board.h

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#pragma once
 
 
#include "game.h"
#include "utils.h"
#include <assert.h>
#include <stdbool.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define WATER_TILE 0
#define FISH_TILE(fish) ((fish) > 0 ? (fish) : 0)
#define PENGUIN_TILE(player_id) ((player_id) > 0 ? -(player_id) : 0)
#define is_water_tile(tile) ((tile) == 0)
#define is_fish_tile(tile) ((tile) > 0)
#define is_penguin_tile(tile) ((tile) < 0)
#define get_tile_fish(tile) ((tile) > 0 ? (tile) : 0)
#define get_tile_player_id(tile) ((tile) < 0 ? -(tile) : 0)
 
enum TileAttribute {
  TILE_DIRTY,
  TILE_ATTR_MAX,
};
 
void setup_board(Game* game, int width, int height);
 
void generate_board_random(Game* game, Rng* rng);
void generate_board_island(Game* game, Rng* rng);
 
 
inline ALWAYS_INLINE bool is_tile_in_bounds(const Game* game, Coords coords) {
  int x = coords.x, y = coords.y;
  return 0 <= x && x < game->board_width && 0 <= y && y < game->board_height;
}
 
inline ALWAYS_INLINE bool get_tile_attr(const Game* game, Coords coords, short attr) {
  assert(is_tile_in_bounds(game, coords));
  return test_bit(game->tile_attributes[coords.x + game->board_width * coords.y], 1 << attr);
}
 
inline ALWAYS_INLINE void set_tile_attr(Game* game, Coords coords, short attr, bool value) {
  assert(is_tile_in_bounds(game, coords));
  short* ptr = &game->tile_attributes[coords.x + game->board_width * coords.y];
  *ptr = change_bit(*ptr, 1 << attr, value);
}
 
inline ALWAYS_INLINE void set_all_tiles_attr(Game* game, short attr, bool value) {
  for (int y = 0; y < game->board_height; y++) {
    for (int x = 0; x < game->board_width; x++) {
      Coords coords = { x, y };
      set_tile_attr(game, coords, attr, value);
    }
  }
}
 
inline ALWAYS_INLINE short get_tile(const Game* game, Coords coords) {
  assert(is_tile_in_bounds(game, coords));
  return game->board_grid[coords.x + game->board_width * coords.y];
}
 
inline ALWAYS_INLINE void set_tile(Game* game, Coords coords, short value) {
  assert(is_tile_in_bounds(game, coords));
  game->board_grid[coords.x + game->board_width * coords.y] = value;
  set_tile_attr(game, coords, TILE_DIRTY, true);
}
 
 
#ifdef __cplusplus
}
#endif