feat: complete client integration for all 6 open formats

- Wire WOB buildings into WMO render pipeline (loads→converts→renders)
- Implement JSON DBC loading in DBCFile::loadJSON() with nlohmann/json
- Wire JSON DBC override into AssetManager (custom_zones/output scan)
- Add WMO→WOB conversion with full geometry (fromWMO)
- Replace placeholder WOB export with real WMO→WOB conversion in editor
- Add --convert-wmo CLI flag for batch WMO→WOB conversion
- Store discovered custom zones on Renderer with getCustomZones() accessor
- Add isCustomZone_ member to TerrainManager

All 6 Blizzard format replacements now fully load in the client:
  ADT→WOT/WHM, WDT→zone.json, BLP→PNG, DBC→JSON, M2→WOM, WMO→WOB

include/pipeline/dbc_loader.hpp

@@ -149,6 +149,8 @@ private:
      * Rebuilds the same in-memory layout as binary load.
      */
     bool loadCSV(const std::vector<uint8_t>& csvData);
+
+    bool loadJSON(const std::vector<uint8_t>& jsonData);
 };
 
 /**

include/pipeline/wowee_building.hpp

@@ -56,6 +56,9 @@ public:
 
     // Convert WOB to WMOModel for the client's WMO renderer
     static bool toWMOModel(const WoweeBuilding& building, class WMOModel& outModel);
+
+    // Convert WMOModel to WOB (for editor export)
+    static WoweeBuilding fromWMO(const class WMOModel& wmo, const std::string& name = "");
 };
 
 } // namespace pipeline

include/rendering/renderer.hpp

@@ -14,6 +14,7 @@
 #include "rendering/vk_frame_data.hpp"
 #include "rendering/vk_utils.hpp"
 #include "rendering/sky_system.hpp"
+#include "pipeline/custom_zone_discovery.hpp"
 
 namespace wowee {
 namespace core { class Window; }
@@ -188,6 +189,8 @@ public:
     game::ZoneManager* getZoneManager() { return zoneManager.get(); }
     LightingManager* getLightingManager() { return lightingManager.get(); }
 
+    const std::vector<pipeline::CustomZoneInfo>& getCustomZones() const { return customZones_; }
+
 private:
     void runDeferredWorldInitStep(float deltaTime);
 
@@ -267,6 +270,7 @@ private:
     void renderShadowPass();
     glm::mat4 computeLightSpaceMatrix();
 
+    std::vector<pipeline::CustomZoneInfo> customZones_;
     pipeline::AssetManager* cachedAssetManager = nullptr;
 
     // Spell visual effects — owned SpellVisualSystem (extracted from Renderer §4.4)

include/rendering/terrain_manager.hpp

@@ -201,6 +201,8 @@ public:
      * @param mapName Map name (e.g., "Azeroth", "Kalimdor")
      */
     void setMapName(const std::string& mapName) { this->mapName = mapName; }
+    bool isCustomZone() const { return isCustomZone_; }
+    void setCustomZone(bool custom) { isCustomZone_ = custom; }
 
     /**
      * Load a single tile
@@ -352,6 +354,7 @@ private:
     float timeSinceLastUpdate = 0.0f;
     float proactiveStreamTimer_ = 0.0f;
     bool taxiStreamingMode_ = false;
+    bool isCustomZone_ = false;
 
     // Tile size constants (WoW ADT specifications)
     // A tile (ADT) = 16x16 chunks = 533.33 units across

src/pipeline/asset_manager.cpp

@@ -312,23 +312,30 @@ std::shared_ptr<DBCFile> AssetManager::loadDBC(const std::string& name) {
     }
 
