public async Task PreUpdateAsync(Player player, Dictionary <RegionCoordinates, HashSet <RegionUpdateMessage> > encodes,
Dictionary <RegionCoordinates, HashSet <RegionUpdateMessage> > updates)
{
Position old = player.Position;
_walkingQueueHandler.Pulse(player);
var local = true;
if (player.IsTeleporting)
{
player.ResetViewingDistance();
local = false;
}
Position position = player.Position;
if (!player.HasLastKnownRegion() || IsRegionUpdateRequired(player))
{
player.RegionChanged = true;
local = false;
player.LastKnownRegion = position;
await _protoMessageSender.SendAsync(player, new RegionChangeMessage { CentralRegionX = position.CentralRegionX, CentralRegionY = position.CentralRegionY });
}
var oldViewable = _regionRepository.FromPosition(old).GetSurrounding();
var newViewable = _regionRepository.FromPosition(position).GetSurrounding();
var differences = newViewable.ToHashSet();
differences.RemoveWhere(t => !oldViewable.Contains(t));
var full = newViewable.ToHashSet();
if (local)
{
full.RemoveWhere(t => oldViewable.Contains(t));
}
await SendUpdates(player, player.LastKnownRegion, differences, full, encodes, updates);
}
/// <summary>
/// Adds the <c>next</c> step to this WalkingQueue.
/// </summary>
/// <param name="mob">The mob.</param>
/// <param name="current">The current <see cref="Position"/>.</param>
/// <param name="next">The next Position.</param>
private void AddStep(Mob mob, Position current, Position next)
{
int nextX = next.X, nextY = next.Y, height = next.Height;
int deltaX = nextX - current.X;
int deltaY = nextY - current.Y;
int max = Math.Max(Math.Abs(deltaX), Math.Abs(deltaY));
IRegion region = _regionRepository.FromPosition(current);
for (int count = 0; count < max; count++)
{
if (deltaX < 0)
{
deltaX++;
}
else if (deltaX > 0)
{
deltaX--;
}
if (deltaY < 0)
{
deltaY++;
}
else if (deltaY > 0)
{
deltaY--;
}
Position step = new Position(nextX - deltaX, nextY - deltaY, height);
if (!region.Contains(step))
{
region = _regionRepository.FromPosition(step);
}
mob.WalkingQueue.Points.AddToBack(step);
}
}
