Class QueryManager

The query manager is responsible for updating all queries when entities/components change

Hierarchy

QueryManager

Index

Constructors

Methods

addEntity createQuery getQuery maybeRemoveQuery removeComponent removeEntity

Constructors

constructor

new QueryManager(_world: World<any>): QueryManager
Parameters
- _world: World<any>
Returns QueryManager
- Defined in EntityComponentSystem/QueryManager.ts:13

Methods

addEntity

addEntity(entity: Entity): void
Adds the entity to any matching query in the query manage
Parameters
- entity: Entity
Returns void
- Defined in EntityComponentSystem/QueryManager.ts:41

createQuery

createQuery<T>(types: readonly string[]): Query<T>
Creates a populated query and returns, if the query already exists that will be returned instead of a new instance
Type Parameters
- T extends Component<string, T> = Component<string>
Parameters
- types: readonly string[]
Returns Query<T>
- Defined in EntityComponentSystem/QueryManager.ts:78

getQuery

getQuery<T>(types: readonly string[]): Query<T>
Retrieves an existing query by types if it exists otherwise returns null
Type Parameters
- T extends Component<string, T> = Component<string>
Parameters
- types: readonly string[]
Returns Query<T>
- Defined in EntityComponentSystem/QueryManager.ts:92

maybeRemoveQuery

maybeRemoveQuery(query: Query<Component<string>>): void
Removes the query if there are no observers left
Parameters
- query: Query<Component<string>>
Returns void
- Defined in EntityComponentSystem/QueryManager.ts:30

removeComponent

removeComponent(entity: Entity, component: Component<string>): void
Removes an entity from queries if the removed component disqualifies it
Parameters
- entity: Entity
- component: Component<string>
Returns void
- Defined in EntityComponentSystem/QueryManager.ts:54

removeEntity

removeEntity(entity: Entity): void
Removes an entity from all queries it is currently a part of
Parameters
- entity: Entity
Returns void
- Defined in EntityComponentSystem/QueryManager.ts:68