Add new example with a custom node event

Cargo.toml

@@ -68,6 +68,10 @@ path = "examples/full.rs"
 name = "ingame"
 path = "examples/ingame.rs"
 
+[[example]]
+name = "custom_node_event"
+path = "examples/custom_node_event.rs"
+
 [lib]
 name = "bevy_talks"
 path = "src/lib.rs"

examples/custom_node_event.rs

@@ -0,0 +1,75 @@
+//! Example to show how to add an event emitter component to a node to define custom nodes.
+use std::vec;
+
+use bevy::prelude::*;
+use bevy_talks::prelude::*;
+
+#[derive(Component, Reflect, NodeEventEmitter, Default)]
+#[reflect(Component)]
+struct DanceStart {
+    pub moves: Vec<String>,
+}
+
+fn main() {
+    App::new()
+        .add_plugins((DefaultPlugins, TalksPlugin))
+        .register_node_event::<DanceStart, DanceStartEvent>()
+        .add_systems(Startup, setup_talk)
+        .add_systems(
+            Update,
+            (
+                interact,
+                print_text,
+                react_to_dancing,
+                bevy::window::close_on_esc,
+            ),
+        )
+        .run();
+}
+
+/// Spawn the dialogue graph using the builder.
+fn setup_talk(mut commands: Commands) {
+    commands.spawn_talk(
+        Talk::builder()
+            .say("Oh lord he dancing")
+            .add_component(DanceStart {
+                moves: vec![
+                    "dabs".to_string(),
+                    "whips".to_string(),
+                    "trips and fall".to_string(),
+                ],
+            }),
+    );
+
+    println!("-----------------------------------------");
+    println!("Press space to advance the conversation.");
+    println!("-----------------------------------------");
+}
+
+/// Advance the talk when the space key is pressed.
+fn interact(
+    input: Res<Input<KeyCode>>,
+    mut next_action_events: EventWriter<NextNodeRequest>,
+    talks: Query<Entity, With<Talk>>,
+) {
+    if input.just_pressed(KeyCode::Space) {
+        next_action_events.send(NextNodeRequest::new(talks.single()));
+    }
+}
+
+fn print_text(mut text_events: EventReader<TextNodeEvent>) {
+    for txt_ev in text_events.read() {
+        let mut speaker = "Narrator";
+        if !txt_ev.actors.is_empty() {
+            speaker = &txt_ev.actors[0];
+        }
+
+        println!("{speaker}: {}", txt_ev.text);
+    }
+}
+
+fn react_to_dancing(mut dance_events: EventReader<DanceStartEvent>) {
+    for dance in dance_events.read() {
+        println!("He: {:?}", dance.moves);
+    }
+}