C++ Code to Restart a level?

[SylenthX]

Hello everyone, I am creating a game where the player has to use physics to navigate the level, such as stacking objects to create stairs to get to a point, etc. In said game, the player can accidently drop objects off the level or get them destroyed by other forces. I would like to implement a feature where the player can hit a key and the level and all scripts, lighting, etc. is reloaded. This code must be in C++. How can I do this? Please help. Thanks.

[AggrorJorn]

Pseudo:

 

if (window->Key:R)
{
 world:Clear();
 Map::Load("Maps/start.map");
}

 

Note that when you clear a world, you also remove the cameras. So if your camera is created via code in the start level, you will also need to create a new camera via code.