Adding Length to the Snake

One of the key dynamics of our snake game is its ability to grow longer as it consumes food. We provide a method, add_length(), to facilitate this growth:

def add_length(self):
    self.length += 1
    self.positions.append(self.positions[-1])

• add_length(): Increases the length of the snake by one unit and extends its body by duplicating the last segment.

Collision Detection

For collision detection we will implement method in a way to ensure the flexibility of our game:

• is_collision(point=None): determines if the snake's head collides with any part of its body OR a given point.

def is_collision(self, point=None):
    # If no specific point is provided, use the snake's head position as the default point for collision checking.
    if point is None:
        point = self.positions[0]
    
    # Iterate over the snake's body segments, starting from the second segment.
    # This is because the first segment is the head, which is the reference point for collision.
    for position in self.positions[1:]:
        # Check if the given point (or the head by default) collides with the current body segment.
        if point == position:
            # If a collision is detected, return True immediately.
            return True
            
    # If the loop completes without finding any collisions, return False indicating no collision with the body.
    return False

Note

The is_collision() function checks if a point is colliding with any other points in a list. If you don't specify a point, it automatically checks the first point in the list. This setup gives you the option to check collisions for a specific point or default to the first one in the list if you don't specify any.

These collision detection methods enable us to detect when the snake interacts with itself or fruits, allowing us to handle such situations appropriately within the game logic.