     // Check for JSON DBC from custom zones (wowee open format)
-    // JSON DBCs exported by the editor contain the same record data
-    // but the DBCFile::load() only handles binary — so JSON overrides
-    // are logged for now and will need a JSON→DBC converter in future.
     if (dbcData.empty()) {
         std::string baseName = name;
         auto dot = baseName.rfind('.');
         if (dot != std::string::npos) baseName = baseName.substr(0, dot);
-        for (const std::string& dir : {"custom_zones", "output"}) {
+        for (const char* dir : {"custom_zones", "output"}) {
             if (!std::filesystem::exists(dir)) continue;
             for (auto& entry : std::filesystem::directory_iterator(dir)) {
                 if (!entry.is_directory()) continue;
                 std::string jsonPath = entry.path().string() + "/data/" + baseName + ".json";
                 if (std::filesystem::exists(jsonPath)) {
-                    LOG_DEBUG("JSON DBC available (not yet loaded): ", jsonPath);
+                    std::ifstream jf(jsonPath, std::ios::binary | std::ios::ate);
+                    if (jf) {
+                        auto sz = jf.tellg();
+                        if (sz > 0) {
+                            dbcData.resize(static_cast<size_t>(sz));
+                            jf.seekg(0);
+                            jf.read(reinterpret_cast<char*>(dbcData.data()), sz);
+                            LOG_INFO("Loading JSON DBC override: ", jsonPath);
+                        }
+                    }
                     break;
                 }
             }
+            if (!dbcData.empty()) break;
         }
     }
 

src/pipeline/dbc_loader.cpp

@@ -1,5 +1,6 @@
 #include "pipeline/dbc_loader.hpp"
 #include "core/logger.hpp"
+#include <nlohmann/json.hpp>
 #include <cctype>
 #include <cstring>
 #include <set>
@@ -37,6 +38,15 @@ bool DBCFile::load(const std::vector<uint8_t>& dbcData) {
         return loadCSV(dbcData);
     }
 
+    // Detect JSON format: starts with '{'
+    if (dbcData[0] == '{' || (dbcData[0] <= ' ' && dbcData.size() > 1)) {
+        size_t start = 0;
+        while (start < dbcData.size() && dbcData[start] <= ' ') start++;
+        if (start < dbcData.size() && dbcData[start] == '{') {
+            return loadJSON(dbcData);
+        }
+    }
+
     if (dbcData.size() < sizeof(DBCHeader)) {
         LOG_ERROR("DBC data too small for header");
         return false;
@@ -368,5 +378,74 @@ bool DBCFile::loadCSV(const std::vector<uint8_t>& csvData) {
     return true;
 }
 
+bool DBCFile::loadJSON(const std::vector<uint8_t>& jsonData) {
+    try {
+        auto j = nlohmann::json::parse(jsonData.begin(), jsonData.end());
+
+        if (!j.contains("records") || !j["records"].is_array()) {
+            LOG_ERROR("JSON DBC: missing 'records' array");
+            return false;
+        }
+
+        const auto& records = j["records"];
+        if (records.empty()) {
+            LOG_WARNING("JSON DBC: empty records array");
+            return false;
+        }
+
+        fieldCount = j.value("fieldCount", 0u);
+        if (fieldCount == 0 && !records[0].empty()) {
+            fieldCount = static_cast<uint32_t>(records[0].size());
+        }
+        if (fieldCount == 0) return false;
+
+        recordSize = fieldCount * 4;
+        recordCount = static_cast<uint32_t>(records.size());
+
+        stringBlock.clear();
+        stringBlock.push_back(0);
+
+        recordData.resize(static_cast<size_t>(recordCount) * recordSize, 0);
+
+        for (uint32_t i = 0; i < recordCount; i++) {
+            const auto& row = records[i];
+            uint32_t* fields = reinterpret_cast<uint32_t*>(
+                recordData.data() + static_cast<size_t>(i) * recordSize);
+
+            uint32_t cols = std::min(fieldCount, static_cast<uint32_t>(row.size()));
+            for (uint32_t col = 0; col < cols; col++) {
+                const auto& val = row[col];
+                if (val.is_string()) {
+                    const std::string& str = val.get_ref<const std::string&>();
+                    if (str.empty()) {
+                        fields[col] = 0;
+                    } else {
+                        fields[col] = static_cast<uint32_t>(stringBlock.size());
+                        stringBlock.insert(stringBlock.end(), str.begin(), str.end());
+                        stringBlock.push_back(0);
+                    }
+                } else if (val.is_number_float()) {
+                    float f = val.get<float>();
+                    std::memcpy(&fields[col], &f, 4);
+                } else if (val.is_number_integer()) {
+                    fields[col] = val.get<uint32_t>();
+                }
+            }
+        }
+
+        stringBlockSize = static_cast<uint32_t>(stringBlock.size());
+        loaded = true;
+        idCacheBuilt = false;
+        idToIndexCache.clear();
+
+        LOG_INFO("Loaded JSON DBC: ", recordCount, " records, ",
+                 fieldCount, " fields, ", stringBlockSize, " string bytes");
+        return true;
+    } catch (const std::exception& e) {
+        LOG_ERROR("JSON DBC parse error: ", e.what());
+        return false;
+    }
+}
+
 } // namespace pipeline
 } // namespace wowee

