Use zone-specific floor cache files

Save/load floor cache per map (e.g., cache/wmo_floor_Azeroth.bin) instead
of a single global file. Saves current zone's cache before teleporting,
loads target zone's cache after terrain streaming completes.

.gitignore

@@ -61,3 +61,6 @@ Data/
 
 # Texture assets (not distributed - see README)
 assets/textures/
+
+# Runtime cache (floor heights, etc.)
+cache/

include/rendering/wmo_renderer.hpp

@@ -222,9 +222,11 @@ public:
     double getQueryTimeMs() const { return queryTimeMs; }
     uint32_t getQueryCallCount() const { return queryCallCount; }
 
-    // Floor cache persistence
-    bool saveFloorCache(const std::string& filepath) const;
-    bool loadFloorCache(const std::string& filepath);
+    // Floor cache persistence (zone-specific files)
+    void setMapName(const std::string& name) { mapName_ = name; }
+    const std::string& getMapName() const { return mapName_; }
+    bool saveFloorCache() const;  // Saves to cache/wmo_floor_<mapName>.bin
+    bool loadFloorCache();        // Loads from cache/wmo_floor_<mapName>.bin
     size_t getFloorCacheSize() const { return precomputedFloorGrid.size(); }
 
     // Pre-compute floor cache for all loaded WMO instances
@@ -428,6 +430,9 @@ private:
     // Asset manager for loading textures
     pipeline::AssetManager* assetManager = nullptr;
 
+    // Current map name for zone-specific floor cache
+    std::string mapName_;
+
     // Texture cache (path -> texture ID)
     std::unordered_map<std::string, GLuint> textureCache;
 

src/core/application.cpp

@@ -146,11 +146,6 @@ bool Application::initialize() {
         return false;
     }
 
-    // Load cached floor heights for faster collision
-    if (renderer->getWMORenderer()) {
-        renderer->getWMORenderer()->loadFloorCache("cache/wmo_floor_cache.bin");
-    }
-
     // Create UI manager
     uiManager = std::make_unique<ui::UIManager>();
     if (!uiManager->initialize(window.get())) {
@@ -320,7 +315,7 @@ void Application::shutdown() {
         size_t cacheSize = renderer->getWMORenderer()->getFloorCacheSize();
         if (cacheSize > 0) {
             LOG_INFO("Saving WMO floor cache (", cacheSize, " entries)...");
-            renderer->getWMORenderer()->saveFloorCache("cache/wmo_floor_cache.bin");
+            renderer->getWMORenderer()->saveFloorCache();
         }
     }
 
@@ -1207,6 +1202,11 @@ void Application::startSinglePlayer() {
 
     showStatus("Loading terrain...");
 
+    // Set map name for zone-specific floor cache
+    if (renderer->getWMORenderer()) {
+        renderer->getWMORenderer()->setMapName(mapName);
+    }
+
     // Try to load test terrain if WOW_DATA_PATH is set
     bool terrainOk = false;
     if (renderer && assetManager && assetManager->isInitialized()) {
@@ -1270,10 +1270,13 @@ void Application::startSinglePlayer() {
 
         LOG_INFO("Terrain streaming complete: ", terrainMgr->getLoadedTileCount(), " tiles loaded");
 
-        // Pre-compute floor cache if it wasn't loaded from file
-        if (renderer->getWMORenderer() && renderer->getWMORenderer()->getFloorCacheSize() == 0) {
-            showStatus("Pre-computing collision cache...");
-            renderer->getWMORenderer()->precomputeFloorCache();
+        // Load zone-specific floor cache, or precompute if none exists
+        if (renderer->getWMORenderer()) {
+            renderer->getWMORenderer()->loadFloorCache();
+            if (renderer->getWMORenderer()->getFloorCacheSize() == 0) {
+                showStatus("Pre-computing collision cache...");
+                renderer->getWMORenderer()->precomputeFloorCache();
+            }
         }
 
         // Re-snap camera to ground now that all surrounding tiles are loaded
@@ -1348,6 +1351,14 @@ void Application::teleportTo(int presetIndex) {
         renderer->getCameraController()->setDefaultSpawn(spawnRender, preset.yawDeg, preset.pitchDeg);
     }
 
