[refactor] Move objets to separate files.

- ball
- bricks
- paddle
Update documentation and readme.
[fix] Game over: update player score.

DOCUMENTATION.md

@@ -6,16 +6,16 @@ This program is a simple game implemented in MicroPython for the Raspberry Pi Pi
 ## Framebuffer
 The program uses a framebuffer to draw the game graphics. The framebuffer is a 2D array that represents the pixels on the display. The program uses the micropyhton `framebuf` module to create and manipulate the framebuffer. The framebuffer is then copied to the display using the `blit` method.
 
-## Multithreading
+If the program crashes, the framebuffer is not always reset, causing the program to crash due to lack of memeory. 
+A hard reset is required to fix this issue.
 
+## Multithreading
 The program uses multithreading to handle the game logic and the display updates separately. The `threading` module is used to create and manage the threads. The game logic is run in a separate thread from the display updates to ensure smooth gameplay and responsive controls.
 
-
 ## Game Logic
-
 The game logic is implemented in the `game_loop` function. This function runs in a separate thread and handles the following tasks:
-- Updating the game state based on user input and game rules
-- Generating new obstacles and updating their positions
-- Checking for collisions between the character and obstacles
+- Updating the game state based on user input andgame flow.
+- Updating ball position, paddle position, and bricks on the screen.
+- Checking for collisions between the ball, borders, paddle and bricks.
 - Updating the score based on the player's performance
-- Sending the updated game state to the display thread for rendering
+- Sending the updated game state to the display thread for rendering.