public StackObject(StackObjectType objectType, string typeString, string text,
Player owner, Player controller, ColorsEnum colors,
GameActionDelegate resolutionAction)
{
ObjectType = objectType;
TypeString = typeString;
Text = text;
Owner = owner;
Controller = controller;
Colors = colors;
ResolutionAction = resolutionAction;
}
public StackObject(StackObjectType objectType, string typeString, string text,
Player owner, Player controller, ColorsEnum colors,
GameActionDelegate resolutionAction)
{
ObjectType = objectType;
TypeString = typeString;
Text = text;
Owner = owner;
Controller = controller;
Colors = colors;
ResolutionAction = resolutionAction;
}
/// <summary>
/// Expands the node. Creates a child node using the first untried action and adds it to the tree.
/// </summary>
/// <returns>
/// The new child node.
/// </returns>
/// <param name='node'>
/// Node to expand.
/// </param>
/// <param name='actionsFromState'>
/// List of actions from the state.
/// </param>
private MctsNode ExpandNode(MctsNode node, IList <GameActionDelegate> actionsFromState)
{
// choose an untried action from node
GameActionDelegate untriedAction = null;
LinkedList <MctsNode> childrenToVerify = new LinkedList <MctsNode>(node.Children);
foreach (var a in actionsFromState)
{
bool taken = false;
var child = childrenToVerify.First;
while (child.Next != null)
{
if (child.Value.ActionTaken == a)
{
taken = true;
childrenToVerify.Remove(child);
break;
}
child = child.Next;
}
if (!taken)
{
untriedAction = a;
break;
}
}
if (untriedAction == null)
{
throw new ArgumentNullException("Parameter node must not be fully expanded");
}
// create and add the child
stateMachine.CurrState = node.GameState;
stateMachine.PerformAction(untriedAction);
MctsNode newChild = new MctsNode()
{
ActionTaken = untriedAction,
GameState = stateMachine.CurrState,
};
node.Children.Add(newChild);
return(newChild);
}
public Ability(AbilityAvailablePredicate pred, GameActionDelegate a)
{
this.AbilityAvailable = pred;
this.AbilityAction = a;
}
public Ability(AbilityAvailablePredicate pred, GameActionDelegate a)
{
this.AbilityAvailable = pred;
this.AbilityAction = a;
}
public void PerformAction(GameActionDelegate action)
{
action(CurrState.PlayerWithPriority, CurrState);
}
/// <summary>
/// Enumerate all possible actions from CurrState for a given player.
/// </summary>
/// <returns>
/// The list of actions.
/// </returns>
/// <param name='p'>
/// The player for whom to enumerate the actions.
/// </param>
public List <ActionDescriptionTuple> EnumActions(Player p)
{
var actions = new List <ActionDescriptionTuple>();
// if the stack is empty, and that player has priority
if (p == CurrState.PlayersTurn &&
p == CurrState.PlayerWithPriority &&
CurrState.Stack.Count == 0)
{
#region Attacks
// declareAtk
if (p == CurrState.PlayersTurn &&
CurrState.CurrStep == Steps.declareAtk &&
!CurrState.AttackersDeclared)
{
var possibleAttackers = (from c in CurrState.Battlefield
where c.Controller == CurrState.PlayersTurn
where c.Type.Contains("Creature")
where c.ControlTimestamp < CurrState.TurnNumber // TODO: represent summoning sickness correctly
where (c.Status & Card.StatusEnum.Tapped) == 0 // i.e. untapped
select c as CreatureCard)
.ToList();
if (possibleAttackers.Count() > 0)
{
AttackersToBlockersDictionary = new Dictionary <CreatureCard, IList <CreatureCard> >();
DefendingPlayer = Players[(currentPlayerIndex + 1) % Players.Count];
// TODO: make choosing attackers actually consistent, fix this hack
