/// <summary>
/// Create a new Node as MinNode or MaxNode
/// </summary>
/// <param name="a">Action in Node</param>
/// <param name="root">To determine if it should be MaxNode or MinNode</param>
/// <returns>The new GameNode</returns>
public GameNode Create(Action a, GameNode root)
{
var node = (root is MinNode) ? (GameNode) new MaxNode(a) : new MinNode(a);
node.m_parent = this;
return(node);
}
/**
* Human plays action a
*/
public override Status Play(Core.Actions.Action a)
{
if (a == null)
{
throw new Exception();
}
Status status;
var pm = a as ActionPM;
if (pm != null)
{
status = Human(pm);
}
else if (a is Taking)
{
status = Human((Taking)a);
}
else
{
throw new Exception();
status = Status.INVALIDACTION;
}
return(status);
}
/*
* Removes now unused subtrees
* O(n)
*/
public GameNode RemoveUnusedChilds(Action a)
{
var node = Create(a, this);
m_children.Clear();
m_children.Enqueue(node);
return(node);
}
public GameNode Add(Action a)
{
var node = (this is MinNode) ? (GameNode) new MaxNode(a) : new MinNode(a);
node.m_parent = this;
m_children.Enqueue(node);
return(node);
}
/**
* Play computer player action
* @return Status flag
*/
public override Core.Actions.Action Compute()
{
// compute computer player action
Core.Actions.Action a = m_gameTree.ComputerPlayer();
if (VERBOSE)
{
Debug.WriteLine("Computer has played\n\ttree size: " + m_gameTree.Size());
}
// redraw game board: current game tree state is the state after computer played
Application.Current.Dispatcher.Invoke(() =>
{
m_view.UpdateBoard(m_gameTree.CurrentState(), a, true);
});
return(a);
}
/**
* Create node with action and score
* @param a Action
* @param score Score
*/
public MaxNode(Actions.Action a, int score) : base(a, score)
{
}
/**
* Create node with action
* @param a Action
*/
public MaxNode(Actions.Action a) : base(a)
{
}
/**
* Create node with action
* @param a Action
*/
public MinNode(Actions.Action a) : base(a)
{
}
