refactor(core): decompose Application::setupUICallbacks() into 7 domain handlers

Extract ~1,700 lines / 60+ inline [this]-capturing lambdas from the monolithic
Application::setupUICallbacks() into 7 focused callback handler classes following
the ToastManager/ChatPanel::setupCallbacks() pattern already in the codebase.

New handlers (include/core/ + src/core/):
  - NPCInteractionCallbackHandler  NPC greeting/farewell/vendor/aggro voice
  - AudioCallbackHandler           Music, positional sound, level-up, achievement, LFG
  - EntitySpawnCallbackHandler     Creature/player/GO spawn, despawn, move, state
  - AnimationCallbackHandler       Death, respawn, combat, emotes, charge, sprint, vehicle
  - TransportCallbackHandler       Mount, taxi, transport spawn/move
  - WorldEntryCallbackHandler      World entry, unstuck, hearthstone, bind point
  - UIScreenCallbackHandler        Auth, realm selection, char selection/creation/deletion

application.cpp:  4,462 → 2,791 lines  (−1,671)
setupUICallbacks: ~1,700 → ~50 lines (thin orchestrator)

Deduplication:
  resolveSoundEntryPath()   — was 3× copy-paste of SoundEntries.dbc lookup
  resolveNpcVoiceType()     — was 4× copy-paste of display-ID→voice detection
  precacheNearbyTiles()     — was 3× copy-paste of 17×17 tile loop
  4 helper lambdas          — promoted to private methods on WorldEntryCallbackHandler

State migration out of Application:
  charge* (6 vars)          → AnimationCallbackHandler
  hearth*/worldEntry*/taxi* → WorldEntryCallbackHandler
  pendingCreatedCharacterName_ → UIScreenCallbackHandler

Bug fixes:
  - Duplicate `namespace core {` in application.hpp caused wowee::std pollution
  - AppState forward decl in ui_screen_callback_handler.hpp was at wrong scope
  - world_loader.cpp accessed moved member vars directly via friend; now uses handler API

CMakeLists.txt

@@ -490,6 +490,13 @@ set(WOWEE_SOURCES
     src/core/entity_spawner.cpp
     src/core/appearance_composer.cpp
     src/core/world_loader.cpp
+    src/core/npc_interaction_callback_handler.cpp
+    src/core/audio_callback_handler.cpp
+    src/core/entity_spawn_callback_handler.cpp
+    src/core/animation_callback_handler.cpp
+    src/core/transport_callback_handler.cpp
+    src/core/world_entry_callback_handler.cpp
+    src/core/ui_screen_callback_handler.cpp
     src/core/window.cpp
     src/core/input.cpp
     src/core/logger.cpp

include/core/animation_callback_handler.hpp

@@ -0,0 +1,50 @@
+#pragma once
+
+#include <cstdint>
+#include <glm/glm.hpp>
+
+namespace wowee {
+
+namespace rendering { class Renderer; }
+namespace game { class GameHandler; }
+namespace core { class EntitySpawner; }
+
+namespace core {
+
+/// Handles animation callbacks: death, respawn, swing, hit reaction, spell cast, emote,
+/// stun, stealth, health, ghost, stand state, loot, sprint, vehicle, charge.
+/// Owns charge rush state (interpolated in update).
+class AnimationCallbackHandler {
+public:
+    AnimationCallbackHandler(EntitySpawner& entitySpawner,
+                             rendering::Renderer& renderer,
+                             game::GameHandler& gameHandler);
+
+    void setupCallbacks();
+
+    /// Called each frame from Application::update() to drive charge interpolation.
+    /// Returns true if charge is active (player is externally driven).
+    bool updateCharge(float deltaTime);
+
+    // Charge state queries (used by Application::update for externallyDrivenMotion)
+    bool isCharging() const { return chargeActive_; }
+
+    // Reset charge state (logout/disconnect)
+    void resetChargeState();
+
+private:
+    EntitySpawner& entitySpawner_;
+    rendering::Renderer& renderer_;
+    game::GameHandler& gameHandler_;
+
+    // Charge rush state (moved from Application)
+    bool chargeActive_ = false;
+    float chargeTimer_ = 0.0f;
+    float chargeDuration_ = 0.0f;
+    glm::vec3 chargeStartPos_{0.0f};  // Render coordinates
+    glm::vec3 chargeEndPos_{0.0f};    // Render coordinates
+    uint64_t chargeTargetGuid_ = 0;
+};
+
+} // namespace core
+} // namespace wowee

include/core/application.hpp

@@ -34,6 +34,15 @@ namespace addons { class AddonManager; }
 
 namespace core {
 
+// Handler forward declarations
+class NPCInteractionCallbackHandler;
+class AudioCallbackHandler;
+class EntitySpawnCallbackHandler;
+class AnimationCallbackHandler;
+class TransportCallbackHandler;
+class WorldEntryCallbackHandler;
+class UIScreenCallbackHandler;
+
 enum class AppState {
     AUTHENTICATION,
     REALM_SELECTION,
@@ -134,9 +143,17 @@ private:
     std::unique_ptr<WorldLoader> worldLoader_;
     std::unique_ptr<audio::AudioCoordinator> audioCoordinator_;
 
+    // Callback handlers (extracted from setupUICallbacks)
+    std::unique_ptr<NPCInteractionCallbackHandler> npcInteractionCallbacks_;
+    std::unique_ptr<AudioCallbackHandler> audioCallbacks_;
+    std::unique_ptr<EntitySpawnCallbackHandler> entitySpawnCallbacks_;
+    std::unique_ptr<AnimationCallbackHandler> animationCallbacks_;
+    std::unique_ptr<TransportCallbackHandler> transportCallbacks_;
+    std::unique_ptr<WorldEntryCallbackHandler> worldEntryCallbacks_;
+    std::unique_ptr<UIScreenCallbackHandler> uiScreenCallbacks_;
+
     AppState state = AppState::AUTHENTICATION;
     bool running = false;
-    std::string pendingCreatedCharacterName_;  // Auto-select after character creation
     bool playerCharacterSpawned = false;
     bool npcsSpawned = false;
     bool spawnSnapToGround = true;
@@ -154,27 +171,11 @@ private:
     static inline const std::string emptyString_;
     static inline const std::vector<std::string> emptyStringVec_;
 
-    bool lastTaxiFlight_ = false;
-    float taxiLandingClampTimer_ = 0.0f;
-    float worldEntryMovementGraceTimer_ = 0.0f;
-
-    // Hearth teleport: freeze player until terrain loads at destination
-    bool hearthTeleportPending_ = false;
-    glm::vec3 hearthTeleportPos_{0.0f};  // render coords
-    float hearthTeleportTimer_ = 0.0f;   // timeout safety
     float facingSendCooldown_ = 0.0f;        // Rate-limits MSG_MOVE_SET_FACING
     float lastSentCanonicalYaw_ = 1000.0f;   // Sentinel — triggers first send
     float taxiStreamCooldown_ = 0.0f;
     bool idleYawned_ = false;
 
-    // Charge rush state
-    bool chargeActive_ = false;
-    float chargeTimer_ = 0.0f;
-    float chargeDuration_ = 0.0f;
-    glm::vec3 chargeStartPos_{0.0f};  // Render coordinates
-    glm::vec3 chargeEndPos_{0.0f};    // Render coordinates
-    uint64_t chargeTargetGuid_ = 0;
-
     bool wasAutoAttacking_ = false;
 
     // Quest marker billboard sprites (above NPCs)

include/core/audio_callback_handler.hpp

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <cstdint>
+#include <string>
+#include <optional>
+
+namespace wowee {
+
+namespace rendering { class Renderer; }
+namespace game { class GameHandler; }
+namespace audio { class AudioCoordinator; }
+namespace pipeline { class AssetManager; }
+namespace ui { class UIManager; }
+
+namespace core {
+
+/// Handles audio-related callbacks: music, sound effects, level-up, achievement, LFG.
+class AudioCallbackHandler {
+public:
+    AudioCallbackHandler(pipeline::AssetManager& assetManager,
+                         audio::AudioCoordinator* audioCoordinator,
+                         rendering::Renderer* renderer,
+                         ui::UIManager* uiManager,
+                         game::GameHandler& gameHandler);
+
+    void setupCallbacks();
+
+private:
+    /// Resolve SoundEntries.dbc → file path for a given soundId (eliminates 3x copy-paste)
+    std::optional<std::string> resolveSoundEntryPath(uint32_t soundId) const;
+
+    pipeline::AssetManager& assetManager_;
+    audio::AudioCoordinator* audioCoordinator_;
+    rendering::Renderer* renderer_;
+    ui::UIManager* uiManager_;
+    game::GameHandler& gameHandler_;
+};
+
+} // namespace core
+} // namespace wowee

include/core/entity_spawn_callback_handler.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <cstdint>
+#include <array>
+#include <functional>
+
+namespace wowee {
+
+namespace rendering { class Renderer; }
+namespace game { class GameHandler; }
+namespace core { class EntitySpawner; }
+
+namespace core {
+
+/// Handles entity spawn/despawn callbacks: creatures, players, game objects.
+class EntitySpawnCallbackHandler {
+public:
+    /// @param isLocalPlayerGuid Returns true if the given GUID is the local player (to skip self-spawn)
+    EntitySpawnCallbackHandler(EntitySpawner& entitySpawner,
+                               rendering::Renderer& renderer,
+                               game::GameHandler& gameHandler,
+                               std::function<bool(uint64_t)> isLocalPlayerGuid);
+
+    void setupCallbacks();
+
+private:
+    EntitySpawner& entitySpawner_;
+    rendering::Renderer& renderer_;
+    game::GameHandler& gameHandler_;
+    std::function<bool(uint64_t)> isLocalPlayerGuid_;
+};
+
+} // namespace core
+} // namespace wowee

include/core/npc_interaction_callback_handler.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <cstdint>
+#include <glm/glm.hpp>
+#include "audio/npc_voice_manager.hpp"
+
+namespace wowee {
+
+namespace rendering { class Renderer; }
+namespace game { class GameHandler; }
+namespace audio { class AudioCoordinator; }
+namespace core { class EntitySpawner; }
+
+namespace core {
+
+/// Handles NPC interaction callbacks: greeting, farewell, vendor, aggro voice lines.
+class NPCInteractionCallbackHandler {
+public:
+    NPCInteractionCallbackHandler(EntitySpawner& entitySpawner,
+                                  rendering::Renderer* renderer,
+                                  game::GameHandler& gameHandler,
+                                  audio::AudioCoordinator* audioCoordinator);
+
+    void setupCallbacks();
+
+private:
+    /// Resolve NPC voice type from GUID (eliminates 4x copy-paste of display-ID lookup)
+    audio::VoiceType resolveNpcVoiceType(uint64_t guid) const;
+
+    EntitySpawner& entitySpawner_;
+    rendering::Renderer* renderer_;
+    game::GameHandler& gameHandler_;
+    audio::AudioCoordinator* audioCoordinator_;
+};
+
+} // namespace core
+} // namespace wowee

include/core/transport_callback_handler.hpp

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <cstdint>
+#include <vector>
+#include <glm/glm.hpp>
+
+namespace wowee {
+
+namespace rendering { class Renderer; }
+namespace game { class GameHandler; }
+namespace core { class EntitySpawner; class WorldLoader; }
+
+namespace core {
+
+/// Handles transport-related callbacks: transport spawn/move, taxi, mount.
+class TransportCallbackHandler {
+public:
+    TransportCallbackHandler(EntitySpawner& entitySpawner,
+                             rendering::Renderer& renderer,
+                             game::GameHandler& gameHandler,
+                             WorldLoader* worldLoader);
+
+    void setupCallbacks();
+
+private:
+    EntitySpawner& entitySpawner_;
+    rendering::Renderer& renderer_;
+    game::GameHandler& gameHandler_;
+    WorldLoader* worldLoader_;
+};
+
+} // namespace core
+} // namespace wowee

