public async Task UpdateAsync(Player player)
{
Position lastKnownRegion = player.LastKnownRegion;
var regionChanged = player.RegionChanged;
int[] appearanceTickets = player.AppearanceTickets;
SynchronizationBlockSet blockSet = player.BlockSet;
Position position = player.Position;
SynchronizationSegment segment = (player.IsTeleporting || player.RegionChanged) ?
new TeleportSegment(blockSet, position) : new MovementSegment(blockSet, player.GetDirections());
List <Player> localPlayers = player.LocalPlayerList;
int oldCount = localPlayers.Count;
List <SynchronizationSegment> segments = new();
int distance = player.ViewingDistance;
foreach (var other in localPlayers.ToList())
{
if (Removeable(position, distance, other))
{
localPlayers.Remove(other);
segments.Add(new RemoveMobSegment());
}
else
{
segments.Add(new MovementSegment(other.BlockSet, other.GetDirections()));
}
}
int added = 0, count = localPlayers.Count;
IRegion current = _regionRepository.FromPosition(position);
HashSet <RegionCoordinates> regions = current.GetSurrounding();
regions.Add(current.Coordinates);
IEnumerable <Player> players = regions.Select(t => _regionRepository.Get(t))
.SelectMany(region => region.GetEntities <Player>(EntityType.Player));
foreach (var other in players)
{
if (count >= MaximumLocalPlayers)
{
player.ExcessivePlayers = true;
break;
}
else if (added >= NewPlayersPerCycle)
{
break;
}
Position local = other.Position;
if (other != player && local.IsWithinDistance(position, distance) && !localPlayers.Contains(other))
{
localPlayers.Add(other);
count++;
added++;
blockSet = other.BlockSet;
int index = other.Index;
if (!blockSet.Contains <AppearanceBlock>() && !HasCachedAppearance(appearanceTickets, index - 1, other.AppearanceTicket))
{
blockSet = (SynchronizationBlockSet)blockSet.Clone();
blockSet.Add(SynchronizationBlock.CreateAppearanceBlock(other));
}
segments.Add(new AddPlayerSegment(blockSet, index, local));
}
}
PlayerSynchronizationMessage message = new PlayerSynchronizationMessage(lastKnownRegion, position,
regionChanged, segment, oldCount, segments);
await player.SendAsync(message);
}
