增加转格式

lib/utils/gltf.js

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+import fs from "fs";
+
+export const BACKUP_SUFFIX = "_备份";
+
+// 检查当前目录是否有 gltf 文件
+export function hasGltfFile() {
+  return listGltfFiles().length > 0;
+}
+
+// 获取当前目录下可用的 gltf 文件列表
+export function listGltfFiles() {
+  const cwd = process.cwd();
+  return fs.readdirSync(cwd).filter(f => f.toLowerCase().endsWith(".gltf") && !f.includes(BACKUP_SUFFIX));
+}
+
+// 获取 glTF / GLB 模型文件
+export function listModelFiles() {
+  const cwd = process.cwd();
+  return fs
+    .readdirSync(cwd)
+    .filter(file => /\.(gltf|glb)$/i.test(file) && !file.includes(BACKUP_SUFFIX));
+}
+
+// 获取所有支持的模型文件（包括需要转换的格式）
+export function listAllModelFiles() {
+  const cwd = process.cwd();
+  return fs
+    .readdirSync(cwd)
+    .filter(file => /\.(gltf|glb|obj|fbx)$/i.test(file) && !file.includes(BACKUP_SUFFIX));
+}
+
+// 判断是否需要先转换
+export function needsConversion(file) {
+  return /\.(obj|fbx)$/i.test(file);
+}
+
+// 检查是否满足执行条件（有 ktx2、gltf、bin 文件）
+export function checkRequiredFiles() {
+  const cwd = process.cwd();
+  const files = fs.readdirSync(cwd);
+  const hasKtx2 = files.some(f => f.toLowerCase().endsWith(".ktx2"));
+  const hasGltf = files.some(f => f.toLowerCase().endsWith(".gltf"));
+  const hasBin = files.some(f => f.toLowerCase().endsWith(".bin"));
+
+  const missing = [];
+  if (!hasKtx2) missing.push("ktx2");
+  if (!hasGltf) missing.push("gltf");
+  if (!hasBin) missing.push("bin");
+
+  return { ok: missing.length === 0, missing };
+}
+
+// 修改 gltf 文件，根据选项添加扩展
+export function modifyGltfContent(gltfPath, options = ["textureBasisu"]) {
+  const content = fs.readFileSync(gltfPath, "utf-8");
+  const gltf = JSON.parse(content);
+
+  if (options.includes("textureBasisu")) {
+    if (!gltf.extensionsUsed) gltf.extensionsUsed = [];
+    if (!gltf.extensionsUsed.includes("KHR_texture_basisu")) {
+      gltf.extensionsUsed.push("KHR_texture_basisu");
+    }
+
+    if (gltf.textures) {
+      gltf.textures = gltf.textures.map(tex => ({
+        extensions: { KHR_texture_basisu: { source: tex.source } }
+      }));
+    }
+
+    if (gltf.images) {
+      gltf.images = gltf.images.map(img => {
+        const uri = img.uri || "";
+        const newUri = uri.replace(/\.(png|jpg|jpeg|webp|tga)$/i, ".ktx2");
+        return { uri: newUri, mimeType: "image/ktx2" };
+      });
+    }
+  }
+
+  // placeholder1, placeholder2, placeholder3 预留扩展点
+
+  return gltf;
+}

