#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;
-
-
-
-/* Player is non-standard: single and of a hard-coded type. */
-struct Player
-{
- struct yx_uint16 pos;
- unsigned char hitpoints;
-};
-
-/* Structs for standard map objects. */
struct MapObj
{
- void * next;
- char type; /* Map object type identifier (see MapObjDef.id). */
- struct yx_uint16 pos; /* Coordinate of object on map. */
+ 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 Item
-{
- struct MapObj map_obj;
-};
-
-struct Monster
-{
- struct MapObj map_obj;
- unsigned char hitpoints;
-};
-
-
-
-/* Structs for map object *type* definitions. Values common to all members of
- * a single monster or item type are harvested from these.
- */
-
struct MapObjDef
{
struct MapObjDef * next;
- char id; /* Unique identifier of the map object type to describe. */
- char mapchar; /* Map object symbol to appear on map.*/
- char * desc; /* String describing map object in the game log. */
-};
-
-struct ItemDef
-{
- struct MapObjDef map_obj_def;
-};
-
-struct MonsterDef
-{
- struct MapObjDef map_obj_def;
- unsigned char hitpoints_start; /* Hitpoints each monster starts with. */
+ 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 start value for map object's .lifepoints */
};
-/* Initialize map object type definitions 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);
+/* Write map objects chain to "file". */
+extern void write_map_objects(FILE * file);
-/* Build into memory starting at "start" chain of "n" map objects of type
- * "def_id", pass either "build_map_objects_itemdata" or
- * "build_map_objects_monsterdata" as "b_typedata"() to build data specific
- * to monsters or items (or more forms if they ever get invented).
- *
- * TODO: function should decide by itself what "b_typedata"() to call based
- * on monster-or-item info in MapObjDef struct or from a table mapping type
- * identifiers to these.
+/* 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 * build_map_objects(struct World * world, void * start, char def_id,
- unsigned char n, size_t size,
- void (*) (struct MapObjDef *, void *));
-extern void build_map_objects_itemdata(struct MapObjDef * map_obj_def,
- void * start);
-extern void build_map_objects_monsterdata(struct MapObjDef * map_obj_def,
- void * start);
-
-
-
-/* Write to/read from file chain of map objects starting/to start in memory at
- * "start", use "w_typedata"()"/"r_typedata" for data specific to monsters
- * (pass "write_map_objects_monsterdata"/"read_map_objects_itemdata") or items
- * (currently they have no data specific only to them, so pass NULL). Use "size"
- * in read_map_objects() to pass the size of structs of the affected map object
- * type.
- *
- * TODO: the size of these structs should not need to be passed but instead be
- * available via the type id of the affected map object type. The TODO above
- * towards the function deciding its helper function by itself also applies.
+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 write_map_objects(void * start, FILE * file,
- void (* w_typedata) (void *, FILE *) );
-extern void read_map_objects(void * start, FILE * file, size_t size,
- void (* w_typedata) (void *, FILE *) );
-extern void write_map_objects_monsterdata(void * start, FILE * file);
-extern void read_map_objects_monsterdata( void * start, FILE * file);
+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();
/* Get pointer to the map object definition of identifier "def_id". */
-extern struct MapObjDef * get_map_obj_def(struct World * world, char def_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);
projects / plomrogue / blobdiff