Crate rs_ecs

A reasonably simple entity component system (ECS).

The design is based on hecs but it is not thread-safe and has a significantly reduced API surface.

Example

let mut world = World::new();

let entity = world.alloc();
world.insert(entity, (42_u32, true));

let entity = world.alloc();
world.insert(entity, (23_u32, "hello".to_string()));

for number in Query::<&u32>::new().borrow(&world).iter() {
    println!("{}", number);
}

for (_entity, number, string) in Query::<(&Entity, &u32, &String)>::new().borrow(&world).iter() {
    println!("{}, {}", string, number);
}

Structs

Comp	An immutable borrow of a component.
CompMut	A mutable borrow of a component.
Entity	An opaque entity identifier.
Query	Query to get an iterator over all entities with a certain combination of components.
QueryIter	Used to iterate through the entities which match a certain Query.
QueryMap	Provides random access to the entities which match a certain Query.
QueryRef	Borrow of the World for a Query. Required to obtain an iterator.
Res	An immutable borrow of a resource.
ResMut	A mutable borrow of a resource.
Resources	A type map for holding resources.
With	A query specification to iterate over entities with a certain component, but without borrowing that component.
Without	A query specification to iterate over entities without a certain component.
World	The ECS world storing Entities and components.

Traits

QuerySpec

Type level specification of a query for a certain set of components.