include/core/ui_screen_callback_handler.hpp

@@ -0,0 +1,46 @@
+#pragma once
+
+#include <cstdint>
+#include <functional>
+#include <string>
+
+namespace wowee {
+
+namespace ui { class UIManager; }
+namespace game { class GameHandler; class ExpansionRegistry; }
+namespace auth { class AuthHandler; }
+namespace pipeline { class AssetManager; }
+
+namespace core {
+
+// Forward-declared in application.hpp
+enum class AppState;
+
+/// Handles authentication, realm selection, character selection/creation UI callbacks.
+/// Owns pendingCreatedCharacterName_.
+class UIScreenCallbackHandler {
+public:
+    using SetStateFn = std::function<void(AppState)>;
+
+    UIScreenCallbackHandler(ui::UIManager& uiManager,
+                            game::GameHandler& gameHandler,
+                            auth::AuthHandler& authHandler,
+                            game::ExpansionRegistry* expansionRegistry,
+                            pipeline::AssetManager* assetManager,
+                            SetStateFn setState);
+
+    void setupCallbacks();
+
+private:
+    ui::UIManager& uiManager_;
+    game::GameHandler& gameHandler_;
+    auth::AuthHandler& authHandler_;
+    game::ExpansionRegistry* expansionRegistry_;
+    pipeline::AssetManager* assetManager_;
+    SetStateFn setState_;
+
+    std::string pendingCreatedCharacterName_;  // Auto-select after character creation
+};
+
+} // namespace core
+} // namespace wowee

include/core/world_entry_callback_handler.hpp

@@ -0,0 +1,78 @@
+#pragma once
+
+#include <cstdint>
+#include <optional>
+#include <glm/glm.hpp>
+
+namespace wowee {
+
+namespace rendering { class Renderer; }
+namespace game { class GameHandler; }
+namespace pipeline { class AssetManager; }
+namespace audio { class AudioCoordinator; }
+namespace core { class EntitySpawner; class WorldLoader; }
+
+namespace core {
+
+/// Handles world entry, unstuck, hearthstone, and bind point callbacks.
+/// Owns hearth-teleport state and worldEntryMovementGraceTimer.
+class WorldEntryCallbackHandler {
+public:
+    WorldEntryCallbackHandler(rendering::Renderer& renderer,
+                              game::GameHandler& gameHandler,
+                              WorldLoader* worldLoader,
+                              EntitySpawner* entitySpawner,
+                              audio::AudioCoordinator* audioCoordinator,
+                              pipeline::AssetManager* assetManager);
+
+    void setupCallbacks();
+
+    /// Called each frame from Application::update() to manage hearth-teleport freeze/thaw.
+    void update(float deltaTime);
+
+    // State queries (used by Application::update)
+    float getWorldEntryMovementGraceTimer() const { return worldEntryMovementGraceTimer_; }
+    void setWorldEntryMovementGraceTimer(float t) { worldEntryMovementGraceTimer_ = t; }
+    bool isHearthTeleportPending() const { return hearthTeleportPending_; }
+
+    // Reset state (logout/disconnect)
+    void resetState();
+
+    // Taxi state (managed by Application::update, but tracked here for clarity)
+    bool getLastTaxiFlight() const { return lastTaxiFlight_; }
+    void setLastTaxiFlight(bool v) { lastTaxiFlight_ = v; }
+    float getTaxiLandingClampTimer() const { return taxiLandingClampTimer_; }
+    void setTaxiLandingClampTimer(float t) { taxiLandingClampTimer_ = t; }
+
+private:
+    /// Sample best floor height at (x, y) from terrain, WMO, and M2 (eliminates 3x duplication)
+    std::optional<float> sampleBestFloorAt(float x, float y, float probeZ) const;
+
+    /// Clear stuck movement state on player
+    void clearStuckMovement();
+
+    /// Sync teleported render position to server
+    void syncTeleportedPositionToServer(const glm::vec3& renderPos);
+
+    /// Force server-side teleport via GM command
+    void forceServerTeleportCommand(const glm::vec3& renderPos);
+
+    rendering::Renderer& renderer_;
+    game::GameHandler& gameHandler_;
+    WorldLoader* worldLoader_;
+    EntitySpawner* entitySpawner_;
+    audio::AudioCoordinator* audioCoordinator_;
+    pipeline::AssetManager* assetManager_;
+
+    // Hearth teleport: freeze player until terrain loads at destination (moved from Application)
+    bool hearthTeleportPending_ = false;
+    glm::vec3 hearthTeleportPos_{0.0f};  // render coords
+    float hearthTeleportTimer_ = 0.0f;   // timeout safety
+
+    float worldEntryMovementGraceTimer_ = 0.0f;
+    bool lastTaxiFlight_ = false;
+    float taxiLandingClampTimer_ = 0.0f;
+};
+
+} // namespace core
+} // namespace wowee

