rs_snake 1.0.5

The classic 'Snake' game as a terminal application.
Documentation 
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use std::collections::VecDeque;
use std::io::{Stdout, Write};

use termion::raw::RawTerminal;
use termion::{clear, color, cursor};

use crate::game::GridCell;

// TODO: still need to figure out how to abstract this part properly
pub struct GameOutput {
    output: termion::screen::AlternateScreen<RawTerminal<Stdout>>,
}

impl GameOutput {
    pub fn new(output: termion::screen::AlternateScreen<RawTerminal<Stdout>>) -> Self {
        Self { output }
    }
    pub fn render(&mut self) {
        self.output.flush().unwrap();
    }

    pub fn clear_screen(&mut self) {
        write!(self.output, "{}{}", clear::All, cursor::Hide).unwrap();
    }

    pub fn reset_terminal(&mut self) {
        write!(
            self.output,
            "{}{}{}",
            termion::cursor::Show,
            termion::cursor::Goto(1, 1),
            termion::clear::All
        )
        .unwrap();
    }

    pub fn draw_game_over_message(&mut self, len: usize) {
        let message = format!(
            "Game over! You reached a snake length of {len}! Would you like to play again?\r\nPress 'p' to play again, press 'q' to quit"
        );
        write!(self.output, "{}{}", termion::cursor::Goto(1, 1), message).unwrap();
    }

    pub fn draw_border(&mut self, xmin: u16, xmax: u16, ymin: u16, ymax: u16) {
        for i in xmin - 1..=xmax + 1 {
            for j in ymin - 1..=ymax + 1 {
                match i {
                    n if (n == xmin - 1 || n == xmax + 1) => write!(
                        self.output,
                        "{goto}{bgColor} ",
                        goto = cursor::Goto(i, j),
                        bgColor = color::Bg(color::White),
                    )
                    .unwrap(),
                    _ => (),
                };
                match j {
                    n if (n == ymin - 1 || n == ymax + 1) => write!(
                        self.output,
                        "{goto}{bgColor} ",
                        goto = cursor::Goto(i, j),
                        bgColor = color::Bg(color::White),
                    )
                    .unwrap(),
                    _ => (),
                };
            }
        }
        write!(self.output, "{}", color::Bg(color::Reset),).unwrap()
    }

    pub fn draw_food(&mut self, food: &GridCell) {
        write!(
            self.output,
            "{goto}{bgColor}{fgColor}{food_char}{fgreset}{bgreset}",
            goto = cursor::Goto(food.x, food.y),
            bgColor = color::Bg(color::Red),
            fgColor = color::Fg(color::LightGreen),
            food_char = '\u{00D3}',
            fgreset = color::Fg(color::Reset),
            bgreset = color::Bg(color::Reset),
        )
        .unwrap();
    }

    pub fn draw_snake(&mut self, snake: &VecDeque<GridCell>) {
        let mut segments: usize = 0;
        let len = snake.len();
        for segment in snake {
            let segment_char = match segments {
                0 => 'S',
                num if num == len - 1 => 'e',
                1 => 'n',
                num if num == len - 2 => 'k',
                _ => 'a',
            };
            write!(
                self.output,
                "{goto}{bgColor}{segment_char}{reset}",
                goto = cursor::Goto(segment.x, segment.y),
                bgColor = color::Bg(color::Green),
                segment_char = segment_char,
                reset = color::Bg(color::Reset),
            )
            .unwrap();
            segments += 1;
        }
    }

    pub fn undraw(&mut self, cell: &GridCell) {
        write!(self.output, "{} ", cursor::Goto(cell.x, cell.y)).unwrap();
    }
}