> For the complete documentation index, see [llms.txt](https://roar.gitbook.io/roar_py-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://roar.gitbook.io/roar_py-documentation/basics/world-objects.md).

# World Objects

A `RoarPyWorld` object exposes useful information and methods about the underlying simulator / world.

For example, in carla implementation of ROAR\_PY, it exposes `maneuverable_waypoints` property, which provides a list of waypoints that can be used to traverse the underlying carla map. It also exposes other things that are specific to carla such as converting a location in the simulator to its geolocation.

The most important thing about world objects is that **they have to be ticked**. It is extremely important to call `await RoarPyWorld.step()` because they may have wrapped some important communication / sdk underneath. 

{% hint style="info" %}
While it is possible that some implementations have left this method not do anything,  we recommend calling the step function every control step regardless to ensure compatibility.
{% endhint %}