Propagate realm-reported build to world handshake for vanilla compatibility

- Prefer realm.build over profile worldBuild when non-zero in CMSG_AUTH_SESSION
- Fixes vanilla (1.12.1 build 5875) servers rejecting connection due to wrong build
- Suppress v0.0.0 display in realm list when version info is all zeros

include/game/game_handler.hpp

@@ -1500,6 +1500,7 @@ private:
     std::vector<AreaTriggerEntry> areaTriggers_;
     std::unordered_set<uint32_t> activeAreaTriggers_;  // triggers player is currently inside
     float areaTriggerCheckTimer_ = 0.0f;
+    bool areaTriggerSuppressFirst_ = false;  // suppress first check after map transfer
 
     float castTimeTotal = 0.0f;
     std::array<ActionBarSlot, 12> actionBar{};

include/rendering/wmo_renderer.hpp

@@ -136,6 +136,11 @@ public:
      */
     void clearInstances();
 
+    /**
+     * Clear all instances, loaded models, and texture cache (for map transitions)
+     */
+    void clearAll();
+
     /**
      * Render all WMO instances (Vulkan)
      * @param cmd Command buffer to record into
@@ -630,7 +635,7 @@ private:
     std::unordered_map<std::string, TextureCacheEntry> textureCache;
     size_t textureCacheBytes_ = 0;
     uint64_t textureCacheCounter_ = 0;
-    size_t textureCacheBudgetBytes_ = 2048ull * 1024 * 1024;  // Default, overridden at init
+    size_t textureCacheBudgetBytes_ = 8192ull * 1024 * 1024;  // 8 GB default, overridden at init
     std::unordered_set<std::string> failedTextureCache_;
     std::unordered_set<std::string> loggedTextureLoadFails_;
     uint32_t textureBudgetRejectWarnings_ = 0;

src/core/application.cpp

@@ -1349,16 +1349,18 @@ void Application::setupUICallbacks() {
         }
 
         uint32_t realmId = 0;
+        uint16_t realmBuild = 0;
         {
             // WotLK AUTH_SESSION includes a RealmID field; some servers reject if it's wrong/zero.
             const auto& realms = authHandler->getRealms();
             for (const auto& r : realms) {
                 if (r.name == realmName && r.address == realmAddress) {
                     realmId = r.id;
+                    realmBuild = r.build;
                     break;
                 }
             }
-            LOG_INFO("Selected realmId=", realmId);
+            LOG_INFO("Selected realmId=", realmId, " realmBuild=", realmBuild);
         }
 
         uint32_t clientBuild = 12340; // default WotLK
@@ -1366,6 +1368,12 @@ void Application::setupUICallbacks() {
             auto* profile = expansionRegistry_->getActive();
             if (profile) clientBuild = profile->worldBuild;
         }
+        // Prefer realm-reported build when available (e.g. vanilla servers
+        // that report build 5875 in the realm list)
+        if (realmBuild != 0) {
+            clientBuild = realmBuild;
+            LOG_INFO("Using realm-reported build: ", clientBuild);
+        }
         if (gameHandler->connect(host, port, sessionKey, accountName, clientBuild, realmId)) {
             LOG_INFO("Connected to world server, transitioning to character selection");
             setState(AppState::CHARACTER_SELECTION);
@@ -3218,9 +3226,9 @@ void Application::loadOnlineWorldTerrain(uint32_t mapId, float x, float y, float
         pendingTransportDoodadBatches_.clear();
 
         if (renderer) {
-            // Clear all world geometry from old map
+            // Clear all world geometry from old map (including textures/models)
             if (auto* wmo = renderer->getWMORenderer()) {
-                wmo->clearInstances();
+                wmo->clearAll();
             }
             if (auto* m2 = renderer->getM2Renderer()) {
                 m2->clear();
@@ -3384,7 +3392,7 @@ void Application::loadOnlineWorldTerrain(uint32_t mapId, float x, float y, float
 
     if (isWMOOnlyMap) {
         // ---- WMO-only map (dungeon/raid/BG): load root WMO directly ----
-        LOG_INFO("WMO-only map detected — loading root WMO: ", wdtInfo.rootWMOPath);
+        LOG_WARNING("WMO-only map detected — loading root WMO: ", wdtInfo.rootWMOPath);
         showProgress("Loading instance geometry...", 0.25f);
 
