90 lines
2.2 KiB
Rust
90 lines
2.2 KiB
Rust
use std::thread;
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use clap::Parser;
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use rand::{distributions, Rng};
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use servicepoint::*;
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#[derive(Parser, Debug)]
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struct Cli {
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#[arg(short, long, default_value = "localhost:2342")]
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destination: String,
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#[arg(short, long, default_value_t = 0.5f64)]
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probability: f64,
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}
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fn main() {
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let cli = Cli::parse();
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let connection = Connection::open(&cli.destination).unwrap();
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let mut field = make_random_field(cli.probability);
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loop {
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connection
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.send(Command::BitmapLinearWin(
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Origin(0, 0),
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field.clone(),
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CompressionCode::Lzma,
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))
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.expect("could not send");
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thread::sleep(FRAME_PACING);
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field = iteration(field);
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}
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}
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fn iteration(field: PixelGrid) -> PixelGrid {
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let mut next = field.clone();
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for x in 0..field.width() {
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for y in 0..field.height() {
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let old_state = field.get(x, y);
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let neighbors = count_neighbors(&field, x as i32, y as i32);
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let new_state = matches!(
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(old_state, neighbors),
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(true, 2) | (true, 3) | (false, 3)
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);
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next.set(x, y, new_state);
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}
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}
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next
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}
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fn count_neighbors(field: &PixelGrid, x: i32, y: i32) -> i32 {
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let mut count = 0;
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for nx in x - 1..=x + 1 {
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for ny in y - 1..=y + 1 {
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if nx == x && ny == y {
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continue; // the cell itself does not count
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}
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if nx < 0
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|| ny < 0
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|| nx >= field.width() as i32
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|| ny >= field.height() as i32
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{
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continue; // pixels outside the grid do not count
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}
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if !field.get(nx as usize, ny as usize) {
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continue; // dead cells do not count
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}
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count += 1;
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}
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}
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count
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}
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fn make_random_field(probability: f64) -> PixelGrid {
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let mut field = PixelGrid::max_sized();
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let mut rng = rand::thread_rng();
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let d = distributions::Bernoulli::new(probability).unwrap();
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for x in 0..field.width() {
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for y in 0..field.height() {
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field.set(x, y, rng.sample(d));
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}
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}
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field
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}
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