sergi-e/issues_06 (#3005)

* Brief additions

* Fix on Light manager docs

Docs/build_faq.md

@@ -89,6 +89,21 @@ __1.__ Go to `carla/Unreal/CarlaUE4` and right-click the `CarlaUE4.uproject`.
 __2.__ Click on __Generate Visual Studio project files__.  
 __3.__ Open the file generated with Visual Studio 2017.  
 __4.__ Compile the project with Visual Studio. The shortcut is F7. The build will fail, but the issues found will be shown below.
+
+Different issues may result in this specific error message. The user [@tamakoji](https://github.com/tamakoji) solved a recurrent case where the source code hadn't been cloned properly and the CARLA version could not be set (when downloading this as a .zip from git).  
+
+*   __Check the `Build/CMakeLists.txt.in`.__ If it shows like `set(CARLA_VERSION )` do the following.  
+
+__1.__ Go to `Setup.bat` line 198.  
+
+__2.__ Update the line from: 
+```sh
+for /f %%i in ('git describe --tags --dirty --always') do set carla_version=%%i
+```
+to:
+```sh
+for /f %%i in ('git describe --tags --dirty --always') do set carla_version="0.9.9"
+```
   </details>
 
 <!-- ======================================================================= -->

Docs/python_api.md

@@ -2496,7 +2496,7 @@ Returns a list of actor blueprints available to ease the spawn of these into the
 - <a name="carla.World.get_vehicles_light_states"></a>**<font color="#7fb800">get_vehicles_light_states</font>**(<font color="#00a6ed">**self**</font>)  
 Returns a dict where the keys are [carla.Actor](#carla.Actor) IDs and the values are [carla.VehicleLightState](#carla.VehicleLightState) of that vehicle.  
     - **Return:** _dict_  
-- <a name="carla.World.get_light_manager"></a>**<font color="#7fb800">get_light_manager</font>**(<font color="#00a6ed">**self**</font>)  
+- <a name="carla.World.get_lightmanager"></a>**<font color="#7fb800">get_lightmanager</font>**(<font color="#00a6ed">**self**</font>)  
 Returns an instance of [carla.LightManager](#carla.LightManager) that can be used to handle the lights in the scene.  
     - **Return:** _[carla.LightManager](#carla.LightManager)_  
 - <a name="carla.World.get_map"></a>**<font color="#7fb800">get_map</font>**(<font color="#00a6ed">**self**</font>)  

Docs/ref_sensors.md

@@ -481,8 +481,7 @@ for location in lidar_measurement:
     print(location)
 ```
 
-!!! Tip
-    Running the simulator at [fixed time-step](adv_synchrony_timestep.md) it is possible to tune the rotation for each measurement. Adjust the step and the rotation frequency to get, for instance, a 360 view each measurement.
+The rotation of the LIDAR can be tuned to cover a specific angle on every simulation step (using a [fixed time-step](adv_synchrony_timestep.md)). For example, to rotate once per step (full circle output, as in the picture below), the rotation frequency and the simulated FPS should be equal. <br> __1.__ Set the sensor's frequency `sensors_bp['lidar'][0].set_attribute('rotation_frequency','10')`. <br> __2.__ Run the simulation using `python config.py --fps=10`.  
 
 ![LidarPointCloud](img/lidar_point_cloud.gif)
 

PythonAPI/docs/world.yml

@@ -313,7 +313,7 @@
       doc: >
         Returns a dict where the keys are carla.Actor IDs and the values are carla.VehicleLightState of that vehicle.
     # --------------------------------------
-    - def_name: get_light_manager
+    - def_name: get_lightmanager
       return: carla.LightManager
       doc: >
         Returns an instance of carla.LightManager that can be used to handle the lights in the scene.