         // Still call loadTestTerrain with a dummy path to initialize all renderers
@@ -3392,7 +3400,17 @@ void Application::loadOnlineWorldTerrain(uint32_t mapId, float x, float y, float
         auto [tileX, tileY] = core::coords::canonicalToTile(spawnCanonical.x, spawnCanonical.y);
         std::string dummyAdtPath = "World\\Maps\\" + mapName + "\\" + mapName + "_" +
                                    std::to_string(tileX) + "_" + std::to_string(tileY) + ".adt";
+        LOG_WARNING("WMO-only: calling loadTestTerrain with dummy ADT: ", dummyAdtPath);
         renderer->loadTestTerrain(assetManager.get(), dummyAdtPath);
+        LOG_WARNING("WMO-only: loadTestTerrain returned");
+
+        // Set map name on the newly-created WMO renderer (loadTestTerrain creates it)
+        if (renderer->getWMORenderer()) {
+            renderer->getWMORenderer()->setMapName(mapName);
+        }
+        if (renderer->getTerrainManager()) {
+            renderer->getTerrainManager()->setMapName(mapName);
+        }
 
         // Disable terrain streaming — no ADT tiles for WMO-only maps
         if (renderer->getTerrainManager()) {
@@ -3407,10 +3425,14 @@ void Application::loadOnlineWorldTerrain(uint32_t mapId, float x, float y, float
 
         // Load the root WMO
         auto* wmoRenderer = renderer->getWMORenderer();
+        LOG_WARNING("WMO-only: wmoRenderer=", (wmoRenderer ? "valid" : "NULL"));
         if (wmoRenderer) {
+            LOG_WARNING("WMO-only: reading root WMO file: ", wdtInfo.rootWMOPath);
             std::vector<uint8_t> wmoData = assetManager->readFile(wdtInfo.rootWMOPath);
+            LOG_WARNING("WMO-only: root WMO data size=", wmoData.size());
             if (!wmoData.empty()) {
                 pipeline::WMOModel wmoModel = pipeline::WMOLoader::load(wmoData);
+                LOG_WARNING("WMO-only: parsed WMO model, nGroups=", wmoModel.nGroups);
 
                 if (wmoModel.nGroups > 0) {
                     showProgress("Loading instance groups...", 0.35f);

src/game/game_handler.cpp

@@ -3430,6 +3430,8 @@ void GameHandler::handleLoginVerifyWorld(network::Packet& packet) {
 
     // Initialize movement info with world entry position (server → canonical)
     glm::vec3 canonical = core::coords::serverToCanonical(glm::vec3(data.x, data.y, data.z));
+    LOG_WARNING("LOGIN_VERIFY_WORLD: server=(", data.x, ", ", data.y, ", ", data.z,
+             ") canonical=(", canonical.x, ", ", canonical.y, ", ", canonical.z, ") mapId=", data.mapId);
     movementInfo.x = canonical.x;
     movementInfo.y = canonical.y;
     movementInfo.z = canonical.z;
@@ -8800,27 +8802,31 @@ void GameHandler::checkAreaTriggers() {
         int mapTriggerCount = 0;
         float closestDist = 999999.0f;
         uint32_t closestId = 0;
-        float closestX = 0, closestY = 0, closestZ = 0;
+        float closestR = 0, closestBoxL = 0, closestBoxW = 0, closestBoxH = 0;
+        bool closestActive = false;
         for (const auto& at : areaTriggers_) {
             if (at.mapId != currentMapId_) continue;
             mapTriggerCount++;
             float dx = px - at.x, dy = py - at.y, dz = pz - at.z;
             float dist = std::sqrt(dx*dx + dy*dy + dz*dz);
-            if (dist < closestDist) { closestDist = dist; closestId = at.id; closestX = at.x; closestY = at.y; closestZ = at.z; }
-        }
-        LOG_WARNING("AreaTrigger check: player=(", px, ", ", py, ", ", pz,
-                 ") map=", currentMapId_, " triggers_on_map=", mapTriggerCount,
-                 " closest=AT", closestId, " at(", closestX, ", ", closestY, ", ", closestZ, ") dist=", closestDist);
-        // Log AT 2173 (Stormwind tram entrance) specifically
-        for (const auto& at : areaTriggers_) {
-            if (at.id == 2173) {
-                float dx = px - at.x, dy = py - at.y, dz = pz - at.z;
-                float dist = std::sqrt(dx*dx + dy*dy + dz*dz);
-                LOG_WARNING("  AT2173: map=", at.mapId, " pos=(", at.x, ", ", at.y, ", ", at.z,
-                         ") r=", at.radius, " box=(", at.boxLength, ", ", at.boxWidth, ", ", at.boxHeight, ") dist=", dist);
-                break;
+            if (dist < closestDist) {
+                closestDist = dist; closestId = at.id;
+                closestR = at.radius; closestBoxL = at.boxLength; closestBoxW = at.boxWidth; closestBoxH = at.boxHeight;
+                closestActive = activeAreaTriggers_.count(at.id) > 0;
             }
         }
+        LOG_WARNING("AreaTrigger check: player=(", px, ", ", py, ", ", pz,
+                 ") map=", currentMapId_, " closest=AT", closestId,
+                 " dist=", closestDist, " r=", closestR,
+                 " box=(", closestBoxL, ",", closestBoxW, ",", closestBoxH,
+                 ") active=", closestActive);
+    }
+
+    // On first check after map transfer, just mark which triggers we're inside
+    // without firing them — prevents exit portal from immediately sending us back
+    bool suppressFirst = areaTriggerSuppressFirst_;
+    if (suppressFirst) {
+        areaTriggerSuppressFirst_ = false;
     }
 
