public static List <object> Serialize(
GameEntity playerEntity, EntityState state, GameSnapshot snapshot, SerializationContext context)
{
var levelEntity = playerEntity.Position.LevelEntity;
if (state == EntityState.Added)
{
var serializedLevel = LevelSnapshot.Serialize(levelEntity, null, null, context);
return(PlayerSnapshot.Serialize(playerEntity, state, null, serializedLevel, context));
}
else
{
if (!snapshot.SerializedLevels.TryGetValue(levelEntity.Id, out var serializedLevel))
{
var position = playerEntity.Position;
var level = context.DbContext.Entry(position).Property(p => p.LevelId);
serializedLevel = LevelSnapshot.Serialize
(position.LevelEntity, level.IsModified
? EntityState.Added
: state,
snapshot.LevelSnapshots.GetValueOrDefault(levelEntity.Id), context);
snapshot.SerializedLevels[levelEntity.Id] = serializedLevel;
}
return(PlayerSnapshot.Serialize(
playerEntity, state, snapshot.PlayerSnapshots[playerEntity.Id], serializedLevel, context));
}
}
// TODO: Perf: Use change notifications instead
public void Snapshot(GameDbContext dbContext, GameServices services)
{
SerializedLevels.Clear();
var snapshotedLevels = new List <int>();
var manager = dbContext.Manager;
foreach (var playerEntity in manager.Players)
{
var context = new SerializationContext(dbContext, playerEntity, services);
var levelEntity = playerEntity.Position.LevelEntity;
LevelSnapshot levelSnapshot = null;
if (!snapshotedLevels.Contains(levelEntity.Id))
{
if (!LevelSnapshots.TryGetValue(levelEntity.Id, out levelSnapshot))
{
levelSnapshot = new LevelSnapshot();
LevelSnapshots[levelEntity.Id] = levelSnapshot;
}
levelSnapshot.Snapshot(levelEntity, context);
snapshotedLevels.Add(levelEntity.Id);
}
if (!PlayerSnapshots.TryGetValue(playerEntity.Id, out var playerSnapshot))
{
playerSnapshot = new PlayerSnapshot();
PlayerSnapshots[playerEntity.Id] = playerSnapshot;
}
playerSnapshot.Snapshot(playerEntity, context);
}
if (snapshotedLevels.Count != LevelSnapshots.Count)
{
foreach (var levelId in LevelSnapshots.Keys.ToList())
{
if (!snapshotedLevels.Contains(levelId))
{
LevelSnapshots.Remove(levelId);
}
}
}
if (manager.Players.Count != PlayerSnapshots.Count)
{
foreach (var playerId in PlayerSnapshots.Keys.ToList())
{
if (!manager.Players.ContainsEntity(playerId))
{
PlayerSnapshots.Remove(playerId);
}
}
}
}
public static List <object> Serialize(
GameEntity levelEntity, EntityState?state, LevelSnapshot snapshot, SerializationContext context)
{
var manager = context.Manager;
var level = levelEntity.Level;
List <object> properties;
switch (state)
{
case null:
case EntityState.Added:
var knownTerrain = new List <short>();
for (short j = 0; j < level.KnownTerrain.Length; j++)
{
var feature = level.KnownTerrain[j];
if (feature != (byte)MapFeature.Unexplored)
{
knownTerrain.Add(j);
knownTerrain.Add(feature);
}
}
var wallNeighbours = new List <short>();
for (short j = 0; j < level.WallNeighbours.Length; j++)
{
if (level.KnownTerrain[j] == (byte)MapFeature.Unexplored)
{
continue;
}
var neighbours = level.WallNeighbours[j] & (byte)DirectionFlags.Cross;
if (neighbours != (byte)DirectionFlags.None)
{
wallNeighbours.Add(j);
wallNeighbours.Add((byte)neighbours);
}
}
var visibleTerrain = new List <short>();
for (short j = 0; j < level.VisibleTerrain.Length; j++)
{
var visibility = level.VisibleTerrain[j];
if (visibility != 0)
