public void Clear()
{
header = new WorldHeader();
tiles = null;
chests = null;
signs = null;
footer = null;
posChests = 0;
posEnd = 0;
posFooter = 0;
posNpcs = 0;
posSigns = 0;
posTiles = 0;
MaxX = 0;
MaxY = 0;
progress = 0;
if (reader != null)
{
reader.Close();
reader = null;
}
if (stream != null)
stream = null;
if (buffReader != null)
buffReader = null;
if (bw != null)
bw = null;
}
// Ok so this is how this works.
// It starts out by walking the file backwards to find the ending offset.
// It then sets up the original path and starts scanning along the tiles.
// When it finds an unknown tile type the program duplicates the current
// path and makes one follow the path of it being non-important while
// the other follows the path of being important.
// When a path turns out not to fit the data it gets removed from the list.
// All paths get checked in parallel.
public TileImportance[] ScanWorld(String world, BackgroundWorker worker = null)
{
Timer t = null;
TileImportance[] retList;
if (worker != null)
{
bw = worker;
t = new Timer(333);
t.Elapsed += new ElapsedEventHandler(timer_ScanWorld);
t.Enabled = true;
t.Start();
}
stream = new FileStream(world, FileMode.Open, FileAccess.Read);
reader = new BinaryReader(stream);
buffReader = new BufferedBinaryReader(stream, 5000, 1000);
posChests = new BackwardsScanner(stream, header).SeekToChestsBackwards();
stream.Seek(0, SeekOrigin.Begin);
ReadHeader();
retList = ScanWorldTiles();
if (bw != null)
{
t.Stop();
bw = null;
}
reader.Close();
return retList;
}