Observers

Observers let applications register callbacks for ECS events. More...

Collaboration diagram for Observers:

Classes
struct	flecs::observer_builder< Components >
	Observer builder. More...
struct	flecs::observer_builder_i< Base, Components >
	Observer builder interface. More...
struct	flecs::observer
	Observer. More...
flecs::observer	flecs::world::observer (flecs::entity e) const
	Observer world mixin.
template<typename... Components, typename... Args>
flecs::observer_builder< Components... >	observer (Args &&... args) const
	Create a new observer.

Detailed Description

Observers let applications register callbacks for ECS events.

Function Documentation

observer() [1/2]

template<typename... Components, typename... Args>

flecs::observer_builder< Components... > observer ( Args &&... args ) const

related

Create a new observer.

Template Parameters

Components	The components to match on.
Args	Arguments passed to the constructor of flecs::observer_builder.

Returns

An observer builder.

observer() [2/2]

observer flecs::world::observer ( flecs::entity e ) const

inline

Observer world mixin.

Mixin implementation.

Upcast an entity to an observer. The provided entity must be an observer.

Parameters

e	The entity.

Returns

An observer object.

Definition at line 50 of file impl.hpp.