src/pipeline/wowee_building.cpp

@@ -196,5 +196,69 @@ bool WoweeBuildingLoader::toWMOModel(const WoweeBuilding& building, WMOModel& ou
     return true;
 }
 
+WoweeBuilding WoweeBuildingLoader::fromWMO(const WMOModel& wmo, const std::string& name) {
+    WoweeBuilding bld;
+    bld.name = name.empty() ? "Converted WMO" : name;
+
+    float maxDist = 0.0f;
+    for (const auto& grp : wmo.groups) {
+        WoweeBuilding::Group wobGroup;
+        wobGroup.name = grp.name;
+        wobGroup.isOutdoor = (grp.flags & 0x08) != 0;
+        wobGroup.boundMin = grp.boundingBoxMin;
+        wobGroup.boundMax = grp.boundingBoxMax;
+
+        wobGroup.vertices.reserve(grp.vertices.size());
+        for (const auto& v : grp.vertices) {
+            WoweeBuilding::Vertex wv;
+            wv.position = v.position;
+            wv.normal = v.normal;
+            wv.texCoord = v.texCoord;
+            wv.color = v.color;
+            wobGroup.vertices.push_back(wv);
+
+            float d = glm::length(v.position);
+            if (d > maxDist) maxDist = d;
+        }
+
+        wobGroup.indices.reserve(grp.indices.size());
+        for (uint16_t idx : grp.indices)
+            wobGroup.indices.push_back(static_cast<uint32_t>(idx));
+
+        for (const auto& mat : wmo.materials) {
+            if (mat.texture1 < wmo.textures.size()) {
+                std::string texPath = wmo.textures[mat.texture1];
+                auto dot = texPath.rfind('.');
+                if (dot != std::string::npos)
+                    texPath = texPath.substr(0, dot) + ".png";
+                wobGroup.texturePaths.push_back(texPath);
+            }
+        }
+
+        bld.groups.push_back(std::move(wobGroup));
+    }
+
+    bld.boundRadius = maxDist;
+
+    for (const auto& doodad : wmo.doodads) {
+        auto nameIt = wmo.doodadNames.find(doodad.nameIndex);
+        if (nameIt == wmo.doodadNames.end()) continue;
+
+        WoweeBuilding::DoodadPlacement dp;
+        dp.modelPath = nameIt->second;
+        auto dot = dp.modelPath.rfind('.');
+        if (dot != std::string::npos)
+            dp.modelPath = dp.modelPath.substr(0, dot) + ".wom";
+        dp.position = doodad.position;
+        dp.rotation = glm::vec3(0.0f);
+        dp.scale = doodad.scale;
+        bld.doodads.push_back(dp);
+    }
+
+    LOG_INFO("WOB from WMO: ", bld.name, " (", bld.groups.size(), " groups, ",
+             bld.doodads.size(), " doodads)");
+    return bld;
+}
+
 } // namespace pipeline
 } // namespace wowee

src/rendering/renderer.cpp

@@ -1887,13 +1887,11 @@ bool Renderer::initializeRenderers(pipeline::AssetManager* assetManager, const s
     LOG_INFO("Initializing renderers for map: ", mapName);
 
