Skip to main content

SystemBuffer

bevy_ecs::system

Trait SystemBuffer 

Source 
pub trait SystemBuffer:
    FromWorld
    + Send
    + 'static {
    // Required method
    fn queue(&mut self, _system_meta: &SystemMeta, _world: DeferredWorld<'_>);

    // Provided method
    fn apply(&mut self, system_meta: &SystemMeta, world: &mut World) { ... }
}
Expand description

Types that can be used with Deferred<T> in systems. This allows storing system-local data which is used to defer World mutations.

Types that implement SystemBuffer should take care to perform as many computations up-front as possible. Buffers cannot be applied in parallel, so you should try to minimize the time spent in SystemBuffer::apply.

Required Methods§

Source

fn queue(&mut self, _system_meta: &SystemMeta, _world: DeferredWorld<'_>)

Queues any deferred mutations to be applied at the next ApplyDeferred.

To queue structural changes to DeferredWorld, a command queue of the DeferredWorld should be used via commands.

Provided Methods§

Source

fn apply(&mut self, system_meta: &SystemMeta, world: &mut World)

Applies any deferred mutations to the World.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§