ai
Class OptimizingAlphaBetaPlayer

java.lang.Object
  core.Player
      ai.OptimizingAlphaBetaPlayer

All Implemented Interfaces:

Runnable, net.antichess.ai.AiPlayer

public class OptimizingAlphaBetaPlayer
extends Player
implements Runnable

An ai player that uses alpha-beta pruning for some heuristic.

Specification Fields :

state : game state // the current state of the came according to the ai

Constructor Summary

OptimizingAlphaBetaPlayer(Color c, Heuristic h)
Creates a new OptimizingAlphaBetaPlayer player of the given color

OptimizingAlphaBetaPlayer(Color c, Heuristic h, int num_threads, PrintStream output, Map<Position,Piece> powerupDiffs)
Creates a new OptimizingAlphaBetaPlayer player of the given color

Method Summary

Move	askForMove(Move opponentsMove) Gets the next move of the player, given the opponents move.
Move	askForMove(Move opponentsMove, long myTime, long opponentsTime)
void	run() Start a new threadSearch on the current state.
void	update(Game game) Has the player make a series of moves.

Methods inherited from class core.Player

getColor, getMove, getPersistentState

Methods inherited from class java.lang.Object

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

Constructor Detail

OptimizingAlphaBetaPlayer

public OptimizingAlphaBetaPlayer(Color c,
                                 Heuristic h)

Creates a new OptimizingAlphaBetaPlayer player of the given color

Parameters:

c - color of the player

h - Static evaluator to use.

Requires:

c not null, h not null

OptimizingAlphaBetaPlayer

public OptimizingAlphaBetaPlayer(Color c,
                                 Heuristic h,
                                 int num_threads,
                                 PrintStream output,
                                 Map<Position,Piece> powerupDiffs)

Creates a new OptimizingAlphaBetaPlayer player of the given color

Parameters:

c - color of the player

h - Static evaluator to use.

num_threads - Maximum number of threads to use at a time

output - Place to spew debugging output.

powerupDiffs - Positions of powerups.

Requires:

c not null, h not null, output not null, num_threads >= 1

Method Detail

askForMove

public Move askForMove(Move opponentsMove)

Description copied from class: Player

Gets the next move of the player, given the opponents move.

Specified by:

askForMove in class Player

Parameters:

opponentsMove - the opponents move

See Also:

Player

askForMove

public Move askForMove(Move opponentsMove,
                       long myTime,
                       long opponentsTime)

Overrides:

askForMove in class Player

See Also:

Player

run

public void run()

Start a new threadSearch on the current state.

Specified by:

run in interface Runnable

update

public void update(Game game)

Has the player make a series of moves. Used to get the AI player up to speed on a newly loaded game

Specified by:

update in class Player

Parameters:

game - the new game

Requires:

game not null

Modifies:

state