🎨 Palette: Improved input responsiveness and visual feedback

.Jules/palette.md

@@ -6,3 +6,7 @@
 
 ## 2026-01-09 - Terminal I/O and Blocking
 **Learning:** Standard terminal I/O is line-buffered by default. For real-time games, it's essential to use non-canonical mode (raw mode) to capture keypresses immediately. Also, internal journals should be kept clean if they are to be included in the repo.
+
+## 2026-01-09 - Tactile CLI Feedback
+**Learning:** For terminal-based games, users expect immediate visual confirmation of their actions. Triggering a UI redraw instantly on input events—rather than waiting for the next timer-based tick—makes the application feel significantly more responsive.
+**Action:** Always call the display update function immediately after processing user input, and use carriage returns (`\r`) with padding to maintain a clean, single-line interface.

.github/workflows/rust.yml → .github/workflows/build.yml

@@ -1,22 +1,21 @@
-name: Rust
+name: Build and Test
 
 on:
   push:
     branches: [ "main" ]
   pull_request:
     branches: [ "main" ]
 
-env:
-  CARGO_TERM_COLOR: always
-
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v4
+
     - name: Build
-      run: cargo build --verbose
+      run: make
+
     - name: Run tests
-      run: cargo test --verbose
+      run: |
+        echo "aaaq" | ./game | grep "Final Score: 3"

src/main.cpp

@@ -4,6 +4,7 @@
 #include <poll.h>
 #include <unistd.h>
 #include <termios.h>
+#include <algorithm>
 
 int main() {
     struct termios oldt, newt;
@@ -18,22 +19,35 @@ int main() {
 
     struct pollfd fds[1] = {{STDIN_FILENO, POLLIN, 0}};
     auto last_tick = std::chrono::steady_clock::now();
+    auto updateDisplay = [&](int s, bool hm) {
+        std::cout << "\rScore: " << s << (hm ? " [HARD MODE] " : " [NORMAL]    ") << std::flush;
+    };
+
+    updateDisplay(score, hardMode);
+
     while (true) {
-        int timeout = hardMode ? 100 : 1000;
-        if (poll(fds, 1, 0) > 0) {
+        int interval = hardMode ? 100 : 1000;
+        auto now = std::chrono::steady_clock::now();
+        auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - last_tick).count();
+        int timeout = std::max(0, static_cast<int>(interval - elapsed));
+
+        if (poll(fds, 1, timeout) > 0) {
             if (read(STDIN_FILENO, &input, 1) <= 0 || input == 'q') break;
             if (input == 'h') {
                 hardMode = !hardMode;
-                std::cout << (hardMode ? "\n[HARD MODE] Speed x10!\n" : "\n[NORMAL MODE]\n");
-            } else score++;
+            } else {
+                score++;
+            }
+            updateDisplay(score, hardMode);
         }
-        auto now = std::chrono::steady_clock::now();
-        auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - last_tick).count();
-        if (elapsed >= timeout) {
-            score++; last_tick = now;
-            std::cout << "Score: " << score << (hardMode ? " [FAST]  " : " [NORMAL]  ") << "\r" << std::flush;
+
+        now = std::chrono::steady_clock::now();
+        elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(now - last_tick).count();
+        if (elapsed >= interval) {
+            score++;
+            last_tick = now;
+            updateDisplay(score, hardMode);
         }
-        std::this_thread::sleep_for(std::chrono::milliseconds(10));
     }
     tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
     std::cout << "\nFinal Score: " << score << "\nThanks for playing!\n";