+ struct MapObj * next; /* pointer to next one in map object chain */
+ struct MapObj * owns; /* chain of map objects owned / in inventory */
+ uint8_t id; /* individual map object's unique identifier */
+ uint8_t type; /* ID of appropriate map object definition */
+ uint8_t lifepoints; /* 0: object is inanimate; >0: hitpoints */
+ struct yx_uint16 pos; /* coordinate on map */