protected override void Save(UndoCache buffer, string path)
{
using (FileStream fs = File.Create(path)) {
BinaryWriter w = new BinaryWriter(fs);
long entriesPos = 0;
ChunkHeader last = default(ChunkHeader);
UndoCacheNode node = buffer.Head;
while (node != null)
{
List <UndoCacheItem> items = node.Items;
for (int i = 0; i < items.Count; i++)
{
UndoCacheItem uP = items[i];
DateTime time = node.BaseTime.AddSeconds(uP.TimeDelta);
int timeDiff = (int)(time - last.BaseTime).TotalSeconds;
if (last.LevelName != node.MapName || timeDiff > (65535 >> 2) || last.Entries == ushort.MaxValue)
{
WriteChunkEntries(w, last.Entries, entriesPos);
last = WriteEmptyChunk(w, node, time, ref entriesPos);
}
int flags = (uP.Flags & 0xC000) | timeDiff;
w.Write((ushort)flags); w.Write(uP.Index);
w.Write(uP.Type); w.Write(uP.NewType);
last.Entries++;
}
if (last.Entries > 0)
{
WriteChunkEntries(w, last.Entries, entriesPos);
}
node = node.Next;
}
}
}
public static UndoCacheItem Make(UndoCacheNode node, short timeDelta, ref Player.UndoPos pos)
{
UndoCacheItem item = default(UndoCacheItem);
item.Index = pos.x + node.Width * (pos.z + node.Length * pos.y);
item.Flags = (ushort)(timeDelta & 0x3FFF);
if (pos.type == Block.custom_block)
{
item.Type = pos.extType;
item.Flags |= (ushort)(1 << 14);
}
else
{
item.Type = pos.type;
}
if (pos.newtype == Block.custom_block)
{
item.NewType = pos.newExtType;
item.Flags |= (ushort)(1 << 15);
}
else
{
item.NewType = pos.newtype;
}
return(item);
}
public static UndoCacheNode Make(Level lvl, DateTime time)
{
UndoCacheNode node = new UndoCacheNode();
node.MapName = lvl.name;
node.Width = lvl.Width; node.Height = lvl.Height; node.Length = lvl.Length;
node.BaseTime = time;
return(node);
}
static ChunkHeader WriteEmptyChunk(BinaryWriter w, UndoCacheNode node, DateTime time, ref long entriesPos)
{
ChunkHeader header = default(ChunkHeader);
time = time.ToUniversalTime();
byte[] mapBytes = Encoding.UTF8.GetBytes(node.MapName);
w.Write((ushort)mapBytes.Length);
w.Write(mapBytes); header.LevelName = node.MapName;
w.Write(time.Ticks); header.BaseTime = time;
entriesPos = w.BaseStream.Position;
w.Write((ushort)0);
w.Write((ushort)node.Width); header.Width = (ushort)node.Width;
w.Write((ushort)node.Height); header.Height = (ushort)node.Height;
w.Write((ushort)node.Length); header.Length = (ushort)node.Length;
return(header);
}
protected override void Save(List <Player.UndoPos> buffer, string path)
{
UndoCacheNode node = new UndoCacheNode();
string lastLoggedName = "";
using (FileStream fs = File.Create(path)) {
BinaryWriter w = new BinaryWriter(fs);
long entriesPos = 0;
ChunkHeader last = default(ChunkHeader);
foreach (Player.UndoPos uP in buffer)
{
DateTime time = Server.StartTime.AddSeconds(uP.timeDelta);
int timeDiff = (int)(time - last.BaseTime).TotalSeconds;
if (last.LevelName != uP.mapName || timeDiff > (65535 >> 2) || last.Entries == ushort.MaxValue)
{
if (!LevelInfo.ExistsOffline(uP.mapName))
{
if (uP.mapName != lastLoggedName)
{
lastLoggedName = uP.mapName;
Server.s.Log("Missing map file \"" + lastLoggedName + "\", skipping undo entries");
}
continue;
}
Vec3U16 dims = IMapImporter.Formats[0].ReadDimensions(LevelInfo.LevelPath(uP.mapName));
node.Width = dims.X; node.Height = dims.Y; node.Length = dims.Z;
WriteChunkEntries(w, last.Entries, entriesPos);
node.MapName = uP.mapName;
last = WriteEmptyChunk(w, node, time, ref entriesPos);
}
UndoCacheItem item = UndoCacheItem.Make(node, 0, uP);
int flags = (item.Flags & 0xC000) | timeDiff;
w.Write((ushort)flags); w.Write(item.Index);
w.Write(item.Type); w.Write(item.NewType);
last.Entries++;
}
if (last.Entries > 0)
{
WriteChunkEntries(w, last.Entries, entriesPos);
}
}
}
/// <summary> Removes all items from the cache and resets the state to default. </summary>
public void Clear()
{
Count = 0;
if (Tail == null)
{
return;
}
LastClear = DateTime.UtcNow;
UndoCacheNode node = Tail;
while (node != null)
{
node.Items = null;
node = node.Prev;
}
Tail = null; Head = null;
}
protected override IEnumerable <UndoFormatEntry> GetEntries(Stream s, UndoFormatArgs args)
{
UndoCacheNode node = cache.Tail;
if (node == null)
{
yield break;
}
UndoFormatEntry pos;
bool super = Player.IsSuper(args.Player);
DateTime start = args.Start;
while (node != null)
{
Level lvl = LevelInfo.FindExact(node.MapName);
if (!super && !args.Player.level.name.CaselessEq(node.MapName))
{
node = node.Prev; continue;
}
List <UndoCacheItem> items = node.Items;
pos.LevelName = node.MapName;
for (int i = items.Count - 1; i >= 0; i--)
{
UndoCacheItem item = items[i];
DateTime time = node.BaseTime.AddTicks(item.TimeDelta * TimeSpan.TicksPerSecond);
if (time < start)
{
args.Stop = true; yield break;
}
pos.Time = time;
node.Unpack(item.Index, out pos.X, out pos.Y, out pos.Z);
item.GetBlock(out pos.Block, out pos.ExtBlock);
item.GetNewBlock(out pos.NewBlock, out pos.NewExtBlock);
yield return(pos);
}
node = node.Prev;
}
}
/// <summary> Appends an item to the cache. </summary>
public void Add(Level lvl, Player.UndoPos item)
{
lock (AddLock) {
DateTime time = Server.StartTime.AddTicks(item.timeDelta * TimeSpan.TicksPerSecond);
if (Tail == null)
{
Tail = UndoCacheNode.Make(lvl, time); Head = Tail;
}
if (lvl.name != Tail.MapName || lvl.Width != Tail.Width || lvl.Height != Tail.Height ||
lvl.Length != Tail.Length || Math.Abs((time - Tail.BaseTime).TotalSeconds) > TimeDeltaMax)
{
UndoCacheNode node = UndoCacheNode.Make(lvl, time);
Tail.Next = node; node.Prev = Tail;
Tail = node;
}
short timeDiff = (short)(time - Tail.BaseTime).TotalSeconds;
Tail.Items.Add(UndoCacheItem.Make(Tail, timeDiff, ref item));
Count++;
}
}
public static UndoCacheItem Make(UndoCacheNode node, short timeDelta, Player.UndoPos pos)
{
return(Make(node, timeDelta, ref pos));
}