private void MoveCellAccordingToRules(CellIndices indices)
{
if (board.CellIsAdjacentToEmpty(indices))
{
var moveToPos = board.GetEmptyCellPos();
board.SwapCells(indices, moveToPos);
view.NotifyOnCellMoved(indices, moveToPos);
}
}
public CellIndices GetMove()
{
var displacement = GetRandomNonDiagonalIndexDisplacement();
var adjacentCell = board.GetEmptyCellPos();
adjacentCell.column += displacement.column;
adjacentCell.row += displacement.row;
return(EnforceBoardBoundariesByMirroringMove(adjacentCell));
}
private Node[] GetSuccessorStates(Node state)
{
var generator = new MoveGenerator(state.board);
var moves = generator.GetMoves();
var successors = new Node[moves.Length];
for (int i = 0; i < moves.Length; ++i)
{
var board = new SquareBoard(state.board);
board.SwapCells(board.GetEmptyCellPos(), moves[i]);
var successorCost = state.Cost() + 1;
successors[i] = new Node
(
board,
successorCost,
board.GetManhattanDistFromCompletion() + successorCost,
state,
moves[i]
);
}
return(successors);
}
private bool IsNotLowerRightCell(CellIndices indices)
{
return(board.GetEmptyCellPos() != indices);
}