// <summary>
// Cast a ray from the middle of the player's screen and detects whether
// the player is looking at a cart or not.
// </summary>
private void HandleRaycasting()
{
playerLookRay = mainCamera.ViewportPointToRay(screenCenter);
layerMask = LayerMask.GetMask(cartLayerName);
isLookingAtCart = Physics.Raycast(playerLookRay, out hitCart, maxDistanceGrab, layerMask);
Debug.DrawLine(playerLookRay.origin, hitCart.point);
if (isLookingAtCart)
{
cartLastLookedAt = hitCart.transform;
cartLastLookedAtCart = cartLastLookedAt.GetComponent <Cart>();
// Activate the outline if the player is looking at cart
// it can grab.
if (!isHoldingCart)
{
cartLastLookedAtCart.ActivateOutline();
}
// If we're not looking at a cart but we have looked at cart before,
// deactivate it's outline.
}
else if (cartLastLookedAt != null)
{
cartLastLookedAtCart.DeactivateOutline();
}
}
