private void OnMouseUp()
{
Collider2D[] results = new Collider2D[1];
ContactFilter2D filter = new ContactFilter2D();
filter.SetLayerMask(houseLayer);
coll.OverlapCollider(filter, results);
if (results[0] != null && results[0].GetComponent <House>())
{
House h = results[0].GetComponent <House>();
if (h.AtCapacity())
{
transform.position = start;
}
else
{
h.AddPerson(this);
}
}
}