mazeconstants.h

/************************************************************************
 *
 * Copyright (C) 2017 by Peter Harrison. www.micromouseonline.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without l> imitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 ************************************************************************/

#ifndef MAZE_MAZECONSTANTS_H
#define MAZE_MAZECONSTANTS_H

#include <cstdint>

const uint16_t MAX_COST = UINT16_MAX;

#define NORTH (uint8_t)0x00
#define EAST (uint8_t)0x01
#define SOUTH (uint8_t)0x02
#define WEST (uint8_t)0x03
#define INVALID_DIRECTION (uint8_t)0xFF

enum {
  DIR_N = 0,
  DIR_NE = 1,
  DIR_E = 2,
  DIR_SE = 3,
  DIR_S = 4,
  DIR_SW = 5,
  DIR_W = 6,
  DIR_NW = 7,
};

#define WALL_PRESENT 0x01

const uint8_t OPEN_MAZE = 0;
const uint8_t CLOSED_MAZE = 4;

#define WALL_NORTH (WALL_PRESENT << (NORTH))
#define WALL_EAST (WALL_PRESENT << (EAST))
#define WALL_SOUTH (WALL_PRESENT << (SOUTH))
#define WALL_WEST (WALL_PRESENT << (WEST))

#endif  // MAZE_MAZECONSTANTS_H