lib/utils/stepui.js

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+import color from "picocolors";
+import { initKeypress, onKey } from "../keyboard.js";
+
+export function createStepUI(options) {
+  const { title, getSteps } = options;
+
+  let steps = [];
+  let results = [];
+  let completed = new Set();
+  let currentStep = 0;
+  let currentOption = 0;
+
+  function initResults() {
+    steps = typeof getSteps === "function" ? getSteps() : getSteps;
+    results = steps.map(s => s.type === "multiselect" ? [...(s.default || [])] : s.default);
+    completed = new Set();
+    currentStep = 0;
+    currentOption = 0;
+  }
+
+  function renderNav() {
+    const nav = steps.map((step, i) => {
+      if (completed.has(i)) return color.green("☑ " + step.name);
+      if (i === currentStep) return color.bgCyan(color.black(" " + step.name + " "));
+      return color.dim("□ " + step.name);
+    });
+    return "← " + nav.join("  ") + "  " + color.green("✓Submit") + " →";
+  }
+
+  function renderOptions() {
+    const step = steps[currentStep];
+    const lines = [color.cyan(step.message), ""];
+    if (!step.options || !step.options.length) {
+      lines.push(color.dim(step.emptyMessage || "无可用选项"));
+      return lines.join("\n");
+    }
+    step.options.forEach((opt, i) => {
+      const isCurrent = i === currentOption;
+      const isSelected = step.type === "multiselect"
+        ? results[currentStep]?.includes(opt.value)
+        : results[currentStep] === opt.value;
+      const prefix = step.type === "multiselect"
+        ? (isSelected ? color.green("◉ ") : "○ ")
+        : (isSelected ? color.green("● ") : "○ ");
+      const cursor = isCurrent ? color.cyan("❯ ") : "  ";
+      const label = isCurrent ? color.cyan(opt.label) : opt.label;
+      const check = isSelected ? color.green(" ✓") : "";
+      lines.push(cursor + prefix + label + check);
+      if (opt.hint) lines.push("     " + color.dim(opt.hint));
+    });
+    return lines.join("\n");
+  }
+
+  function render() {
+    console.clear();
+    console.log(color.bgCyan(color.black(` ${title} `)));
+    console.log("\n" + renderNav());
+    console.log(color.dim("\n← → 切换步骤 | ↑ ↓ 选择 | Space 选中 | Tab 提交 | Esc 返回\n"));
+    console.log(renderOptions());
+  }
+
+  function runInteractive() {
+    initResults();
+    initKeypress();
+    return new Promise(resolve => {
+      render();
+      onKey((str, key) => {
+        if (!key) return;
+        const step = steps[currentStep];
+        const optCount = step.options?.length || 0;
+        if (key.name === "left") {
+          if (currentStep > 0) { currentStep--; currentOption = 0; }
+          render();
+        } else if (key.name === "right") {
+          if (currentStep < steps.length - 1) { currentStep++; currentOption = 0; }
+          render();
+        } else if (key.name === "up") {
+          if (!optCount) return;
+          currentOption = (currentOption - 1 + optCount) % optCount;
+          render();
+        } else if (key.name === "down") {
+          if (!optCount) return;
+          currentOption = (currentOption + 1) % optCount;
+          render();
+        } else if (key.name === "space") {
+          if (!optCount) return;
+          const opt = step.options[currentOption];
+          if (step.type === "multiselect") {
+            const list = results[currentStep];
+            const idx = list.indexOf(opt.value);
+            if (idx >= 0) list.splice(idx, 1);
+            else list.push(opt.value);
+          } else {
+            results[currentStep] = opt.value;
+          }
+          completed.add(currentStep);
+          render();
+        } else if (key.name === "return") {
+          if (!optCount) return;
+          if (step.type === "select") {
+            results[currentStep] = step.options[currentOption].value;
+          }
+          completed.add(currentStep);
+          if (currentStep < steps.length - 1) { currentStep++; currentOption = 0; }
+          render();
+        } else if (key.name === "tab") {
+          resolve({ steps, results });
+        } else if (key.name === "escape" || (key.ctrl && key.name === "c")) {
+          resolve(null);
+        }
+      });
+    });
+  }
+
+  function showSummary(lines) {
+    console.clear();
+    console.log(color.bgCyan(color.black(` ${title} `)));
+    console.log("\n" + color.green("配置完成！当前设置："));
+    lines.forEach(line => console.log("  " + line));
+    console.log();
+  }
+
+  return { runInteractive, showSummary, initResults };
+}