{
visibleTerrain.Add(j);
visibleTerrain.Add(visibility);
}
}
properties = state == null
? new List <object>(10)
: new List <object>(11)
{
(int)state
};
properties.Add(GetActors(levelEntity, manager)
.Select(a => LevelActorSnapshot.Serialize(a, null, context)).ToList());
properties.Add(GetItems(levelEntity, manager)
.Select(t => LevelItemSnapshot.Serialize(t, null, null, context)).ToList());
properties.Add(GetConnections(levelEntity, manager)
.Select(c => ConnectionSnapshot.Serialize(c, null, context)).ToList());
properties.Add(knownTerrain);
properties.Add(wallNeighbours);
properties.Add(visibleTerrain);
properties.Add(level.BranchName);
properties.Add(level.Depth);
properties.Add(level.Width);
properties.Add(level.Height);
return(properties);
default:
var levelEntry = context.DbContext.Entry(level);
properties = new List <object> {
(int)state
};
var i = 2;
var serializedActors = GameTransmissionProtocol.Serialize(
GetActors(levelEntity, manager),
snapshot.ActorsSnapshot,
LevelActorSnapshot.Serialize,
context);
if (serializedActors.Count > 0)
{
properties.Add(i);
properties.Add(serializedActors);
}
i++;
var serializedItems = GameTransmissionProtocol.Serialize(
GetItems(levelEntity, manager),
snapshot.ItemsSnapshot,
LevelItemSnapshot.Serialize,
context);
if (serializedItems.Count > 0)
{
properties.Add(i);
properties.Add(serializedItems);
}
i++;
var serializedConnections = GameTransmissionProtocol.Serialize(
GetConnections(levelEntity, manager),
snapshot.ConnectionsSnapshot,
ConnectionSnapshot.Serialize,
context);
if (serializedConnections.Count > 0)
{
properties.Add(i);
properties.Add(serializedConnections);
}
if (levelEntry.State != EntityState.Unchanged)
{
i++;
var wallNeighboursChanges = new List <object>();
var knownTerrainChanges = new List <object>(level.KnownTerrainChanges.Count * 2);
if (level.KnownTerrainChanges.Count > 0)
{
foreach (var terrainChange in level.KnownTerrainChanges)
{
knownTerrainChanges.Add(terrainChange.Key);
knownTerrainChanges.Add(terrainChange.Value);
wallNeighboursChanges.Add(terrainChange.Key);
wallNeighboursChanges.Add(level.WallNeighbours[terrainChange.Key] &
(byte)DirectionFlags.Cross);
}
}
if (level.TerrainChanges.Count > 0)
{
foreach (var terrainChange in level.TerrainChanges)
{
if (level.VisibleTerrain[terrainChange.Key] == 0)
{
continue;
}
knownTerrainChanges.Add(terrainChange.Key);
knownTerrainChanges.Add(terrainChange.Value);
}
}
if (knownTerrainChanges.Count > 0)
{
properties.Add(i);
properties.Add(knownTerrainChanges);
}
i++;
if (level.WallNeighboursChanges.Count > 0)
{
foreach (var wallNeighboursChange in level.WallNeighboursChanges)
{
if (level.VisibleTerrain[wallNeighboursChange.Key] == 0)
{
continue;
}
wallNeighboursChanges.Add(wallNeighboursChange.Key);
wallNeighboursChanges.Add(wallNeighboursChange.Value & (byte)DirectionFlags.Cross);
}
}
if (wallNeighboursChanges.Count > 0)
{
properties.Add(i);
properties.Add(wallNeighboursChanges);
}
i++;
if (level.VisibleTerrainChanges.Count > 0)
{
properties.Add(i);
var changes = new object[level.VisibleTerrainChanges.Count * 2];
var j = 0;
foreach (var visibleTerrainChange in level.VisibleTerrainChanges)
{
changes[j++] = visibleTerrainChange.Key;
changes[j++] = visibleTerrainChange.Value;
}
properties.Add(changes);
}
}
return(properties.Count > 1 ? properties : null);
}
}