#pragma once
#include<array>
using std::array;
#include<utility>
using std::pair;

constexpr auto infile = "Day13Input.txt";
constexpr auto track_size = 150;

namespace Day13 {
    enum Track {
        None = 0,
        Vert = 1,
        Flat = 2,
        Cross = 3,
        Hack = 4,
        Slash = 5,
    };

    enum Dir {
        Up = 0,
        Right = 1,
        Down = 2,
        Left = 3,
    };

    enum Turn {
        LeftTurn = -1,
        Straight = 0,
        RightTurn = 1,
    };

    class Cart {
    private:
        Dir _dir;
        Turn _turn_dir;

        void derail ( ) const;
        void turn ( const Track t );
        pair<int, int> dest ( ) const;
        Track lookup_dest ( const pair<int, int> ) const;

    public:
        static array<array<Track, track_size>, track_size> tracks;
        int _x, _y;
        Cart ( int x, int y, Dir dir ) : _x ( x ), _y ( y ), _dir ( dir ), _turn_dir ( Turn::LeftTurn ) { };

        int move ( );

        bool operator<( const Cart& rhs ) const;
        bool operator==( const Cart& rhs ) const;
        bool operator>( const Cart& rhs ) const;
    };
}