Mouse Picking and Mesh2d not working

[keithsharp]

I am trying to get mouse interactions with a Mesh2d using picking.

As a test case I'm spawning an entity with a Mesh2d, a MeshMaterial2d, and a Name component. I then add an observer that should trigger on a Pointer<Click> event and print the Name component of the target entity to the console.

When I run my app and click on the mesh nothing happens. I've been looking at the examples and I can't see what I'm doing differently, could someone show me my mistake?

I'm using Bevy 0.16.0, full code:

use bevy::color::palettes::css::YELLOW;
use bevy::prelude::*;

fn main() {
    let mut app = App::new();
    app.add_plugins(DefaultPlugins);
    app.add_systems(Startup, setup);
    app.run();
}

fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<ColorMaterial>>,
) {
    let mesh = meshes.add(Circle::new(50.0));
    let material = materials.add(Color::Srgba(YELLOW));

    commands
        .spawn((
            Name::new("My Circle"),
            Mesh2d(mesh),
            MeshMaterial2d(material),
            Pickable::default(),
        ))
        .observe(click_observer);

    commands.spawn(Camera2d);
}

fn click_observer(interaction: Trigger<Pointer<Click>>, query: Query<&Name>) {
    let Ok(name) = query.get(interaction.target()) else {
        debug!("failed to get Name component for {}", interaction.target());
        return;
    };
    debug!("Clicked on: {}", name);
}

[akimakinai]

Mesh picking plugin is not part of the default plugins, so you need to add the plugin yourself.

bevy/examples/picking/mesh_picking.rs

Lines 28 to 29 in e9418b3

	// MeshPickingPlugin is not a default plugin
	.add_plugins((DefaultPlugins, MeshPickingPlugin))

[keithsharp]

Thanks, the missing MeshPickingPlugin was indeed my problem.

I was basing my testing on the sprite_picking.rs example. It seems that the SpritePickingPlugin is included by DefaultPlugins unlike MeshPickingPlugin, so I wrongly assumed the necessary plugins were all bundled.