ArcEngine

ArcEngine is a entity component system (ECS) game engine for creating 2D games. It is written in C++11 and requires EntityX and SFML 2.

Features

Stack State Machine.

Entity Component System (EntityX).

Resource Management with XML parsing (tinyXML2).

Input Management with control mapping.

Scene Graph System, Rendering System, and other core Systems.

Why?

With the advent of modern C++, writing game logic can be just as pleasant (and simple) as using a scripting language. I created this project to provide a 'hopefully' minimal core feature set for creating complex 2D games.

How?

1. Clone the repo.
2. Configure your project's build system to link to EntityX and SFML 2.3.
3. Create (or modify) a game state, which inherits the State class.
4. Add your game logic to the State callbacks: onHandleEvent, onUpdate, onDraw and others.

Example

The following snippet shows the creation of two entities. Both parent 'e' and child 'c' will be rendered in the scene.

MainMenuState::MainMenuState(Arc::Context context)
: State(context)
{
	auto e = getEntityManager().create();
	e.assign<CNode>(100, 100);
	e.assign<CRenderSprite>(sf::Sprite(mContext.resources->getTexture("MyTextureID")));

	auto c = getEntityManager().create();
	c.assign<CNode>();
	e.assign<CRenderCirc>(sf::CircleShape(100));
	e.component<CNode>()->addChild(c);

	addToLayer(State::Layers::FOREGROUND, e);
}

Create the engine and push your first state! 'main.cpp'

try
{
    Arc::Engine game;
    game.pushState<MainMenuState>();
    game.run();
}
catch(std::exception& e)
{
    std::cout << "\nFatal Exception: " << e.what() << std::endl;
    return -1;
}