+ i->map_obj.type = map_obj_def->id;
+}
+
+
+
+static void build_map_objects_monsterdata(struct MapObjDef * map_obj_def,
+ void * start)
+{
+ struct Monster * m = (struct Monster *) start;
+ m->map_obj.type = map_obj_def->id;
+ struct MonsterDef * md = (struct MonsterDef *) map_obj_def;
+ m->hitpoints = md->hitpoints_start;
+}
+
+
+
+static uint8_t write_map_objects_monsterdata(void * start, FILE * file)
+{
+ struct Monster * m = (struct Monster *) start;
+ return write_uint8(m->hitpoints, file);
+}
+
+
+
+static uint8_t read_map_objects_monsterdata (void * start, FILE * file)
+{
+ struct Monster * m = (struct Monster *) start;
+ return read_uint8(file, &m->hitpoints);
+}
+
+
+
+extern void init_map_object_defs(struct World * world, char * filename)
+{
+ char * err_o = "Trouble in init_map_object_defs() with fopen().";
+ char * err_s = "Trouble in init_map_object_defs() with textfile_sizes().";
+ char * err_m = "Trouble in init_map_object_defs() with malloc()/calloc().";
+ char * err_c = "Trouble in init_map_object_defs() with fclose().";
+
+ FILE * file = fopen(filename, "r");
+ exit_err(NULL == file, world, err_o);
+ uint16_t linemax;
+ exit_err(textfile_sizes(file, &linemax, NULL), world, err_s);
+
+ struct MapObjDef mod;
+ struct ItemDef id;
+ struct MonsterDef md;
+ world->item_def = 0;
+ world->monster_def = 0;
+ struct ItemDef * * p_p_id = &world->item_def;
+ struct MonsterDef * * p_p_md = &world->monster_def;
+ char defline[linemax + 1];
+ char * line_p;
+ char * delim = " ";
+ while (fgets(defline, linemax + 1, file))
+ {
+ mod.next = 0;
+ mod.id = atoi(strtok(defline, delim));
+ mod.m_or_i = * strtok(NULL, delim);
+ mod.mapchar = * strtok(NULL, delim);
+ if ('i' == mod.m_or_i)
+ {
+ line_p = strtok(NULL, delim);
+ }
+ else
+ {
+ md.corpse_id = atoi(strtok(NULL, delim));
+ md.hitpoints_start = atoi(strtok(NULL, delim));
+ line_p = strtok(NULL, delim);
+ }
+ mod.desc = calloc(strlen(line_p), sizeof(char));
+ exit_err(NULL == mod.desc, world, err_m);
+ memcpy(mod.desc, line_p, strlen(line_p) - 1);
+ if ('i' == mod.m_or_i)
+ {
+ id.map_obj_def = mod;
+ * p_p_id = malloc(sizeof(struct ItemDef));
+ exit_err(NULL == p_p_id, world, err_m);
+ * * p_p_id = id;
+ p_p_id = (struct ItemDef * *) * p_p_id;
+ }
+ else
+ {
+ md.map_obj_def = mod;
+ * p_p_md = malloc(sizeof(struct MonsterDef));
+ exit_err(NULL == p_p_md, world, err_m);
+ * * p_p_md = md;
+ p_p_md = (struct MonsterDef * *) * p_p_md;
+ }
+ }
+
+ exit_err(fclose(file), world, err_c);
+}
+
+
+
+extern void free_item_defs(struct ItemDef * id_start)
+{
+ if (0 != id_start->map_obj_def.next)
+ {
+ free_item_defs((struct ItemDef *) id_start->map_obj_def.next);
+ }
+ free(id_start->map_obj_def.desc);
+ free(id_start);
+}
+
+
+
+
+extern void free_monster_defs(struct MonsterDef * md_start)
+{
+ if (0 != md_start->map_obj_def.next)
+ {
+ free_monster_defs((struct MonsterDef *) md_start->map_obj_def.next);
+ }
+ free(md_start->map_obj_def.desc);
+ free(md_start);
+}
+
+
+
+extern uint8_t write_map_objects(struct World * world, void * start,
+ FILE * file)
+{
+ struct MapObj * map_obj;
