public void UpdateCache()
{
TileEntities.Clear();
Entities.Clear();
SQLiteTransaction trans = database.BeginTransaction();
int numChunksChanged = 0;
int numNewChunks = 0;
int numChunksTotal = 0;
//mThread = new Thread(delegate()
//{
map.SetBusy("Updating cache...");
map.SetBusy(string.Format("Please wait, {0}...\r\n{1} new, {2} changed", (FirstCache) ? "creating cache (may take a while)" : "updating cache", numNewChunks, numChunksChanged));
Dimension[] dims = (Dimension[])map.GetDimensions();
Dimension dim = dims[map.Dimension];
map.ForEachChunkFile(dim.ID, delegate(IMapHandler _map, string file)
{
bool NeedsUpdate = false;
bool NewChunk = false;
using (SQLiteCommand cmd = database.CreateCommand())
{
Vector2i pos;
cmd.CommandText = "SELECT cnkMD5,cnkX,cnkZ,dimID FROM Chunks WHERE cnkFile='" + file + "';";
SQLiteDataReader rdr = cmd.ExecuteReader();
if (!rdr.HasRows)
{
NewChunk = true;
NeedsUpdate = true;
pos = map.GetChunkCoordsFromFile(file, true);
}
else
{
pos = new Vector2i(
(int)((long)rdr["cnkX"]),
(int)((long)rdr["cnkZ"])
);
if (!mFileCoords.ContainsKey(file))
{
mFileCoords.Add(file, new Vector3i(pos.X, pos.Y,
(int)((long)rdr["dimID"])));
}
}
if (dim.MinimumChunk.X > pos.X)
{
dim.MinimumChunk.X = pos.X;
}
if (dim.MaximumChunk.X < pos.X)
{
dim.MaximumChunk.X = pos.X;
}
if (dim.MinimumChunk.Y > pos.Y)
{
dim.MinimumChunk.Y = pos.Y;
}
if (dim.MaximumChunk.Y < pos.Y)
{
dim.MaximumChunk.Y = pos.Y;
}
if (!NeedsUpdate)
{
if (rdr["cnkMD5"].ToString() != GetMD5HashFromFile(file))
{
NeedsUpdate = true;
}
}
if (NeedsUpdate)
{
if (NewChunk)
{
numNewChunks++;
}
else
{
numChunksChanged++;
}
if (pos == null)
{
return;
}
//Console.WriteLine(string.Format("Updating chunk {0} in {1} ({2})...", pos, dim.Name, file));
map.SetBusy(string.Format("Please wait, {0}...\r\n{1} new, {2} changed", (FirstCache) ? "creating cache (may take a while)" : "updating cache", numNewChunks, numChunksChanged));
Chunk c = map.GetChunk(pos.X, pos.Y);
map.UnloadChunks();
}
System.Windows.Forms.Application.DoEvents();
}
// Dump it from RAM onto disk to prevent bloat.
if (numChunksChanged + numNewChunks % 500 == 499)
{
Console.WriteLine("Saving cache...");
map.SetBusy(string.Format("Please wait, {0}...\r\n[Saving]", (FirstCache) ? "creating cache (may take a while)" : "updating cache"));
trans.Commit();
trans = database.BeginTransaction();
map.UnloadChunks();
}
});
UpdateDimension(dim);
map.SetIdle();
trans.Commit(); // NOW save to disk.
//});
//mThread.Start();
}
private void UpdateDimension(Dimension dim)
{
try
{
rwLock.AcquireWriterLock(300);
using (SQLiteCommand cmd = database.CreateCommand())
{
cmd.CommandText = "REPLACE INTO Dimensions (dimID,dimFolder,dimMinX,dimMinZ,dimMaxX,dimMaxZ) VALUES (@dimID,@dimFolder,@dimMinX,@dimMinZ,@dimMaxX,@dimMaxZ);";
cmd.Parameters.AddRange(new SQLiteParameter[]{
new SQLiteParameter("@dimID",dim.ID),
new SQLiteParameter("@dimFolder",dim.Folder),
new SQLiteParameter("@dimMinX",dim.MinimumChunk.X),
new SQLiteParameter("@dimMinZ",dim.MinimumChunk.Y),
new SQLiteParameter("@dimMaxX",dim.MaximumChunk.X),
new SQLiteParameter("@dimMaxZ",dim.MaximumChunk.Y)
});
cmd.Prepare();
cmd.ExecuteNonQuery();
}
}
finally
{
if (rwLock.IsWriterLockHeld)
rwLock.ReleaseWriterLock();
}
}
