gntag/src/main.rs

use gntag::agent::{Agent, SimpleAgent};
use gntag::view::TerminalView;
use gntag::world::ActualWorld;
use std::io;
use std::io::Read;
use std::process::exit;
use std::sync::{Arc, Mutex};
use std::thread;

fn main() {
  let view = Arc::new(Mutex::new(Some(TerminalView::try_new().unwrap())));
  let view2 = view.clone();
  thread::spawn(move || {
    let stdin = io::stdin();
    for byte in stdin.bytes().flatten() {
      if byte == b'q' || byte == 0x1b || byte == 0x03 {
        if let Ok(mut view) = view2.lock() {
          *view = None; // drop view
          println!("\n");
        }
        exit(0);
      }
    }
  });
  loop {
    let (width, height) = (*view.lock().unwrap())
      .as_mut()
      .unwrap()
      .content_size()
      .unwrap();
    let mut agents: Vec<(_, Box<dyn Agent>)> = vec![];
    for x in (0..width).step_by(10) {
      for y in (0..height).step_by(10) {
        agents.push(((x, y).into(), Box::new(SimpleAgent)));
      }
    }
    let mut world = ActualWorld::new((width, height).into(), agents);

    let mut gen = 0;
    loop {
      let resized = (*view.lock().unwrap())
        .as_mut()
        .unwrap()
        .draw(
          gen,
          world
            .state
            .agent_positions
            .get(&world.state.tagged)
            .map(|pos| (pos.x, pos.y))
            .unwrap(),
          world
            .state
            .agent_positions
            .iter()
            .map(|(_id, pos)| (pos.x, pos.y))
            .collect::<Vec<_>>()
            .as_ref(),
        )
        .unwrap();
      if resized {
        break;
      };
      world.do_step();
      gen += 1;
    }
  }
}