Phase 5: Netplay module loading integration

- Enhanced loader.js with detailed logging for netplay script loading
- Fixed module loading order in non-minified mode
- Added global variable verification after module loads
- Improved error handling for script loading failures
- All netplay modules now load correctly before emulator.js

Author: TechnicallyComputers

data/loader.js

@@ -1,5 +1,30 @@
 (async function () {
+  console.log("[Loader] ========================================");
+  console.log("[Loader] loader.js executing - START");
+  console.log("[Loader] ========================================");
   const scripts = [
+    // Netplay modules first (in dependency order)
+    "netplay/core/input/frameworks/SimpleController.js",
+    "netplay/core/input/frameworks/ComplexController.js",
+    "netplay/core/input/InputQueue.js",
+    "netplay/core/input/SlotManager.js",
+    "netplay/core/input/InputSync.js",
+    "netplay/core/session/FrameCounter.js",
+    "netplay/core/session/SessionState.js",
+    "netplay/core/config/ConfigManager.js",
+    "netplay/core/room/GameModeManager.js",
+    "netplay/core/room/UsernameManager.js",
+    "netplay/core/room/MetadataValidator.js",
+    "netplay/core/room/SpectatorManager.js",
+    "netplay/core/room/PlayerManager.js",
+    "netplay/core/room/RoomManager.js",
+    "netplay/core/transport/SocketTransport.js",
+    "netplay/core/transport/DataChannelManager.js",
+    "netplay/core/transport/SFUTransport.js",
+    "netplay/core/NetplayEngine.js",
+    "netplay/adapters/emulatorjs/interface.js",
+    "netplay/adapters/emulatorjs/EmulatorJSAdapter.js",
+    // Top-level files (existing structure)
     "emulator.js",
     "nipplejs.js",
     "shaders.js",
@@ -33,8 +58,57 @@
           return scriptPath + "src/" + file;
         }
       })();
-      script.onload = resolve;
-      script.onerror = () => {
+      // Debug logging for netplay modules
+      if (file.includes("netplay")) {
+        console.log("[Loader] 📦 About to load netplay script:", file);
+        console.log("[Loader] 📦 Full URL will be:", script.src);
+      }
+      script.onload = () => {
+        if (file.includes("netplay")) {
+          console.log("[Loader] ✅ Netplay script loaded successfully:", file);
+          // Verify critical globals after loading key files
+          if (file === "netplay/core/NetplayEngine.js") {
+            const exists = typeof window.NetplayEngine !== "undefined";
+            console.log(
+              "[Loader] 🔍 NetplayEngine global check:",
+              exists ? "✅ EXISTS" : "❌ MISSING"
+            );
+            if (!exists) {
+              console.error(
+                "[Loader] ⚠️ WARNING: NetplayEngine.js loaded but window.NetplayEngine is undefined!"
+              );
+            }
+          }
+          if (file === "netplay/adapters/emulatorjs/EmulatorJSAdapter.js") {
+            const exists = typeof window.EmulatorJSAdapter !== "undefined";
+            console.log(
+              "[Loader] 🔍 EmulatorJSAdapter global check:",
+              exists ? "✅ EXISTS" : "❌ MISSING"
+            );
+            if (!exists) {
+              console.error(
+                "[Loader] ⚠️ WARNING: EmulatorJSAdapter.js loaded but window.EmulatorJSAdapter is undefined!"
+              );
+            }
+          }
+        }
+        resolve();
+      };
+      script.onerror = (error) => {
+        console.error(
+          "[Loader] ❌ Failed to load script:",
+          file,
+          "from:",
+          script.src
+        );
+        console.error("[Loader] Error details:", error);
+        console.error("[Loader] Script element:", script);
+        if (file.includes("netplay")) {
+          console.error(
+            "[Loader] ⚠️ CRITICAL: Netplay module failed to load! Check Network tab for 404 errors."
+          );
+          console.error("[Loader] Expected path:", script.src);
+        }
         filesmissing(file).then((e) => resolve());
       };
       document.head.appendChild(script);
@@ -83,20 +157,50 @@
     }
   }
 
+  console.log("[Loader] About to start loading", scripts.length, "scripts");
   if ("undefined" != typeof EJS_DEBUG_XX && true === EJS_DEBUG_XX) {
+    console.log("[Loader] Using DEBUG mode");
     for (let i = 0; i < scripts.length; i++) {
+      console.log(
+        "[Loader] Loading script",
+        i + 1,
+        "of",
+        scripts.length,
+        ":",
+        scripts[i]
+      );
       await loadScript(scripts[i]);
     }
     await loadStyle("emulator.css");
   } else {
     // RomM uses the SFU fork primarily for netplay; it does not bundle cores.
     // Always load the non-minified runtime so core CDN fallbacks can be patched
     // without touching huge single-line minified bundles.
+    console.log("[Loader] Using non-minified mode (RomM default)");
     for (let i = 0; i < scripts.length; i++) {
+      console.log(
+        "[Loader] Loading script",
+        i + 1,
+        "of",
+        scripts.length,
+        ":",
+        scripts[i]
+      );
       await loadScript(scripts[i]);
     }
     await loadStyle("emulator.css");
   }
+  console.log("[Loader] ========================================");
+  console.log("[Loader] All scripts loaded, initializing EmulatorJS");
+  console.log(
+    "[Loader] Checking for NetplayEngine:",
+    typeof window.NetplayEngine
+  );
+  console.log(
+    "[Loader] Checking for EmulatorJSAdapter:",
+    typeof window.EmulatorJSAdapter
+  );
+  console.log("[Loader] ========================================");
   const config = {};
   config.gameUrl = window.EJS_gameUrl;
   config.dataPath = scriptPath;