minor

src/app.rs

@@ -3,12 +3,13 @@ pub use cell::Cell;
 use ratatui::crossterm::event::{self, Event, KeyCode, KeyEventKind};
 use ratatui::{backend::Backend, Terminal};
 pub use shapes::HandleError;
-pub use std::str::FromStr;
-use std::{io, time::Duration};
+use std::{io, str::FromStr, time::Duration};
 pub use universe::Universe;
 
 /// Default poll duration
 const DEF_DUR: Duration = Duration::from_millis(400);
+/// Pause duration: a day
+const PAUSE: Duration = Duration::from_secs(60 * 60 * 24);
 
 mod area;
 mod cell;
@@ -27,7 +28,6 @@ pub struct App {
     universe: Universe,
     i: usize,
     pub poll_t: Duration,
-    pub paused: bool,
     pub area: Area,
 }
 impl Default for App {
@@ -37,7 +37,6 @@ impl Default for App {
             universe: Universe::default(),
             i: 0,
             poll_t: DEF_DUR,
-            paused: false,
             available_universes: shapes::all(),
         }
     }
@@ -55,10 +54,12 @@ impl App {
             universe: available_universes[0].clone(),
             i: 0,
             poll_t,
-            paused: false,
             available_universes,
         }
     }
+    pub fn paused(&self) -> bool {
+        self.poll_t == PAUSE
+    }
     pub fn len(&self) -> usize {
         self.available_universes.len() + shapes::N
     }
@@ -83,13 +84,12 @@ impl App {
     // }
 
     pub fn play_pause(&mut self, prev_poll_t: &mut Duration) {
-        if self.paused {
+        if self.paused() {
             self.poll_t = *prev_poll_t;
         } else {
             *prev_poll_t = self.poll_t;
-            self.poll_t = Duration::MAX;
+            self.poll_t = PAUSE;
         }
-        self.paused = !self.paused;
     }
     pub fn restart(&mut self) {
         let univ = self.get();
@@ -101,7 +101,7 @@ impl App {
     }
 
     pub fn faster(&mut self, big: bool) {
-        if !self.paused {
+        if !self.paused() {
             let div = if big { 2 } else { 5 };
             self.poll_t = self
                 .poll_t
@@ -110,7 +110,7 @@ impl App {
         }
     }
     pub fn slower(&mut self, big: bool) {
-        if !self.paused {
+        if !self.paused() {
             let div = if big { 2 } else { 5 };
             self.poll_t = self
                 .poll_t

src/app/ui.rs

@@ -55,7 +55,7 @@ pub fn ui(f: &mut Frame, app: &mut App) {
     let current_keys_hint = "[q]uit, [r]estart, pause: [ ], nav: vim/arrows".yellow();
 
     let poll_t = {
-        if let std::time::Duration::MAX = app.poll_t {
+        if let super::PAUSE = app.poll_t {
             "paused".into()
         } else {
             format!("Poll time: {:.0?}", app.poll_t)

src/main.rs

@@ -4,6 +4,20 @@ use std::{io::Read, str::FromStr};
 pub mod app;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let arg_universes = parse_args()?;
+
+    let mut app = App::default().with_universes(arg_universes);
+
+    let mut terminal = ratatui::try_init()?;
+
+    let res = app.run(&mut terminal);
+
+    ratatui::try_restore()?;
+
+    Ok(res?)
+}
+
+fn parse_args() -> Result<Vec<Universe>, Box<dyn std::error::Error>> {
     let args = std::env::args().skip(1).collect::<Vec<_>>();
     if args.contains(&"-h".into()) || args.contains(&"--help".into()) {
         println!(
@@ -13,9 +27,8 @@ USAGE: cgol-tui [<pattern>,...]
 
 where <pattern> is either a .cells file, or - for stdin"
         );
-        std::process::exit(1);
+        std::process::exit(0);
     }
-
     let piped_universe = {
         let mut univ = String::new();
         if args.len() == 1 && args[0] == "-" {
@@ -33,16 +46,5 @@ where <pattern> is either a .cells file, or - for stdin"
         .flat_map(|s| Universe::from_str(&s))
         .collect::<Vec<_>>();
 
-    let mut app = App::default().with_universes([universes, piped_universe].concat());
-
-    let mut terminal = ratatui::try_init()?;
-
-    let res = app.run(&mut terminal);
-
-    ratatui::try_restore()?;
-
-    // if any error has occured while executing, print it in cooked mode
-    res.inspect_err(|e| println!("error: {e:?}"))?;
-
-    Ok(())
+    Ok([universes, piped_universe].concat())
 }