#ifndef MAP_OBJECTS_H
#define MAP_OBJECTS_H
-
-
#include <stdio.h> /* for FILE typedef */
#include <stdint.h> /* for uint8_t */
#include "yx_uint16.h" /* for yx_uint16 coordinates */
-struct World;
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 */
struct yx_uint16 pos; /* coordinate on map */
+ uint8_t command; /* map object's current action */
+ uint8_t arg; /* optional field for .command argument */
+ uint8_t progress; /* turns already passed to realize .command */
};
-
-
struct MapObjDef
{
struct MapObjDef * next;
- uint8_t id; /* unique identifier of map object type */
- uint8_t corpse_id; /* id of type to change into upon destruction */
+ uint8_t id; /* map object definition identifier / sets .type */
+ uint8_t corpse_id; /* type to change map object into upon destruction */
char char_on_map; /* map object symbol to appear on map */
- char * name; /* string to describe object in game log*/
- uint8_t lifepoints; /* default value for map object lifepoints member */
+ char * name; /* string to describe object in game log */
+ uint8_t lifepoints; /* default start value for map object's .lifepoints */
};
-/* Initialize map object defnitions chain from file at path "filename". */
-extern void init_map_object_defs(struct World * world, char * filename);
-
-
+/* Initialize map object definitions chain from file at path "filename". */
+extern void init_map_object_defs(char * filename);
/* Free map object definitions chain starting at "mod_start". */
extern void free_map_object_defs(struct MapObjDef * mod_start);
-
-
-/* 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);
-
-
-
/* Write map objects chain to "file". */
-extern void write_map_objects(struct World * world, FILE * file);
+extern void write_map_objects(FILE * file);
-/* Read from "file" map objects chain; use "line" as char array for fgets() and
- * expect strings of max. "linemax" length.
+/* Read map objects chain from "file"; use "line" as char array for fgets() and
+ * expect line strings of max. "linemax" length to be read by it.
*/
-extern void read_map_objects(struct World * world, FILE * file,
- char * line, int linemax);
-
+extern void read_map_objects(FILE * file, char * line, int linemax);
+/* Add 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 animate ones.
+ */
+extern void add_map_object(uint8_t type);
+extern void add_map_objects(uint8_t type, uint8_t n);
/* Free map objects in map object chain starting at "mo_start. */
extern void free_map_objects(struct MapObj * mo_start);
-
+/* 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);
-
-
+extern struct MapObj * get_player();
/* Get pointer to the map object definition of identifier "def_id". */
-extern struct MapObjDef * get_map_object_def(struct World * w, uint8_t id);
+extern struct MapObjDef * get_map_object_def(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);