private async Task <MovingValidationResult> CanMoveDownAsync(GameGrid area, Figure figure)
{
Point[] position = await figure.GetPositionWithOffsetAsync();
List <Point> bottomPoints = position
.GroupBy(point => point.X, point => point.Y, (x, ys) => new Point(x, ys.Max()))
.ToList();
List <GameCell> cells = area.ToList();
foreach (Point bottomPoint in bottomPoints)
{
int bottomBorder = cells
.Where(cell => cell.Location.X == bottomPoint.X && cell.IsOccupiedWithNotFigure)
.Where(cell => cell.Location.Y > bottomPoint.Y).Select(cell => cell.Location.Y)
.DefaultIfEmpty(area.Height).Min();
if (bottomBorder == bottomPoint.Y + 1)
{
return(new MovingValidationResult {
Dead = true
});
}
}
return(new MovingValidationResult {
Allow = true
});
}
private async Task <MovingValidationResult> CanMoveLeftAsync(GameGrid area, Figure figure)
{
Point[] position = await figure.GetPositionWithOffsetAsync();
List <Point> leftPoints = position
.GroupBy(point => point.Y, point => point.X, (y, xs) => new Point(xs.Min(), y))
.ToList();
List <GameCell> cells = area.ToList();
foreach (Point leftPoint in leftPoints)
{
int rightBorder = cells
.Where(cell => cell.Location.Y == leftPoint.Y && cell.IsOccupiedWithNotFigure)
.Where(cell => cell.Location.X < leftPoint.X).Select(cell => cell.Location.X)
.DefaultIfEmpty(-1).Max();
if (rightBorder == leftPoint.X - 1)
{
return(new MovingValidationResult {
Allow = false
});
}
}
return(new MovingValidationResult {
Allow = true
});
}