src/core/animation_callback_handler.cpp

@@ -0,0 +1,548 @@
+#include "core/animation_callback_handler.hpp"
+#include "core/entity_spawner.hpp"
+#include "core/coordinates.hpp"
+#include "core/logger.hpp"
+#include "rendering/renderer.hpp"
+#include "rendering/character_renderer.hpp"
+#include "rendering/camera_controller.hpp"
+#include "rendering/animation_controller.hpp"
+#include "rendering/animation/animation_ids.hpp"
+#include "game/game_handler.hpp"
+#include "game/world_packets.hpp"
+#include "audio/audio_engine.hpp"
+
+#include <cmath>
+#include <algorithm>
+
+namespace wowee { namespace core {
+
+AnimationCallbackHandler::AnimationCallbackHandler(
+    EntitySpawner& entitySpawner,
+    rendering::Renderer& renderer,
+    game::GameHandler& gameHandler)
+    : entitySpawner_(entitySpawner)
+    , renderer_(renderer)
+    , gameHandler_(gameHandler)
+{
+}
+
+void AnimationCallbackHandler::resetChargeState() {
+    chargeActive_ = false;
+    chargeTimer_ = 0.0f;
+    chargeDuration_ = 0.0f;
+    chargeTargetGuid_ = 0;
+}
+
+bool AnimationCallbackHandler::updateCharge(float deltaTime) {
+    if (!chargeActive_) return false;
+
+    // Warrior Charge: lerp position from start to end using smoothstep
+    chargeTimer_ += deltaTime;
+    float t = std::min(chargeTimer_ / chargeDuration_, 1.0f);
+    // smoothstep for natural acceleration/deceleration
+    float s = t * t * (3.0f - 2.0f * t);
+    glm::vec3 renderPos = chargeStartPos_ + (chargeEndPos_ - chargeStartPos_) * s;
+    renderer_.getCharacterPosition() = renderPos;
+
+    // Keep facing toward target and emit charge effect
+    glm::vec3 dir = chargeEndPos_ - chargeStartPos_;
+    float dirLenSq = glm::dot(dir, dir);
+    if (dirLenSq > 1e-4f) {
+        dir *= glm::inversesqrt(dirLenSq);
+        float yawDeg = glm::degrees(std::atan2(dir.x, dir.y));
+        renderer_.setCharacterYaw(yawDeg);
+        renderer_.emitChargeEffect(renderPos, dir);
+    }
+
+    // Sync to game handler
+    glm::vec3 canonical = core::coords::renderToCanonical(renderPos);
+    gameHandler_.setPosition(canonical.x, canonical.y, canonical.z);
+
+    // Update camera follow target
+    if (renderer_.getCameraController()) {
+        glm::vec3* followTarget = renderer_.getCameraController()->getFollowTargetMutable();
+        if (followTarget) {
+            *followTarget = renderPos;
+        }
+    }
+
+    // Charge complete
+    if (t >= 1.0f) {
+        chargeActive_ = false;
+        renderer_.setCharging(false);
+        renderer_.stopChargeEffect();
+        renderer_.getCameraController()->setExternalFollow(false);
+        renderer_.getCameraController()->setExternalMoving(false);
+
+        // Snap to melee range of target's CURRENT position (it may have moved)
+        if (chargeTargetGuid_ != 0) {
+            auto targetEntity = gameHandler_.getEntityManager().getEntity(chargeTargetGuid_);
+            if (targetEntity) {
+                glm::vec3 targetCanonical(targetEntity->getX(), targetEntity->getY(), targetEntity->getZ());
+                glm::vec3 targetRender = core::coords::canonicalToRender(targetCanonical);
+                glm::vec3 toTarget = targetRender - renderPos;
+                float dSq = glm::dot(toTarget, toTarget);
+                if (dSq > 2.25f) {
+                    // Place us 1.5 units from target (well within 8-unit melee range)
+                    glm::vec3 snapPos = targetRender - toTarget * (1.5f * glm::inversesqrt(dSq));
+                    renderer_.getCharacterPosition() = snapPos;
+                    glm::vec3 snapCanonical = core::coords::renderToCanonical(snapPos);
+                    gameHandler_.setPosition(snapCanonical.x, snapCanonical.y, snapCanonical.z);
+                    if (renderer_.getCameraController()) {
+                        glm::vec3* ft = renderer_.getCameraController()->getFollowTargetMutable();
+                        if (ft) *ft = snapPos;
+                    }
+                }
+            }
+            gameHandler_.startAutoAttack(chargeTargetGuid_);
+            renderer_.triggerMeleeSwing();
+        }
+
+        // Send movement heartbeat so server knows our new position
+        gameHandler_.sendMovement(game::Opcode::MSG_MOVE_HEARTBEAT);
+    }
+
+    return true; // charge is active
+}
+
+void AnimationCallbackHandler::setupCallbacks() {
+    // Sprint aura callback — use SPRINT(143) animation when sprint-type buff is active
+    gameHandler_.setSprintAuraCallback([this](bool active) {
+        auto* ac = renderer_.getAnimationController();
+        if (ac) ac->setSprintAuraActive(active);
+    });
+
+    // Vehicle state callback — hide player character when inside a vehicle
+    gameHandler_.setVehicleStateCallback([this](bool entered, uint32_t /*vehicleId*/) {
+        auto* cr = renderer_.getCharacterRenderer();
+        uint32_t instId = renderer_.getCharacterInstanceId();
+        if (!cr || instId == 0) return;
+        cr->setInstanceVisible(instId, !entered);
+    });
+
+    // Charge callback — warrior rushes toward target
+    gameHandler_.setChargeCallback([this](uint64_t targetGuid, float tx, float ty, float tz) {
+        if (!renderer_.getCameraController()) return;
+
+        // Get current player position in render coords
+        glm::vec3 startRender = renderer_.getCharacterPosition();
+        // Convert target from canonical to render
+        glm::vec3 targetRender = core::coords::canonicalToRender(glm::vec3(tx, ty, tz));
+
+        // Compute direction and stop 2.0 units short (melee reach)
+        glm::vec3 dir = targetRender - startRender;
+        float distSq = glm::dot(dir, dir);
+        if (distSq < 9.0f) return; // Too close, nothing to do
+        float invDist = glm::inversesqrt(distSq);
+        glm::vec3 dirNorm = dir * invDist;
+        glm::vec3 endRender = targetRender - dirNorm * 2.0f;
+
+        // Face toward target BEFORE starting charge
+        float yawRad = std::atan2(dirNorm.x, dirNorm.y);
+        float yawDeg = glm::degrees(yawRad);
+        renderer_.setCharacterYaw(yawDeg);
+        // Sync canonical orientation to server so it knows we turned
+        float canonicalYaw = core::coords::normalizeAngleRad(glm::radians(180.0f - yawDeg));
+        gameHandler_.setOrientation(canonicalYaw);
+        gameHandler_.sendMovement(game::Opcode::MSG_MOVE_SET_FACING);
+
+        // Set charge state
+        chargeActive_ = true;
+        chargeTimer_ = 0.0f;
+        chargeDuration_ = std::max(std::sqrt(distSq) / 25.0f, 0.3f); // ~25 units/sec
+        chargeStartPos_ = startRender;
+        chargeEndPos_ = endRender;
+        chargeTargetGuid_ = targetGuid;
+
+        // Disable player input, play charge animation
+        renderer_.getCameraController()->setExternalFollow(true);
+        renderer_.getCameraController()->clearMovementInputs();
+        renderer_.setCharging(true);
+
+        // Start charge visual effect (red haze + dust)
+        glm::vec3 chargeDir = glm::normalize(endRender - startRender);
+        renderer_.startChargeEffect(startRender, chargeDir);
+
+        // Play charge whoosh sound (try multiple paths)
+        auto& audio = audio::AudioEngine::instance();
+        if (!audio.playSound2D("Sound\\Spells\\Charge.wav", 0.8f)) {
+            if (!audio.playSound2D("Sound\\Spells\\charge.wav", 0.8f)) {
+                if (!audio.playSound2D("Sound\\Spells\\SpellCharge.wav", 0.8f)) {
+                    // Fallback: weapon whoosh
+                    audio.playSound2D("Sound\\Item\\Weapons\\WeaponSwings\\mWooshLarge1.wav", 0.9f);
+                }
+            }
+        }
+    });
+
+    // NPC/player death callback (online mode) - play death animation
+    gameHandler_.setNpcDeathCallback([this](uint64_t guid) {
+        entitySpawner_.markCreatureDead(guid);
+        if (!renderer_.getCharacterRenderer()) return;
+        uint32_t instanceId = entitySpawner_.getCreatureInstanceId(guid);
+        if (instanceId == 0) instanceId = entitySpawner_.getPlayerInstanceId(guid);
+        if (instanceId != 0) {
+            renderer_.getCharacterRenderer()->playAnimation(instanceId, rendering::anim::DEATH, false);
+        }
+    });
+
+    // NPC/player respawn callback (online mode) - play rise animation then idle
+    gameHandler_.setNpcRespawnCallback([this](uint64_t guid) {
+        entitySpawner_.unmarkCreatureDead(guid);
+        if (!renderer_.getCharacterRenderer()) return;
+        uint32_t instanceId = entitySpawner_.getCreatureInstanceId(guid);
+        if (instanceId == 0) instanceId = entitySpawner_.getPlayerInstanceId(guid);
+        if (instanceId != 0) {
+            auto* cr = renderer_.getCharacterRenderer();
+            // Play RISE one-shot (auto-returns to STAND when finished), fall back to STAND
+            if (cr->hasAnimation(instanceId, rendering::anim::RISE))
+                cr->playAnimation(instanceId, rendering::anim::RISE, false);
+            else
+                cr->playAnimation(instanceId, rendering::anim::STAND, true);
+        }
+    });
+
+    // NPC/player swing callback (online mode) - play attack animation
+    // Probes the model for the best available attack animation:
+    //   ATTACK_1H(17) → ATTACK_2H(18) → ATTACK_2H_LOOSE(19) → ATTACK_UNARMED(16)
+    gameHandler_.setNpcSwingCallback([this](uint64_t guid) {
+        if (!renderer_.getCharacterRenderer()) return;
+        uint32_t instanceId = entitySpawner_.getCreatureInstanceId(guid);
+        if (instanceId == 0) instanceId = entitySpawner_.getPlayerInstanceId(guid);
+        if (instanceId != 0) {
+            auto* cr = renderer_.getCharacterRenderer();
+            static const uint32_t attackAnims[] = {
+                rendering::anim::ATTACK_1H,
+                rendering::anim::ATTACK_2H,
+                rendering::anim::ATTACK_2H_LOOSE,
+                rendering::anim::ATTACK_UNARMED
+            };
+            bool played = false;
+            for (uint32_t anim : attackAnims) {
+                if (cr->hasAnimation(instanceId, anim)) {
+                    cr->playAnimation(instanceId, anim, false);
+                    played = true;
+                    break;
+                }
+            }
+            if (!played) cr->playAnimation(instanceId, rendering::anim::ATTACK_UNARMED, false);
+        }
+    });
+
+    // Hit reaction callback — plays one-shot dodge/block/wound animation on the victim
+    gameHandler_.setHitReactionCallback([this](uint64_t victimGuid, game::GameHandler::HitReaction reaction) {
+        auto* cr = renderer_.getCharacterRenderer();
+        if (!cr) return;
+
+        // Determine animation based on reaction type
+        uint32_t animId = rendering::anim::COMBAT_WOUND;
+        switch (reaction) {
+            case game::GameHandler::HitReaction::DODGE:      animId = rendering::anim::DODGE; break;
+            case game::GameHandler::HitReaction::PARRY:      break; // Parry already handled by existing system
+            case game::GameHandler::HitReaction::BLOCK:      animId = rendering::anim::BLOCK; break;
+            case game::GameHandler::HitReaction::SHIELD_BLOCK: animId = rendering::anim::SHIELD_BLOCK; break;
+            case game::GameHandler::HitReaction::CRIT_WOUND: animId = rendering::anim::COMBAT_CRITICAL; break;
+            case game::GameHandler::HitReaction::WOUND:      animId = rendering::anim::COMBAT_WOUND; break;
+        }
+
+        // For local player: use AnimationController state
+        bool isLocalPlayer = (victimGuid == gameHandler_.getPlayerGuid());
+        if (isLocalPlayer) {
+            auto* ac = renderer_.getAnimationController();
+            if (ac) {
+                uint32_t charInstId = renderer_.getCharacterInstanceId();
+                if (charInstId && cr->hasAnimation(charInstId, animId))
+                    ac->triggerHitReaction(animId);
+            }
+            return;
+        }
+
+        // For NPCs/other players: direct playAnimation
+        uint32_t instanceId = entitySpawner_.getCreatureInstanceId(victimGuid);
+        if (instanceId == 0) instanceId = entitySpawner_.getPlayerInstanceId(victimGuid);
+        if (instanceId != 0 && cr->hasAnimation(instanceId, animId))
+            cr->playAnimation(instanceId, animId, false);
+    });
+
+    // Stun state callback — enters/exits STUNNED animation on local player
+    gameHandler_.setStunStateCallback([this](bool stunned) {
+        auto* ac = renderer_.getAnimationController();
+        if (ac) ac->setStunned(stunned);
+    });
+
+    // Stealth state callback — switches to stealth animation variants
+    gameHandler_.setStealthStateCallback([this](bool stealthed) {
+        auto* ac = renderer_.getAnimationController();
+        if (ac) ac->setStealthed(stealthed);
+    });
+
+    // Player health callback — switches to wounded idle when HP < 20%
+    gameHandler_.setPlayerHealthCallback([this](uint32_t health, uint32_t maxHealth) {
+        auto* ac = renderer_.getAnimationController();
+        if (!ac) return;
+        bool lowHp = (maxHealth > 0) && (health > 0) && (health * 5 <= maxHealth);
+        ac->setLowHealth(lowHp);
+    });
+
+    // Unit animation hint callback — plays jump (38=JumpMid) animation on other players/NPCs.
+    // Swim/walking state is now authoritative from the move-flags callback below.
+    // animId=38 (JumpMid): airborne jump animation; land detection is via per-frame sync.
+    gameHandler_.setUnitAnimHintCallback([this](uint64_t guid, uint32_t animId) {
+        auto* cr = renderer_.getCharacterRenderer();
+        if (!cr) return;
+        uint32_t instanceId = entitySpawner_.getPlayerInstanceId(guid);
+        if (instanceId == 0) instanceId = entitySpawner_.getCreatureInstanceId(guid);
+        if (instanceId == 0) return;
+        // Don't override Death animation
+        uint32_t curAnim = 0; float curT = 0.0f, curDur = 0.0f;
+        if (cr->getAnimationState(instanceId, curAnim, curT, curDur) && curAnim == rendering::anim::DEATH) return;
+        cr->playAnimation(instanceId, animId, /*loop=*/true);
+    });
+
+    // Unit move-flags callback — updates swimming and walking state from every MSG_MOVE_* packet.
+    // This is more reliable than opcode-based hints for cold joins and heartbeats:
+    // a player already swimming when we join will have SWIMMING set on the first heartbeat.
+    // Walking(4) vs Running(5) is also driven here from the WALKING flag.
+    gameHandler_.setUnitMoveFlagsCallback([this](uint64_t guid, uint32_t moveFlags) {
+        const bool isSwimming = (moveFlags & static_cast<uint32_t>(game::MovementFlags::SWIMMING)) != 0;
+        const bool isWalking  = (moveFlags & static_cast<uint32_t>(game::MovementFlags::WALKING))  != 0;
+        const bool isFlying   = (moveFlags & static_cast<uint32_t>(game::MovementFlags::FLYING))   != 0;
+        auto& swimState = entitySpawner_.getCreatureSwimmingState();
+        auto& walkState = entitySpawner_.getCreatureWalkingState();
+        auto& flyState  = entitySpawner_.getCreatureFlyingState();
+        if (isSwimming) swimState[guid] = true;
+        else            swimState.erase(guid);
+        if (isWalking)  walkState[guid] = true;
+        else            walkState.erase(guid);
+        if (isFlying)   flyState[guid] = true;
+        else            flyState.erase(guid);
+    });
+
+    // Emote animation callback — play server-driven emote animations on NPCs and other players.
+    // When emoteAnim is 0, the NPC's emote state was cleared → revert to STAND.
+    // Non-zero values from UNIT_NPC_EMOTESTATE updates are persistent (played looping).
+    gameHandler_.setEmoteAnimCallback([this](uint64_t guid, uint32_t emoteAnim) {
+        auto* cr = renderer_.getCharacterRenderer();
+        if (!cr) return;
+        // Look up creature instance first, then online players
+        uint32_t emoteInstanceId = entitySpawner_.getCreatureInstanceId(guid);
+        if (emoteInstanceId != 0) {
+            if (emoteAnim == 0) {
+                // Emote state cleared → return to idle
+                cr->playAnimation(emoteInstanceId, rendering::anim::STAND, true);
+            } else {
+                cr->playAnimation(emoteInstanceId, emoteAnim, false);
+            }
+            return;
+        }
+        emoteInstanceId = entitySpawner_.getPlayerInstanceId(guid);
+        if (emoteInstanceId != 0) {
+            cr->playAnimation(emoteInstanceId, emoteAnim, false);
+        }
+    });
+
+    // Spell cast animation callback — play cast animation on caster (player or NPC/other player)
+    // WoW-accurate 3-phase spell animation sequence:
+    //   Phase 1: SPELL_PRECAST (31)              — one-shot wind-up
+    //   Phase 2: READY_SPELL_DIRECTED/OMNI (51/52) — looping hold while cast bar fills
+    //   Phase 3: SPELL_CAST_DIRECTED/OMNI/AREA (53/54/33) — one-shot release at completion
+    // Channels use CHANNEL_CAST_DIRECTED/OMNI (124/125) or SPELL_CHANNEL_DIRECTED_OMNI (201).
+    // castType comes from the spell packet's targetGuid:
+    //   DIRECTED — spell targets a specific unit  (Frostbolt, Heal)
+    //   OMNI     — self-cast / no explicit target (Arcane Explosion, buffs)
+    //   AREA     — ground-targeted AoE           (Blizzard, Rain of Fire)
+    gameHandler_.setSpellCastAnimCallback([this](uint64_t guid, bool start, bool isChannel,
+                                                  game::SpellCastType castType) {
+        auto* cr = renderer_.getCharacterRenderer();
+        if (!cr) return;
+
+        // Determine if this is the local player
+        bool isLocalPlayer = false;
+        uint32_t instanceId = 0;
+        {
+            uint32_t charInstId = renderer_.getCharacterInstanceId();
+            if (charInstId != 0 && guid == gameHandler_.getPlayerGuid()) {
+                instanceId = charInstId;
+                isLocalPlayer = true;
+            }
+        }
+        if (instanceId == 0) instanceId = entitySpawner_.getCreatureInstanceId(guid);
+        if (instanceId == 0) instanceId = entitySpawner_.getPlayerInstanceId(guid);
+        if (instanceId == 0) return;
+
+        const bool isDirected = (castType == game::SpellCastType::DIRECTED);
+        const bool isArea     = (castType == game::SpellCastType::AREA);
+
+        if (start) {
+            // Detect fishing spells (channeled) — use FISHING_LOOP instead of generic cast
+            auto isFishingSpell = [](uint32_t spellId) {
+                return spellId == 7620 || spellId == 7731 || spellId == 7732 ||
+                       spellId == 18248 || spellId == 33095 || spellId == 51294;
+            };
+            uint32_t currentSpell = isLocalPlayer ? gameHandler_.getCurrentCastSpellId() : 0;
+            bool isFishing = isChannel && isFishingSpell(currentSpell);
+
+            if (isFishing && cr->hasAnimation(instanceId, rendering::anim::FISHING_LOOP)) {
+                // Fishing: use FISHING_LOOP (looping idle) for the channel duration
+                if (isLocalPlayer) {
+                    auto* ac = renderer_.getAnimationController();
+                    if (ac) ac->startSpellCast(0, rendering::anim::FISHING_LOOP, true, 0);
+                } else {
+                    cr->playAnimation(instanceId, rendering::anim::FISHING_LOOP, true);
+                }
+            } else {
+            // Helper: pick first animation the model supports from a list
+            auto pickFirst = [&](std::initializer_list<uint32_t> ids) -> uint32_t {
+                for (uint32_t id : ids)
+                    if (cr->hasAnimation(instanceId, id)) return id;
+                return 0;
+            };
+
+            // Phase 1: Precast wind-up (one-shot, non-channels only)
+            uint32_t precastAnim = 0;
+            if (!isChannel) {
+                precastAnim = pickFirst({rendering::anim::SPELL_PRECAST});
+            }
+
+            // Phase 2: Cast hold (looping while cast bar fills / channel active)
+            uint32_t castAnim = 0;
+            if (isChannel) {
+                // Channel hold: prefer DIRECTED/OMNI based on spell target classification
+                if (isDirected) {
+                    castAnim = pickFirst({
+                        rendering::anim::CHANNEL_CAST_DIRECTED,
+                        rendering::anim::CHANNEL_CAST_OMNI,
+                        rendering::anim::SPELL_CHANNEL_DIRECTED_OMNI,
+                        rendering::anim::READY_SPELL_DIRECTED,
+                        rendering::anim::SPELL
+                    });
+                } else {
+                    // OMNI or AREA channels (Blizzard channel, Tranquility, etc.)
+                    castAnim = pickFirst({
+                        rendering::anim::CHANNEL_CAST_OMNI,
+                        rendering::anim::CHANNEL_CAST_DIRECTED,
+                        rendering::anim::SPELL_CHANNEL_DIRECTED_OMNI,
+                        rendering::anim::READY_SPELL_OMNI,
+                        rendering::anim::SPELL
+                    });
+                }
+            } else {
+                // Regular cast hold: READY_SPELL_DIRECTED/OMNI while cast bar fills
+                if (isDirected) {
+                    castAnim = pickFirst({
+                        rendering::anim::READY_SPELL_DIRECTED,
+                        rendering::anim::READY_SPELL_OMNI,
+                        rendering::anim::SPELL_CAST_DIRECTED,
+                        rendering::anim::SPELL_CAST,
+                        rendering::anim::SPELL
+                    });
+                } else {
+                    // OMNI (self-buff) or AREA (AoE targeting)
+                    castAnim = pickFirst({
+                        rendering::anim::READY_SPELL_OMNI,
+                        rendering::anim::READY_SPELL_DIRECTED,
+                        rendering::anim::SPELL_CAST_OMNI,
+                        rendering::anim::SPELL_CAST,
+                        rendering::anim::SPELL
+                    });
+                }
+            }
+            if (castAnim == 0) castAnim = rendering::anim::SPELL;
+
+            // Phase 3: Finalization release (one-shot after cast completes)
+            // Animation chosen by spell target type: AREA → SPELL_CAST_AREA,
+            // DIRECTED → SPELL_CAST_DIRECTED, OMNI → SPELL_CAST_OMNI
+            uint32_t finalizeAnim = 0;
+            if (isLocalPlayer && !isChannel) {
+                if (isArea) {
+                    // Ground-targeted AoE: SPELL_CAST_AREA → SPELL_CAST_OMNI
+                    finalizeAnim = pickFirst({
+                        rendering::anim::SPELL_CAST_AREA,
+                        rendering::anim::SPELL_CAST_OMNI,
+                        rendering::anim::SPELL_CAST,
+                        rendering::anim::SPELL
+                    });
+                } else if (isDirected) {
+                    // Single-target: SPELL_CAST_DIRECTED → SPELL_CAST_OMNI
+                    finalizeAnim = pickFirst({
+                        rendering::anim::SPELL_CAST_DIRECTED,
+                        rendering::anim::SPELL_CAST_OMNI,
+                        rendering::anim::SPELL_CAST,
+                        rendering::anim::SPELL
+                    });
+                } else {
+                    // OMNI (self-buff, Arcane Explosion): SPELL_CAST_OMNI → SPELL_CAST_AREA
+                    finalizeAnim = pickFirst({
+                        rendering::anim::SPELL_CAST_OMNI,
+                        rendering::anim::SPELL_CAST_AREA,
+                        rendering::anim::SPELL_CAST,
+                        rendering::anim::SPELL
+                    });
+                }
+            }
+
+            if (isLocalPlayer) {
+                auto* ac = renderer_.getAnimationController();
+                if (ac) ac->startSpellCast(precastAnim, castAnim, true, finalizeAnim);
+            } else {
+                cr->playAnimation(instanceId, castAnim, true);
+            }
+            } // end !isFishing
+        } else {
+            // Cast/channel ended — plays finalization anim completely then returns to idle
+            if (isLocalPlayer) {
+                auto* ac = renderer_.getAnimationController();
+                if (ac) ac->stopSpellCast();
+            } else if (isChannel) {
+                cr->playAnimation(instanceId, rendering::anim::STAND, true);
+            }
+        }
+    });
+
+    // Ghost state callback — make player semi-transparent when in spirit form
+    gameHandler_.setGhostStateCallback([this](bool isGhost) {
+        auto* cr = renderer_.getCharacterRenderer();
+        if (!cr) return;
+        uint32_t charInstId = renderer_.getCharacterInstanceId();
+        if (charInstId == 0) return;
+        cr->setInstanceOpacity(charInstId, isGhost ? 0.5f : 1.0f);
+    });
+
+    // Stand state animation callback — route through AnimationController state machine
+    // for proper sit/sleep/kneel transition animations (down → loop → up)
+    gameHandler_.setStandStateCallback([this](uint8_t standState) {
+        using AC = rendering::AnimationController;
+
+        // Sync camera controller sitting flag: block movement while sitting/kneeling
+        if (auto* cc = renderer_.getCameraController()) {
+            cc->setSitting(standState >= AC::STAND_STATE_SIT &&
+                           standState <= AC::STAND_STATE_KNEEL &&
+                           standState != AC::STAND_STATE_DEAD);
+        }
+
+        auto* ac = renderer_.getAnimationController();
+        if (!ac) return;
+
+        // Death is special — play directly, not through sit state machine
+        if (standState == AC::STAND_STATE_DEAD) {
+            auto* cr = renderer_.getCharacterRenderer();
+            if (!cr) return;
+            uint32_t charInstId = renderer_.getCharacterInstanceId();
+            if (charInstId == 0) return;
+            cr->playAnimation(charInstId, rendering::anim::DEATH, false);
+            return;
+        }
+
+        ac->setStandState(standState);
+    });
+
+    // Loot window callback — play kneel/loot animation while looting
+    gameHandler_.setLootWindowCallback([this](bool open) {
+        auto* ac = renderer_.getAnimationController();
+        if (!ac) return;
+        if (open) ac->startLooting();
+        else      ac->stopLooting();
+    });
+}
+
+}} // namespace wowee::core

