*****************************************************************************/
typedef enum { D_LEFT, D_RIGHT, D_UP, D_DOWN } direction_t;
typedef enum { NO_ORIENTATION = 0, HORIZ, VERT } orientation_t;
*****************************************************************************/
typedef enum { D_LEFT, D_RIGHT, D_UP, D_DOWN } direction_t;
typedef enum { NO_ORIENTATION = 0, HORIZ, VERT } orientation_t;