protected virtual async SysTask KnightSwapTask(TileController firstTile, TileController secondTile)
{
Vector2Int travelVec = secondTile.BoardPos - firstTile.BoardPos;
// Pull off all the horizontal swaps before the vertical ones
while (travelVec.x != 0)
{
// Find the appropriate adjacent tile, swap the first one with it, and update
// the travelVec accordingly.
int xOffset = (int)Mathf.Sign(travelVec.x);
Vector2Int otherTilePos = firstTile.BoardPos;
otherTilePos.x += xOffset;
TileController toSwapWith = tileBoard.GetTileAt(otherTilePos);
await AdjacentSwapTask(firstTile, toSwapWith);
travelVec.x -= xOffset; // Bring the value closer to 0
}
// Similar logic for the vertical swaps
while (travelVec.y != 0)
{
int xOffset = (int)Mathf.Sign(travelVec.y);
Vector2Int otherTilePos = firstTile.BoardPos;
otherTilePos.y += xOffset;
TileController toSwapWith = tileBoard.GetTileAt(otherTilePos);
await AdjacentSwapTask(firstTile, toSwapWith);
travelVec.y -= xOffset;
}
}
IList <TileController> GetValidTilesAtPositions(IList <Vector2Int> tilePositions)
{
IList <TileController> validTiles = new List <TileController>();
foreach (Vector2Int position in tilePositions)
{
TileController tile = gameBoard.GetTileAt(position);
if (TileIsValid(tile))
{
validTiles.Add(tile);
}
}
return(validTiles);
}
