public IEnumerable <RayTrigger> CheckCollision(LayerMask mask)
{
if (Up.CheckCollision(mask))
{
yield return(Up);
}
if (Down.CheckCollision(mask))
{
yield return(Down);
}
if (Left.CheckCollision(mask))
{
yield return(Left);
}
if (Right.CheckCollision(mask))
{
yield return(Right);
}
yield break;
}
