# The Game module

The `Game` class is probably the most important class in this architecture,
since it is the class you will get as a parameter in your AI. Your AI will need
to analyse the game in order to take a decision that will make it win.

It contains the size of the game, the [Map](/wiki/Map)s of each step of the
game, the players, and can run.

Before detailling the content of the `Game` class, we first need to describe
some other classes in the same module.

## The `PositionPlayer` class

*Yes, this is a really poor name, but I had no imagination for that one...*

Basically, this class contains the things that the game needs to know about the
player:
   - the `player` attribute is the one corresponding to the player described in
     the [player section](/wiki/Player) (which serves the purpose of the AI)
   - the `position` attribute is the current position of the player
   - the `id` is a number (between 1 and 2) that allows the game to know which
     player we are talking about
   - the `alive` attribute is a boolean which allows the game to know if the
     player is still alive so it can know if the game ended and which player
     has won

It also contains two methods, `head` and `body` which returns the tile the
corresponding to the head or the body of the given player.

## The `HistoryElement` class

This class desribes the elements you will find in the game history. It contains
the directions that were given by the players, and the state of the map after
the turn.

## And finally, the `Game` class

This class contains:
  - the width and height of the game, which are integers
  - the history of the states of the game, which is an array of
    `HistoryElement`s that we described in the previous section
  - the `PositionPlayer`s of the game (in the `pps` attribute), which is an
    array of `PositionPlayer` described previously
  - the `winner` which is initialized to `None`, at the begining of the game,
    but will be 1 or 2 if player 1 or 2 won the game

It also contains a few methods:
  - `map`, which returns the current map of the game
  - `next_frame` which advances one step in the game and updates the history
  - `main_loop`, that runs the game until it's finished