private void ChangeCell(Cell cell, Stone stone, Direction direction)
{
Cell next = cell;
//1つ上に石がある間続ける
while ((next = next.GetNextCell(direction)) != null && next.HasStone)
{
//自分と違う色なら色を変える
if (stone.Color != next.Stone.Color)
{
next.Change();
}
else
{
return;
}
}
}
