// Prepare for a shuffle
public void Shuffle()
{
if (Locked || Count == 0) return;
lock (cards)
{
var cardIds = new int[cards.Count];
//var cardAliases = new ulong[cards.Count];
var rnd = new CryptoRandom();
var posit = new short[cards.Count];
var availPosList = new List<short>(cards.Count);
for (var i = 0; i < cards.Count; i++)
{
//availPosList[i] = (short)i;
availPosList.Add((short)i);
}
for (int i = cards.Count - 1; i >= 0; i--)
{
var availPos = rnd.Next(availPosList.Count);
var pos = availPosList[availPos];
availPosList.RemoveAt(availPos);
cardIds[i] = cards[pos].Id;
//cardAliases[i] = cis[r].Visible ? ulong.MaxValue : Crypto.ModExp(cis[r].Key);
//cis[pos] = cis[i];
posit[i] = pos;
}
// move own cards to new positions
DoShuffle(cardIds, posit);
// Inform other players
Program.Client.Rpc.Shuffled(Player.LocalPlayer, this, cardIds, posit);
}
}
/// <summary>Part of a shuffle process.</summary>
/// <param name="group">The group being shuffled.</param>
/// <param name="card">An array containing the CardIdentity ids to shuffle.</param>
public void Shuffle(Group group, int[] card)
{
// Array to hold the new aliases (sent to CreateAlias)
ulong[] aliases = new ulong[card.Length];
// Intialize the group shuffle
group.FilledShuffleSlots = 0;
group.HasReceivedFirstShuffledMessage = false;
group.MyShufflePos = new short[card.Length];
// Check if we received enough cards
if (Player.Count - 1 <= 0) return;
if (card.Length < group.Count / (Player.Count - 1))
Program.Trace.TraceEvent(TraceEventType.Warning, EventIds.Event, "[Shuffle] Too few cards received.");
// Do the shuffling
var rnd = new CryptoRandom();
for (int i = card.Length - 1; i >= 0; i--)
{
int r = rnd.Next(i + 1);
int tc = card[r];
card[r] = card[i];
// Create a new alias, if the card is not face up
CardIdentity ci = CardIdentity.Find(tc);
if (group.FindByCardIdentity(ci) != null)
{
card[i] = tc; aliases[i] = ulong.MaxValue;
ci.Visible = true;
}
else
{
ci = new CardIdentity(Program.GameEngine.GenerateCardId());
ci.MySecret = ci.Alias = true;
ci.Key = ((ulong)Crypto.PositiveRandom()) << 32 | (uint)tc;
card[i] = ci.Id; aliases[i] = Crypto.ModExp(ci.Key);
ci.Visible = false;
}
// Give a random position to the card
group.MyShufflePos[i] = (short)Crypto.Random(group.Count);
}
// Send the results
Program.Client.Rpc.CreateAlias(card, aliases);
Program.Client.Rpc.Shuffled(group, card, group.MyShufflePos);
}
// Do the shuffle
internal void DoShuffle()
{
// Set internal fields
//PreparingShuffle = false;
//FilledShuffleSlots = 0;
//HasReceivedFirstShuffledMessage = false;
// Create aliases
//var cis = new CardIdentity[cards.Count];
//for (int i = 0; i < cards.Count; i++)
//{
// cis[i] = cards[i].CreateIdentity();
//}
// Shuffle
var cardIds = new int[cards.Count];
//var cardAliases = new ulong[cards.Count];
var rnd = new CryptoRandom();
var posit = new short[cards.Count];
var availPosList = new List<short>(cards.Count);
for (var i = 0; i < cards.Count; i++)
{
//availPosList[i] = (short)i;
availPosList.Add((short)i);
}
for (int i = cards.Count - 1; i >= 0; i--)
{
var availPos = rnd.Next(availPosList.Count);
var pos = availPosList[availPos];
availPosList.RemoveAt(availPos);
cardIds[i] = cards[pos].Id;
//cardAliases[i] = cis[r].Visible ? ulong.MaxValue : Crypto.ModExp(cis[r].Key);
//cis[pos] = cis[i];
posit[i] = pos;
}
// Send the request
//Program.Client.Rpc.CreateAlias(cardIds, cardAliases);
//Program.Client.Rpc.Shuffle(this, cardIds);
Program.Client.Rpc.Shuffled(this, cardIds, posit);
}
private void ShuffleAlone()
{
var rnd = new CryptoRandom();
for (int i = cards.Count - 1; i >= 0; i--)
{
int r = rnd.Next(i + 1);
Card temp = cards[r];
cards[r] = cards[i];
cards[i] = temp;
}
OnShuffled();
}
// Do the shuffle
internal void DoShuffle()
{
// Set internal fields
PreparingShuffle = false;
FilledShuffleSlots = 0;
HasReceivedFirstShuffledMessage = false;
// Create aliases
var cis = new CardIdentity[cards.Count];
for (int i = 0; i < cards.Count; i++)
{
if (cards[i].IsVisibleToAll())
{
cis[i] = cards[i].Type;
cis[i].Visible = true;
}
else
{
CardIdentity ci = cis[i] = new CardIdentity(Program.Game.GenerateCardId());
ci.Alias = ci.MySecret = true;
ci.Key = ((ulong) Crypto.PositiveRandom()) << 32 | (uint) cards[i].Type.Id;
ci.Visible = false;
}
}
// Shuffle
var cardIds = new int[cards.Count];
var cardAliases = new ulong[cards.Count];
var rnd = new CryptoRandom();
for (int i = cards.Count - 1; i >= 0; i--)
{
int r = rnd.Next(i + 1);
cardIds[i] = cis[r].Id;
cardAliases[i] = cis[r].Visible ? ulong.MaxValue : Crypto.ModExp(cis[r].Key);
cis[r] = cis[i];
}
// Send the request
Program.Client.Rpc.CreateAlias(cardIds, cardAliases);
Program.Client.Rpc.Shuffle(this, cardIds);
}