Free Hero Mesh

  const unsigned char*d;
  unsigned char*p;
  int i,j;
  long n;
  int txn=sqlite3_get_autocommit(userdb)?sqlite3_exec(userdb,"BEGIN;",0,0,0):1;
  if(!levels_schema) return SQLITE_CORRUPT_VTAB;
  if(screen) set_cursor(XC_coffee_mug);
  fprintf(stderr,"Loading level table...\n");
  if(sqlite3_exec(userdb,levels_schema,0,0,0)) {
    err: fatal("SQL error while loading LEVELS table: %s\n",sqlite3_errmsg(userdb));
  }
  if(sqlite3_prepare_v2(userdb,"SELECT `LEVEL`, IFNULL(`DATA`,READ_LUMP_AT(`OFFSET`,?1)), `USERSTATE` FROM `USERCACHEDATA`"
   " WHERE `FILE` = LEVEL_CACHEID() AND `LEVEL` NOT NULL AND `LEVEL` >= 0 ORDER BY `LEVEL`;",-1,&st1,0))
   goto err;
  // ?1=ID, ?2=CODE, ?3=WIDTH, ?4=HEIGHT, ?5=TITLE, ?6=SOLVED, ?7=SOLVABLE

    sqlite3_bind_int(st2,2,level_index[j]);
    while((i=sqlite3_step(st2))==SQLITE_ROW);
    if(i!=SQLITE_DONE) goto err;
  }
  sqlite3_finalize(st2);
  sqlite3_exec(userdb,"CREATE UNIQUE INDEX `LEVELS_ORD` ON `LEVELS`(`ORD`) WHERE `ORD` NOT NULL;",0,0,0);
  if(!txn) sqlite3_exec(userdb,"COMMIT;",0,0,0);
  fprintf(stderr,"Done\n");
  if(screen) set_cursor(XC_arrow);
  return SQLITE_SCHEMA;
}

Module(vt_levels,
  .xConnect=vt1_levels_connect,
  .xOpen=vt1_levels_open,