Charlie2D

A simple game engine that acts like an extension of sdl2, uses an entity-component architecture. The idea behind this project is to have a game engine with the editor being a separate piece of software (LDTK recommended).

Examples

https://ethanscharlie.itch.io/piracybutspace

https://ethanscharlie.itch.io/theyre-coming-for-my-uranium

https://ethanscharlie.itch.io/christmas-cannonade

https://ethanscharlie.itch.io/icntball-remastered

Quickstart

Init

int main() {        
    GameManager::init({1920, 1080});  
    
    // Game code      
    GameManager::doUpdateLoop();     
    return 0; 
} 

The init() must be ran first and will also set the 'original' resolution, note that this should be set once and left because changing it will change game behavior, defaults to 1920x1080 if no argument is given.

Entities

Entity& player = GameManager::createEntity("Player"); 

Entites can be created with the GameManager::createEntity method. In the instance above the Entity is given the tag "Player".

Components

Entity& background = GameManager::createEntity("Background"); 
background.addComponent<Sprite>(); 
background.getComponent<Sprite>().loadTexture("res/background.png");  

Components can be created an added (Kinda like scripts)

class Player : public Component {     
    public:     
    Player(Entity &entity) : Component(entity) {         
        entity.addComponent<Sprite>().loadTexture("res/player.png");
     }      
    void update() override {         
        Sprite& sprite = entity.getComponent<Sprite>();
        sprite.angle.lookAt(entity.box.getCenter(), 
                InputManager::getMouseWorldPosition());
     } 
}; 

The start method will run during the component initialization Update will of course run every game loop And then can be added to Entities

Entity* player = createEntity("Player"); 
player.addComponent<Player>();