src/core/audio_callback_handler.cpp

@@ -0,0 +1,132 @@
+#include "core/audio_callback_handler.hpp"
+#include "core/coordinates.hpp"
+#include "core/logger.hpp"
+#include "rendering/renderer.hpp"
+#include "pipeline/dbc_loader.hpp"
+#include "game/game_handler.hpp"
+#include "audio/audio_coordinator.hpp"
+#include "audio/music_manager.hpp"
+#include "audio/audio_engine.hpp"
+#include "ui/ui_manager.hpp"
+
+namespace wowee { namespace core {
+
+AudioCallbackHandler::AudioCallbackHandler(
+    pipeline::AssetManager& assetManager,
+    audio::AudioCoordinator* audioCoordinator,
+    rendering::Renderer* renderer,
+    ui::UIManager* uiManager,
+    game::GameHandler& gameHandler)
+    : assetManager_(assetManager)
+    , audioCoordinator_(audioCoordinator)
+    , renderer_(renderer)
+    , uiManager_(uiManager)
+    , gameHandler_(gameHandler)
+{
+}
+
+std::optional<std::string> AudioCallbackHandler::resolveSoundEntryPath(uint32_t soundId) const {
+    auto dbc = assetManager_.loadDBC("SoundEntries.dbc");
+    if (!dbc || !dbc->isLoaded()) return std::nullopt;
+
+    int32_t idx = dbc->findRecordById(soundId);
+    if (idx < 0) return std::nullopt;
+
+    // SoundEntries.dbc (WotLK): field 2 = Name (label), fields 3-12 = File[0..9], field 23 = DirectoryBase
+    const uint32_t row = static_cast<uint32_t>(idx);
+    std::string dir = dbc->getString(row, 23);
+    for (uint32_t f = 3; f <= 12; ++f) {
+        std::string name = dbc->getString(row, f);
+        if (name.empty()) continue;
+        return dir.empty() ? name : dir + "\\" + name;
+    }
+    return std::nullopt;
+}
+
+void AudioCallbackHandler::setupCallbacks() {
+    // Level-up callback — play sound, cheer emote, and trigger UI ding overlay + 3D effect
+    gameHandler_.setLevelUpCallback([this](uint32_t newLevel) {
+        if (uiManager_) {
+            uiManager_->getGameScreen().toastManager().triggerDing(newLevel);
+        }
+        if (renderer_) {
+            renderer_->triggerLevelUpEffect(renderer_->getCharacterPosition());
+        }
+    });
+
+    // Achievement earned callback — show toast banner
+    gameHandler_.setAchievementEarnedCallback([this](uint32_t achievementId, const std::string& name) {
+        if (uiManager_) {
+            uiManager_->getGameScreen().toastManager().triggerAchievementToast(achievementId, name);
+        }
+    });
+
+    // Server-triggered music callback (SMSG_PLAY_MUSIC)
+    // Resolves soundId → SoundEntries.dbc → MPQ path → MusicManager.
+    gameHandler_.setPlayMusicCallback([this](uint32_t soundId) {
+        if (!renderer_) return;
+        auto* music = audioCoordinator_ ? audioCoordinator_->getMusicManager() : nullptr;
+        if (!music) return;
+
+        auto path = resolveSoundEntryPath(soundId);
+        if (path) {
+            music->playMusic(*path, /*loop=*/false);
+        }
+    });
+
+    // SMSG_PLAY_SOUND: look up SoundEntries.dbc and play 2-D sound effect
+    gameHandler_.setPlaySoundCallback([this](uint32_t soundId) {
+        auto path = resolveSoundEntryPath(soundId);
+        if (path) {
+            audio::AudioEngine::instance().playSound2D(*path);
+        }
+    });
+
+    // SMSG_PLAY_OBJECT_SOUND / SMSG_PLAY_SPELL_IMPACT: play as 3D positional sound at source entity
+    gameHandler_.setPlayPositionalSoundCallback([this](uint32_t soundId, uint64_t sourceGuid) {
+        auto path = resolveSoundEntryPath(soundId);
+        if (!path) return;
+
+        // Play as 3D sound if source entity position is available.
+        // Entity stores canonical coords; listener uses render coords (camera).
+        auto entity = gameHandler_.getEntityManager().getEntity(sourceGuid);
+        if (entity) {
+            glm::vec3 canonical{entity->getLatestX(), entity->getLatestY(), entity->getLatestZ()};
+            glm::vec3 pos = core::coords::canonicalToRender(canonical);
+            audio::AudioEngine::instance().playSound3D(*path, pos);
+        } else {
+            audio::AudioEngine::instance().playSound2D(*path);
+        }
+    });
+
+    // Other player level-up callback — trigger 3D effect + chat notification
+    gameHandler_.setOtherPlayerLevelUpCallback([this](uint64_t guid, uint32_t newLevel) {
+        if (!renderer_) return;
+
+        // Trigger 3D effect at the other player's position
+        auto entity = gameHandler_.getEntityManager().getEntity(guid);
+        if (entity) {
+            glm::vec3 canonical(entity->getX(), entity->getY(), entity->getZ());
+            glm::vec3 renderPos = core::coords::canonicalToRender(canonical);
+            renderer_->triggerLevelUpEffect(renderPos);
+        }
+
+        // Show chat message if in group
+        if (gameHandler_.isInGroup()) {
+            std::string name = gameHandler_.getCachedPlayerName(guid);
+            if (name.empty()) name = "A party member";
+            game::MessageChatData msg;
+            msg.type = game::ChatType::SYSTEM;
+            msg.language = game::ChatLanguage::UNIVERSAL;
+            msg.message = name + " has reached level " + std::to_string(newLevel) + "!";
+            gameHandler_.addLocalChatMessage(msg);
+        }
+    });
+
+    // Open dungeon finder callback — server sends SMSG_OPEN_LFG_DUNGEON_FINDER
+    gameHandler_.setOpenLfgCallback([this]() {
+        if (uiManager_) uiManager_->getGameScreen().openDungeonFinder();
+    });
+}
+
+}} // namespace wowee::core

