Struct rfw::ecs::Commands [−][src]
pub struct Commands<'a> { /* fields omitted */ }
Expand description
A list of commands that will be run to modify a World
Implementations
Creates a new empty entity and returns an EntityCommands builder for it.
Example
use bevy_ecs::prelude::*; fn example_system(mut commands: Commands) { // Create a new empty entity and retrieve its id. let empty_entity = commands.spawn().id(); // Create another empty entity, then add some component to it commands.spawn() // adds a new component bundle to the entity .insert_bundle((1usize, 2u32)) // adds a single component to the entity .insert("hello world"); }
Creates a new entity with the components contained in bundle
.
This returns an EntityCommands builder, which enables inserting more components and bundles using a “builder pattern”.
Note that bundle
is a Bundle, which is a collection of components. Bundle is
automatically implemented for tuples of components. You can also create your own bundle
types by deriving Bundle
.
Example
use bevy_ecs::prelude::*; struct Component1; struct Component2; #[derive(Bundle)] struct ExampleBundle { a: Component1, b: Component2, } fn example_system(mut commands: Commands) { // Create a new entity with a component bundle. commands.spawn_bundle(ExampleBundle { a: Component1, b: Component2, }); commands // Create a new entity with two components using a "tuple bundle". .spawn_bundle((Component1, Component2)) // spawn_bundle returns a builder, so you can insert more bundles like this: .insert_bundle((1usize, 2u32)) // or insert single components like this: .insert("hello world"); }
Returns an EntityCommands builder for the requested entity
.
Example
use bevy_ecs::prelude::*; fn example_system(mut commands: Commands) { // Create a new, empty entity let entity = commands.spawn().id(); commands.entity(entity) // adds a new component bundle to the entity .insert_bundle((1usize, 2u32)) // adds a single component to the entity .insert("hello world"); }
pub fn spawn_batch<I>(&mut self, bundles_iter: I) where
I: IntoIterator + Send + Sync + 'static,
<I as IntoIterator>::Item: Bundle,
pub fn spawn_batch<I>(&mut self, bundles_iter: I) where
I: IntoIterator + Send + Sync + 'static,
<I as IntoIterator>::Item: Bundle,
Equivalent to iterating bundles_iter
and calling Self::spawn
on each bundle, but
slightly more performant.
Trait Implementations
type Fetch = CommandQueue
Auto Trait Implementations
impl<'a> !RefUnwindSafe for Commands<'a>
impl<'a> !UnwindSafe for Commands<'a>
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pub fn vzip(self) -> V