Struct bones_lib::ecs::prelude::ResMutInit

pub struct ResMutInit<'a, T>(/* private fields */)
where
    T: HasSchema + FromWorld;

SystemParam for getting mutable access to a resource and initializing it if it doesn’t already exist.

Use ResMut if you don’t want to automatically initialize the resource.

Trait Implementations

impl<'a, T> Deref for ResMutInit<'a, T>

where T: HasSchema + FromWorld,

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &<ResMutInit<'a, T> as Deref>::Target

Dereferences the value.

impl<'a, T> DerefMut for ResMutInit<'a, T>

where T: HasSchema + FromWorld,

fn deref_mut(&mut self) -> &mut <ResMutInit<'a, T> as Deref>::Target

Mutably dereferences the value.

impl<'a, T> SystemParam for ResMutInit<'a, T>

where T: HasSchema + FromWorld,

type State = AtomicResource<T>

The intermediate state for the parameter, that may be extracted from the world.

type Param<'p> = ResMutInit<'p, T>

The type of the parameter, ranging over the lifetime of the intermediate state.

fn get_state(world: &World) -> <ResMutInit<'a, T> as SystemParam>::State

This is called to produce the intermediate state of the system parameter.

fn borrow<'s>( _world: &'s World, state: &'s mut <ResMutInit<'a, T> as SystemParam>::State, ) -> <ResMutInit<'a, T> as SystemParam>::Param<'s>

This is used create an instance of the system parame, possibly borrowed from the intermediate parameter state.