/// <summary>
/// 构造初始布局
/// </summary>
/// <param name="layoutCode">布局数值</param>
/// <param name="blankPosition1">空白棋子1位置</param>
/// <param name="blankPosition2">空白棋子2位置</param>
public PathFinder(long layoutCode, int blankPosition1, int blankPosition2)
{
this.StepCodeDict = new Dictionary <long, long>(0);
this.InitLayoutCode = layoutCode;
this.InitBlankPosition = new BlankPosition {
Position1 = blankPosition1, Position2 = blankPosition2
};
}
/// <summary>
/// 移动棋子到新的位置
/// </summary>
/// <param name="chess">待移动的棋子</param>
/// <param name="moveDirection">移动方向</param>
/// <param name="newBlankPosition">新的空白格子</param>
private void MoveChessToNext(ChessBase chess, Direction moveDirection, BlankPosition newBlankPosition)
{
int oldPosition = chess.Position;
int newPosition = chess.NextPosition;
this.BlankPosition = chess.ChessMove(newBlankPosition, moveDirection, Common.GridColumns);
chess.Position = chess.NextPosition;
this.MoveAnimation(chess.Element, newPosition, oldPosition, moveDirection);
}
/// <summary>
/// 释放相关资源
/// </summary>
private void Dispose()
{
this.StepCodeDict.Clear();
this.StepCodeDict = null;
this.InitLayoutCode = 0;
this.InitBlankPosition = new BlankPosition {
Position1 = -1, Position2 = -1
};
this.NextNodeList.Clear();
this.NextNodeList = null;
GC.Collect();
}
/// <summary>
/// 尝试将棋子移动到下一个指定的位置
/// </summary>
/// <param name="chess">待移动的棋子</param>
/// <param name="moveDirection">移动方向</param>
/// <param name="newBlankPosition">新的空白格子</param>
private void TryMoveToNext(ChessBase chess, Direction moveDirection, BlankPosition newBlankPosition)
{
List <ChessBase> chessList = this.CurrentNode.CurrentCode.GetChessList();
chessList[this.ChessIndex].Position = chess.NextPosition;
long nodeCode = chessList.GetLayoutCode();
if (nodeCode != this.CurrentNode.ParentCode && !this.StepCodeDict.Keys.Contains(nodeCode))
{
PathNode node = new PathNode
{
CurrentCode = nodeCode,
ParentCode = this.CurrentNode.CurrentCode,
//BlankPosition = chess.ChessMove(this.CurrentNode.BlankPosition, moveDirection, Common.GridColumns),
BlankPosition = chess.ChessMove(newBlankPosition, moveDirection, Common.GridColumns),
IsLast = chessList.LayoutFinished()
};
this.NextNodeList.Add(node);
}
}