src/core/entity_spawn_callback_handler.cpp

@@ -0,0 +1,191 @@
+#include "core/entity_spawn_callback_handler.hpp"
+#include "core/entity_spawner.hpp"
+#include "core/coordinates.hpp"
+#include "core/logger.hpp"
+#include "rendering/renderer.hpp"
+#include "rendering/character_renderer.hpp"
+#include "rendering/m2_renderer.hpp"
+#include "rendering/wmo_renderer.hpp"
+#include "rendering/animation/animation_ids.hpp"
+#include "game/game_handler.hpp"
+
+namespace wowee { namespace core {
+
+EntitySpawnCallbackHandler::EntitySpawnCallbackHandler(
+    EntitySpawner& entitySpawner,
+    rendering::Renderer& renderer,
+    game::GameHandler& gameHandler,
+    std::function<bool(uint64_t)> isLocalPlayerGuid)
+    : entitySpawner_(entitySpawner)
+    , renderer_(renderer)
+    , gameHandler_(gameHandler)
+    , isLocalPlayerGuid_(std::move(isLocalPlayerGuid))
+{
+}
+
+void EntitySpawnCallbackHandler::setupCallbacks() {
+    // Creature spawn callback (online mode) - spawn creature models
+    gameHandler_.setCreatureSpawnCallback([this](uint64_t guid, uint32_t displayId, float x, float y, float z, float orientation, float scale) {
+        // Queue spawns to avoid hanging when many creatures appear at once.
+        // Deduplicate so repeated updates don't flood pending queue.
+        if (entitySpawner_.isCreatureSpawned(guid)) return;
+        if (entitySpawner_.isCreaturePending(guid)) return;
+        entitySpawner_.queueCreatureSpawn(guid, displayId, x, y, z, orientation, scale);
+    });
+
+    // Player spawn callback (online mode) - spawn player models with correct textures
+    gameHandler_.setPlayerSpawnCallback([this](uint64_t guid,
+                                              uint32_t /*displayId*/,
+                                              uint8_t raceId,
+                                              uint8_t genderId,
+                                              uint32_t appearanceBytes,
+                                              uint8_t facialFeatures,
+                                              float x, float y, float z, float orientation) {
+        LOG_WARNING("playerSpawnCallback: guid=0x", std::hex, guid, std::dec,
+                    " race=", static_cast<int>(raceId), " gender=", static_cast<int>(genderId),
+                    " pos=(", x, ",", y, ",", z, ")");
+        // Skip local player — already spawned as the main character
+        if (isLocalPlayerGuid_(guid)) return;
+        if (entitySpawner_.isPlayerSpawned(guid)) return;
+        if (entitySpawner_.isPlayerPending(guid)) return;
+        entitySpawner_.queuePlayerSpawn(guid, raceId, genderId, appearanceBytes, facialFeatures, x, y, z, orientation);
+    });
+
+    // Online player equipment callback - apply armor geosets/skin overlays per player instance.
+    gameHandler_.setPlayerEquipmentCallback([this](uint64_t guid,
+                                                  const std::array<uint32_t, 19>& displayInfoIds,
+                                                  const std::array<uint8_t, 19>& inventoryTypes) {
+        // Queue equipment compositing instead of doing it immediately —
+        // compositeWithRegions is expensive (file I/O + CPU blit + GPU upload)
+        // and causes frame stutters if multiple players update at once.
+        entitySpawner_.queuePlayerEquipment(guid, displayInfoIds, inventoryTypes);
+    });
+
+    // Creature despawn callback (online mode) - remove creature models
+    gameHandler_.setCreatureDespawnCallback([this](uint64_t guid) {
+        entitySpawner_.despawnCreature(guid);
+    });
+
+    gameHandler_.setPlayerDespawnCallback([this](uint64_t guid) {
+        entitySpawner_.despawnPlayer(guid);
+    });
+
+    // GameObject spawn callback (online mode) - spawn static models (mailboxes, etc.)
+    gameHandler_.setGameObjectSpawnCallback([this](uint64_t guid, uint32_t entry, uint32_t displayId, float x, float y, float z, float orientation, float scale) {
+        entitySpawner_.queueGameObjectSpawn(guid, entry, displayId, x, y, z, orientation, scale);
+    });
+
+    // GameObject despawn callback (online mode) - remove static models
+    gameHandler_.setGameObjectDespawnCallback([this](uint64_t guid) {
+        entitySpawner_.despawnGameObject(guid);
+    });
+
+    // GameObject custom animation callback (e.g. chest opening)
+    gameHandler_.setGameObjectCustomAnimCallback([this](uint64_t guid, uint32_t animId) {
+        auto& goInstances = entitySpawner_.getGameObjectInstances();
+        auto it = goInstances.find(guid);
+        if (it == goInstances.end()) return;
+        auto& info = it->second;
+        if (!info.isWmo) {
+            if (auto* m2r = renderer_.getM2Renderer()) {
+                // Play the custom animation as a one-shot if model supports it
+                if (m2r->hasAnimation(info.instanceId, animId))
+                    m2r->setInstanceAnimation(info.instanceId, animId, false);
+                else
+                    m2r->setInstanceAnimationFrozen(info.instanceId, false);
+            }
+        }
+    });
+
+    // GameObject state change callback — animate doors/chests opening/closing/destroying
+    gameHandler_.setGameObjectStateCallback([this](uint64_t guid, uint8_t goState) {
+        auto& goInstances = entitySpawner_.getGameObjectInstances();
+        auto it = goInstances.find(guid);
+        if (it == goInstances.end()) return;
+        auto& info = it->second;
+        if (info.isWmo) return; // WMOs don't have M2 animation sequences
+        auto* m2r = renderer_.getM2Renderer();
+        if (!m2r) return;
+        uint32_t instId = info.instanceId;
+        // GO states: 0=READY(closed), 1=OPEN, 2=DESTROYED/ACTIVE
+        if (goState == 1) {
+            // Opening: play OPEN(148) one-shot, fall back to unfreezing
+            if (m2r->hasAnimation(instId, 148))
+                m2r->setInstanceAnimation(instId, 148, false);
+            else
+                m2r->setInstanceAnimationFrozen(instId, false);
+        } else if (goState == 2) {
+            // Destroyed: play DESTROY(149) one-shot
+            if (m2r->hasAnimation(instId, 149))
+                m2r->setInstanceAnimation(instId, 149, false);
+        } else {
+            // Closed: play CLOSE(146) one-shot, else freeze
+            if (m2r->hasAnimation(instId, 146))
+                m2r->setInstanceAnimation(instId, 146, false);
+            else
+                m2r->setInstanceAnimationFrozen(instId, true);
+        }
+    });
+
+    // Creature move callback (online mode) - update creature positions
+    gameHandler_.setCreatureMoveCallback([this](uint64_t guid, float x, float y, float z, uint32_t durationMs) {
+        if (!renderer_.getCharacterRenderer()) return;
+        uint32_t instanceId = 0;
+        bool isPlayer = false;
+        instanceId = entitySpawner_.getPlayerInstanceId(guid);
+        if (instanceId != 0) { isPlayer = true; }
+        else {
+            instanceId = entitySpawner_.getCreatureInstanceId(guid);
+        }
+        if (instanceId != 0) {
+            glm::vec3 renderPos = core::coords::canonicalToRender(glm::vec3(x, y, z));
+            float durationSec = static_cast<float>(durationMs) / 1000.0f;
+            renderer_.getCharacterRenderer()->moveInstanceTo(instanceId, renderPos, durationSec);
+            // Play Run animation (anim 5) for the duration of the spline move.
+            // WoW M2 animation IDs: 4=Walk, 5=Run.
+            // Don't override Death animation (1). The per-frame sync loop will return to
+            // Stand when movement stops.
+            if (durationMs > 0) {
+                // Player animation is managed by the local renderer state machine —
+                // don't reset it here or every server movement packet restarts the
+                // run cycle from frame 0, causing visible stutter.
+                if (!isPlayer) {
+                    uint32_t curAnimId = 0; float curT = 0.0f, curDur = 0.0f;
+                    auto* cr = renderer_.getCharacterRenderer();
+                    bool gotState = cr->getAnimationState(instanceId, curAnimId, curT, curDur);
+                    // Only start Run if not already running and not in Death animation.
+                    if (!gotState || (curAnimId != rendering::anim::DEATH && curAnimId != rendering::anim::RUN)) {
+                        cr->playAnimation(instanceId, rendering::anim::RUN, /*loop=*/true);
+                    }
+                    entitySpawner_.getCreatureWasMoving()[guid] = true;
+                }
+            }
+        }
+    });
+
+    gameHandler_.setGameObjectMoveCallback([this](uint64_t guid, float x, float y, float z, float orientation) {
+        auto& goInstMap = entitySpawner_.getGameObjectInstances();
+        auto it = goInstMap.find(guid);
+        if (it == goInstMap.end()) {
+            return;
+        }
+        glm::vec3 renderPos = core::coords::canonicalToRender(glm::vec3(x, y, z));
+        auto& info = it->second;
+        if (info.isWmo) {
+            if (auto* wr = renderer_.getWMORenderer()) {
+                glm::mat4 transform(1.0f);
+                transform = glm::translate(transform, renderPos);
+                transform = glm::rotate(transform, orientation, glm::vec3(0, 0, 1));
+                wr->setInstanceTransform(info.instanceId, transform);
+            }
+        } else {
+            if (auto* mr = renderer_.getM2Renderer()) {
+                glm::mat4 transform(1.0f);
+                transform = glm::translate(transform, renderPos);
+                mr->setInstanceTransform(info.instanceId, transform);
+            }
+        }
+    });
+}
+
+}} // namespace wowee::core

src/core/npc_interaction_callback_handler.cpp

@@ -0,0 +1,84 @@
+#include "core/npc_interaction_callback_handler.hpp"
+#include "core/entity_spawner.hpp"
+#include "core/coordinates.hpp"
+#include "core/logger.hpp"
+#include "rendering/renderer.hpp"
+#include "rendering/character_renderer.hpp"
+#include "rendering/animation/animation_ids.hpp"
+#include "game/game_handler.hpp"
+#include "audio/audio_coordinator.hpp"
+#include "audio/npc_voice_manager.hpp"
+
+namespace wowee { namespace core {
+
+NPCInteractionCallbackHandler::NPCInteractionCallbackHandler(
+    EntitySpawner& entitySpawner,
+    rendering::Renderer* renderer,
+    game::GameHandler& gameHandler,
+    audio::AudioCoordinator* audioCoordinator)
+    : entitySpawner_(entitySpawner)
+    , renderer_(renderer)
+    , gameHandler_(gameHandler)
+    , audioCoordinator_(audioCoordinator)
+{
+}
+
+audio::VoiceType NPCInteractionCallbackHandler::resolveNpcVoiceType(uint64_t guid) const {
+    audio::VoiceType voiceType = audio::VoiceType::GENERIC;
+    auto entity = gameHandler_.getEntityManager().getEntity(guid);
+    if (entity && entity->getType() == game::ObjectType::UNIT) {
+        auto unit = std::static_pointer_cast<game::Unit>(entity);
+        uint32_t displayId = unit->getDisplayId();
+        voiceType = entitySpawner_.detectVoiceTypeFromDisplayId(displayId);
+    }
+    return voiceType;
+}
+
+void NPCInteractionCallbackHandler::setupCallbacks() {
+    // NPC greeting callback - play voice line
+    gameHandler_.setNpcGreetingCallback([this](uint64_t guid, const glm::vec3& position) {
+        // Play NPC_WELCOME animation on the NPC
+        if (renderer_) {
+            auto* cr = renderer_->getCharacterRenderer();
+            if (cr) {
+                uint32_t instanceId = entitySpawner_.getCreatureInstanceId(guid);
+                if (instanceId != 0) cr->playAnimation(instanceId, rendering::anim::NPC_WELCOME, false);
+            }
+        }
+        if (audioCoordinator_ && audioCoordinator_->getNpcVoiceManager()) {
+            // Convert canonical to render coords for 3D audio
+            glm::vec3 renderPos = core::coords::canonicalToRender(position);
+            audio::VoiceType voiceType = resolveNpcVoiceType(guid);
+            audioCoordinator_->getNpcVoiceManager()->playGreeting(guid, voiceType, renderPos);
+        }
+    });
+
+    // NPC farewell callback - play farewell voice line
+    gameHandler_.setNpcFarewellCallback([this](uint64_t guid, const glm::vec3& position) {
+        if (audioCoordinator_ && audioCoordinator_->getNpcVoiceManager()) {
+            glm::vec3 renderPos = core::coords::canonicalToRender(position);
+            audio::VoiceType voiceType = resolveNpcVoiceType(guid);
+            audioCoordinator_->getNpcVoiceManager()->playFarewell(guid, voiceType, renderPos);
+        }
+    });
+
+    // NPC vendor callback - play vendor voice line
+    gameHandler_.setNpcVendorCallback([this](uint64_t guid, const glm::vec3& position) {
+        if (audioCoordinator_ && audioCoordinator_->getNpcVoiceManager()) {
+            glm::vec3 renderPos = core::coords::canonicalToRender(position);
+            audio::VoiceType voiceType = resolveNpcVoiceType(guid);
+            audioCoordinator_->getNpcVoiceManager()->playVendor(guid, voiceType, renderPos);
+        }
+    });
+
+    // NPC aggro callback - play combat start voice line
+    gameHandler_.setNpcAggroCallback([this](uint64_t guid, const glm::vec3& position) {
+        if (audioCoordinator_ && audioCoordinator_->getNpcVoiceManager()) {
+            glm::vec3 renderPos = core::coords::canonicalToRender(position);
+            audio::VoiceType voiceType = resolveNpcVoiceType(guid);
+            audioCoordinator_->getNpcVoiceManager()->playAggro(guid, voiceType, renderPos);
+        }
+    });
+}
+
+}} // namespace wowee::core

