protected override void ReadUndoData(List <Player.UndoPos> buffer, string path)
{
Player.UndoPos Pos;
UndoCacheItem item = default(UndoCacheItem);
using (Stream fs = File.OpenRead(path))
using (BinaryReader r = new BinaryReader(fs))
{
int approxEntries = (int)(fs.Length / entrySize);
if (buffer.Capacity < approxEntries)
{
buffer.Capacity = approxEntries;
}
while (fs.Position < fs.Length)
{
ChunkHeader chunk = ReadHeader(fs, r);
Pos.mapName = chunk.LevelName;
for (int j = 0; j < chunk.Entries; j++)
{
item.Flags = r.ReadUInt16();
DateTime time = chunk.BaseTime.AddTicks((item.Flags & 0x3FFF) * TimeSpan.TicksPerSecond);
Pos.timeDelta = (int)time.Subtract(Server.StartTime).TotalSeconds;
int index = r.ReadInt32();
Pos.x = (ushort)(index % chunk.Width);
Pos.y = (ushort)((index / chunk.Width) / chunk.Length);
Pos.z = (ushort)((index / chunk.Width) % chunk.Length);
item.Type = r.ReadByte();
item.NewType = r.ReadByte();
item.GetBlock(out Pos.type, out Pos.extType);
item.GetNewBlock(out Pos.newtype, out Pos.newExtType);
buffer.Add(Pos);
}
}
}
}
protected override bool UndoEntry(Player p, string path, Vec3U16[] marks,
ref byte[] temp, DateTime start)
{
List <ChunkHeader> list = new List <ChunkHeader>();
int timeDelta = (int)DateTime.UtcNow.Subtract(Server.StartTime).TotalSeconds;
Player.UndoPos Pos = default(Player.UndoPos);
Vec3U16 min = marks[0], max = marks[1];
bool undoArea = min.X != ushort.MaxValue;
UndoCacheItem item = default(UndoCacheItem);
using (Stream fs = File.OpenRead(path))
using (BinaryReader r = new BinaryReader(fs))
{
ReadHeaders(list, r);
for (int i = list.Count - 1; i >= 0; i--)
{
ChunkHeader chunk = list[i];
Level lvl;
if (!CheckChunk(chunk, start, p, out lvl))
{
return(false);
}
if (lvl == null || (p.level != null && !p.level.name.CaselessEq(lvl.name)))
{
continue;
}
BufferedBlockSender buffer = new BufferedBlockSender(lvl);
if (!undoArea)
{
min = new Vec3U16(0, 0, 0);
max = new Vec3U16((ushort)(lvl.Width - 1), (ushort)(lvl.Height - 1), (ushort)(lvl.Length - 1));
}
Pos.mapName = chunk.LevelName;
fs.Seek(chunk.DataPosition, SeekOrigin.Begin);
if (temp == null)
{
temp = new byte[ushort.MaxValue * entrySize];
}
fs.Read(temp, 0, chunk.Entries * entrySize);
for (int j = chunk.Entries - 1; j >= 0; j--)
{
int offset = j * entrySize;
item.Flags = U16(temp, offset + 0);
DateTime time = chunk.BaseTime.AddTicks((item.Flags & 0x3FFF) * TimeSpan.TicksPerSecond);
if (time < start)
{
buffer.CheckIfSend(true); return(false);
}
int index = I32(temp, offset + 2);
Pos.x = (ushort)(index % chunk.Width);
Pos.y = (ushort)((index / chunk.Width) / chunk.Length);
Pos.z = (ushort)((index / chunk.Width) % chunk.Length);
if (Pos.x < min.X || Pos.y < min.Y || Pos.z < min.Z ||
Pos.x > max.X || Pos.y > max.Y || Pos.z > max.Z)
{
continue;
}
item.Type = temp[offset + 6];
item.NewType = temp[offset + 7];
item.GetBlock(out Pos.type, out Pos.extType);
item.GetNewBlock(out Pos.newtype, out Pos.newExtType);
UndoBlock(p, lvl, Pos, timeDelta, buffer);
}
buffer.CheckIfSend(true);
}
}
return(true);
}