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#![allow(unused_imports, unused_variables, unused_mut)]
use colored::Colorize;
use crossterm::cursor::{Hide, MoveTo, Show};
use crossterm::event::{Event, KeyCode, KeyEvent, poll};
use crossterm::style::Stylize;
use crossterm::terminal::*;
use crossterm::{event, terminal, ExecutableCommand, QueueableCommand};
use rand::{thread_rng, Rng};
use std::io::{self, Write};
use std::thread::sleep;
use std::time::Duration;
type Gen = Vec<Vec<Cell>>;
#[derive(Clone, Copy, Debug)]
enum Cell {
Alive,
Dead,
}
fn render_gen(stdout: &mut io::Stdout, gen: &Gen) {
for i in 0..gen.len() {
for j in 0..gen[0].len() {
stdout.queue(MoveTo(i as u16, j as u16)).unwrap();
match gen[i][j] {
// Cell::Alive => print!("😎"),
// Cell::Alive => print!("🦀"),
Cell::Alive => print!("{}", "X".color("blue")),
Cell::Dead => print!("{}", "-".color("red")),
}
stdout.flush().unwrap();
}
}
}
fn new_gen() -> Gen {
let cells = vec![Cell::Dead, Cell::Dead, Cell::Alive, Cell::Dead, Cell::Alive];
let rows: u16 = terminal::size().unwrap().1;
let cols: u16 = terminal::size().unwrap().0;
let mut colums: Vec<Vec<Cell>> = Vec::new();
for _ in 0..cols {
let mut col: Vec<Cell> = Vec::new();
for _ in 0..rows {
let rand = thread_rng().gen_range(0..10);
col.push(cells[rand % 5]);
}
colums.push(col);
}
colums
}
fn is_valid_idx(i: i32, j: i32, m: i32, n: i32) -> bool {
i >= 0 && i < m && j >= 0 && j < n
}
fn get_alive(x: i32, y: i32, cur_gen: &Gen) -> i32 {
let mut alive_cnt: i32 = 0;
let m: i32 = cur_gen.len() as i32;
let n: i32 = cur_gen[0].len() as i32;
let dx: [i8; 8] = [0, 1, 0, -1, 1, -1, -1, 1];
let dy: [i8; 8] = [1, 0, -1, 0, 1, -1, 1, -1];
for i in 0..8 {
let nx: i32 = x as i32 + dx[i] as i32;
let ny: i32 = y as i32 + dy[i] as i32;
if is_valid_idx(nx, ny, m, n) {
let cur_cell = cur_gen[nx as usize][ny as usize];
match cur_cell {
Cell::Alive => alive_cnt += 1,
Cell::Dead => (),
}
}
}
alive_cnt
}
fn next_gen(cur_gen: &mut Gen) -> Gen {
let m: i32 = cur_gen.len() as i32;
let n: i32 = cur_gen[0].len() as i32;
let mut nxt_gen: Gen = Gen::new();
for _ in 0..m {
let mut col: Vec<Cell> = Vec::new();
for _ in 0..n {
col.push(Cell::Dead);
}
nxt_gen.push(col);
}
for i in 0..m {
for j in 0..n {
let alive = get_alive(i, j, cur_gen);
match cur_gen[i as usize][j as usize] {
Cell::Alive => {
if alive == 2 || alive == 3 {
nxt_gen[i as usize][j as usize] = Cell::Alive;
} else {
nxt_gen[i as usize][j as usize] = Cell::Dead;
}
}
Cell::Dead => {
if alive == 3 {
nxt_gen[i as usize][j as usize] = Cell::Alive;
}
}
}
}
}
*cur_gen = nxt_gen.clone();
nxt_gen
}
fn main() {
let mut stdout = io::stdout();
let mut frame: Gen = new_gen();
let mut nxt;
terminal::enable_raw_mode().unwrap();
stdout.execute(EnterAlternateScreen).unwrap();
stdout.execute(Hide).unwrap();
'gameloop: loop {
while event::poll(Duration::default()).unwrap() {
if let Event::Key(key_event) = event::read().unwrap() {
match key_event.code {
KeyCode::Esc | KeyCode::Char('q') => {
break 'gameloop;
}
KeyCode::Char('s') => {
frame = new_gen();
render_gen(&mut stdout, &frame)
}
KeyCode::Char('n') => {
nxt = next_gen(&mut frame);
render_gen(&mut stdout, &nxt)
}
KeyCode::Char('a') =>
'animate: loop {
nxt = next_gen(&mut frame);
render_gen(&mut stdout, &nxt);
sleep(Duration::from_millis(16));
if(poll(Duration::from_millis(1))).unwrap() {
if let Event::Key(k) = event::read().unwrap() {
match k.code {
KeyCode::Char('q') => break 'animate,
_ => {}
}
}
} else {}
},
_ => {}
}
}
}
}
stdout.execute(Show).unwrap();
stdout.execute(LeaveAlternateScreen).unwrap();
terminal::disable_raw_mode().unwrap();
}
|
