public static ZwinderStateManager Create(BinaryReader br, ZwinderStateManagerSettings settings, Func <int, bool> reserveCallback)
{
// Initial format had no version number, but I think it's a safe bet no valid file has buffer size 2^56 or more so this should work.
int version = br.ReadByte();
var current = ZwinderBuffer.Create(br, settings.Current(), version == 0);
var recent = ZwinderBuffer.Create(br, settings.Recent());
var gaps = ZwinderBuffer.Create(br, settings.GapFiller());
if (version == 0)
{
settings.AncientStateInterval = br.ReadInt32();
}
var ret = new ZwinderStateManager(current, recent, gaps, reserveCallback, settings);
var ancientCount = br.ReadInt32();
for (var i = 0; i < ancientCount; i++)
{
var key = br.ReadInt32();
var length = br.ReadInt32();
var data = br.ReadBytes(length);
ret._reserved.Add(key, data);
}
ret.RebuildStateCache();
return(ret);
}
public void UpdateSettings(ZwinderStateManagerSettings settings, bool keepOldStates = false)
{
Settings = settings;
_current = UpdateBuffer(_current, settings.Current(), keepOldStates);
_recent = UpdateBuffer(_recent, settings.Recent(), keepOldStates);
_gapFiller = UpdateBuffer(_gapFiller, settings.GapFiller(), keepOldStates);
if (keepOldStates)
{
// For ancients ... lets just make sure we aren't keeping states with a gap below the new interval
if (settings.AncientStateInterval > _ancientInterval)
{
int lastReserved = 0;
List <int> framesToRemove = new List <int>();
foreach (int f in _reserved.Keys)
{
if (!_reserveCallback(f) && f - lastReserved < settings.AncientStateInterval)
{
framesToRemove.Add(f);
}
else
{
lastReserved = f;
}
}
foreach (int f in framesToRemove)
{
if (f != 0)
{
EvictReserved(f);
}
}
}
}
else
{
List <int> framesToRemove = new List <int>();
foreach (int f in _reserved.Keys)
{
if (f != 0 && !_reserveCallback(f))
{
framesToRemove.Add(f);
}
}
foreach (int f in framesToRemove)
{
EvictReserved(f);
}
}
_ancientInterval = settings.AncientStateInterval;
RebuildStateCache();
}