src/core/transport_callback_handler.cpp

@@ -0,0 +1,275 @@
+#include "core/transport_callback_handler.hpp"
+#include "core/entity_spawner.hpp"
+#include "core/world_loader.hpp"
+#include "core/coordinates.hpp"
+#include "core/logger.hpp"
+#include "rendering/renderer.hpp"
+#include "rendering/character_renderer.hpp"
+#include "rendering/camera_controller.hpp"
+#include "rendering/terrain_manager.hpp"
+#include "rendering/m2_renderer.hpp"
+#include "game/game_handler.hpp"
+#include "game/transport_manager.hpp"
+
+#include <set>
+
+namespace wowee { namespace core {
+
+TransportCallbackHandler::TransportCallbackHandler(
+    EntitySpawner& entitySpawner,
+    rendering::Renderer& renderer,
+    game::GameHandler& gameHandler,
+    WorldLoader* worldLoader)
+    : entitySpawner_(entitySpawner)
+    , renderer_(renderer)
+    , gameHandler_(gameHandler)
+    , worldLoader_(worldLoader)
+{
+}
+
+void TransportCallbackHandler::setupCallbacks() {
+    // Mount callback (online mode) - defer heavy model load to next frame
+    gameHandler_.setMountCallback([this](uint32_t mountDisplayId) {
+        if (mountDisplayId == 0) {
+            // Dismount is instant (no loading needed)
+            if (renderer_.getCharacterRenderer() && entitySpawner_.getMountInstanceId() != 0) {
+                renderer_.getCharacterRenderer()->removeInstance(entitySpawner_.getMountInstanceId());
+                entitySpawner_.clearMountState();
+            }
+            entitySpawner_.setMountDisplayId(0);
+            renderer_.clearMount();
+            LOG_INFO("Dismounted");
+            return;
+        }
+        // Queue the mount for processing in the next update() frame
+        entitySpawner_.setMountDisplayId(mountDisplayId);
+    });
+
+    // Taxi precache callback - preload terrain tiles along flight path
+    gameHandler_.setTaxiPrecacheCallback([this](const std::vector<glm::vec3>& path) {
+        if (!renderer_.getTerrainManager()) return;
+
+        std::set<std::pair<int, int>> uniqueTiles;
+
+        // Sample waypoints along path and gather tiles.
+        // Denser sampling + neighbor coverage reduces in-flight stream spikes.
+        const size_t stride = 2;
+        for (size_t i = 0; i < path.size(); i += stride) {
+            const auto& waypoint = path[i];
+            glm::vec3 renderPos = core::coords::canonicalToRender(waypoint);
+            int tileX = static_cast<int>(32 - (renderPos.x / 533.33333f));
+            int tileY = static_cast<int>(32 - (renderPos.y / 533.33333f));
+
+            if (tileX >= 0 && tileX <= 63 && tileY >= 0 && tileY <= 63) {
+                for (int dx = -1; dx <= 1; ++dx) {
+                    for (int dy = -1; dy <= 1; ++dy) {
+                        int nx = tileX + dx;
+                        int ny = tileY + dy;
+                        if (nx >= 0 && nx <= 63 && ny >= 0 && ny <= 63) {
+                            uniqueTiles.insert({nx, ny});
+                        }
+                    }
+                }
+            }
+        }
+        // Ensure final destination tile is included.
+        if (!path.empty()) {
+            glm::vec3 renderPos = core::coords::canonicalToRender(path.back());
+            int tileX = static_cast<int>(32 - (renderPos.x / 533.33333f));
+            int tileY = static_cast<int>(32 - (renderPos.y / 533.33333f));
+            if (tileX >= 0 && tileX <= 63 && tileY >= 0 && tileY <= 63) {
+                for (int dx = -1; dx <= 1; ++dx) {
+                    for (int dy = -1; dy <= 1; ++dy) {
+                        int nx = tileX + dx;
+                        int ny = tileY + dy;
+                        if (nx >= 0 && nx <= 63 && ny >= 0 && ny <= 63) {
+                            uniqueTiles.insert({nx, ny});
+                        }
+                    }
+                }
+            }
+        }
+
+        std::vector<std::pair<int, int>> tilesToLoad(uniqueTiles.begin(), uniqueTiles.end());
+        if (tilesToLoad.size() > 512) {
+            tilesToLoad.resize(512);
+        }
+        LOG_INFO("Precaching ", tilesToLoad.size(), " tiles for taxi route");
+        renderer_.getTerrainManager()->precacheTiles(tilesToLoad);
+    });
+
+    // Taxi orientation callback - update mount rotation during flight
+    gameHandler_.setTaxiOrientationCallback([this](float yaw, float pitch, float roll) {
+        if (renderer_.getCameraController()) {
+            // Taxi callback now provides render-space yaw directly.
+            float yawDegrees = glm::degrees(yaw);
+            renderer_.getCameraController()->setFacingYaw(yawDegrees);
+            renderer_.setCharacterYaw(yawDegrees);
+            // Set mount pitch and roll for realistic flight animation
+            renderer_.setMountPitchRoll(pitch, roll);
+        }
+    });
+
+    // Taxi flight start callback - keep non-blocking to avoid hitching at takeoff.
+    gameHandler_.setTaxiFlightStartCallback([this]() {
+        if (renderer_.getTerrainManager() && renderer_.getM2Renderer()) {
+            LOG_INFO("Taxi flight start: incremental terrain/M2 streaming active");
+            uint32_t m2Count = renderer_.getM2Renderer()->getModelCount();
+            uint32_t instCount = renderer_.getM2Renderer()->getInstanceCount();
+            LOG_INFO("Current M2 VRAM state: ", m2Count, " models (", instCount, " instances)");
+        }
+    });
+
+    // Transport spawn callback (online mode) - register transports with TransportManager
+    gameHandler_.setTransportSpawnCallback([this](uint64_t guid, uint32_t entry, uint32_t displayId, float x, float y, float z, float orientation) {
+        // Get the GameObject instance now so late queue processing can rely on stable IDs.
+        auto& goInstances2 = entitySpawner_.getGameObjectInstances();
+        auto it = goInstances2.find(guid);
+        if (it == goInstances2.end()) {
+            LOG_WARNING("Transport spawn callback: GameObject instance not found for GUID 0x", std::hex, guid, std::dec);
+            return;
+        }
+
+        auto pendingIt = entitySpawner_.hasTransportRegistrationPending(guid);
+        if (pendingIt) {
+            entitySpawner_.updateTransportRegistration(guid, displayId, x, y, z, orientation);
+        } else {
+            entitySpawner_.queueTransportRegistration(guid, entry, displayId, x, y, z, orientation);
+        }
+    });
+
+    // Transport move callback (online mode) - update transport gameobject positions
+    gameHandler_.setTransportMoveCallback([this](uint64_t guid, float x, float y, float z, float orientation) {
+        LOG_DEBUG("Transport move callback: GUID=0x", std::hex, guid, std::dec,
+                 " pos=(", x, ", ", y, ", ", z, ") orientation=", orientation);
+
+        auto* transportManager = gameHandler_.getTransportManager();
+        if (!transportManager) {
+            LOG_WARNING("Transport move callback: TransportManager is null!");
+            return;
+        }
+
+        if (entitySpawner_.hasTransportRegistrationPending(guid)) {
+            entitySpawner_.setTransportPendingMove(guid, x, y, z, orientation);
+            LOG_DEBUG("Queued transport move for pending registration GUID=0x", std::hex, guid, std::dec);
+            return;
+        }
+
+        // Check if transport exists - if not, treat this as a late spawn (reconnection/server restart)
+        if (!transportManager->getTransport(guid)) {
+            LOG_DEBUG("Received position update for unregistered transport 0x", std::hex, guid, std::dec,
+                     " - auto-spawning from position update");
+
+            // Get transport info from entity manager
+            auto entity = gameHandler_.getEntityManager().getEntity(guid);
+            if (entity && entity->getType() == game::ObjectType::GAMEOBJECT) {
+                auto go = std::static_pointer_cast<game::GameObject>(entity);
+                uint32_t entry = go->getEntry();
+                uint32_t displayId = go->getDisplayId();
+
+                // Find the WMO instance for this transport (should exist from earlier GameObject spawn)
+                auto& goInstances3 = entitySpawner_.getGameObjectInstances();
+                auto it = goInstances3.find(guid);
+                if (it != goInstances3.end()) {
+                    uint32_t wmoInstanceId = it->second.instanceId;
+
+                    // TransportAnimation.dbc is indexed by GameObject entry
+                    uint32_t pathId = entry;
+                    const bool preferServerData = gameHandler_.hasServerTransportUpdate(guid);
+
+                    // Coordinates are already canonical (converted in game_handler.cpp)
+                    glm::vec3 canonicalSpawnPos(x, y, z);
+
+                    // Check if we have a real usable path, otherwise remap/infer/fall back to stationary.
+                    const bool shipOrZeppelinDisplay =
+                        (displayId == 3015 || displayId == 3031 || displayId == 7546 ||
+                         displayId == 7446 || displayId == 1587 || displayId == 2454 ||
+                         displayId == 807 || displayId == 808);
+                    bool hasUsablePath = transportManager->hasPathForEntry(entry);
+                    if (shipOrZeppelinDisplay) {
+                        hasUsablePath = transportManager->hasUsableMovingPathForEntry(entry, 25.0f);
+                    }
+
+                    if (preferServerData) {
+                        // Strict server-authoritative mode: no inferred/remapped fallback routes.
+                        if (!hasUsablePath) {
+                            std::vector<glm::vec3> path = { canonicalSpawnPos };
+                            transportManager->loadPathFromNodes(pathId, path, false, 0.0f);
+                            LOG_INFO("Auto-spawned transport in strict server-first mode (stationary fallback): entry=", entry,
+                                     " displayId=", displayId, " wmoInstance=", wmoInstanceId);
+                        } else {
+                            LOG_INFO("Auto-spawned transport in server-first mode with entry DBC path: entry=", entry,
+                                     " displayId=", displayId, " wmoInstance=", wmoInstanceId);
+                        }
+                    } else if (!hasUsablePath) {
+                        bool allowZOnly = (displayId == 455 || displayId == 462);
+                        uint32_t inferredPath = transportManager->inferDbcPathForSpawn(
+                            canonicalSpawnPos, 1200.0f, allowZOnly);
+                        if (inferredPath != 0) {
+                            pathId = inferredPath;
+                            LOG_INFO("Auto-spawned transport with inferred path: entry=", entry,
+                                     " inferredPath=", pathId, " displayId=", displayId,
+                                     " wmoInstance=", wmoInstanceId);
+                        } else {
+                            uint32_t remappedPath = transportManager->pickFallbackMovingPath(entry, displayId);
+                            if (remappedPath != 0) {
+                                pathId = remappedPath;
+                                LOG_INFO("Auto-spawned transport with remapped fallback path: entry=", entry,
+                                         " remappedPath=", pathId, " displayId=", displayId,
+                                         " wmoInstance=", wmoInstanceId);
+                            } else {
+                                std::vector<glm::vec3> path = { canonicalSpawnPos };
+                                transportManager->loadPathFromNodes(pathId, path, false, 0.0f);
+                                LOG_INFO("Auto-spawned transport with stationary path: entry=", entry,
+                                         " displayId=", displayId, " wmoInstance=", wmoInstanceId);
+                            }
+                        }
+                    } else {
+                        LOG_INFO("Auto-spawned transport with real path: entry=", entry,
+                                 " displayId=", displayId, " wmoInstance=", wmoInstanceId);
+                    }
+
+                    transportManager->registerTransport(guid, wmoInstanceId, pathId, canonicalSpawnPos, entry);
+                    // Keep type in sync with the spawned instance; needed for M2 lift boarding/motion.
+                    if (!it->second.isWmo) {
+                        if (auto* tr = transportManager->getTransport(guid)) {
+                            tr->isM2 = true;
+                        }
+                    }
+                } else {
+                    entitySpawner_.setTransportPendingMove(guid, x, y, z, orientation);
+                    LOG_DEBUG("Cannot auto-spawn transport 0x", std::hex, guid, std::dec,
+                              " - WMO instance not found yet (queued move for replay)");
+                    return;
+                }
+            } else {
+                entitySpawner_.setTransportPendingMove(guid, x, y, z, orientation);
+                LOG_DEBUG("Cannot auto-spawn transport 0x", std::hex, guid, std::dec,
+                          " - entity not found in EntityManager (queued move for replay)");
+                return;
+            }
+        }
+
+        // Update TransportManager's internal state (position, rotation, transform matrices)
+        // This also updates the WMO renderer automatically
+        // Coordinates are already canonical (converted in game_handler.cpp when entity was created)
+        glm::vec3 canonicalPos(x, y, z);
+        transportManager->updateServerTransport(guid, canonicalPos, orientation);
+
+        // Move player with transport if riding it
+        if (gameHandler_.isOnTransport() && gameHandler_.getPlayerTransportGuid() == guid) {
+            auto* cc = renderer_.getCameraController();
+            if (cc) {
+                glm::vec3* ft = cc->getFollowTargetMutable();
+                if (ft) {
+                    // Get player world position from TransportManager (handles transform properly)
+                    glm::vec3 offset = gameHandler_.getPlayerTransportOffset();
+                    glm::vec3 worldPos = transportManager->getPlayerWorldPosition(guid, offset);
+                    *ft = worldPos;
+                }
+            }
+        }
+    });
+}
+
+}} // namespace wowee::core

