void FixedUpdate()
{
if (completed)
{
return;
}
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
Debug.DrawRay(ray.origin, ray.direction * 100f, Color.red);
RaycastHit hit;
if (Physics.Raycast(ray, out hit))
{
Star star = hit.transform.gameObject.GetComponent <Star>();
if (star)
{
// For first star hovered, just add it as first point in the line
if (!previous)
{
ActivateStar(star);
}
// For rest of stars, add point to line if star was not the previous star
// Additionally, add edge to graph structure for checking completion
else if (star != previous)
{
constellation.AddEdge(previous, star);
ActivateStar(star);
// If this edge completes the constellation, give visual indication
if (constellation.IsComplete())
{
completed = true;
line.positionCount--;
foreach (Star s in constellation.GetStars())
{
s.Activate();
}
return;
}
}
previous = star;
}
}
// Draw line to mouse position, so it looks like user is holding a thread connecting the stars
Vector3 mousePos = Input.mousePosition;
mousePos.z = transform.localPosition.z;
mousePos = Camera.main.ScreenToWorldPoint(mousePos);
mousePos = transform.InverseTransformPoint(mousePos);
SetLastLinePoint(mousePos);
}