// present the list of actions as comprising only of choosing attackers
// warning - number of actions is exponential in number of attackers
if (true || p is MctsPlayer)
{
var allPossibleAttacks = possibleAttackers.PowerSet();
StringBuilder descSb = new StringBuilder();
foreach (var atkSubset in allPossibleAttacks)
{
var atkSubsetClosureVariable = atkSubset; // needed so the closures point to distinct subsets instead of just the last
descSb.Clear();
descSb.Append("Attack with ");
foreach (CreatureCard c in atkSubset)
{
descSb.Append(c.Name);
descSb.Append(", ");
}
if (atkSubset.Count == 0)
{
descSb.Append("nothing"); // complete description for attacking with nothing
}
else
{
descSb.Remove(descSb.Length - 2, 2); // remove trailing ", "
}
var possibleAttack = new ActionDescriptionTuple()
{
GameAction = (Player player, State s) =>
{
foreach (CreatureCard c in atkSubsetClosureVariable)
{
AttackersToBlockersDictionary[c] = null;
c.Status |= Card.StatusEnum.Tapped; // TODO: allow for vigilance
}
// TODO: allow "fast" effects to be played, but for now, skip priority pass
// Give "priority" to defending player so they can assign blocks
CurrState.PlayerWithPriority = DefendingPlayer;
s.MoveToNextStep();
},
ActionDescription = descSb.ToString()
};
actions.Add(possibleAttack);
}
CurrState.AttackersDeclared = true;
return(actions);
}
// TODO: change implementation to allow attacking planeswalkers, multiplayer, etc
var chosenAttackers = p.ChooseAttackers(possibleAttackers);
// create attackers to blockers dictionary that will be passed to defending player
string attackersMsg = "Player " + p.Name + " attacks with ";
foreach (var creature in chosenAttackers)
{
AttackersToBlockersDictionary[creature] = new List <CreatureCard>();
attackersMsg += creature.Name + ", ";
}
if (chosenAttackers.Count > 0)
{
logger.Debug(attackersMsg);
}
}
}
#endregion
// move to the next step
var moveToNextStep = new ActionDescriptionTuple()
{
GameAction = (Player player, State s) => { s.MoveToNextStep(); },
ActionDescription = "Move to the next step."
};
actions.Add(moveToNextStep);
// for convience, an end turn action is available
var endTurn = new ActionDescriptionTuple()
{
GameAction = (Player player, State s) => {
do
{
s.MoveToNextStep();
}while(s.CurrStep != Steps.main1);
},
ActionDescription = "Move to the next turn"
};
actions.Add(endTurn);
// if it's a main phase, sorcery speed effects can be played
if ((CurrState.CurrStep == Steps.main1 || CurrState.CurrStep == Steps.main2))
{
// AP can play lands
if (CurrState.LandsLeftToPlayThisTurn > 0)
{
var lands = from c in CurrState.Hands[CurrState.PlayerWithPriority]
where c.Type.Contains("Land")
select c;
foreach (Card land in lands)
{
var actionDescription = new ActionDescriptionTuple()
{
GameAction =
(Player player, State s) => {
s.Battlefield.Add(land);
s.Hands[player].Remove(land);
land.ControlTimestamp = s.TurnNumber;
land.Controller = player;
s.LandsLeftToPlayThisTurn--;
},
ActionDescription =
"Play a " + land.Name + " (land)"
};
actions.Add(actionDescription);
}
}
// Cast sorceries and creatures
// TODO: make this work for sorceries
ManaPool floating = CurrState.ManaPools[CurrState.PlayerWithPriority];
var sorcerySpeedSpells = from c in CurrState.Hands[CurrState.PlayerWithPriority]
where c.Type.Contains("Creature")
where c.Cost.CanCast(floating)
select c;
foreach (Card spell in sorcerySpeedSpells)
{
var spellClosureVar = spell; // needed so the closure refers to this spell, not just the last one.
