TinyECS

Another Entity-Component-System, written in Rust.

• simple components createion:

struct Position {
    x : i32,
    y : i32,
    z : i32
}
impl Component for Position {}

• simple entities creation:

let mut entity_manager = world.entity_manager();
let entity = entity_manager.create_entity();

entity.add_component(Position {x : 0, y : 0, z : 0});
entity.add_component(Velocity {x : 1});
entity.refresh();

• simple macro for systems creation:

process_entities!((MoveSystem): |pos: Position, vel: Velocity| => {
    pos.x += vel.x;
    println!("Moving! position: {}, velocity: {}", pos.x, vel.x);
});

• or without macroses:

pub struct MoverSystem;
impl System for MoverSystem {
    fn aspect(&self) -> Aspect {
        aspect_all![Position, Dead]
    }

    fn process_one(&mut self, entity : &mut Entity) {
        let mut pos = entity.get_component::<Position>();
        let vel     = entity.get_component::<Velocity>(); // no problems with multiple mutable components

        pos.pos.x += vel.x;
    }
}

More examples in /examples folder :)