/*!
* Return the node containing the new state obtained
* by applying the given action to this node's
* current state, with this node as the parent
*
* @method ChildNode
* @param {Problem.AbstractProblem<State, Action, Cost>} - problem. A standard problem
* @param {Action} action initiating a transition fro one state to the next
* @return {SearchTreeNode.Node<State, Action, Cost>} node - node produced from the current node by Action action
*/
public Node <State, Action, Cost> ChildNode(Problem.AbstractProblem <State, Action, Cost> problem, Action action)
{
State nextState = problem.Result(this.state, action);
Node <State, Action, Cost> cnode = new Node <State, Action, Cost>(nextState, this, action, problem.PathCost(this.pathCost, this.state, action, nextState));
return(cnode);
}
/*! nodes reachable from this node */
public List <Node <State, Action, Cost> > Expand(Problem.AbstractProblem <State, Action, Cost> problem)
{
List <Node <State, Action, Cost> > nodes = new List <Node <State, Action, Cost> >();
problem.Actions(this.state).ForEach(
delegate(Action action)
{
nodes.Add(this.ChildNode(problem, action));
}
);
return(nodes);
}
