Adiciona sistema de áudio

README.md

@@ -1,9 +1,27 @@
-## Welcome to GitHub Games
+# GitHub Games — Fork educacional
 
-A project based learning activity for people who are getting started with Git and GitHub.
+Este repositório é um fork com fins educacionais, desenvolvido na disciplina de **Gerenciamento de Projetos para Softwares Livres**.
 
-You can play the game at: https://githubschool.github.io/github-games/
+## Sobre o jogo
 
->> _*SUPPORTED BROWSERS*: Chrome, Firefox, Safari, Opera and IE9+_
+O projeto é uma versão de Tetris para navegador, feita em JavaScript. O objetivo é encaixar as peças para completar linhas e marcar pontos. A partida também acompanha o número de linhas e o nível, e oferece prévia da próxima peça, temas visuais, efeitos sonoros, pausa, reinício e conquistas.
 
-This fun open source game was cloned from: https://github.com/jakesgordon/javascript-tetris
+Para jogar, abra `index.html` em um navegador moderno.
+
+## Contribuidores
+
+- [Fidelixjv](https://github.com/Fidelixjv)
+- [ryanccoelho](https://github.com/ryanccoelho)
+- [Rianx1601](https://github.com/Rianx1601)
+- [Bruno-adryelyson](https://github.com/Bruno-adryelyson)
+- [IanKilwiny](https://github.com/IanKilwiny)
+- [JohnOnias](https://github.com/JohnOnias)
+- [pedrothiagos](https://github.com/pedrothiagos)
+- [RafaelSantosIF](https://github.com/RafaelSantosIF)
+- [alexandrekawan7](https://github.com/alexandrekawan7)
+
+## Créditos
+
+O jogo tem como base o projeto [GitHub Games](https://github.com/githubtraining/github-games), que por sua vez credita o [JavaScript Tetris de Jake Gordon](https://github.com/jakesgordon/javascript-tetris).
+
+Este software é distribuído sob a licença MIT. Consulte [LICENSE](C:/Users/wwwra/Documents/github-games-gpsl/LICENSE).

audio.js

@@ -0,0 +1,118 @@
+
+
+(function () {
+  let audioContext = null;
+  let muted = false;
+  let musicTimer = null;
+  let noteIndex = 0;
+
+  const melody = [
+    261.63, 329.63, 392.00, 329.63,
+    293.66, 349.23, 440.00, 349.23,
+    261.63, 329.63, 392.00, 523.25,
+    440.00, 392.00, 329.63, 293.66
+  ];
+
+  function init() {
+    const AudioContextClass =
+      window.AudioContext || window.webkitAudioContext;
+
+    if (!audioContext && AudioContextClass) {
+      audioContext = new AudioContextClass();
+    }
+
+    if (audioContext && audioContext.state === "suspended") {
+      audioContext.resume();
+    }
+  }
+
+  function tone(frequency, duration, volume, type) {
+    if (muted || !audioContext) return;
+
+    const oscillator = audioContext.createOscillator();
+    const gain = audioContext.createGain();
+    const now = audioContext.currentTime;
+
+    oscillator.type = type || "square";
+    oscillator.frequency.setValueAtTime(frequency, now);
+
+    gain.gain.setValueAtTime(volume, now);
+    gain.gain.exponentialRampToValueAtTime(
+      0.001, now + duration
+    );
+
+    oscillator.connect(gain);
+    gain.connect(audioContext.destination);
+
+    oscillator.start(now);
+    oscillator.stop(now + duration);
+  }
+
+  function startMusic() {
+    init();
+
+    if (!audioContext || musicTimer) return;
+
+    musicTimer = setInterval(function () {
+      if (!muted) {
+        tone(melody[noteIndex], 0.18, 0.025, "triangle");
+        noteIndex = (noteIndex + 1) % melody.length;
+      }
+    }, 220);
+  }
+
+  function stopMusic() {
+    clearInterval(musicTimer);
+    musicTimer = null;
+  }
+
+  function move() {
+    init();
+    tone(440, 0.045, 0.04);
+  }
+
+  function rotate() {
+    init();
+    tone(660, 0.065, 0.04);
+  }
+
+  function lock() {
+    init();
+    tone(180, 0.10, 0.05);
+  }
+
+  function toggleMute() {
+    muted = !muted;
+
+    const button = document.getElementById("muteButton");
+
+    if (button) {
+      button.textContent = muted
+        ? "🔇 Som desligado"
+        : "🔊 Som ligado";
+
+      button.setAttribute("aria-pressed", String(muted));
+    }
+
+    if (!muted) init();
+  }
+
+  function isMuted() {
+    return muted;
+  }
+
+  document.getElementById("muteButton")
+    ?.addEventListener("click", function () {
+      init();
+      toggleMute();
+    });
+
+  window.TetrisAudio = {
+    startMusic,
+    stopMusic,
+    move,
+    rotate,
+    lock,
+    isMuted
+  };
+})();