// this doesn't work for sorceries
StackObject so = new StackObject(StackObject.StackObjectType.Card, spell.Type, spell.Text, spell.Owner, spell.Owner, spell.Colors,
(Player Player, State s) => {
s.Battlefield.Add(spellClosureVar);
spellClosureVar.ControlTimestamp = s.TurnNumber;
spellClosureVar.Controller = Player;
});
var actionDescription = new ActionDescriptionTuple()
{
GameAction =
(Player player, State s) => {
s.Stack.Add(so);
s.Hands[player].Remove(spellClosureVar);
RemoveManaFromPool(s.ManaPools[p], spellClosureVar.Cost);
},
ActionDescription =
"Cast " + spellClosureVar.Name + " (creature)"
};
actions.Add(actionDescription);
}
}
}
#region Blocks
if (CurrState.AttackersDeclared &&
p == DefendingPlayer &&
CurrState.CurrStep == Steps.declareBlk &&
!CurrState.BlockersDeclared)
{
var possibleBlockers = (from c in CurrState.Battlefield
where c.Controller == DefendingPlayer
where c.Type.Contains("Creature")
where (c.Status & Card.StatusEnum.Tapped) == 0
select c as CreatureCard)
.ToList();
if (AttackersToBlockersDictionary == null)
{
throw new NullReferenceException("AttackersToBlockersDictionary was unexpectedly null");
}
if (possibleBlockers.Count() == 0) // give "priority" back to active player
{
actions.Add(new ActionDescriptionTuple()
{
GameAction = (Player player, State s) =>
{
CurrState.BlockersDeclared = true;
CurrState.PlayerWithPriority = CurrState.PlayersTurn;
// TODO: while there are no "fast" effects, skip priority pass
CurrState.MoveToNextStep();
},
ActionDescription = "No blocks"
});
}
else
{
// TODO: make choosing blockers actually consistent, fix this hack
// present the list of actions as comprising only of choosing blocks
// warning - number of actions is exponential in the number of attackers AND blockers
if (true || p is MctsPlayer)
{
var attackers = AttackersToBlockersDictionary.Keys.ToList();
var possibleBlocks = GetPossibleBlocks(attackers, possibleBlockers);
StringBuilder descSb = new StringBuilder();
foreach (var block in possibleBlocks)
{
var blockClosureVariable = block; // needed so the closures point to distinct subsets instead of just the last
descSb.Clear();
GameActionDelegate ga = (Player player, State s) => {
foreach (var t in blockClosureVariable)
{
AttackersToBlockersDictionary[t.Attacker] = t.Blockers;
}
// TODO: allow "fast" effects to be played, but for now, skip priority pass
// give priority back to active player
CurrState.PlayerWithPriority = CurrState.PlayersTurn;
s.MoveToNextStep();
};
foreach (var atbTuple in block)
{
AttackersToBlockersDictionary[atbTuple.Attacker] = atbTuple.Blockers;
descSb.Append("Block ");
descSb.Append(atbTuple.Attacker.ToString());
descSb.Append(" with ");
if (atbTuple.Blockers.Count == 0)
{
descSb.Append("nothing; ");
}
else
{
foreach (var blocker in atbTuple.Blockers)
{
descSb.Append(blocker.ToString());
descSb.Append(" & ");
}
descSb.Remove(descSb.Length - 3, 3); // remove trailing " & "
descSb.Append("; ");
}
}
//descSb.Remove(descSb.Length-2,2); // remove trailing "; "
var possibleBlockDescription = new ActionDescriptionTuple()
{
GameAction = ga,
ActionDescription = descSb.ToString()
};
actions.Add(possibleBlockDescription);
}
CurrState.BlockersDeclared = true;
return(actions);
}
List <CreatureCard> blockersCopy;
IDictionary <CreatureCard, IList <CreatureCard> > atbCopy;
// query player for legal blocks
do
{
// copy the data structures in case defending player generates invalid blocks
blockersCopy = possibleBlockers.ToList();
atbCopy = AttackersToBlockersDictionary.DeepCopy();
// query player for blocks
DefendingPlayer.ChooseBlockers(atbCopy, blockersCopy);
} while (!LegalBlocks(atbCopy));
AttackersToBlockersDictionary = atbCopy;
p.OrderBlockers(AttackersToBlockersDictionary);
// display blocks
string blockersMsg = "Player " + DefendingPlayer.Name + " blocks:\n";
foreach (var attacker in AttackersToBlockersDictionary.Keys)
{
// only display attackers that are blocked
if (AttackersToBlockersDictionary[attacker].Count > 0)
{
blockersMsg += attacker.Name + " is blocked by ";
foreach (var blockers in AttackersToBlockersDictionary[attacker])
{
blockersMsg += blockers.Name + ", ";
}
blockersMsg += "\n";
}
}
logger.Debug(blockersMsg);
}
}
#endregion
// "instant" speed effects, such as activated abilities, instants
if (p == CurrState.PlayerWithPriority)
{
// check for activated abilities
// note, this where clause assumes that only the controllers of cards can activate their abilities
// not true for Oona's Prowler, Mindslaver, etc
var abilitiesAvailable = from card in CurrState.Battlefield
where card.Controller == CurrState.PlayerWithPriority
from ab in card.ActivatedAbilities
where ab.AbilityAvailable(p, CurrState)
select Tuple.Create(card, ab);
foreach (var tuple in abilitiesAvailable)
{
var abilityAction = new ActionDescriptionTuple()
{
GameAction = tuple.Item2.AbilityAction,
ActionDescription = tuple.Item1.Name + "'s activated ability"
};
actions.Add(abilityAction);
}
// TODO: allow casting instants
}
return(actions);
}