     // Scan for custom zones on first initialization
-    static bool customZonesScanned = false;
-    if (!customZonesScanned) {
-        customZonesScanned = true;
-        auto customZones = pipeline::CustomZoneDiscovery::scan({"custom_zones", "output"});
-        if (!customZones.empty()) {
+    if (customZones_.empty()) {
+        customZones_ = pipeline::CustomZoneDiscovery::scan({"custom_zones", "output"});
+        if (!customZones_.empty()) {
             LOG_INFO("=== Custom Zones Available ===");
-            for (const auto& z : customZones) {
+            for (const auto& z : customZones_) {
                 LOG_INFO("  ", z.name, " (", z.directory, ")",
                          z.hasCreatures ? " [NPCs]" : "",
                          z.hasQuests ? " [Quests]" : "");

src/rendering/terrain_manager.cpp

@@ -597,6 +597,8 @@ std::shared_ptr<PendingTile> TerrainManager::prepareTile(int x, int y) {
             const std::string& wmoPath = pending->terrain.wmoNames[placement.nameId];
 
             // Check for WOB open format first (custom zone buildings)
+            bool wobLoaded = false;
+            pipeline::WMOModel wmoModel;
             {
                 std::string wobBase = wmoPath;
                 auto wobDot = wobBase.rfind('.');
@@ -607,10 +609,9 @@ std::shared_ptr<PendingTile> TerrainManager::prepareTile(int x, int y) {
                     if (pipeline::WoweeBuildingLoader::exists(prefix + wobBase)) {
                         auto wob = pipeline::WoweeBuildingLoader::load(prefix + wobBase);
                         if (wob.isValid()) {
-                            pipeline::WMOModel wobAsWmo;
-                            if (pipeline::WoweeBuildingLoader::toWMOModel(wob, wobAsWmo)) {
+                            if (pipeline::WoweeBuildingLoader::toWMOModel(wob, wmoModel)) {
                                 LOG_INFO("Loaded WOB building: ", prefix + wobBase);
-                                // TODO: feed wobAsWmo into the WMO render pipeline
+                                wobLoaded = true;
                             }
                         }
                         break;
@@ -618,37 +619,39 @@ std::shared_ptr<PendingTile> TerrainManager::prepareTile(int x, int y) {
                 }
             }
 
-            std::vector<uint8_t> wmoData = assetManager->readFile(wmoPath);
-            if (wmoData.empty()) continue;
+            if (!wobLoaded) {
+                std::vector<uint8_t> wmoData = assetManager->readFile(wmoPath);
+                if (wmoData.empty()) continue;
 
-            pipeline::WMOModel wmoModel = pipeline::WMOLoader::load(wmoData);
-            if (wmoModel.nGroups > 0) {
-                std::string basePath = wmoPath;
-                std::string extension;
-                if (basePath.size() > 4) {
-                    extension = basePath.substr(basePath.size() - 4);
-                    std::string extLower = extension;
-                    for (char& c : extLower) c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
-                    if (extLower == ".wmo") {
-                        basePath = basePath.substr(0, basePath.size() - 4);
+                wmoModel = pipeline::WMOLoader::load(wmoData);
+                if (wmoModel.nGroups > 0) {
+                    std::string basePath = wmoPath;
+                    std::string extension;
+                    if (basePath.size() > 4) {
+                        extension = basePath.substr(basePath.size() - 4);
+                        std::string extLower = extension;
+                        for (char& c : extLower) c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
+                        if (extLower == ".wmo") {
+                            basePath = basePath.substr(0, basePath.size() - 4);
+                        }
                     }
-                }
 
