using OpenTK.Mathematics;
using VoxelEngine.Core;
using VoxelEngine.Rendering;
using VoxelChunk = VoxelEngine.World.Chunk.Chunk;

namespace VoxelEngine.Game;

public sealed class Player
{
    private readonly Configuration _cfg;

    public Camera Camera { get; }
    public Vector3 Position => this.Camera.Position;
    public float MoveSpeed => this._cfg.MoveSpeed;
    public float MouseSensitivity => this._cfg.MouseSensitivity;

    public Vector3i ChunkPosition
    {
        get
        {
            Vector3 p = this.Position;
            return new Vector3i(
                Player.FloorDiv((int)MathF.Floor(p.X), VoxelChunk.Size),
                Player.FloorDiv((int)MathF.Floor(p.Y), VoxelChunk.Size),
                Player.FloorDiv((int)MathF.Floor(p.Z), VoxelChunk.Size));
        }
    }

    public Player(Configuration cfg, Vector3 spawnPosition, float aspectRatio)
    {
        this._cfg = cfg;
        this.Camera = new Camera(spawnPosition, aspectRatio) { Fov = cfg.Fov };
    }

    public void Move(Vector3 delta) => this.Camera.Move(delta);

    public void AddRotation(float yawDelta, float pitchDelta) => this.Camera.AddRotation(yawDelta, pitchDelta);

    private static int FloorDiv(int value, int size)
    {
        int q = value / size;
        if (value % size != 0 && value < 0) q--;
        return q;
    }
}