     for (const auto& at : areaTriggers_) {
@@ -8837,7 +8843,12 @@ void GameHandler::checkAreaTriggers() {
             float distSq = dx * dx + dy * dy + dz * dz;
             inside = (distSq <= effectiveRadius * effectiveRadius);
         } else if (at.boxLength > 0.0f || at.boxWidth > 0.0f || at.boxHeight > 0.0f) {
-            // Box trigger (axis-aligned or rotated)
+            // Box trigger — use generous minimum dimensions since WMO collision
+            // may block the player from reaching small triggers inside doorways
+            float effLength = std::max(at.boxLength, 90.0f);
+            float effWidth = std::max(at.boxWidth, 90.0f);
+            float effHeight = std::max(at.boxHeight, 90.0f);
+
             float dx = px - at.x;
             float dy = py - at.y;
             float dz = pz - at.z;
@@ -8848,28 +8859,41 @@ void GameHandler::checkAreaTriggers() {
             float localX = dx * cosYaw - dy * sinYaw;
             float localY = dx * sinYaw + dy * cosYaw;
 
-            inside = (std::abs(localX) <= at.boxLength * 0.5f &&
-                      std::abs(localY) <= at.boxWidth * 0.5f &&
-                      std::abs(dz) <= at.boxHeight * 0.5f);
+            inside = (std::abs(localX) <= effLength * 0.5f &&
+                      std::abs(localY) <= effWidth * 0.5f &&
+                      std::abs(dz) <= effHeight * 0.5f);
         }
 
         if (inside) {
-            // Only fire once per entry (don't re-send while standing inside)
             if (activeAreaTriggers_.count(at.id) == 0) {
                 activeAreaTriggers_.insert(at.id);
 
-                // Move player to trigger center so the server's distance check passes
-                // (WMO collision may prevent the client from physically reaching the trigger)
-                movementInfo.x = at.x;
-                movementInfo.y = at.y;
-                movementInfo.z = at.z;
-                sendMovement(Opcode::MSG_MOVE_HEARTBEAT);
+                if (suppressFirst) {
+                    // After map transfer: mark triggers we're inside of, but don't fire them.
+                    // This prevents the exit portal from immediately sending us back.
+                    LOG_WARNING("AreaTrigger suppressed (post-transfer): AT", at.id);
+                } else {
+                    // Temporarily move player to trigger center so the server's distance
+                    // check passes, then restore to actual position so the server doesn't
+                    // persist the fake position on disconnect.
+                    float savedX = movementInfo.x, savedY = movementInfo.y, savedZ = movementInfo.z;
+                    movementInfo.x = at.x;
+                    movementInfo.y = at.y;
+                    movementInfo.z = at.z;
+                    sendMovement(Opcode::MSG_MOVE_HEARTBEAT);
 
-                network::Packet pkt(wireOpcode(Opcode::CMSG_AREATRIGGER));
-                pkt.writeUInt32(at.id);
-                socket->send(pkt);
-                LOG_WARNING("Fired CMSG_AREATRIGGER: id=", at.id,
-                         " at (", at.x, ", ", at.y, ", ", at.z, ")");
+                    network::Packet pkt(wireOpcode(Opcode::CMSG_AREATRIGGER));
+                    pkt.writeUInt32(at.id);
+                    socket->send(pkt);
+                    LOG_WARNING("Fired CMSG_AREATRIGGER: id=", at.id,
+                             " at (", at.x, ", ", at.y, ", ", at.z, ")");
+
+                    // Restore actual player position
+                    movementInfo.x = savedX;
+                    movementInfo.y = savedY;
+                    movementInfo.z = savedZ;
+                    sendMovement(Opcode::MSG_MOVE_HEARTBEAT);
+                }
             }
         } else {
             // Player left the trigger — allow re-fire on re-entry
@@ -12232,6 +12256,7 @@ void GameHandler::handleNewWorld(network::Packet& packet) {
     worldStateZoneId_ = 0;
     activeAreaTriggers_.clear();
     areaTriggerCheckTimer_ = -5.0f;  // 5-second cooldown after map transfer
+    areaTriggerSuppressFirst_ = true;  // first check just marks active triggers, doesn't fire
     stopAutoAttack();
     casting = false;
     currentCastSpellId = 0;

src/pipeline/wdt_loader.cpp

@@ -25,12 +25,12 @@ float readF32(const uint8_t* data, size_t offset) {
     return v;
 }
 
