private bool IsValidGridPos()
{
foreach (Transform child in transform)
{
Vector2 v = Playfield.RoundVec2(child.position);
if (!Playfield.IsInsideBorder(v))
{
return(false);
}
if (Playfield.grid[(int)v.x, (int)v.y] != null &&
Playfield.grid[(int)v.x, (int)v.y].parent != transform)
{
return(false);
}
}
return(true);
}