[−][src]Trait async_ecs::component::Component
Abstract component type. Doesn't have to be Copy or even Clone.
Storages
Components are stored in separated collections for maximum
cache efficiency. The Storage
associated type allows
to specify which collection should be used.
Depending on how many entities have this component and how
often it is accessed, you will want different storages.
The most common ones are VecStorage
(use if almost every entity has that
component), DenseVecStorage
(if you expect many entities to have the
component) and HashMapStorage
(for very rare components).
Examples
use async_ecs::*; pub struct Position { pub x: f32, pub y: f32, } impl Component for Position { type Storage = VecStorage<Self>; }
use async_ecs::*; pub enum Light { // (Variants would have additional data) Directional, SpotLight, } impl Component for Light { type Storage = DenseVecStorage<Self>; }
use async_ecs::*; pub struct Camera { // In an ECS, the camera would not itself have a position; // you would just attach a `Position` component to the same // entity. matrix: [f32; 16], } impl Component for Camera { type Storage = HashMapStorage<Self>; }