Normalized left for pointer lock controls

src/controls.rs

@@ -324,7 +324,7 @@ impl Controls for FirstPersonControls {
                     self.phi.cos() * self.theta.sin(),
                 );
 
-                self.left = Vector3::new(0.0, 1.0, 0.0).cross_product(self.forward);
+                self.left = Vector3::new(0.0, 1.0, 0.0).cross_product(self.forward).normalized();
 
                 // Move the cursor back to the center
                 renderer