src/board.h


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#define BOARD_WIDTH 7
#define BOARD_ROW_UNITS ((BOARD_WIDTH * 2) + 1)
#define BOARD_UNITS BOARD_ROW_UNITS * BOARD_ROW_UNITS


char EMPTY = ' ';

int neighbor_increments[] = {
  - BOARD_ROW_UNITS,
    1,
    BOARD_ROW_UNITS,
  - 1
};


/* structs */
typedef struct {
  char edges[4];
  char center;
  int shield;
} Tile;

typedef struct {
  char feature;
  int meeple;
  int structure_group;
} BoardUnit;

/* board */
void initialize_board(BoardUnit* board);
void print_board(BoardUnit* board);
void write_board(BoardUnit* board, char* filename);
void read_board(BoardUnit* board, char* filename);

/* moves */
int is_allowed_placement(Tile tile, int index, BoardUnit* board);
int translate_coordinate(int index);
int is_center_index(int index);
int place_tile(Tile tile, int index, BoardUnit* board, int force);

/* structures */
void traverse_structure(int group, int index, BoardUnit* board);
void refresh_structure_groups(BoardUnit* board);
int evaluate_structure(int index, BoardUnit* board);