// Clears any currently selected object and calls on exit if there is one.
private void ClearCurrentObject()
{
// Check if there's a current object.
if (currentRaycastObject != null)
{
// If so, call OnExit on that object and clear the variable.
currentRaycastObject.OnRaycastExit();
currentRaycastObject = null;
}
}
// Performs the raycast and affects any raycasted objects.
public void ProcessRaycast()
{
// Set the origin of the raycast line renderer.
raycastLine.SetPosition(0, transform.position);
// Create a ray to raycast with.
Ray raycastRay = new Ray(transform.position, transform.forward);
// Variable to store the result of the raycast.
RaycastHit hitInfo;
// Show a debug line in the editor.
Debug.DrawRay(raycastRay.origin, raycastRay.direction);
// Do the raycast and store the result in hitInfo.
if (Physics.Raycast(raycastRay, out hitInfo))
{
// If we hit something, update the raycast to end at that object.
raycastLine.SetPosition(1, hitInfo.point);
// Store the hit object.
GameObject hitObj = hitInfo.collider.gameObject;
// Get the raycast interactable script from the object (if it has one).
RaycastInteractableObject gazeObj = hitObj.GetComponent <RaycastInteractableObject>();
// If it does have the interactable script, interact with the object.
if (gazeObj != null)
{
// Update the raycast hit color.
SetRaycastColor(raycastHitColor);
// If we aren't looking at the same object as last frame, update the past/present objects.
if (gazeObj != currentRaycastObject)
{
// Clear the previous object.
ClearCurrentObject();
// Set the new object.
currentRaycastObject = gazeObj;
// Call OnEnter.
currentRaycastObject.OnRaycastEnter(hitInfo);
}
// If we ARE looking at the same object, just call it's OnRaycast() function.
else
{
// Call the hold function.
currentRaycastObject.OnRaycast(hitInfo);
}
}
// If we aren't looking at a valid interactable object, clear the previous object.
else
{
// Clear previous object.
ClearCurrentObject();
}
}
// If we aren't looking at any physics object, clear previous object and update line renderer.
else
{
// Make line renderer stretch out to infinity (kinda).
raycastLine.SetPosition(1, transform.forward * 1000.0f);
SetRaycastColor(raycastMissColor);
// Clear any active object, if there is one.
ClearCurrentObject();
}
// Check for user input.
CheckForInput(hitInfo);
}