+    // Save current map's floor cache before unloading
+    if (renderer && renderer->getWMORenderer()) {
+        auto* wmo = renderer->getWMORenderer();
+        if (wmo->getFloorCacheSize() > 0) {
+            wmo->saveFloorCache();
+        }
+    }
+
     // Unload all current terrain
     if (renderer && renderer->getTerrainManager()) {
         renderer->getTerrainManager()->unloadAll();
@@ -1360,10 +1371,13 @@ void Application::teleportTo(int presetIndex) {
                           std::to_string(tileX) + "_" + std::to_string(tileY) + ".adt";
     LOG_INFO("Teleport ADT tile [", tileX, ",", tileY, "]");
 
-    // Set map name on terrain manager
+    // Set map name on terrain manager and WMO renderer
     if (renderer && renderer->getTerrainManager()) {
         renderer->getTerrainManager()->setMapName(mapName);
     }
+    if (renderer && renderer->getWMORenderer()) {
+        renderer->getWMORenderer()->setMapName(mapName);
+    }
 
     // Load the initial tile
     bool terrainOk = false;
@@ -1403,9 +1417,12 @@ void Application::teleportTo(int presetIndex) {
 
         LOG_INFO("Teleport terrain streaming complete: ", terrainMgr->getLoadedTileCount(), " tiles loaded");
 
-        // Pre-compute floor cache for the new area
+        // Load zone-specific floor cache, or precompute if none exists
         if (renderer->getWMORenderer()) {
-            renderer->getWMORenderer()->precomputeFloorCache();
+            renderer->getWMORenderer()->loadFloorCache();
+            if (renderer->getWMORenderer()->getFloorCacheSize() == 0) {
+                renderer->getWMORenderer()->precomputeFloorCache();
+            }
         }
     }
 

src/rendering/wmo_renderer.cpp

@@ -514,7 +514,14 @@ void WMORenderer::resetQueryStats() {
     // Note: precomputedFloorGrid is persistent and not cleared per-frame
 }
 
-bool WMORenderer::saveFloorCache(const std::string& filepath) const {
+bool WMORenderer::saveFloorCache() const {
+    if (mapName_.empty()) {
+        core::Logger::getInstance().warning("Cannot save floor cache: no map name set");
+        return false;
+    }
+
+    std::string filepath = "cache/wmo_floor_" + mapName_ + ".bin";
+
     // Create directory if needed
     std::filesystem::path path(filepath);
     std::filesystem::path absPath = std::filesystem::absolute(path);
@@ -549,14 +556,21 @@ bool WMORenderer::saveFloorCache(const std::string& filepath) const {
         file.write(reinterpret_cast<const char*>(&height), sizeof(height));
     }
 
-    core::Logger::getInstance().info("Saved WMO floor cache: ", count, " entries to ", filepath);
+    core::Logger::getInstance().info("Saved WMO floor cache (", mapName_, "): ", count, " entries");
     return true;
 }
 
-bool WMORenderer::loadFloorCache(const std::string& filepath) {
+bool WMORenderer::loadFloorCache() {
+    if (mapName_.empty()) {
+        core::Logger::getInstance().warning("Cannot load floor cache: no map name set");
+        return false;
+    }
+
+    std::string filepath = "cache/wmo_floor_" + mapName_ + ".bin";
+
     std::ifstream file(filepath, std::ios::binary);
     if (!file) {
-        core::Logger::getInstance().info("No existing floor cache file: ", filepath);
+        core::Logger::getInstance().info("No existing floor cache for map: ", mapName_);
         return false;
     }
 
@@ -585,7 +599,7 @@ bool WMORenderer::loadFloorCache(const std::string& filepath) {
         precomputedFloorGrid[key] = height;
     }
 
-    core::Logger::getInstance().info("Loaded WMO floor cache: ", precomputedFloorGrid.size(), " entries from ", filepath);
+    core::Logger::getInstance().info("Loaded WMO floor cache (", mapName_, "): ", precomputedFloorGrid.size(), " entries");
     return true;
 }