Fix TUI: stable 7-line game render, no extra newlines, spin busy flag prevents queueing

2 files changed, 15 insertions, 11 deletions

diff --git a/src/bin/client/games/slots.rs b/src/bin/client/games/slots.rs
index bc0a9b4..76a5c4d 100644
--- a/src/bin/client/games/slots.rs
+++ b/src/bin/client/games/slots.rs
@@ -30,18 +30,15 @@ impl Game for SlotsGame {
     fn render(&self, state: &GameState) -> String {
         let reels = state.data.get("reels").cloned().unwrap_or_default();
 
-        let mut output = format!("\n=== SLOTS ===\r\n");
-        output += &format!("Bet: {} PLN\r\n", state.bet_amount);
-        output += &format!("{}\r\n", self.render_reels(&reels));
-        output += "\nPress [SPACE] to spin!\r\n";
-        output += "\nControls: [+/-] Adjust Bet  [Q] Quit\r\n";
-        output
+        format!(
+            "=== SLOTS ===\r\nBet: {} PLN\r\n{}\r\n\r\nPress [SPACE] to spin!\r\n\r\nControls: [+/-] Adjust Bet  [Q] Quit",
+            state.bet_amount,
+            self.render_reels(&reels)
+        )
     }
 
     fn render_lines(&self, _state: &GameState) -> usize {
-        // Fixed count matching the render() layout:
-        // blank, header, bet, reels, blank, prompt, blank, controls
-        8
+        7
     }
 
     fn get_help(&self) -> String {
diff --git a/src/bin/client/repl.rs b/src/bin/client/repl.rs
index d10edba..b5707ad 100644
--- a/src/bin/client/repl.rs
+++ b/src/bin/client/repl.rs
@@ -28,6 +28,7 @@ pub struct ClientState {
     pub game_manager: GameManager,
     cleanup_done: Arc<Mutex<bool>>,
     in_game_mode: bool,
+    spinning: bool,
 }
 
 impl ClientState {
@@ -54,6 +55,7 @@ impl ClientState {
             game_manager: GameManager::new(),
             cleanup_done: Arc::new(Mutex::new(false)),
             in_game_mode: false,
+            spinning: false,
         }
     }
 
@@ -78,11 +80,15 @@ impl ClientState {
                 return true;
             }
             KeyCode::Char(' ') => {
+                if self.spinning {
+                    return true; // Discard keypress while busy
+                }
                 let can_spin = self.game_manager.get_current_state()
                     .map(|s| s.phase == GamePhase::WaitingToStart || s.phase == GamePhase::Finished)
                     .unwrap_or(false);
                 if can_spin {
                     if let Some(mut stream) = self.stream.take() {
+                        self.spinning = true;
                         match self.game_manager.start_game(&mut stream) {
                             Ok(()) => {
                                 let response = self.read_server_response(&mut stream);
@@ -96,6 +102,7 @@ impl ClientState {
                             Err(e) => println!("\nError starting game: {:?}", e),
                         }
                         self.stream = Some(stream);
+                        self.spinning = false;
                     }
                 }
                 return true;
@@ -788,7 +795,7 @@ fn redraw_game(game_output: &str) {
         MoveToColumn(0)
     )
     .unwrap();
-    println!("{}", game_output);
+    print!("{}\r", game_output);
     stdout().flush().unwrap();
 }
 
@@ -804,7 +811,7 @@ fn redraw_game_lines(game_output: &str, lines: usize) {
         MoveToColumn(0)
     )
     .unwrap();
-    println!("{}", game_output);
+    print!("{}\r", game_output);
     stdout().flush().unwrap();
 }