com.fossgalaxy.games.fireworks.ai.mcts

Class MCTSNode

java.lang.Object

com.fossgalaxy.games.fireworks.ai.mcts.MCTSNode

public class MCTSNode
extends Object

Created by webpigeon on 22/08/16.

Field Summary

Fields

Modifier and Type	Field and Description
protected StatsSummary	rolloutMoves
protected StatsSummary	rolloutScores

Constructor Summary

Constructors

Constructor and Description
MCTSNode(Collection<Action> allUnexpandedActions)
MCTSNode(int agentID, Action moveToState, Collection<Action> allUnexpandedActions)
MCTSNode(MCTSNode parent, int agentId, Action moveToState, Collection<Action> allUnexpandedActions)

Method Summary

Modifier and Type	Method and Description
protected void	addChild(MCTSNode node)
void	backup(double score)
void	backupRollout(int moves, int score) Keep track of stats for rollouts.
boolean	containsChild(Action moveToChild)
boolean	fullyExpanded(GameState state)
boolean	fullyExpanded(GameState state, int nextId)
Action	getAction()
int	getAgent()
Collection<Action>	getAllActionsExpandedAlready()
MCTSNode	getBestNode()
MCTSNode	getChild(Action action)
List<MCTSNode>	getChildren()
int	getChildSize()
int	getDepth()
Collection<Action>	getLegalMoves(GameState state, int nextId)
MCTSNode	getUCTNode(GameState state)
double	getUCTValue()
boolean	isLeaf()
void	printChildren()
String	printD3()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

rolloutScores

protected final StatsSummary rolloutScores

rolloutMoves

protected final StatsSummary rolloutMoves

Constructor Detail

MCTSNode

public MCTSNode(Collection<Action> allUnexpandedActions)

MCTSNode

public MCTSNode(int agentID,
                Action moveToState,
                Collection<Action> allUnexpandedActions)

MCTSNode

public MCTSNode(MCTSNode parent,
                int agentId,
                Action moveToState,
                Collection<Action> allUnexpandedActions)

Method Detail

addChild

protected void addChild(MCTSNode node)

getUCTValue

public double getUCTValue()

getChildren

public List<MCTSNode> getChildren()

backup

public void backup(double score)

isLeaf

public boolean isLeaf()

getUCTNode

public MCTSNode getUCTNode(GameState state)

getAgent

public int getAgent()

getAction

public Action getAction()

getBestNode

public MCTSNode getBestNode()

getDepth

public int getDepth()

toString

public String toString()

Overrides:

toString in class Object

getChildSize

public int getChildSize()

containsChild

public boolean containsChild(Action moveToChild)

getChild

public MCTSNode getChild(Action action)

fullyExpanded

public boolean fullyExpanded(GameState state)

fullyExpanded

public boolean fullyExpanded(GameState state,
                             int nextId)

getLegalMoves

public Collection<Action> getLegalMoves(GameState state,
                                        int nextId)

getAllActionsExpandedAlready

public Collection<Action> getAllActionsExpandedAlready()

printChildren

public void printChildren()

printD3

public String printD3()

backupRollout

public void backupRollout(int moves,
                          int score)

Keep track of stats for rollouts.

Parameters:

moves - The number of moves made for a given rollout

score - The total score achived at the end of the rollout