#define BUTTON_1 4
#define BUTTON_2 5
-/* values for move direction and special "button" key bitmasks */
+/* values for move directions and special "button" key bitmasks */
#define MV_NO_MOVING 0
#define MV_LEFT (1 << MV_BIT_LEFT)
#define MV_RIGHT (1 << MV_BIT_RIGHT)
#define MV_UP (1 << MV_BIT_UP)
#define MV_DOWN (1 << MV_BIT_DOWN)
+#define MV_HORIZONTAL (MV_LEFT | MV_RIGHT)
+#define MV_VERTICAL (MV_UP | MV_DOWN)
+#define MV_ALL_DIRECTIONS (MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN)
+#define MV_ANY_DIRECTION (MV_ALL_DIRECTIONS)
+
#define KEY_BUTTON_1 (1 << BUTTON_1)
#define KEY_BUTTON_2 (1 << BUTTON_2)
#define KEY_MOTION (MV_LEFT | MV_RIGHT | MV_UP | MV_DOWN)