moria/src/camera.rs

use bevy::prelude::*;

use crate::player::*;

pub struct Camera;
pub fn camera_follow_player(
    player: Query<(&Transform, &Player), Without<Camera>>,
    mut camera: Query<(&mut Transform, &Camera), Without<Player>>,
) {
    let player_pos = if let Some(player) = player.iter().next() {
        player.0.translation
    } else {
        return;
    };

    for (mut trans, _) in camera.iter_mut() {
        trans.translation = player_pos + Vec3::new(-50.0, 100.0, 50.0);
        trans.look_at(player_pos, Vec3::Y);
    }
}