package lyj.chess.main;

/**
 * 五子棋判断输赢类
 * 
 * @author LYJ
 * 
 */
public class GameContorler {

	private static int HOW_MANY = 5;

	/**
	 * 判断棋子横线是否五连珠
	 * 
	 * @param row
	 *            横坐标
	 * @param column
	 *            纵坐标
	 * @param chessType
	 * @return
	 */
	public boolean acrossLine(int[][] chess, int row, int column,
			int chessType, int howMany) {
		int count = 0;
		int origalX = row, origalY = column;
		while (column >= 0 && chess[column][row] == chessType) {
			count++;
			column--;
			if (count == HOW_MANY) 
				return true;
			
		}
		column = origalY + 1;
		while (column < chess[0].length && chess[column][row] == chessType) {
			count++;
			column++;
			if (count == HOW_MANY) 
				return true;
			

		}
		row = origalX;
		column = origalY;
		return false;
	}

	/**
	 * 判断纵线是否五连珠
	 * 
	 * @param chess
	 * @param row
	 * @param column
	 * @param chessType
	 * @return
	 */
	public boolean upRightLine(int[][] chess, int row, int column,
			int chessType, int howMany) {
		int count = 0;
		// 往上
		int origalX = row, origalY = column;
		while (row >= 0 && chess[column][row] == chessType) {
			count++;
			row--;
			if (count == HOW_MANY) 
				return true;
			
		}
		row = origalX + 1;

		// 往下
		while (row < chess.length && chess[column][row] == chessType) {
			count++;
			row++;
			if (count == HOW_MANY) 
				return true;
			

		}
		row = origalX;
		column = origalY;
		return false;
	}

	/**
	 * 判断左斜
	 * 
	 * @param chess
	 * @param row
	 * @param column
	 * @param chessType
	 * @return
	 */
	public boolean leftBais(int[][] chess, int row, int column, int chessType,
			int howMany) {
		int count = 0;
		int origalX = row, origalY = column;
		while (row >= 0 && column <= chess[0].length - 1
				&& chess[column][row] == chessType) {
			count++;
			column++;
			row--;
			if (count == HOW_MANY) 
				return true;
			
		}
		row = origalX + 1;
		column = origalY - 1;
		while (row <= chess.length - 1 && column >= 0
				&& chess[column][row] == chessType) {
			count++;
			row++;
			column--;
			if (count == HOW_MANY) 
				return true;
			
		}
		row = origalX;
		column = origalY;
		return false;
	}

	/**
	 * 判断右斜
	 * 
	 * @param chess
	 * @param row
	 * @param column
	 * @param chessType
	 * @return
	 */
	public boolean rightBias(int[][] chess, int row, int column, int chessType,
			int howMany) {
		int count = 0;
		int origalX = row, origalY = column;
		while (row <= 14 && column <= 14 && chess[column][row] == chessType) {
			row++;
			column++;
			count++;
			if (count == HOW_MANY) 
				return true;
			
		}
		row = origalX - 1;
		column = origalY - 1;
		while (row >= 0 && column >= 0 && chess[column][row] == chessType) {
			row--;
			column--;
			count++;
			if (count == HOW_MANY) 
				return true;
			
		}
		row = origalX;
		column = origalY;
		return false;
	}
	
	public boolean isGameOver(int[][] chess, int row, int column, int chessType,
			int howMany){
		
		boolean one=acrossLine(chess, row, column, chessType, howMany);
		boolean two=upRightLine(chess, row, column, chessType, howMany);
		boolean three=leftBais(chess, row, column, chessType, howMany);
		boolean four=rightBias(chess, row, column, chessType, howMany);
		if(one||two||three||four)
			return true;
		return false;
		
	}

}