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A core library to help implement two players games.

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package com.fathzer.games.ai.experimental;

/**
 * A search state.
 * 
It is used to store the search state of a alpha-beta or Negamax search at a specific depth.
 * 
WARNING: This class is not thread-safe.
 * @param  The type of the moves
 */
public class TreeSearchState {
	final int depth;
	int alphaOrigin;
	int betaOrigin;
	int alpha;
	int beta;
	int value;
    M bestMove;
	M lastMove;
	
	/**
	 * Creates a new instance.
	 * @param depth The depth
	 * @param alpha The alpha value
	 * @param beta The beta value
	 */
	TreeSearchState(int depth, int alpha, int beta) {
		this.depth = depth;
		this.alphaOrigin = alpha;
		this.betaOrigin = beta;
		this.alpha = alpha;
		this.beta = beta;
	}

	/** Gets the current depth
	 * @return the depth
	 */
	public int getDepth() {
		return depth;
	}

	/** Gets value of alpha when the search enters at this depth
	 * @return the alphaOrigin
	 */
	public int getAlphaOrigin() {
		return alphaOrigin;
	}

	/** Gets value of beta when the search enters at this depth
	 * @return the betaOrigin
	 */
	public int getBetaOrigin() {
		return betaOrigin;
	}

	/** Gets current alpha value
	 * @return the alpha
	 */
	public int getAlpha() {
		return alpha;
	}

	/** Gets current beta value
	 * @return the beta
	 */
	public int getBeta() {
		return beta;
	}

	/** Gets the current evaluation
	 * @return the value
	 */
	public int getValue() {
		return value;
	}

	/** Gets the current best move found at this depth
	 * @return the bestMove
	 */
	public M getBestMove() {
		return bestMove;
	}

	/** Gets the last move played at this depth
	 * @return the lastMove, null if no move has been made
	 */
	public M getLastMove() {
		return lastMove;
	}
}