From 3475f19663fc3c9809ff9cb8d7371c9aff58fd9b Mon Sep 17 00:00:00 2001
From: Vegard Matthey <vegardmatthey@protonmail.com>
Date: Thu, 4 Apr 2024 20:57:37 +0200
Subject: [PATCH] read all inputs after polling and use the last one to always
 use newest input

---
 src/main.rs | 34 ++++++++++++++++------------------
 1 file changed, 16 insertions(+), 18 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 418a719..4c1fea8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,12 +1,9 @@
 use crossterm::{
-    cursor::{Hide, Show},
     event::{poll, read, Event, KeyCode},
     terminal::{disable_raw_mode, enable_raw_mode, size},
-    ExecutableCommand,
 };
 use rand::prelude::*;
 use std::collections::VecDeque;
-use std::io::stdout;
 use std::time::{Duration, Instant};
 
 const FRAME_TIME: Duration = Duration::from_millis(100);
@@ -33,17 +30,13 @@ fn main() {
     let mut snake: VecDeque<(u16, u16)> = vec![(0, 0), (1, 0), (2, 0)].into();
     let mut direction = Direction::Right;
     let mut length = snake.len();
-
-    stdout().execute(Hide).unwrap();
-
     let (width, height) = size().unwrap_or((20, 20));
-    println!("width {width}, height: {height}");
     let (width, height) = ((width - 2) / 2, height - 5);
+
     let mut rng = thread_rng();
-    let mut apple = (
-        rng.gen_range(0..width),
-        rng.gen_range(0..height),
-    );
+    let mut apple = (rng.gen_range(0..width), rng.gen_range(0..height));
+
+    print!("\x1b[?25l"); // Hides cursor
 
     loop {
         let now = Instant::now();
@@ -78,17 +71,14 @@ fn eat(
     (width, height): (u16, u16),
 ) {
     if snake.contains(apple) {
-        *apple = (
-            rng.gen_range(0..width),
-            rng.gen_range(0..height),
-        );
+        *apple = (rng.gen_range(0..width), rng.gen_range(0..height));
         *length += 1;
     }
 }
 
 fn exit() {
     disable_raw_mode().unwrap();
-    stdout().execute(Show).unwrap();
+    print!("\x1b[?25h"); // Shows cursor
     std::process::exit(0);
 }
 
@@ -122,14 +112,22 @@ fn change_dir(direction: &mut Direction) {
 }
 
 fn key_input(timeout: Duration) -> Option<char> {
+    let mut result = None;
     if poll(timeout).ok()? {
         if let Event::Key(k) = read().ok()? {
             if let KeyCode::Char(c) = k.code {
-                return Some(c);
+                result = Some(c);
             }
         }
     }
-    None
+    while poll(Duration::from_secs(0)).ok()? {
+        if let Event::Key(k) = read().ok()? {
+            if let KeyCode::Char(c) = k.code {
+                result = Some(c);
+            }
+        }
+    }
+    result
 }
 
 fn move_snake(