text: #ifndef _db_h_
  #define _db_h_
  
  #ifdef __cplusplus
  extern "C" {
  #endif
      #include "map.h"
      #include "sign.h"
  #ifdef __cplusplus
  }
  #endif
  
  void db_enable();
  void db_disable();
  int get_db_enabled();
  int db_init(char *path);
  void db_close();
  void db_commit();
  void db_auth_set(char *username, char *identity_token);
  int db_auth_select(char *username);
  void db_auth_select_none();
  int db_auth_get(
      char *username,
      char *identity_token, int identity_token_length);
  int db_auth_get_selected(
      char *username, int username_length,
      char *identity_token, int identity_token_length);
  void db_save_state(float x, float y, float z, float rx, float ry);
  int db_load_state(float *x, float *y, float *z, float *rx, float *ry);
  void db_insert_block(int p, int q, int x, int y, int z, int w);
  void db_insert_light(int p, int q, int x, int y, int z, int w);
  void db_insert_sign(
      int p, int q, int x, int y, int z, int face, const char *text);
  void db_delete_sign(int x, int y, int z, int face);
  void db_delete_signs(int x, int y, int z);
  void db_delete_all_signs();
  
  #ifdef __cplusplus
  extern "C"{
  #endif
  void db_load_blocks(Map *map, int p, int q);
  #ifdef _cplusplus
  }
  #endif
  
  #ifdef __cplusplus
  extern "C"{
  #endif
  void db_load_lights(Map *map, int p, int q);
  #ifdef __cplusplus
  }
  #endif
  
  #ifdef _cplusplus
  extern "C"{
  #endif
  void db_load_signs(SignList *list, int p, int q);
  #ifdef __cplusplus
  }
  #endif
  
  int db_get_key(int p, int q);
  void db_set_key(int p, int q, int key);
  void db_worker_start();
  void db_worker_stop();
  int db_worker_run(void *arg);
  #endif
  