private CollisionType ResolveMoveLeft(IFigure figure)
{
var collision = CollisionType.None;
figure.ForEachNonEmptyCell((i, j) =>
{
var absoluteLeft = figure.Placement.Left + i;
var absoluteTop = figure.Placement.Top + j;
if (absoluteLeft < 0)
{
collision = CollisionType.Borders;
return false;
}
if (!_gameField.GroundView[absoluteLeft, absoluteTop].IsEmptyCell())
{
collision = CollisionType.Ground;
return false;
}
return true;
});
return collision;
}
public void AttachFigureToTheGround(IFigure figure)
{
figure.ForEachNonEmptyCell((i, j) =>
{
var x = figure.Placement.Left + i;
var y = figure.Placement.Top + j;
var cell = _sprite[x, y];
if (!cell.IsEmptyCell())
throw new InvalidOperationException("can't attach figure to ground - it's already filled");
_sprite[x, y] = figure[i, j];
_peak = Math.Min(_peak, y);
});
var fullRows = FindFullRows();
foreach (var rowNumber in fullRows)
RemoveRow(rowNumber);
var rowsDeleted = fullRows.Length;
//todo: notify multiplayer that n rows were deleted
}
private CollisionType ResolveMoveDown(IFigure figure)
{
var collision = CollisionType.None;
figure.ForEachNonEmptyCell((i, j) =>
{
var absoluteX = figure.Placement.Left + i;
var absoluteY = figure.Placement.Top + j;
if (absoluteY > _gameField.Size.Height - 1)
{
collision = CollisionType.Ground;
return false;
}
if (absoluteY < 0)
return true;
if (_gameField.GroundView[absoluteX, absoluteY].IsEmptyCell())
return true;
collision = CollisionType.Ground;
if (figure.Placement.Top == 1) // a little bad assumpotion that figures always start at 0, and thatn moves down by 1
collision = CollisionType.Critical;
return false;
});
return collision;
}