Commands Send Event

An extension trait for Commands that allows you to send events from a system without having to retrieve a typed EventWriter SystemParam.

• version 0.5 supports Bevy 0.8
• version 0.3 & 0.4 support Bevy 0.7
• versions <0.3 support Bevy 0.6

Limitations

• Events won't be dispatched immediately, but at the next Stage boundary when the queued commands are applied to the World.

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Usage

Add to your Cargo.toml [dependencies] section commands_send_event = "0.5"

then the send_event method is available on Commands:

```rust use commandssendevent::CommandsSendEvent;

[derive(Component)]

struct MyEventA(String);

[derive(Component)]

struct MyEventB(i32);

fn sender( mut commands: Commands ) { commands.sendevent(MyEventA("Hello, World")); commands.sendevent(MyEventB(42)); } The /examples folder has two examples you can run with: cargo run --example basic_usage cargo run --example schedule ```

0.2 update

Now there is also AnyEventWriter:

```rust use commandssendevent::AnyEventWriter;

[derive(Component)]

struct MyEventA(String);

[derive(Component)]

struct MyEventB(i32);

fn sender( mut eventwriter: AnyEventWriter, ) { eventwriter.send(MyEventA("Hello, World")); event_writer.send(MyEventB(42)); } ```

AnyEventWriter is a facade over Commands that implements SystemParam.

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Note

This crate is a bit redundant now as in 0.8 sending events using World is very easy. With commands.add you can queue a closure like so: rust commands.add(|world: &mut World| world.send_event(MyEvent) );