Struct Snake 

pub struct Snake {
    pub id: usize,
    pub head: Position,
    pub body: VecDeque<Position>,
    pub direction: Direction,
    pub length: usize,
    pub alive: bool,
}

Individual snake in the game

Fields

id: usize

Snake ID (for multi-agent games)

head: Position

Head position

body: VecDeque<Position>

Body positions (deque for efficient head/tail operations)

direction: Direction

Current direction

length: usize

Length of snake

alive: bool

Whether the snake is alive

Implementations

impl Snake

pub fn new(id: usize, start_pos: Position, start_direction: Direction) -> Self

Create new snake at position

pub fn move_forward(&mut self)

Move snake in current direction

pub fn move_forward_wrap(&mut self, width: i32, height: i32)

Move snake in current direction with wraparound boundaries (torus)

pub fn change_direction(&mut self, new_direction: Direction)

Change direction (with validation)

pub fn grow(&mut self)

Grow snake by one segment

pub fn collides_with_wall(&self, width: i32, height: i32) -> bool

Check if snake collides with walls

pub fn collides_with_self(&self) -> bool

Check if snake collides with itself

pub fn collides_with_other(&self, other: &Snake) -> bool

Check if snake collides with another snake

pub fn eats_food(&self, food_pos: &Position) -> bool

Check if snake eats food at position

pub fn get_all_positions(&self) -> Vec<Position>

Get all positions occupied by snake

pub fn len(&self) -> usize

Get snake’s current length

pub fn is_empty(&self) -> bool

Whether the snake has no body segments.

A live snake always has at least one segment, so this is effectively always false; provided to satisfy the len/is_empty convention.

pub fn is_alive(&self) -> bool

Check if snake is alive

Trait Implementations

impl Clone for Snake

fn clone(&self) -> Snake

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Snake

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.