-/* Player is non-standard: single and of a hard-coded type. */
-struct Player
-{
- struct yx_uint16 pos;
- uint8_t hitpoints;
-};
-
-
-
struct MapObj
{
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 */
-/* Add new object(s) ("n": how many?) of "type" to map on random position(s). */
+/* Add new object(s) ("n": how many?) of "type" to map on random position(s).
+ * New animate objects are never placed in the same square with other animated
+ * ones.
+ */
extern void add_map_object(struct World * world, uint8_t type);
extern void add_map_objects(struct World * world, uint8_t type, uint8_t n);
+/* Move object of "id" from "source" inventory to "target" inventory. */
+extern void own_map_object(struct MapObj ** target, struct MapObj ** source,
+ uint8_t id);
+
+
+
+/* Get pointer to the MapObj struct that represents the player. */
+extern struct MapObj * get_player(struct World * world);
+
+
+
/* Get pointer to the map object definition of identifier "def_id". */
extern struct MapObjDef * get_map_object_def(struct World * w, uint8_t id);
+/* Move not only "mo" to "pos", but also all map objects owned by it. */
+extern void set_object_position(struct MapObj * mo, struct yx_uint16 pos);
+
+
+
#endif