Crate ecs_tiny 

ecs-tiny

A minimal ECS supporting entity and component insertion/removal, association, and single-type iteration.

Usages

// Define an component:

#[repr(C)]
#[derive(Debug, Clone, Copy, PartialEq, Eq, bytemuck::Pod, bytemuck::Zeroable)]
pub struct ComponentA(i32);
impl ecs_tiny::Component for ComponentA {}

// Create new ecs instance and inserts new entity:

let mut world = ecs_tiny::World::new();
 
let entity_key0 = world.insert_entity();
let entity_key1 = world.insert_entity();

// Inserts new component associated with specified entity:
 
assert_eq!(world.insert_component(entity_key0, ComponentA(42)), Some(()));
assert_eq!(world.insert_component(entity_key1, ComponentA(63)), Some(()));
 
// Iterates over all components of specified type (single type only):
 
for ComponentA(value) in world.iter_component_mut::<ComponentA>() {
    *value += 1;
}
 
// Removes specified component:
 
world.remove_component::<ComponentA>(entity_key0).unwrap();
 
// Removes specified entity:
 
world.remove_entity(entity_key1).unwrap();

Structs

EntityKey

World

A minimal ECS supporting entity and component insertion/removal, association, and single-type iteration.

Traits

Component