+ struct MapObjDef * mod;
+ for (map_obj = start; map_obj != 0; map_obj = map_obj->next)
+ {
+ if ( write_uint8(map_obj->type, file)
+ || write_uint16_bigendian(map_obj->pos.y + 1, file)
+ || write_uint16_bigendian(map_obj->pos.x + 1, file))
+ {
+ return 1;
+ }
+ mod = get_map_obj_def(world, map_obj->type);
+ if ('m' == mod->m_or_i)
+ {
+ if (write_map_objects_monsterdata(map_obj, file))
+ {
+ return 1;
+ }
+ }
+ }
+ return write_uint16_bigendian(0, file);
+}
+
+
+
+extern uint8_t read_map_objects(struct World * world, void * start, FILE * file)
+{
+ char * err = "Trouble in read_map_objects() with get_next_map_obj().";
+ struct MapObj * map_obj;
+ struct MapObjDef * mod;
+ size_t size;
+ uint8_t type;
+ char first = 1;
+ long pos;
+ uint16_t read_uint16 = 0;
+ while (1)
+ {
+ pos = ftell(file);
+ if (read_uint16_bigendian(file, &read_uint16))
+ {
+ return 1;
+ }
+ if (0 == read_uint16)
+ {
+ break;
+ }
+ fseek(file, pos, SEEK_SET);
+ if (read_uint8(file, &type))
+ {
+ return 1;
+ }
+ mod = get_map_obj_def(world, type);
+ if ('m' == mod->m_or_i)
+ {
+ size = sizeof(struct Monster);
+ }
+ else
+ {
+ size = sizeof(struct Item);
+ }
+ map_obj = get_next_map_obj(start, &first, size, map_obj);
+ exit_err(NULL == map_obj, world, err);
+ map_obj->type = type;
+ if ( read_uint16_bigendian(file, &map_obj->pos.y)
+ || read_uint16_bigendian(file, &map_obj->pos.x))
+ {
+ return 1;
+ }
+ map_obj->pos.y--;
+ map_obj->pos.x--;
+ if ('m' == mod->m_or_i)
+ {
+ if (read_map_objects_monsterdata(map_obj, file))
+ {
+ return 1;
+ }
+ }
+ }
+ if (!first)
+ {
+ map_obj->next = 0;
+ }
+ return 0;
+}
+
+
+
+extern void * build_map_objects(struct World * world, void * start, char def_id,
+ uint8_t n)
+{
+ char * err = "Trouble in build_map_objects() with get_next_map_obj().";
+ uint8_t i;
+ struct MapObj * mo;
+ char first = 1;
+ struct MapObjDef * mod = get_map_obj_def(world, def_id);
+ size_t size = 0;
+ if ('i' == mod->m_or_i)
+ {
+ size = sizeof(struct Item);
+ }
+ else
+ {
+ size = sizeof(struct Monster);
+ }
+ for (i = 0; i < n; i++)
+ {
+ mo = get_next_map_obj(start, &first, size, mo);
+ exit_err(NULL == mo, world, err);
+ mo->pos = find_passable_pos(world->map);
+ if ('i' == mod->m_or_i)
+ {
+ build_map_objects_itemdata(mod, mo);
+ }
+ else
+ {
+ build_map_objects_monsterdata(mod, mo);
+ }
+
+ }
+ if (!first)
+ {
+ mo->next = 0;
+ }
+ return &mo->next;
+}
+
+
+
+extern void free_items(struct Item * item)
+{
+ if (0 == item)
+ {
+ return;
+ }
+ free_items((struct Item *) item->map_obj.next);
+ free(item);
+}
+
+
+
+extern void free_monsters(struct Monster * monster)
+{
+ if (0 == monster)
+ {
+ return;
+ }
+ free_monsters((struct Monster *) monster->map_obj.next);
+ free(monster);
+}
+
+
+
+extern struct MapObjDef * get_map_obj_def(struct World * world, char def_id)
+{
+ struct MapObjDef * d = NULL;
+ for (d = (struct MapObjDef *) world->monster_def;
+ d->id != def_id && 0 != d->next;
+ d = d->next);
+ if (d->id != def_id)
+ {
+ for (d = (struct MapObjDef *) world->item_def;
+ d->id != def_id && 0 != d->next;
+ d = d->next);
+ }
+ return d;
+}