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| window.addEventListener("DOMContentLoaded", () => {
const canvas = document.getElementById("live2d-canvas");
const messagesEl = document.getElementById("messages");
const inputEl = document.getElementById("user-input");
const sendBtn = document.getElementById("send-btn");
// 全域 addMessage（chat 用）
window.addMessage = (text, type = "bot") => {
const div = document.createElement("div");
div.textContent = text;
div.className = type === "user" ? "msg-user" : "msg-bot";
messagesEl.appendChild(div);
messagesEl.scrollTop = messagesEl.scrollHeight;
};
window.PIXI = PIXI;
const app = new PIXI.Application({
view: canvas,
transparent: true,
autoStart: true,
resizeTo: window
});
let model = null;
// === Web Audio 分析器 ===
let audioContext = null;
let analyser = null;
let dataArray = null;
function initAudioAnalyzer() {
audioContext = new (window.AudioContext || window.webkitAudioContext)();
analyser = audioContext.createAnalyser();
analyser.fftSize = 2048;
const bufferLength = analyser.frequencyBinCount;
dataArray = new Uint8Array(bufferLength);
}
// === 真正的語音嘴型同步 ===
function startLipSync(audio) {
if (!model || !model.internalModel.coreModel) return;
if (!audioContext) initAudioAnalyzer();
const coreModel = model.internalModel.coreModel;
// 將 audio 元件接到分析器
const source = audioContext.createMediaElementSource(audio);
source.connect(analyser);
analyser.connect(audioContext.destination);
function animate() {
// 如果音訊停止就結束同步
if (audio.paused || audio.ended) {
coreModel.setParameterValueById("ParamMouthOpenY", 0);
return;
}
// 取得頻率資料
analyser.getByteFrequencyData(dataArray);
// 計算平均音量
let sum = 0;
for (let i = 0; i < dataArray.length; i++) sum += dataArray[i];
const volume = sum / dataArray.length;
// 映射到嘴型 (0~1)
const mouthValue = Math.min(1, volume / 120); // 值越低嘴巴越靈敏
// 套用到 Live2D 嘴巴參數
coreModel.setParameterValueById("ParamMouthOpenY", mouthValue);
requestAnimationFrame(animate);
}
animate();
}
(async () => {
try {
console.log("PIXI.live2d 存在？", !!PIXI.live2d.Live2DModel); // 會印 true
const modelUrl = "./assets/ellot/ellot.model3.json";
model = await PIXI.live2d.Live2DModel.from(modelUrl); // 官方載入方式
console.log("Ellot 模型載入成功！", model);
model.scale.set(0.4); // 調小一點，避免太大
model.anchor.set(0.5, 1);
model.position.set(app.renderer.width * 0.5, app.renderer.height);
// 拖拽事件（修復簡化）
model.interactive = true;
model.on("pointerdown", (e) => {
model.dragging = true;
const pos = e.data.getLocalPosition(model.parent);
model._dragOffset = { x: pos.x - model.x, y: pos.y - model.y };
});
model.on("pointermove", (e) => {
if (model.dragging) {
const pos = e.data.getLocalPosition(model.parent);
model.position.set(pos.x - model._dragOffset.x, pos.y - model._dragOffset.y);
}
});
model.on("pointerup", () => model.dragging = false);
model.on("pointerupoutside", () => model.dragging = false);
app.stage.addChild(model);
model.internalModel.motionManager.startRandomMotion("Idle");
} catch (err) {
console.error("載入細節錯誤：", err);
addMessage("模型載入失敗：" + err.message, "bot");
}
})();
window.addEventListener("resize", () => {
if (model) model.position.set(app.screen.width / 2, app.screen.height);
});
function startFakeLipSync(audio) {
if (!model || !model.internalModel.coreModel) return;
const coreModel = model.internalModel.coreModel;
let active = true;
const timer = setInterval(() => {
if (!active) return;
const v = Math.random();
coreModel.setParameterValueById("ParamMouthOpenY", v);
}, 80);
audio.addEventListener("ended", () => {
active = false;
clearInterval(timer);
coreModel.setParameterValueById("ParamMouthOpenY", 0);
});
}
// 聊天功能
const sendToMiniLoy = async (text) => {
window.addMessage(text, "user");
sendBtn.disabled = true;
inputEl.value = "";
try {
const resp = await fetch("http://localhost:4001/api/chat", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ text })
});
const data = await resp.json();
window.addMessage(data.reply || "(no reply)", "bot");
if (data.audio) {
const audio = new Audio("http://localhost:4001" + data.audio);
audio.play();
startLipSync(audio);
// window.startFakeLipSync(audio);
}
} catch (err) {
window.addMessage("後端連線失敗", "bot");
} finally {
sendBtn.disabled = false;
}
};
sendBtn.onclick = () => {
const text = inputEl.value.trim();
if (text) sendToMiniLoy(text);
};
inputEl.onkeydown = e => {
if (e.key === "Enter") {
const text = inputEl.value.trim();
if (text) sendToMiniLoy(text);
}
};
});
|
