track_type.h

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#ifndef TRACK_TYPE_H
#define TRACK_TYPE_H
 
#include "core/enum_type.hpp"

enum class Track : uint8_t {
  Begin = 0, 
  X = 0, 
  Y = 1, 
  Upper = 2, 
  Lower = 3, 
  Left = 4, 
  Right = 5, 
  End, 
 
  Wormhole = 6, 
  Depot = 7, 
 
  Invalid = 0xFF, 
};

template <typename T>
using TrackIndexArray = EnumIndexArray<T, Track, Track::End>;

using TrackBits = EnumBitSet<Track, uint8_t>;
 
static constexpr TrackBits TRACK_BIT_CROSS = {Track::X, Track::Y}; 
static constexpr TrackBits TRACK_BIT_HORZ = {Track::Upper, Track::Lower}; 
static constexpr TrackBits TRACK_BIT_VERT = {Track::Left, Track::Right}; 
static constexpr TrackBits TRACK_BIT_3WAY_NE = {Track::X, Track::Upper, Track::Right}; 
static constexpr TrackBits TRACK_BIT_3WAY_SE = {Track::Y, Track::Lower, Track::Right}; 
static constexpr TrackBits TRACK_BIT_3WAY_SW = {Track::X, Track::Lower, Track::Left}; 
static constexpr TrackBits TRACK_BIT_3WAY_NW = {Track::Y, Track::Upper, Track::Left}; 
static constexpr TrackBits TRACK_BIT_ALL = {Track::X, Track::Y, Track::Upper, Track::Lower, Track::Left, Track::Right}; 

enum class Trackdir : uint8_t {
  X_NE = 0, 
  Y_SE = 1, 
  Upper_E = 2, 
  Lower_E = 3, 
  Left_S = 4, 
  Right_S = 5, 
  RvRev_NE = 6, 
  RvRev_SE = 7, 
  X_SW = 8, 
  Y_NW = 9, 
  Upper_W = 10, 
  Lower_W = 11, 
  Left_N = 12, 
  Right_N = 13, 
  RvRev_SW = 14, 
  RvRev_NW = 15, 
 
  End, 
  Invalid = 0xFF, 
};

template <typename T>
using TrackdirIndexArray = EnumIndexArray<T, Trackdir, Trackdir::End>;

using TrackdirBits = EnumBitSet<Trackdir, uint16_t>;

static constexpr TrackdirBits TRACKDIR_BIT_MASK{
  Trackdir::X_NE, Trackdir::Y_SE, Trackdir::Upper_E, Trackdir::Lower_E, Trackdir::Left_S, Trackdir::Right_S,
  Trackdir::X_SW, Trackdir::Y_NW, Trackdir::Upper_W, Trackdir::Lower_W, Trackdir::Left_N, Trackdir::Right_N,
};

static constexpr TrackdirBits INVALID_TRACKDIR_BIT{UINT16_MAX};

struct TrackStatus {
  TrackdirBits trackdirs; 
  TrackdirBits signals; 
};
 
#endif /* TRACK_TYPE_H */