Update lua files

lua/entities/refoselbots_navigator.lua

@@ -79,11 +79,10 @@ end
 
 function ENT:InFOV(pos, fov)
 	local owner = self:GetOwner()
+	
+	if not IsValid(owner) then return false end
 
 	if IsEntity(pos) then
-		-- we must check eyepos and worldspacecenter
-		-- maybe in the future add more points
-
 		if PointWithinViewAngle(owner:EyePos(), pos:WorldSpaceCenter(), owner:GetAimVector(), fov) then
 			return true
 		end
@@ -95,22 +94,19 @@ function ENT:InFOV(pos, fov)
 end
 
 function ENT:CanSee(ply, fov)
+	local owner = self:GetOwner()
+	if not IsValid(owner) then return false end
+	
 	if ply:GetPos():DistToSqr(self:GetPos()) > self:GetMaxVisionRange() * self:GetMaxVisionRange() then
 		return false
 	end
 
-	-- TODO: check fog farz and compare with distance
-
-	-- half fov or something
-	-- probably should move this to a variable
 	fov = fov or true
 
 	if fov and !self:InFOV(ply, math.cos(0.5 * (self:GetFOV() or 90) * math.pi / 180)) then
 		return false
 	end
 
-	-- TODO: we really should check worldspacecenter too
-	local owner = self:GetOwner()
 	return util.QuickTrace(owner:EyePos(), ply:EyePos() - owner:EyePos(), {owner, self}).Entity == ply
 end