System Architecture

During the development process we wanted to avoid using third party libraries wherever possible, with the only possible exception being the editor UI. A full dependency graph is below, with external libraries highlighted in red.

For a more legible view of the engine, we’ve also provided a full list of internal and external libraries and executables.

Engine Libraries	Use
Dagmar::Log	Handles multiple logging levels to various output streams
Dagmar::Filesystem	Utility library for tracking various important disk locations
Dagmar::PlatformDetector	Utility library for basic platform reflection
Dagmar::Renderer	Contains wrapper classes for buffers, shaders, cameras, etc.
Dagmar::Exceptions	Provides custom exceptions for an easier debugging experience
Dagmar::Allocator	Handles some memory allocation and management
Dagmar::ModuleLifecycle	Ensures the safe startup and shutdown of singletons
Dagmar::Resources	Handles the serialisation, parsing and storage of resources
Dagmar::EngineConfig	Parses and stores engine configurations provided by the user
Dagmar::ECS	Entity component system which manages entities in a DOD fashion
Dagmar::UI	Contains managers for the window, I/O, and fonts
Dagmar::Graphics	Wrappers for meshes, textures, descriptors, etc.
Dagmar::Components	Components used in our ECS for attachment to entities
Dagmar::Systems	Systems used in our ECS, e.g. Physics, Rendering, Lighting, etc.
Dagmar::Scene	Handles the scene graph, and all operations on it
Dagmar::Time	Tracks various time metrics, both relative and absolute
Dagmar::Layers	Handles the dispatching of I/O events, as well as UI rendering order
Dagmar::Application	Provides an interface for applications to use the engine
Dagmar::Voxel	Manages voxel structures, mesh generations, etc.
Dagmar::Profiler	Tracks memory and CPU usage of the system
Dagmar::Engine	Links all previous libraries into one interface

Common Libraries	Use
Dagmar::Common::Layers	Contains the game layer which is used in both our apps
Dagmar::Compiler	Used to compile the game from the editor

Editor Libraries	Use
Dagmar::Editor::Layers	Layers used solely by the editor
Dagmar::Editor::ResourceLoader	Loads resources solely required by the editor at startup
Dagmar::Editor::Application	Wraps the whole editor application
Dagmar::Editor	Main function entry point

Game Libraries	Use
Dagmar::Game::Layers	Layers used solely by the game
Dagmar::Game::ResourceLoader	Loads resources required by the game
Dagmar::Game::Application	Wraps the whole game application
Dagmar::Game	Main function entry point