public async Task PlayAnimation(TransformInfo[,] transformations)
{
#region
if (_cellsContainer == null)
{
_cellsContainer = GetItemsPanel(GameBoard) as UniformGrid;
Debug.Assert(_cellsContainer != null);
foreach (var i in Range(0, Game.BoardHeight))
{
foreach (var j in Range(0, Game.BoardWidth))
{
var content = _cellsContainer.Children[new Coordinate(i, j).ToIndex()] as ContentPresenter;
_grids[i, j] = content.ContentTemplate.FindName("CellGrid", content) as Grid;
Debug.Assert(_grids[i, j] != null);
}
}
}
#endregion
storyBoard.Children.Clear();
foreach (var i in Range(0, transformations.GetLength(0)))
{
foreach (var j in Range(0, transformations.GetLength(1)))
{
if (transformations[i, j].Destination != Coordinate.Nowhere)
{
var des = transformations[i, j].Destination;
var wasNew = transformations[i, j].WasNew;
var tempCell = new GridCell();
tempCell.Number = transformations[i, j].PreviousNumber;
var srcGrid = _grids[i, j];
gridsHaveTempCell.Add(srcGrid);
srcGrid.Children.Add(tempCell);
var desGrid = _grids.GetValue(des);
var srcPos = srcGrid.PointToScreen(new Point(0d, 0d));
var desPos = desGrid.PointToScreen(new Point(0d, 0d));
var xDist = desPos.X - srcPos.X;
var yDist = desPos.Y - srcPos.Y;
var xAnimation = new DoubleAnimation(xDist, new Duration(new TimeSpan(0, 0, 0, 0, Math.Abs((int)(xDist)))));
var yAnimation = new DoubleAnimation(yDist, new Duration(new TimeSpan(0, 0, 0, 0, Math.Abs((int)(yDist)))));
var translate = new TranslateTransform();
tempCell.RenderTransform = translate;
var transformName = $"TranslateTransform{i}{j}";
transformNames.Add(transformName);
RegisterName(transformName, translate);
Storyboard.SetTargetName(xAnimation, transformName);
Storyboard.SetTargetName(yAnimation, transformName);
Storyboard.SetTargetProperty(xAnimation, new PropertyPath(TranslateTransform.XProperty));
Storyboard.SetTargetProperty(yAnimation, new PropertyPath(TranslateTransform.YProperty));
storyBoard.Children.Add(xAnimation);
storyBoard.Children.Add(yAnimation);
}
}
}
//将动画的起点全部归 0。
_viewModel.PreUpdate(transformations);
await storyBoard.BeginAsync(this);
//动画播放完毕后，更新。
_viewModel.Update();
storyBoard.Children.Clear();
ProcessEggAnimation(transformations);
//清理掉新的 GridCell。
foreach (Grid grid in gridsHaveTempCell)
{
var children = grid.Children;
children.RemoveRange(1, children.Count - 1);
}
foreach (var name in transformNames)
{
UnregisterName(name);
}
transformNames.Clear();
gridsHaveTempCell.Clear();
}