-                for (uint32_t gi = 0; gi < wmoModel.nGroups; gi++) {
-                    char groupSuffix[16];
-                    snprintf(groupSuffix, sizeof(groupSuffix), "_%03u%s", gi, extension.c_str());
-                    std::string groupPath = basePath + groupSuffix;
-                    std::vector<uint8_t> groupData = assetManager->readFile(groupPath);
-                    if (groupData.empty()) {
-                        snprintf(groupSuffix, sizeof(groupSuffix), "_%03u.wmo", gi);
-                        groupData = assetManager->readFile(basePath + groupSuffix);
-                    }
-                    if (groupData.empty()) {
-                        snprintf(groupSuffix, sizeof(groupSuffix), "_%03u.WMO", gi);
-                        groupData = assetManager->readFile(basePath + groupSuffix);
-                    }
-                    if (!groupData.empty()) {
-                        pipeline::WMOLoader::loadGroup(groupData, wmoModel, gi);
+                    for (uint32_t gi = 0; gi < wmoModel.nGroups; gi++) {
+                        char groupSuffix[16];
+                        snprintf(groupSuffix, sizeof(groupSuffix), "_%03u%s", gi, extension.c_str());
+                        std::string groupPath = basePath + groupSuffix;
+                        std::vector<uint8_t> groupData = assetManager->readFile(groupPath);
+                        if (groupData.empty()) {
+                            snprintf(groupSuffix, sizeof(groupSuffix), "_%03u.wmo", gi);
+                            groupData = assetManager->readFile(basePath + groupSuffix);
+                        }
+                        if (groupData.empty()) {
+                            snprintf(groupSuffix, sizeof(groupSuffix), "_%03u.WMO", gi);
+                            groupData = assetManager->readFile(basePath + groupSuffix);
+                        }
+                        if (!groupData.empty()) {
+                            pipeline::WMOLoader::loadGroup(groupData, wmoModel, gi);
+                        }
                     }
                 }
             }

tools/editor/editor_app.cpp

@@ -7,6 +7,7 @@
 #include "dbc_exporter.hpp"
 #include "pipeline/wowee_model.hpp"
 #include "pipeline/wowee_building.hpp"
+#include "pipeline/wmo_loader.hpp"
 #include "core/coordinates.hpp"
 #include "rendering/vk_context.hpp"
 #include "pipeline/adt_loader.hpp"
@@ -761,19 +762,36 @@ void EditorApp::exportZone(const std::string& outputDir) {
         std::unordered_set<std::string> convertedWMOs;
         for (const auto& obj : objectPlacer_.getObjects()) {
             if (obj.type == PlaceableType::WMO && !convertedWMOs.count(obj.path)) {
-                // Create a placeholder WOB (full WMO→WOB conversion needs group loading)
-                pipeline::WoweeBuilding bld;
-                bld.name = obj.path;
                 std::string wobPath = obj.path;
                 std::replace(wobPath.begin(), wobPath.end(), '\\', '/');
                 auto dot = wobPath.rfind('.');
                 if (dot != std::string::npos) wobPath = wobPath.substr(0, dot);
-                pipeline::WoweeBuildingLoader::save(bld, base + "/buildings/" + wobPath);
+
+                auto wmoData = assetManager_->readFile(obj.path);
+                if (!wmoData.empty()) {
+                    auto wmoModel = pipeline::WMOLoader::load(wmoData);
+                    if (wmoModel.nGroups > 0) {
+                        std::string wmoBase = obj.path;
+                        if (wmoBase.size() > 4) wmoBase = wmoBase.substr(0, wmoBase.size() - 4);
+                        for (uint32_t gi = 0; gi < wmoModel.nGroups; gi++) {
+                            char suffix[16];
+                            snprintf(suffix, sizeof(suffix), "_%03u.wmo", gi);
+                            auto gd = assetManager_->readFile(wmoBase + suffix);
+                            if (!gd.empty()) pipeline::WMOLoader::loadGroup(gd, wmoModel, gi);
+                        }
+                    }
+                    auto bld = pipeline::WoweeBuildingLoader::fromWMO(wmoModel, obj.path);
+                    pipeline::WoweeBuildingLoader::save(bld, base + "/buildings/" + wobPath);
+                } else {
+                    pipeline::WoweeBuilding bld;
+                    bld.name = obj.path;
+                    pipeline::WoweeBuildingLoader::save(bld, base + "/buildings/" + wobPath);
+                }
                 convertedWMOs.insert(obj.path);
             }
         }
         if (!convertedWMOs.empty())
-            LOG_INFO("Created ", convertedWMOs.size(), " WOB building placeholders");
+            LOG_INFO("Converted ", convertedWMOs.size(), " WMO buildings to WOB");
     }
 
