To manage and organize the various directions our snake can take, we utilize a **constants** in our code. Each direction is represented as a tuple containing the changes in the `x` and `y` coordinates:

```py
RIGHT = (1, 0)
LEFT = (-1, 0)
UP = (0, -1)
DOWN = (0, 1)
```

| Direction | <center>Movement</center>    | <center>Explanation</center>                                    |
|-----------|-------------|------------------------------------------------|
| **RIGHT**     | <center>(1, 0)</center>      | Moves the snake one unit to the right.         |
| **LEFT**      | <center>(-1, 0)</center>     | Moves the snake one unit to the left.          |
| **UP**        | <center>(0, -1)</center>     | Moves the snake one unit upward.               |
| **DOWN**      | <center>(0, 1)</center>      | Moves the snake one unit downward.             |

### Changing Directions

We need to create separate functions and implement them to manage these directional changes. It's crucial to divide them into distinct functions for clearer and more understandable code.

- `change_direction_left(snake)`: this method changes the snake's direction to the left, but only if the previous direction was not right.

- `change_direction_right(snake)`: similarly, this method changes the direction to the right, barring the previous direction being left.

- `change_direction_up(snake)`: moves the snake upwards, preventing a sudden reversal if the previous direction was downward.

- `change_direction_down(snake)`: moves the snake downwards, ensuring it doesn't collide with its own body by immediately turning back

```py
def change_direction_up(self):
    # Ensure the snake cannot turn directly from going down to going up
    if self.direction != DOWN:
    	# Change the snake's direction to up
	    self.direction = UP
```

> Note
> 
> The direction change methods ensure that the snake doesn't **abruptly reverse its course, which could lead to collision** and subsequently end the game. By restricting the direction changes based on the previous direction, we maintain smooth and logical movement.

In this project, you'll embark on a journey of game development, learning essential programming concepts while honing your creativity and problem-solving skills. Through step-by-step tutorials, you'll build a fully functional Snake game from scratch.

In this Python project, we'll create a traditional simple yet addictive arcade Snake game. This project aims to enhance your skills using straightforward Python code, making it suitable for beginners. In the end you will have a solid game backbone that you can continue to improve with adding new mechanics or adding libraries.

Building a Classic Snake Game

Directions

Solution