/// <summary>
/// Invoked whenever WorldEntities are added to the map this listener is listening to. Converts
/// the new entities into DisplayEntities and sends them to all players who are on the current map.
/// Sends currently existing DisplayEntities to newly connected players.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void OnWorldEntitiesAdded(object sender, WorldEntityAddedArgs e)
{
var entities = new List <DisplayEntity>();
foreach (var entity in e.AddedEntities)
{
entities.Add(new DisplayEntity
{
Id = entity.Id,
IconUris = entity.IconUris,
Name = entity.Name,
OwnerId = entity.OwnerGuid
});
}
_displayEntities.AddRange(entities);
var tasks = new List <Task>
{
_hubContext.Clients.Group(MapId).SendAsync("addEntities", entities)
};
foreach (var entity in e.AddedEntities)
{
// Skip sending messages to the owner of Ai controlled entities.
if (entity.OwnerGuid == GameplayConstants.AiId)
{
continue;
}
tasks.Add(_hubContext.Clients.User(entity.OwnerGuid.ToString()).SendAsync("addEntities", _displayEntities));
tasks.Add(_hubContext.Clients.User(entity.OwnerGuid.ToString()).SendAsync("getMyEntity", entity.Id));
}
await Task.WhenAll(tasks.ToArray());
}
/// <summary>
/// Checks to see if the map state has changed, if so invokes the events.
/// </summary>
public Task CheckChangesAsync()
{
WorldEntityAddedArgs entityAddedArgs = null;
WorldEntityRemovedArgs entityRemovedArgs = null;
MapStateChangedArgs mapStateChangedArgs = null;
lock (_lock)
{
if (_worldEntityAdded)
{
var newEntities = _newEntities;
entityAddedArgs = new WorldEntityAddedArgs
{
AddedEntities = newEntities,
ConnectedPlayers = _connectedPlayers
};
_newEntities = new List <WorldEntity>();
_worldEntityAdded = false;
}
if (_worldEntityRemoved)
{
var removedEntities = _removedEntityIds;
entityRemovedArgs = new WorldEntityRemovedArgs
{
RemovedEntityIds = removedEntities,
ConnectedPlayers = _connectedPlayers
};
_removedEntityIds = new List <int>();
_worldEntityRemoved = false;
}
if (_isStateChanged)
{
mapStateChangedArgs = new MapStateChangedArgs
{
Entities = _allEntities,
ConnectedPlayers = _connectedPlayers
};
_isStateChanged = false;
}
}
var tasks = new List <Task>();
if (entityAddedArgs != null)
{
tasks.Add(Task.Run(() => WorldEntityAdded?.Invoke(this, entityAddedArgs)));
}
if (entityRemovedArgs != null)
{
tasks.Add(Task.Run(() => WorldEntityRemoved?.Invoke(this, entityRemovedArgs)));
}
if (mapStateChangedArgs != null)
{
tasks.Add(Task.Run(() => MapStateChanged?.Invoke(this, mapStateChangedArgs)));
}
tasks.Add(Task.Run(() => GameTick?.Invoke(this, new GameTickEventArgs())));
return(Task.WhenAll(tasks));
}
