/// <summary>
/// Tries to clear the <see cref="Cell"/> at (<paramref name="x"/>, <paramref name="y"/>).
/// </summary>
/// <param name="x">The 0-based column number of a <see cref="Cell"/></param>
/// <param name="y">The 0-based row number of a <see cref="Cell"/></param>
/// <param name="changedCells">The list of <see cref="Cell"/>s affected by this clear action. Data about changed <see cref="Cell"/>s is provided via <see cref="ChangedCell"/>.</param>
/// <returns>true if the <see cref="Cell"/> at (<paramref name="x"/>, <paramref name="y"/>) is safe to clear (not a mine), false otherwise</returns>
public static bool TryClearCell(int x, int y, ref List <ChangedCell> changedCells)
{
var coord = new Coordinate(x, y);
if (CurrentField.Clear(coord))
{
var cell = CurrentField[coord];
if (!cell.Flagged)
{
changedCells.Add(new ChangedCell(coord, cell.NeighboringMines));
if (cell.NeighboringMines == 0)
{
changedCells.AddRange(ClearLonelyNeighbors(coord));
}
}
CheckGameWon();
return(true);
}
else
{
timer.Stop();
GameEnd?.Invoke(false);
return(false);
}
}
/// <summary>
/// Checks if the current field has been correctly cleared. Stops timer and sets <see cref="GameWon"/> if so
/// </summary>
/// <remarks>
/// Checks if <see cref="CurrentField"/>'s <see cref="MineField.MinesLeft()"/> == 0 and <see cref="CurrentField"/>'s <see cref="MineField.CellsLeft()"/> == 0
/// </remarks>
public static void CheckGameWon()
{
if (CurrentField.MinesLeft() == 0 && CurrentField.CellsLeft() == 0)
{
timer.Stop();
GameEnd?.Invoke(true);
}
}