#define EP_THROWABLE 28
#define EP_CAN_EXPLODE 29
#define EP_GRAVITY_REACHABLE 30
+#define EP_DONT_GET_HIT_BY 31
/* values for pre-defined properties */
/* (from here on, values can be changed by inserting new values) */
#define IS_THROWABLE(e) HAS_PROPERTY(e, EP_THROWABLE)
#define CAN_EXPLODE(e) HAS_PROPERTY(e, EP_CAN_EXPLODE)
#define IS_GRAVITY_REACHABLE(e) HAS_PROPERTY(e, EP_GRAVITY_REACHABLE)
+#define DONT_GET_HIT_BY(e) HAS_PROPERTY(e, EP_DONT_GET_HIT_BY)
/* macros for special configurable properties */
#define IS_EM_SLIPPERY_WALL(e) HAS_PROPERTY(e, EP_EM_SLIPPERY_WALL)