#define END_OBSTACLE 8 /* There is an obstacle in front of us */
#define END_ERROR 16 /* Cannot do the command */
#define END_INTR 32 /* interrupted by user */
#define END_OBSTACLE 8 /* There is an obstacle in front of us */
#define END_ERROR 16 /* Cannot do the command */
#define END_INTR 32 /* interrupted by user */