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...
flecs::observer	flecs::world::observer (flecs::entity e) const
	Observer builder.
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

Observer builder.

observer() [2/2]

flecs::observer observer

(

flecs::entity

e

)

const

Observer builder.

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

Parameters

e	The entity.

Returns

An observer object.