void Update()
{
RaycastHit hit; // This is where we store out hit data from the raycast
// We shoot a raycast forward from the camera
if (Physics.Raycast(transform.position, transform.TransformDirection(Vector3.forward), out hit, Mathf.Infinity))
{
// We check to see if we hit a point of interest button
if (hit.collider.gameObject.tag == "POIButton")
{
POIButton curButton = hit.collider.gameObject.GetComponent <POIButton>(); // We store the button for ease of access
// We check to see if the button isn't already in our view
if (!curButton.inView)
{
// We check to see if we were just looking at a different button
if (POILookingAt)
{
POILookingAt.OnHoverExit(); // We tell that button we just hovered off of it
POILookingAt.inView = false; // We tell the button that it is no longer in view
}
POILookingAt = curButton; // We tell the camera which button it's looking at
curButton.inView = true; // We tell the button we are looking at it
curButton.OnHoverEnter(); // We tell the button we have just hovered over it
}
}
// We check to see if the player is looking at a GUI button
if (hit.collider.gameObject.tag == "GUIButton")
{
GUIButton curButton = hit.collider.gameObject.GetComponent <GUIButton>(); // We cache the button to use it later
// We ensure the button isn't already looked at
if (!curButton.inView)
{
// We check to see if we were just looking at a different button
if (GUILookingAt)
{
GUILookingAt.OnHoverExit(); // We tell the other button we hovered off of it
GUILookingAt.inView = false; // We tell the other button that it is no longer in view
}
GUILookingAt = curButton; // We tell the camera we are now looking at this button
curButton.inView = true; // We tell the button it is now being looked at
curButton.OnHoverEnter(); // We tell the button we have just hovered over it
}
}
}
// We check to see if the camera can't see anything
else
{
// We check to see if we were looking at a POI button
if (POILookingAt)
{
POILookingAt.OnHoverExit(); // We tell the button we are no longer looking at it
POILookingAt.inView = false; // We tell the button it has left the centre of our view
POILookingAt = null; // We are no longer looking at any buttons
}
// We check to see if we were looking at any GUI buttons
if (GUILookingAt)
{
GUILookingAt.OnHoverExit(); // We tell the GUI button we aren't looking at it anymore
GUILookingAt.inView = false; // We also tell it that it has left our view
GUILookingAt = null; // We are no longer looking at any GUI buttons
}
}
}