IEnumerator FallTile(NumberTile tile)
{
if (tile.IsOnFloor())
{
yield break;
}
List <NumberTile> aboveTiles = NumberTile.FindActiveTilesInDirection(tile, Direction.up);
do
{
yield return(fallWait);
tile.MoveTile(Direction.down);
foreach (NumberTile aboveTile in aboveTiles)
{
aboveTile.MoveTile(Direction.down);
}
} while (!tile.IsOnFloor());
// Add tiles to the queue to process later
fallingTiles.Enqueue(tile);
foreach (NumberTile aboveTile in aboveTiles)
{
fallingTiles.Enqueue(aboveTile);
}
}
IEnumerator FallAndMergeTile(NumberTile tile)
{
yield return(FallTile(tile));
if (activeTile != null && tile == activeTile)
{
DisableControl();
}
if (fallingTiles.Count != 0)
{
yield return(new WaitForSeconds(0.2f));
}
List <NumberTile> mergedTiles = new List <NumberTile>();
while (fallingTiles.Count != 0)
{
NumberTile fallingTile = fallingTiles.Dequeue();
if (MergeNeighbourTiles(fallingTile, ref mergedTiles))
{
yield return(null);
// Play and wait for animation to finish
fallingTile.View.PlayUpdateAnimation();
yield return(new WaitForSeconds(1));
// Add the Tile again to see if it can merge with anything else
if (fallingTile.IsOnFloor())
{
fallingTiles.Enqueue(fallingTile);
}
}
}
Queue <Coroutine> fallingTilesQueue = new Queue <Coroutine>();
foreach (NumberTile mergedTile in mergedTiles)
{
NumberTile neighbour = NumberTile.TryFindActiveTopTile(mergedTile);
if (NumberTile.IsActiveTile(neighbour))
{
Coroutine c = StartCoroutine(FallAndMergeTile(neighbour));
fallingTilesQueue.Enqueue(c);
}
}
while (fallingTilesQueue.Count != 0)
{
yield return(fallingTilesQueue.Dequeue());
}
}