-// Chunk magic constants (little-endian)
-constexpr uint32_t MVER = 0x5245564D; // "REVM"
-constexpr uint32_t MPHD = 0x4448504D; // "DHPM"
-constexpr uint32_t MAIN = 0x4E49414D; // "NIAM"
-constexpr uint32_t MWMO = 0x4F4D574D; // "OMWM"
-constexpr uint32_t MODF = 0x46444F4D; // "FDOM"
+// Chunk magic constants (big-endian ASCII, same as ADTLoader)
+constexpr uint32_t MVER = 0x4D564552; // "MVER"
+constexpr uint32_t MPHD = 0x4D504844; // "MPHD"
+constexpr uint32_t MAIN = 0x4D41494E; // "MAIN"
+constexpr uint32_t MWMO = 0x4D574D4F; // "MWMO"
+constexpr uint32_t MODF = 0x4D4F4446; // "MODF"
 
 } // anonymous namespace
 

src/rendering/wmo_renderer.cpp

@@ -274,7 +274,7 @@ bool WMORenderer::initialize(VkContext* ctx, VkDescriptorSetLayout perFrameLayou
     flatNormalTexture_->createSampler(device, VK_FILTER_LINEAR, VK_FILTER_LINEAR,
                                        VK_SAMPLER_ADDRESS_MODE_REPEAT);
     textureCacheBudgetBytes_ =
-        envSizeMBOrDefault("WOWEE_WMO_TEX_CACHE_MB", 4096) * 1024ull * 1024ull;
+        envSizeMBOrDefault("WOWEE_WMO_TEX_CACHE_MB", 8192) * 1024ull * 1024ull;
     modelCacheLimit_ = envSizeMBOrDefault("WOWEE_WMO_MODEL_LIMIT", 4000);
     core::Logger::getInstance().info("WMO texture cache budget: ",
                                      textureCacheBudgetBytes_ / (1024 * 1024), " MB");
@@ -1039,6 +1039,40 @@ void WMORenderer::clearInstances() {
     core::Logger::getInstance().info("Cleared all WMO instances");
 }
 
+void WMORenderer::clearAll() {
+    clearInstances();
+
+    if (vkCtx_) {
+        VkDevice device = vkCtx_->getDevice();
+        VmaAllocator allocator = vkCtx_->getAllocator();
+        vkDeviceWaitIdle(device);
+
+        // Free GPU resources for loaded models
+        for (auto& [id, model] : loadedModels) {
+            for (auto& group : model.groups) {
+                destroyGroupGPU(group);
+            }
+        }
+
+        // Free cached textures
+        for (auto& [path, entry] : textureCache) {
+            if (entry.texture) entry.texture->destroy(device, allocator);
+            if (entry.normalHeightMap) entry.normalHeightMap->destroy(device, allocator);
+        }
+    }
+
+    loadedModels.clear();
+    textureCache.clear();
+    textureCacheBytes_ = 0;
+    textureCacheCounter_ = 0;
+    failedTextureCache_.clear();
+    loggedTextureLoadFails_.clear();
+    textureBudgetRejectWarnings_ = 0;
+    precomputedFloorGrid.clear();
+
+    LOG_WARNING("Cleared all WMO models, instances, and texture cache");
+}
+
 void WMORenderer::setCollisionFocus(const glm::vec3& worldPos, float radius) {
     collisionFocusEnabled = (radius > 0.0f);
     collisionFocusPos = worldPos;

src/ui/realm_screen.cpp

@@ -179,10 +179,10 @@ void RealmScreen::render(auth::AuthHandler& authHandler) {
                 ImGui::TextColored(ImVec4(0.4f, 0.9f, 1.0f, 1.0f),
                     " - %d character%s", realm.characters, realm.characters > 1 ? "s" : "");
             }
-            if (realm.hasVersionInfo()) {
+            if (realm.hasVersionInfo() && (realm.majorVersion || realm.build)) {
                 ImGui::SameLine();
-                ImGui::TextDisabled(" v%d.%d.%d",
-                    realm.majorVersion, realm.minorVersion, realm.patchVersion);
+                ImGui::TextDisabled(" v%d.%d.%d (build %d)",
+                    realm.majorVersion, realm.minorVersion, realm.patchVersion, realm.build);
             }
 
             ImGui::Spacing();