src/core/ui_screen_callback_handler.cpp

@@ -0,0 +1,182 @@
+#include "core/ui_screen_callback_handler.hpp"
+#include "core/application.hpp"  // AppState
+#include "core/logger.hpp"
+#include "ui/ui_manager.hpp"
+#include "auth/auth_handler.hpp"
+#include "game/game_handler.hpp"
+#include "game/expansion_profile.hpp"
+#include "game/world_packets.hpp"
+#include "pipeline/asset_manager.hpp"
+
+namespace wowee { namespace core {
+
+UIScreenCallbackHandler::UIScreenCallbackHandler(
+    ui::UIManager& uiManager,
+    game::GameHandler& gameHandler,
+    auth::AuthHandler& authHandler,
+    game::ExpansionRegistry* expansionRegistry,
+    pipeline::AssetManager* assetManager,
+    SetStateFn setState)
+    : uiManager_(uiManager)
+    , gameHandler_(gameHandler)
+    , authHandler_(authHandler)
+    , expansionRegistry_(expansionRegistry)
+    , assetManager_(assetManager)
+    , setState_(std::move(setState))
+{
+}
+
+void UIScreenCallbackHandler::setupCallbacks() {
+    // Authentication screen callback
+    uiManager_.getAuthScreen().setOnSuccess([this]() {
+        LOG_INFO("Authentication successful, transitioning to realm selection");
+        setState_(AppState::REALM_SELECTION);
+    });
+
+    // Realm selection callback
+    uiManager_.getRealmScreen().setOnRealmSelected([this](const std::string& realmName, const std::string& realmAddress) {
+        LOG_INFO("Realm selected: ", realmName, " (", realmAddress, ")");
+
+        // Parse realm address (format: "hostname:port")
+        std::string host = realmAddress;
+        uint16_t port = 8085;  // Default world server port
+
+        size_t colonPos = realmAddress.find(':');
+        if (colonPos != std::string::npos) {
+            host = realmAddress.substr(0, colonPos);
+            try { port = static_cast<uint16_t>(std::stoi(realmAddress.substr(colonPos + 1))); }
+            catch (...) { LOG_WARNING("Invalid port in realm address: ", realmAddress); }
+        }
+
+        // Connect to world server
+        const auto& sessionKey = authHandler_.getSessionKey();
+        std::string accountName = authHandler_.getUsername();
+        if (accountName.empty()) {
+            LOG_WARNING("Auth username missing; falling back to TESTACCOUNT");
+            accountName = "TESTACCOUNT";
+        }
+
+        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, " realmBuild=", realmBuild);
+        }
+
+        uint32_t clientBuild = 12340; // default WotLK
+        if (expansionRegistry_) {
+            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);
+        } else {
+            LOG_ERROR("Failed to connect to world server");
+        }
+    });
+
+    // Realm screen back button - return to login
+    uiManager_.getRealmScreen().setOnBack([this]() {
+        authHandler_.disconnect();
+        uiManager_.getRealmScreen().reset();
+        setState_(AppState::AUTHENTICATION);
+    });
+
+    // Character selection callback
+    uiManager_.getCharacterScreen().setOnCharacterSelected([this](uint64_t characterGuid) {
+        LOG_INFO("Character selected: GUID=0x", std::hex, characterGuid, std::dec);
+        // Always set the active character GUID
+        gameHandler_.setActiveCharacterGuid(characterGuid);
+        // Keep CHARACTER_SELECTION active until world entry is fully loaded.
+        // This avoids exposing pre-load hitching before the loading screen/intro.
+    });
+
+    // Character create screen callbacks
+    uiManager_.getCharacterCreateScreen().setOnCreate([this](const game::CharCreateData& data) {
+        pendingCreatedCharacterName_ = data.name;  // Store name for auto-selection
+        gameHandler_.createCharacter(data);
+    });
+
+    uiManager_.getCharacterCreateScreen().setOnCancel([this]() {
+        setState_(AppState::CHARACTER_SELECTION);
+    });
+
+    // Character create result callback
+    gameHandler_.setCharCreateCallback([this](bool success, const std::string& msg) {
+        if (success) {
+            // Auto-select the newly created character
+            if (!pendingCreatedCharacterName_.empty()) {
+                uiManager_.getCharacterScreen().selectCharacterByName(pendingCreatedCharacterName_);
+                pendingCreatedCharacterName_.clear();
+            }
+            setState_(AppState::CHARACTER_SELECTION);
+        } else {
+            uiManager_.getCharacterCreateScreen().setStatus(msg, true);
+            pendingCreatedCharacterName_.clear();
+        }
+    });
+
+    // Character login failure callback
+    gameHandler_.setCharLoginFailCallback([this](const std::string& reason) {
+        LOG_WARNING("Character login failed: ", reason);
+        setState_(AppState::CHARACTER_SELECTION);
+        uiManager_.getCharacterScreen().setStatus("Login failed: " + reason, true);
+    });
+
+    // "Create Character" button on character screen
+    uiManager_.getCharacterScreen().setOnCreateCharacter([this]() {
+        uiManager_.getCharacterCreateScreen().reset();
+        // Apply expansion race/class constraints before showing the screen
+        if (expansionRegistry_ && expansionRegistry_->getActive()) {
+            auto* profile = expansionRegistry_->getActive();
+            uiManager_.getCharacterCreateScreen().setExpansionConstraints(
+                profile->races, profile->classes);
+        }
+        uiManager_.getCharacterCreateScreen().initializePreview(assetManager_);
+        setState_(AppState::CHARACTER_CREATION);
+    });
+
+    // "Back" button on character screen
+    uiManager_.getCharacterScreen().setOnBack([this]() {
+        // Disconnect from world server and reset UI state for fresh realm selection
+        gameHandler_.disconnect();
+        uiManager_.getRealmScreen().reset();
+        uiManager_.getCharacterScreen().reset();
+        setState_(AppState::REALM_SELECTION);
+    });
+
+    // "Delete Character" button on character screen
+    uiManager_.getCharacterScreen().setOnDeleteCharacter([this](uint64_t guid) {
+        gameHandler_.deleteCharacter(guid);
+    });
+
+    // Character delete result callback
+    gameHandler_.setCharDeleteCallback([this](bool success) {
+        if (success) {
+            uiManager_.getCharacterScreen().setStatus("Character deleted.");
+            // Refresh character list
+            gameHandler_.requestCharacterList();
+        } else {
+            uint8_t code = gameHandler_.getLastCharDeleteResult();
+            uiManager_.getCharacterScreen().setStatus(
+                "Delete failed (code " + std::to_string(static_cast<int>(code)) + ").", true);
+        }
+    });
+}
+
+}} // namespace wowee::core

