public static Cell GetCell(this Cell[,] grid, double positionX, double positionY)
{
int gridColumn = (int)Math.Floor(positionX / Map.CellSize);
int gridRow = (int)Math.Floor(positionY / Map.CellSize);
return(grid.GetCell(gridColumn, gridRow));
}
public static IEnumerable <Cell> GetTouchingCells(this Cell[,] grid, Vector position, double radius)
{
return(new[]
{
grid.GetCell(position.X + radius, position.Y - radius),
grid.GetCell(position.X - radius, position.Y + radius),
grid.GetCell(position.X + radius, position.Y + radius),
grid.GetCell(position.X - radius, position.Y - radius),
grid.GetCell(position.X + radius, position.Y),
grid.GetCell(position.X - radius, position.Y),
grid.GetCell(position.X, position.Y + radius),
grid.GetCell(position.X, position.Y - radius)
}.Distinct());
}
public static Cell GetCell(this Cell[,] grid, Vector position)
{
return(grid.GetCell(position.X, position.Y));
}
