-#define MV_HORIZONTAL (MV_LEFT | MV_RIGHT)
-#define MV_VERTICAL (MV_UP | MV_DOWN)
-#define MV_ALL_DIRECTIONS (MV_HORIZONTAL | MV_VERTICAL)
-#define MV_ANY_DIRECTION (MV_ALL_DIRECTIONS)
-#define MV_TOWARDS_PLAYER (1 << MV_BIT_TOWARDS_PLAYER)
-#define MV_AWAY_FROM_PLAYER (1 << MV_BIT_AWAY_FROM_PLAYER)
-#define MV_ALONG_LEFT_SIDE (1 << MV_BIT_ALONG_LEFT_SIDE)
-#define MV_ALONG_RIGHT_SIDE (1 << MV_BIT_ALONG_RIGHT_SIDE)
-#define MV_TURNING_LEFT (1 << MV_BIT_TURNING_LEFT)
-#define MV_TURNING_RIGHT (1 << MV_BIT_TURNING_RIGHT)
-