use bevy::prelude::*;

use crate::state::AppState;

pub mod components;
pub mod input;
pub mod kinematic;
pub mod orbit;

pub struct MovementPlugin;

impl Plugin for MovementPlugin {
    fn build(&self, app: &mut App) {
        app.add_event::<input::MoveOrderEvent>()
            // Orbital motion is scene-wide (used by the galaxy inspection scene
            // too), so it runs in every state.
            .add_systems(Update, orbit::update_orbits)
            // Flight steering chain: order → track approach → steer → integrate.
            // Gated to InGame — these only do something while entities with the
            // flight-physics components exist. Right-click input additionally
            // requires the player to be in flight, not docked.
            .add_systems(
                Update,
                (
                    input::right_click_to_move.run_if(input::when_in_flight),
                    kinematic::track_approach_target,
                    kinematic::steer_to_target,
                    kinematic::integrate_velocity,
                )
                    .chain()
                    .run_if(in_state(AppState::InGame)),
            );
    }
}