During the update process, the game will be in a certain mode. At one point, for example, it will create a new game. During this part, it has to load a level map and create the player's powerful machine. Without it, there is no way to push the huge crates around inside the storage area.

It is always a good practice to organize these tasks in their own functions or methods. Maybe you are wondering why I mainly use methods inside classes for this. Well, it is more of a personal preference, as well as a feature, that a method can interface a field of a class to make it easier or shorter, if desired.