private void CheckBottomCell(Cell cell, ref List <Cell> adjacenedCells)
{
Cell bottomCell;
if (cell.GetY() < _grid.GetLength(0))
{
bottomCell = _grid[cell.GetX(), cell.GetY() + 1];
if (!bottomCell.IsWall() && !_closedList.Contains(bottomCell))
{
bottomCell.Parent = cell;
adjacenedCells.Add(bottomCell);
}
}
}
private void CheckTopCell(Cell cell, ref List <Cell> adjacenedCells)
{
Cell topCell;
if (cell.GetY() - 1 > 0)
{
topCell = _grid[cell.GetX(), cell.GetY() - 1];
if (!topCell.IsWall() && !_closedList.Contains(topCell))
{
topCell.Parent = cell;
adjacenedCells.Add(topCell);
}
}
}
private void CheckRightCell(Cell cell, ref List <Cell> adjacenedCells)
{
Cell rightCell;
if (cell.GetX() < _grid.GetLength(1) - 1)
{
rightCell = _grid[cell.GetX() + 1, cell.GetY()];
if (!rightCell.IsWall() && !_closedList.Contains(rightCell))
{
rightCell.Parent = cell;
adjacenedCells.Add(rightCell);
}
}
}
private void CheckLeftCell(Cell cell, ref List <Cell> adjacenedCells)
{
Cell leftCell;
if (cell.GetX() > 0)
{
leftCell = _grid[cell.GetX() - 1, cell.GetY()];
if (!leftCell.IsWall() && !_closedList.Contains(leftCell))
{
leftCell.Parent = cell;
adjacenedCells.Add(leftCell);
}
}
}
public bool IsNextTo(Cell other)
{
#region Validation
if (other == null)
{
throw new ArgumentNullException("Cell invalid");
}
#endregion
int xDiff = Math.Abs(this.GetX() - other.GetX());
int yDiff = Math.Abs(this.GetY() - other.GetY());
return(xDiff + yDiff < 2 && xDiff + yDiff != 0);
}
private int CalculateManhattanHeuristics(Cell cell1, Cell cell2)
{
return(Math.Abs(cell1.GetX() - cell2.GetX()) + Math.Abs(cell1.GetY() - cell2.GetY()));
}