> For the complete documentation index, see [llms.txt](https://asrob-uc3m.gitbook.io/robotdevastation-developer-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://asrob-uc3m.gitbook.io/robotdevastation-developer-manual/robotdevastation/managers/input-management/creating-events.md).

# Creating Events

When a class, such as the `InputManager` needs to send input events, such as keypresses, it creates them using their constructor:

```cpp
Key k('A'); //-- Create a printable Key
Key k2(Key::KEY_ARROW_UP); //-- Create a control key
```

Some implementations, such as the SDL input backend, receive input events from SDL as SDL types (i.e. SDL\_Keycode, SDL\_WindowEvent). To create Robot Devastation input events from them, the `SDLEventFactory` can be used. It follows the [factory pattern](https://en.wikipedia.org/wiki/Factory_method_pattern), owning a table to convert from SDL types to the corresponding `Key`.

Once created, they can be sent to the corresponding listeners, either manually o through the helper methods present in the `MockInputManager`.