Direction

direction.cc

/*
* ゲーム内の方向を表すコードの一部
*/

enum Direction {
  kRight,
  kUp,
  kLeft,
  kDown,
  kDirectionCount
};

typedef struct {
  S32 x;
  S32 y;
} TilePosition;

class Tile {
public:
  static const TilePosition kDirToPos[(int)kDirectionCount];
  
  static TilePosition GetDelta(Direction dir);
};

const TilePosition Tile::kDirToPos[(int)kDirectionCount] = {
  {1,0},{0,1},{-1,0},{0,-1}
};

TilePosition Tile::GetDelta(Direction dir)
{
  return kDirToPos[(int)dir];
}