public static IList<Tile> Neighbors(Tile tile, int size)
{
var neighbors = new List<Tile>();
// Top Left
neighbors.Add(new Tile { X = tile.X - 1, Y = tile.Y - 1, Position = tile.Position - (size + 1) });
// Left
neighbors.Add(new Tile { X = tile.X - 1, Y = tile.Y, Position = tile.Position - 1 });
// Bottom Left
neighbors.Add(new Tile { X = tile.X - 1, Y = tile.Y + 1, Position = tile.Position + (size - 1) });
// Top
neighbors.Add(new Tile { X = tile.X, Y = tile.Y - 1, Position = tile.Position - size });
// Bottom
neighbors.Add(new Tile { X = tile.X, Y = tile.Y + 1, Position = tile.Position + size });
// Top Right
neighbors.Add(new Tile { X = tile.X + 1, Y = tile.Y - 1, Position = tile.Position - (size - 1) });
// Right
neighbors.Add(new Tile { X = tile.X + 1, Y = tile.Y, Position = tile.Position + 1 });
// Bottom Right
neighbors.Add(new Tile { X = tile.X + 1, Y = tile.Y + 1, Position = tile.Position + (size + 1) });
neighbors.RemoveAll(t => t.X < 0 || t.Y < 0 || t.X >= size || t.Y >= size);
return neighbors;
}
void SetFlag(Tile tile)
{
var layout = _subViews[tile.Position];
if(tile.Flagged)
{
if (!_checked.Any(t => t.Position == tile.Position)) _checked.Add(tile);
var img = new ImageView(this);
img.SetImageResource(Resource.Drawable.flag);
layout.AddView(img);
}
else
{
if (_checked.Any(t => t.Position == tile.Position)) _checked.Remove(_checked.First(t => t.Position == tile.Position));
//layout.SetBackgroundColor(Resources.GetColor(Resource.Color.white));
layout.RemoveAllViews();
}
}
void ShowTiles(LinearLayout layout, Tile tile)
{
if(tile.Neighbors == 0)
ClearNeighbors(layout, tile);
else
DisplayNeighborCount(layout, tile.Neighbors);
}
void ClearNeighbors(LinearLayout tileLayout,Tile tile)
{
Flip(tileLayout);
foreach(var n in Helpers.Neighbors(tile, _size))
{
if(_checked.Any(t => t.Position == n.Position)) continue;
_checked.Add(n);
n.Neighbors = Helpers.CountNeighbors(_mines, n.X, n.Y);
var layout = _subViews[n.Position];
ShowTiles(layout, n);
}
}
void TileLongClick (object sender, View.LongClickEventArgs e)
{
// Set/Release flag
var tileLayout = (LinearLayout)sender;
var position = _grid.IndexOfChild(tileLayout);
var tile = _checked.FirstOrDefault(t => t.Position == position);
if(tile == null)
{
int numberOfColumns = _grid.ColumnCount;
int row = Convert.ToInt32(Math.Floor((double)(position/numberOfColumns)));
int column = position - (row * numberOfColumns);
var neighbors = Helpers.CountNeighbors(_mines, column, row);
tile = new Tile { X = column, Y = row, Neighbors = neighbors, Position = position };
}
tile.Flagged = !tile.Flagged;
//_checked.Where(t => t.Position == position).First() = tile;
SetFlag(tile);
}
void TileClick (object sender, EventArgs e)
{
var tileLayout = (LinearLayout)sender;
var position = _grid.IndexOfChild(tileLayout);
int numberOfColumns = _grid.ColumnCount;
int row = Convert.ToInt32(Math.Floor((double)(position/numberOfColumns)));
int column = position - (row * numberOfColumns);
var neighbors = Helpers.CountNeighbors(_mines, column, row);
var tile = new Tile { X = column, Y = row, Neighbors = neighbors, Position = position };
_checked.Add(tile);
if(_mines.Exists(m => m.X == column && m.Y == row))
{
// You lose :(
tileLayout.SetBackgroundColor(Color.Red);
foreach(var v in _subViews)
{
var p = _grid.IndexOfChild(v);
if(_checked.Any(t => t.Position == p)) continue;
v.Click -= TileClick;
v.LongClick -= TileLongClick;
}
}
else
{
ShowTiles(tileLayout, tile);
UpdateScore();
}
}