Use more ‘auto’ keyword and replace ‘simple for’ on ‘new foreach’ (where it’s possible)

Repository structure

• BuildScripts - scripts for automatical build in command line or any ci/cd system
• Resources - resources for build applications but not related to code
• SdkPlaceholder - all this stuff merged with build output in resulted sdk zip
• Source - fonline engine specific code
• ThirdParty - external dependencies of engine, included to repository

Clone / Build / Setup

You can build project by sh/bat script or directly use CMake generator.
In any way first you must install CMake version equal or higher then 3.6.3.
Information about build scripts you can find at BuildScripts/README.md.
All output binaries you can find in Build/Binaries directory.

Third-party packages

• ACM by Abel - sound file format reader
• AngelScript - scripting language
• Asio - networking library
• Assimp - 3d models/animations loading library
• backward-cpp - stacktrace obtaining
• Catch2 - test framework
• GLEW - library for binding opengl stuff
• glslang - glsl shaders front-end
• Json - json parser
• diStorm3 - library for low level function call hooks
• PNG - png image loader
• rapidyaml - YAML parser
• SDL2 - low level access to audio, input and graphics
• SHA1 by Steve Reid - hash generator
• SHA2 by Olivier Gay - hash generator
• SPIRV-Cross - spir-v shaders to other shader languages converter
• Theora - video library
• Vorbis - audio library
• cURL - transferring data via different network protocols
• FBX SDK - fbx file format loader
• {fmt} - strings formatting library
• Dear ImGui - gui library
• libbson - bson stuff
• MongoC Driver - mongo db driver
• Mono - c# scripting library
• libogg - audio library
• openssl - library for network transport security
• unqlite - nosql database engine
• websocketpp - websocket asio extension
• zlib - compression library

Help and support

• Site: fonline.ru
• GitHub: github.com/cvet/fonline
• E-Mail: cvet@tut.by
• Forums: fodev.net
• Discord: invite