restore old distance implementation

Author: mFragaBA

apps/bot_manager/lib/math/vector.ex

@@ -56,12 +56,11 @@ defmodule BotManager.Math.Vector do
     }
   end
 
-  def distance(x, y) do
-    sub(x, y)
-    |> norm()
-  end
-
   def deg2rad(deg) do
     deg * :math.pi() / 180
   end
+
+  def distance(%{x: x1, y: y1}, %{x: x2, y: y2}) do
+    :math.sqrt(:math.pow(x2 - x1, 2) + :math.pow(y2 - y1, 2))
+  end
 end