it works

src/board.rs

@@ -70,7 +70,7 @@ impl Board {
                 lines_cleared += 1;
             } else {
                 new_grid[new_y] = self.grid[y].clone();
-                new_y -= 1;
+                new_y = new_y.wrapping_sub(1);
             }
         }
 

src/game.rs

@@ -32,6 +32,7 @@ pub struct Game {
     drop_interval: u64,
     last_drop: u64,
     status: GameStatus,
+    _input_handler: input::InputHandler,
     input_rx: mpsc::Receiver<Input>,
 }
 
@@ -40,7 +41,7 @@ impl Game {
     pub fn new() -> io::Result<Game> {
         let current_piece = Piece::new(PieceType::random());
         let next_piece = Piece::new(PieceType::random());
-        let (_, input_rx) = input::InputHandler::new();
+        let (_input_handler, input_rx) = input::InputHandler::new();
 
         Ok(Game {
             board: Board::new(),
@@ -52,6 +53,7 @@ impl Game {
             drop_interval: DROP_INTERVAL,
             last_drop: 0,
             status: GameStatus::Running,
+            _input_handler,
             input_rx,
         })
     }
@@ -87,9 +89,9 @@ impl Game {
             self.render(&mut stdout)?;
 
             // Небольшая пауза для контроля FPS
-            let elapsed = last_tick.duration_since(now).as_millis() as u64;
+            let frame_time = Instant::now().duration_since(last_tick).as_millis() as u64;
-            if elapsed < 1000 / FPS {
+            if frame_time < 1000 / FPS {
-                std::thread::sleep(Duration::from_millis(1000 / FPS - elapsed));
+                std::thread::sleep(Duration::from_millis(1000 / FPS - frame_time));
             }
         }
 
@@ -235,12 +237,12 @@ impl Game {
 
     /// Рендер игры
     fn render(&self, stdout: &mut Stdout) -> io::Result<()> {
-        stdout.write_all(b"\x1B[2J")?; // Очистка экрана
+        stdout.write_all(b"\x1B[H")?; // Курсор в начало экрана
 
         // Заголовок
-        writeln!(
+        write!(
             stdout,
-            "Tetris - Score: {} - Lines: {} - Level: {}",
+            "Tetris - Score: {} - Lines: {} - Level: {}\x1B[K\r\n",
             self.score, self.lines_cleared, self.level
         )?;
 
@@ -264,7 +266,7 @@ impl Game {
                     }
                 }
             }
-            stdout.write_all(b"|\n")?;
+            stdout.write_all(b"|\x1B[K\r\n")?;
         }
 
         // Нижняя граница
@@ -272,14 +274,14 @@ impl Game {
         for _ in 0..board::BOARD_WIDTH {
             stdout.write_all(b"-")?;
         }
-        stdout.write_all(b"+\n")?;
+        stdout.write_all(b"+\x1B[K\r\n")?;
 
         // Следующая фигура
-        writeln!(stdout, "Next:")?;
+        write!(stdout, "Next:\x1B[K\r\n")?;
         self.render_preview(stdout, &self.next_piece)?;
 
         // Управление
-        writeln!(stdout, "Controls: Arrow Keys - Move | Space - Drop | Q - Quit")?;
+        write!(stdout, "Controls: Arrow Keys - Move | Space - Drop | Q - Quit\x1B[K\r\n")?;
 
         stdout.flush()?;
         Ok(())
@@ -305,7 +307,7 @@ impl Game {
                     stdout.write_all(b" ")?;
                 }
             }
-            stdout.write_all(b"\n")?;
+            stdout.write_all(b"\x1B[K\r\n")?;
         }
         Ok(())
     }