Now that we've created a complete game, let's build another one, a Tetris clone. This game is simpler than the previous one and will take less time to build, but is still very interesting. In fact, the internal architecture of this game is really different from the others. This is due to the kind of game that it is: a puzzle. The aim of the game is to fill lines of a grid with pieces made of four squares. Each time a line in completed, it's destroyed, and points are added to the player. Because this is a different kind of game, there are several implications as there is no player or no enemies in this game, only pieces and a board (grid). For this game, I will focus on the game logic only. So I will not reuse the previously made classes such as Action, ActionMap, ActionTarget, Configuration, and ResourceManager to be more concise. Of course, you can use them to improve the proposed source code.

So, to build this game we will need to build some classes: