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mod registry;
mod slab_storage;
mod vec_storage;
use crate::slab;
use slab::RawSlab;
use slab::RawSlabKey;
use crate::entity;
use entity::EntityHandle;
pub trait ComponentStorageBase {
fn on_entity_free(&mut self, entity: &EntityHandle);
fn has_component_for_entity(&self, entity: &EntityHandle);
}
pub trait ComponentStorage<T>: Send + Sync {
fn new() -> Self;
fn allocate(&mut self, entity: &EntityHandle, data: T);
fn free(&mut self, entity: &EntityHandle);
fn free_if_exists(&mut self, entity: &EntityHandle);
fn get(&self, entity: &EntityHandle) -> Option<&T>;
fn get_mut(&mut self, entity: &EntityHandle) -> Option<&mut T>;
}
impl<T> ComponentStorageBase for T
where
T: ComponentStorage<T>,
{
fn on_entity_free(&mut self, entity: &EntityHandle) {
self.free(entity);
}
fn has_component_for_entity(&self, entity: &EntityHandle) {
self.get(entity).is_some();
}
}
pub trait Component: Sized + Send + Sync + 'static {
type Storage: ComponentStorage<Self>;
}
pub use registry::ComponentRegistry;
pub use slab_storage::SlabComponentStorage;
pub use vec_storage::VecComponentStorage;