/// <summary>
/// Mouse has been clicked on the canvas. Depending on the radio button that is active either
/// - Add a new hex
/// - Select (or unselect a hex). If shift is held select multiple
/// - Delete a hex
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void cnv_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
//TODO add some sort of undo feature here - deleting hexes and not being able to recover them may be very bad down the line
//Unselect the hex before adding or deleting
if (!_selectButton.IsChecked ?? true)
{
_selectedHexes = new List <Hex>();
}
// Determine which point was clicked after calculating offset
var clickedPoint = new Point(e.GetPosition(_canvas).X - +_offset.X, e.GetPosition(_canvas).Y - _offset.Y);
if (_addButton.IsChecked ?? false)
{
//Add a new hex under the mouse if one does not already exist - if one exists do nothing
var cubicCoords = HexUtils.CartesianToCubic(Utils.PointToPoint(clickedPoint), _hexMap.Orientation, _hexMap.Width);
try {
_hexMap.AddHex(cubicCoords);
}
catch (ArgumentException) {
//This means a hex already exists at that location
Console.WriteLine($"Not adding hex at {cubicCoords} as it already exists");
}
Console.WriteLine($"Adding hex at {cubicCoords}");
}
else if (_selectButton.IsChecked ?? false)
{
//Select the hex under the mouse if it exists
var key = HexUtils.CartesianToCubic(Utils.PointToPoint(clickedPoint), _hexMap.Orientation, _hexMap.Width);
if (_hexMap.Hexes.ContainsKey(key))
{
var clickedHex = _selectedHexes.FirstOrDefault(hex => hex.Coordinate.Equals(key));
if (clickedHex != null)
{
if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
//CLicked on a hex that is already selected - unselect it
_selectedHexes.Remove(clickedHex);
}
else
{
if (_selectedHexes.Count > 1)
{
//Multiple hexes are selected so deselect all of them except for the one clicked
_selectedHexes = new List <Hex>()
{
_hexMap.Hexes[key]
};
}
else
{
_selectedHexes.Clear();
}
}
}
else
{
//Check if selecting multiple hexes
if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
_selectedHexes.Add(_hexMap.Hexes[key]);
}
else
{
_selectedHexes = new List <Hex>()
{
_hexMap.Hexes[key]
};
}
}
RedrawHexes();
}
}
else if (_deleteButton.IsChecked ?? false)
{
//Delete the hex that was clicked
var key = HexUtils.CartesianToCubic(Utils.PointToPoint(clickedPoint), _hexMap.Orientation, _hexMap.Width);
if (_hexMap.Hexes.ContainsKey(key))
{
_hexMap.Hexes.Remove(key);
RedrawHexes();
}
}
else
{
Console.WriteLine("Error - no radio buttons are selected?? or all of them are null somehow");
}
RedrawHexes();
}
