mod backpack_ui;
mod ui_head_state;

use crate::{
    GameState,
    heads::{HEAD_COUNT, HeadState},
};
use bevy::prelude::*;

pub use backpack_ui::BackpackAction;
pub use ui_head_state::UiHeadState;

#[derive(Resource, Default)]
pub struct Backpack {
    pub heads: Vec<HeadState>,
}

#[derive(Event)]
pub struct BackbackSwapEvent(pub usize);

pub fn plugin(app: &mut App) {
    app.add_plugins(backpack_ui::plugin);

    app.add_systems(OnEnter(GameState::Playing), setup);
}

fn setup(mut commands: Commands) {
    commands.insert_resource(Backpack {
        heads: (0usize..HEAD_COUNT)
            .map(|i| HeadState::new(i, 10))
            .collect(),
    });
}