message: Replace expensive `pow` function with squaring
  This is easy to do when you have easy access to each component delta.
diff: @@ -58,7 +58,7 @@ bool Planet::pointInArea(NAS2D::Point<int> point)
  // Standard point in circle equation. Magic numbers for a circle diameter of 128.
  // Note: assumes all values are always positive.
  const auto offset = point - mPosition - PlanetSize / 2;
  - return (pow(offset.x, 2) + pow(offset.y, 2) <= 4096);
  + return ((offset.x * offset.x) + (offset.y * offset.y) <= 4096);
  }
  