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/*
* NetCosm - a MUD server
* Copyright (C) 2016 Franklin Wei
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "globals.h"
/* Our world is an array of rooms, each having a list of objects in
* them, as well as actions that can be performed in them
* (verbs). Objects are added by hooks in rooms, which are provided as
* function pointers by the world module. */
struct child_data;
struct object_t;
struct verb_t;
typedef enum room_id { ROOM_NONE = -1 } room_id;
enum direction_t { DIR_N = 0, DIR_NE, DIR_E, DIR_SE, DIR_S, DIR_SW, DIR_W, DIR_NW, DIR_UP, DIR_DN, DIR_IN, DIR_OT, NUM_DIRECTIONS };
/* the data we get from a world module */
struct roomdata_t {
/* the non-const pointers can be modified by the world module */
const char * const uniq_id;
/* mutable properties */
char *name;
char *desc;
/* unmutable properties, changes will have no effect */
const char * const adjacent[NUM_DIRECTIONS];
void (* const hook_init)(room_id id);
/* return values indicate permission to enter/leave,
* setting to NULL defaults to true.
*/
/* NOTE: struct child_data is aliased as "user_t"!!! */
/* return false to deny entering/leaving a room */
bool (* const hook_enter)(room_id room, struct child_data *user);
bool (* const hook_leave)(room_id room, struct child_data *user);
void (* const hook_serialize)(room_id room, int fd);
void (* const hook_deserialize)(room_id room, int fd);
void (* const hook_destroy)(room_id room);
};
struct room_t {
room_id id;
struct roomdata_t data;
room_id adjacent[NUM_DIRECTIONS];
/* hash maps */
void *objects; /* multimap of object name -> object */
void *verbs;
void *users; /* username -> child_data */
void *userdata;
};
/* room/world */
bool room_user_add(room_id id, struct child_data *child);
bool room_user_del(room_id id, struct child_data *child);
/* On the first call, room should be a valid room id, and *save should
* point to a void pointer. On subsequent calls, room should be
* ROOM_NONE, and *save should remain unchanged from the previous
* call. This call returns a LINKED LIST of objects with the same
* name every time it is called, not individual objects. */
const struct multimap_list *room_obj_iterate(room_id room, void **save, size_t *n_pairs);
/* new should point to a new object allocated with obj_new(), with
* 'name' properly set
* returns true if the name is room-unique
*/
bool room_obj_add(room_id room, struct object_t *obj);
bool room_obj_add_alias(room_id room, struct object_t *obj, char *alias);
bool room_obj_del(room_id room, const char *name);
bool room_obj_del_alias(room_id room, struct object_t *obj, const char *alias);
bool room_obj_del_by_ptr(room_id room, struct object_t *obj);
const struct multimap_list *room_obj_get(room_id room, const char *obj);
const struct multimap_list *room_obj_get_size(room_id room, const char *name, size_t *n_objs);
size_t room_obj_count(room_id room);
/* local verbs override global verbs */
bool room_verb_add(room_id room, struct verb_t*);
bool room_verb_del(room_id room, const char *verbname);
/* get the local map of verbs */
void *room_verb_map(room_id room);
/* free a room and its resources */
void room_free(struct room_t *room);
/* semi-protected, should only be called from world_ */
void room_init_maps(struct room_t *room);
size_t room_obj_count_noalias(room_id id);
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