     // Export used textures as PNG (open format replacement for BLP)

tools/editor/main.cpp

@@ -1,5 +1,7 @@
 #include "editor_app.hpp"
 #include "pipeline/wowee_model.hpp"
+#include "pipeline/wowee_building.hpp"
+#include "pipeline/wmo_loader.hpp"
 #include "pipeline/asset_manager.hpp"
 #include "pipeline/custom_zone_discovery.hpp"
 #include "core/logger.hpp"
@@ -13,6 +15,7 @@ static void printUsage(const char* argv0) {
     LOG_INFO("  --data <path>          Path to extracted WoW data (manifest.json)");
     LOG_INFO("  --adt <map> <x> <y>    Load an ADT tile on startup");
     LOG_INFO("  --convert-m2 <path>    Convert M2 model to WOM open format (no GUI)");
+    LOG_INFO("  --convert-wmo <path>   Convert WMO building to WOB open format (no GUI)");
     LOG_INFO("  --list-zones           List discovered custom zones and exit");
     LOG_INFO("  --version              Show version and format info");
     LOG_INFO("");
@@ -81,6 +84,46 @@ int main(int argc, char* argv[]) {
         }
     }
 
+    // Batch convert mode: --convert-wmo converts WMO to WOB
+    for (int i = 1; i < argc; i++) {
+        if (std::strcmp(argv[i], "--convert-wmo") == 0 && i + 1 < argc) {
+            std::string wmoPath = argv[++i];
+            LOG_INFO("Batch convert mode: WMO→WOB for ", wmoPath);
+            if (dataPath.empty()) dataPath = "Data";
+            wowee::pipeline::AssetManager am;
+            if (am.initialize(dataPath)) {
+                auto wmoData = am.readFile(wmoPath);
+                if (!wmoData.empty()) {
+                    auto wmoModel = wowee::pipeline::WMOLoader::load(wmoData);
+                    if (wmoModel.nGroups > 0) {
+                        std::string wmoBase = wmoPath;
+                        if (wmoBase.size() > 4) wmoBase = wmoBase.substr(0, wmoBase.size() - 4);
+                        for (uint32_t gi = 0; gi < wmoModel.nGroups; gi++) {
+                            char suffix[16];
+                            snprintf(suffix, sizeof(suffix), "_%03u.wmo", gi);
+                            auto gd = am.readFile(wmoBase + suffix);
+                            if (!gd.empty()) wowee::pipeline::WMOLoader::loadGroup(gd, wmoModel, gi);
+                        }
+                    }
+                    auto wob = wowee::pipeline::WoweeBuildingLoader::fromWMO(wmoModel, wmoPath);
+                    if (wob.isValid()) {
+                        std::string outPath = wmoPath;
+                        auto dot = outPath.rfind('.');
+                        if (dot != std::string::npos) outPath = outPath.substr(0, dot);
+                        wowee::pipeline::WoweeBuildingLoader::save(wob, "output/buildings/" + outPath);
+                        LOG_INFO("Converted: ", wmoPath, " → output/buildings/", outPath, ".wob");
+                    } else {
+                        LOG_ERROR("Failed to convert: ", wmoPath);
+                    }
+                } else {
+                    LOG_ERROR("WMO file not found: ", wmoPath);
+                }
+                am.shutdown();
+            }
+            return 0;
+        }
+    }
+
     if (dataPath.empty()) {
         dataPath = "Data";
         LOG_INFO("No --data path specified, using default: ", dataPath);