Struct EdgeSnake 

pub struct EdgeSnake {
    pub x: u16,
    pub y: u16,
    last_update: Instant,
    frame_duration: Duration,
}

Manages a snake animation that moves along the terminal boundaries. The snake follows the edges of the given area in a clockwise direction.

Fields

x: u16

Current horizontal position of the head.

y: u16

Current vertical position of the head.

last_update: Instant

Last update timestamp for frame rate control.

frame_duration: Duration

Target duration between animation frames (speed).

Implementations

impl EdgeSnake

pub fn new() -> Self

Creates a new EdgeSnake instance.

pub fn update(&mut self, area: &Rect)

Updates the snake’s position along the edges.

The movement is constrained by a fixed frame rate.

pub fn render(&self, frame: &mut Frame<'_>, area: &Rect)

fn get_limits(width: u16, height: u16) -> (u16, u16)

Computes terminal-specific boundaries for the snake.

Returns (max_x, max_y).

pub fn step_along_edge( x: u16, y: u16, max_x: u16, max_y: u16, delta: i32, ) -> (u16, u16)

Having a little fun with mathematics, as simple if condition can do the tricks also Unified helper that steps a given number of cells along the perimeter. A delta of 1 moves clockwise; -1 moves counter-clockwise.

fn is_vertical(x: u16, y: u16, max_x: u16, max_y: u16) -> bool

Checks if the segment at (x, y) is on a vertical edge.

pub fn get_positions(&self, width: u16, height: u16) -> Vec<(u16, u16)>

Returns the coordinates for all snake segments, starting from the head and going TOTAL_SEGMENTS time back Calculate each position as if size was 1, and compute an offset to do that the good amount of time (different between width and height)

Trait Implementations

impl Default for EdgeSnake

fn default() -> Self

Returns the “default value” for a type.