/// <summary>
/// Evaluates this node in the decision tree.
/// If the return value is true then move will contain the desired move (if any).
/// </summary>
/// <param name="state">The current state of the game.</param>
/// <param name="move">If this node wants to make a move then it will be placed in this parameter.</param>
/// <returns>Returns true if this node is satisfied and false otherwise.</returns>
/// <remarks>Although move must be initialized, that does not mean it is not null.</remarks>
protected internal override bool Evaluate(GameState <M> state, ref M move)
{
IEnumerable <Node <M> > chldrn = Children;
InnerNode.RemoveAllChildren();
InnerNode.AddChildren(chldrn);
return(InnerNode.Evaluate(state, ref move));
}
/// <summary>
/// Adds all the nodes given as children of this node.
/// </summary>
/// <param name="nodes">The nodes to add.</param>
/// <returns>The number of nodes actually added.</returns>
/// <exception cref="ArgumentException">Thrown if called on a terminal node.</exception>
public virtual int AddChildren(IEnumerable <Node <M> > nodes)
{
if (InnerNode != null)
{
return(InnerNode.AddChildren(nodes));
}
if (Terminal)
{
throw new ArgumentException("Terminal nodes have no children.");
}
int ret = 0;
foreach (Node <M> n in nodes)
{
if (AddChild(n))
{
ret++;
}
}
return(ret);
}