src/core/world_entry_callback_handler.cpp

@@ -0,0 +1,456 @@
+#include "core/world_entry_callback_handler.hpp"
+#include "core/coordinates.hpp"
+#include "core/entity_spawner.hpp"
+#include "core/world_loader.hpp"
+#include "core/logger.hpp"
+#include "rendering/renderer.hpp"
+#include "rendering/camera_controller.hpp"
+#include "rendering/terrain_manager.hpp"
+#include "rendering/wmo_renderer.hpp"
+#include "rendering/m2_renderer.hpp"
+#include "game/game_handler.hpp"
+#include "pipeline/asset_manager.hpp"
+
+#include <cmath>
+#include <sstream>
+
+namespace wowee { namespace core {
+
+WorldEntryCallbackHandler::WorldEntryCallbackHandler(
+    rendering::Renderer& renderer,
+    game::GameHandler& gameHandler,
+    WorldLoader* worldLoader,
+    EntitySpawner* entitySpawner,
+    audio::AudioCoordinator* audioCoordinator,
+    pipeline::AssetManager* assetManager)
+    : renderer_(renderer)
+    , gameHandler_(gameHandler)
+    , worldLoader_(worldLoader)
+    , entitySpawner_(entitySpawner)
+    , audioCoordinator_(audioCoordinator)
+    , assetManager_(assetManager)
+{
+}
+
+// ── helpers ──────────────────────────────────────────────────────
+
+// Sample best floor height at (x, y) from terrain, WMO, and M2 (eliminates 3x duplication)
+std::optional<float> WorldEntryCallbackHandler::sampleBestFloorAt(float x, float y, float probeZ) const {
+    std::optional<float> terrainFloor;
+    std::optional<float> wmoFloor;
+    std::optional<float> m2Floor;
+
+    if (renderer_.getTerrainManager()) {
+        terrainFloor = renderer_.getTerrainManager()->getHeightAt(x, y);
+    }
+    if (renderer_.getWMORenderer()) {
+        wmoFloor = renderer_.getWMORenderer()->getFloorHeight(x, y, probeZ);
+    }
+    if (renderer_.getM2Renderer()) {
+        m2Floor = renderer_.getM2Renderer()->getFloorHeight(x, y, probeZ);
+    }
+
+    std::optional<float> best;
+    if (terrainFloor) best = terrainFloor;
+    if (wmoFloor && (!best || *wmoFloor > *best)) best = wmoFloor;
+    if (m2Floor && (!best || *m2Floor > *best)) best = m2Floor;
+    return best;
+}
+
+// Clear stuck movement state on player
+void WorldEntryCallbackHandler::clearStuckMovement() {
+    if (renderer_.getCameraController()) {
+        renderer_.getCameraController()->clearMovementInputs();
+    }
+    gameHandler_.forceClearTaxiAndMovementState();
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_STOP);
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_STOP_STRAFE);
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_STOP_TURN);
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_STOP_SWIM);
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_HEARTBEAT);
+}
+
+// Sync teleported render position to server
+void WorldEntryCallbackHandler::syncTeleportedPositionToServer(const glm::vec3& renderPos) {
+    glm::vec3 canonical = core::coords::renderToCanonical(renderPos);
+    gameHandler_.setPosition(canonical.x, canonical.y, canonical.z);
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_STOP);
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_STOP_STRAFE);
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_STOP_TURN);
+    gameHandler_.sendMovement(game::Opcode::MSG_MOVE_HEARTBEAT);
+}
+
+// Force server-side teleport via GM command
+void WorldEntryCallbackHandler::forceServerTeleportCommand(const glm::vec3& renderPos) {
+    // Server-authoritative reset first, then teleport.
+    gameHandler_.sendChatMessage(game::ChatType::SAY, ".revive", "");
+    gameHandler_.sendChatMessage(game::ChatType::SAY, ".dismount", "");
+
+    glm::vec3 canonical = core::coords::renderToCanonical(renderPos);
+    glm::vec3 serverPos = core::coords::canonicalToServer(canonical);
+    std::ostringstream cmd;
+    cmd.setf(std::ios::fixed);
+    cmd.precision(3);
+    cmd << ".go xyz "
+        << serverPos.x << " "
+        << serverPos.y << " "
+        << serverPos.z << " "
+        << gameHandler_.getCurrentMapId() << " "
+        << gameHandler_.getMovementInfo().orientation;
+    gameHandler_.sendChatMessage(game::ChatType::SAY, cmd.str(), "");
+}
+
+// Precache tiles in a radius around a position (eliminates repeated tile-loop code)
+static void precacheNearbyTiles(rendering::TerrainManager* terrainMgr,
+                                const glm::vec3& renderPos, int radius) {
+    if (!terrainMgr) return;
+    auto [tileX, tileY] = core::coords::worldToTile(renderPos.x, renderPos.y);
+    int side = 2 * radius + 1;
+    std::vector<std::pair<int,int>> tiles;
+    tiles.reserve(side * side);
+    for (int dy = -radius; dy <= radius; dy++)
+        for (int dx = -radius; dx <= radius; dx++)
+            tiles.push_back({tileX + dx, tileY + dy});
+    terrainMgr->precacheTiles(tiles);
+}
+
+// ── callbacks ────────────────────────────────────────────────────
+
+void WorldEntryCallbackHandler::setupCallbacks() {
+    // World entry callback (online mode) - load terrain when entering world
+    gameHandler_.setWorldEntryCallback([this](uint32_t mapId, float x, float y, float z, bool isInitialEntry) {
+        LOG_INFO("Online world entry: mapId=", mapId, " pos=(", x, ", ", y, ", ", z, ")"
+                 " initial=", isInitialEntry);
+        renderer_.resetCombatVisualState();
+
+        // Reconnect to the same map: terrain stays loaded but all online entities are stale.
+        // Despawn them properly so the server's fresh CREATE_OBJECTs will re-populate the world.
+        uint32_t currentLoadedMap = worldLoader_ ? worldLoader_->getLoadedMapId() : 0xFFFFFFFF;
+        if (entitySpawner_ && mapId == currentLoadedMap && renderer_.getTerrainManager() && isInitialEntry) {
+            LOG_INFO("Reconnect to same map ", mapId, ": clearing stale online entities (terrain preserved)");
+
+            // Pending spawn queues and failure caches — clear so previously-failed GUIDs can retry.
+            // Dead creature guids will be re-populated from fresh server state.
+            entitySpawner_->clearAllQueues();
+
+            // Properly despawn all tracked instances from the renderer
+            entitySpawner_->despawnAllCreatures();
+            entitySpawner_->despawnAllPlayers();
+            entitySpawner_->despawnAllGameObjects();
+
+            // Update player position and re-queue nearby tiles (same logic as teleport)
+            glm::vec3 canonical = core::coords::serverToCanonical(glm::vec3(x, y, z));
+            glm::vec3 renderPos = core::coords::canonicalToRender(canonical);
+            renderer_.getCharacterPosition() = renderPos;
+            if (renderer_.getCameraController()) {
+                auto* ft = renderer_.getCameraController()->getFollowTargetMutable();
+                if (ft) *ft = renderPos;
+                renderer_.getCameraController()->clearMovementInputs();
+                renderer_.getCameraController()->suppressMovementFor(1.0f);
+                renderer_.getCameraController()->suspendGravityFor(10.0f);
+            }
+            worldEntryMovementGraceTimer_ = 2.0f;
+            taxiLandingClampTimer_ = 0.0f;
+            lastTaxiFlight_ = false;
+            renderer_.getTerrainManager()->processReadyTiles();
+            precacheNearbyTiles(renderer_.getTerrainManager(), renderPos, 8);
+            return;
+        }
+
+        // Same-map teleport (taxi landing, GM teleport, hearthstone on same continent):
+        if (mapId == currentLoadedMap && renderer_.getTerrainManager()) {
+            // Check if teleport is far enough to need terrain loading (>500 render units)
+            glm::vec3 oldPos = renderer_.getCharacterPosition();
+            glm::vec3 canonical = core::coords::serverToCanonical(glm::vec3(x, y, z));
+            glm::vec3 renderPos = core::coords::canonicalToRender(canonical);
+            float teleportDistSq = glm::dot(renderPos - oldPos, renderPos - oldPos);
+            bool farTeleport = (teleportDistSq > 500.0f * 500.0f);
+
+            if (farTeleport) {
+                // Far same-map teleport (hearthstone, etc.): defer full world reload
+                // to next frame to avoid blocking the packet handler for 20+ seconds.
+                LOG_WARNING("Far same-map teleport (dist=", std::sqrt(teleportDistSq),
+                            "), deferring world reload to next frame");
+                // Update position immediately so the player doesn't keep moving at old location
+                renderer_.getCharacterPosition() = renderPos;
+                if (renderer_.getCameraController()) {
+                    auto* ft = renderer_.getCameraController()->getFollowTargetMutable();
+                    if (ft) *ft = renderPos;
+                    renderer_.getCameraController()->clearMovementInputs();
+                    renderer_.getCameraController()->suppressMovementFor(1.0f);
+                    renderer_.getCameraController()->suspendGravityFor(10.0f);
+                }
+                if (worldLoader_) worldLoader_->setPendingEntry(mapId, x, y, z);
+                return;
+            }
+            LOG_INFO("Same-map teleport (map ", mapId, "), skipping full world reload");
+            // canonical and renderPos already computed above for distance check
+            renderer_.getCharacterPosition() = renderPos;
+            if (renderer_.getCameraController()) {
+                auto* ft = renderer_.getCameraController()->getFollowTargetMutable();
+                if (ft) *ft = renderPos;
+            }
+            worldEntryMovementGraceTimer_ = 2.0f;
+            taxiLandingClampTimer_ = 0.0f;
+            lastTaxiFlight_ = false;
+            // Stop any movement that was active before the teleport
+            if (renderer_.getCameraController()) {
+                renderer_.getCameraController()->clearMovementInputs();
+                renderer_.getCameraController()->suppressMovementFor(0.5f);
+            }
+            // Kick off async upload for any tiles that finished background
+            // parsing.  Use the bounded processReadyTiles() instead of
+            // processAllReadyTiles() to avoid multi-second main-thread stalls
+            // when many tiles are ready (the rest will finalize over subsequent
+            // frames via the normal terrain update loop).
+            renderer_.getTerrainManager()->processReadyTiles();
+
+            // Queue all remaining tiles within the load radius (8 tiles = 17x17)
+            // at the new position. precacheTiles skips already-loaded/pending tiles,
+            // so this only enqueues tiles that aren't yet in the pipeline.
+            // This ensures background workers immediately start loading everything
+            // visible from the new position (hearthstone may land far from old location).
+            precacheNearbyTiles(renderer_.getTerrainManager(), renderPos, 8);
+            return;
+        }
+
+        // If a world load is already in progress (re-entrant call from
+        // gameHandler->update() processing SMSG_NEW_WORLD during warmup),
+        // defer this entry. The current load will pick it up when it finishes.
+        if (worldLoader_ && worldLoader_->isLoadingWorld()) {
+            LOG_WARNING("World entry deferred: map ", mapId, " while loading (will process after current load)");
+            worldLoader_->setPendingEntry(mapId, x, y, z);
+            return;
+        }
+
+        // Full world loads are expensive and `loadOnlineWorldTerrain()` itself
+        // drives `gameHandler->update()` during warmup. Queue the load here so
+        // it runs after the current packet handler returns instead of recursing
+        // from `SMSG_LOGIN_VERIFY_WORLD` / `SMSG_NEW_WORLD`.
+        LOG_WARNING("Queued world entry: map ", mapId, " pos=(", x, ", ", y, ", ", z, ")");
+        if (worldLoader_) worldLoader_->setPendingEntry(mapId, x, y, z);
+    });
+
+    // /unstuck — nudge player forward and snap to floor at destination.
+    gameHandler_.setUnstuckCallback([this]() {
+        if (!renderer_.getCameraController()) return;
+        worldEntryMovementGraceTimer_ = std::max(worldEntryMovementGraceTimer_, 1.5f);
+        taxiLandingClampTimer_ = 0.0f;
+        lastTaxiFlight_ = false;
+        clearStuckMovement();
+        auto* cc = renderer_.getCameraController();
+        auto* ft = cc->getFollowTargetMutable();
+        if (!ft) return;
+
+        glm::vec3 pos = *ft;
+
+        // Always nudge forward first to escape stuck geometry (M2 models, collision seams).
+        float renderYaw = gameHandler_.getMovementInfo().orientation + glm::radians(90.0f);
+        pos.x += std::cos(renderYaw) * 5.0f;
+        pos.y += std::sin(renderYaw) * 5.0f;
+
+        // Sample floor at the DESTINATION position (after nudge).
+        // Pick the highest floor so we snap up to WMO floors when fallen below.
+        bool foundFloor = false;
+        if (auto floor = sampleBestFloorAt(pos.x, pos.y, pos.z + 60.0f)) {
+            pos.z = *floor + 0.2f;
+            foundFloor = true;
+        }
+
+        cc->teleportTo(pos);
+        if (!foundFloor) {
+            cc->setGrounded(false);  // Let gravity pull player down to a surface
+        }
+        syncTeleportedPositionToServer(pos);
+        forceServerTeleportCommand(pos);
+        clearStuckMovement();
+        LOG_INFO("Unstuck: nudged forward and snapped to floor");
+    });
+
+    // /unstuckgy — stronger recovery: safe/home position, then sampled floor fallback.
+    gameHandler_.setUnstuckGyCallback([this]() {
+        if (!renderer_.getCameraController()) return;
+        worldEntryMovementGraceTimer_ = std::max(worldEntryMovementGraceTimer_, 1.5f);
+        taxiLandingClampTimer_ = 0.0f;
+        lastTaxiFlight_ = false;
+        clearStuckMovement();
+        auto* cc = renderer_.getCameraController();
+        auto* ft = cc->getFollowTargetMutable();
+        if (!ft) return;
+
+        // Try last safe position first (nearby, terrain already loaded)
+        if (cc->hasLastSafePosition()) {
+            glm::vec3 safePos = cc->getLastSafePosition();
+            safePos.z += 5.0f;
+            cc->teleportTo(safePos);
+            syncTeleportedPositionToServer(safePos);
+            forceServerTeleportCommand(safePos);
+            clearStuckMovement();
+            LOG_INFO("Unstuck: teleported to last safe position");
+            return;
+        }
+
+        uint32_t bindMap = 0;
+        glm::vec3 bindPos(0.0f);
+        if (gameHandler_.getHomeBind(bindMap, bindPos) &&
+            bindMap == gameHandler_.getCurrentMapId()) {
+            bindPos.z += 2.0f;
+            cc->teleportTo(bindPos);
+            syncTeleportedPositionToServer(bindPos);
+            forceServerTeleportCommand(bindPos);
+            clearStuckMovement();
+            LOG_INFO("Unstuck: teleported to home bind position");
+            return;
+        }
+
+        // No safe/bind position — try current XY with a high floor probe.
+        glm::vec3 pos = *ft;
+        if (auto floor = sampleBestFloorAt(pos.x, pos.y, pos.z + 120.0f)) {
+            pos.z = *floor + 0.5f;
+            cc->teleportTo(pos);
+            syncTeleportedPositionToServer(pos);
+            forceServerTeleportCommand(pos);
+            clearStuckMovement();
+            LOG_INFO("Unstuck: teleported to sampled floor");
+            return;
+        }
+
+        // Last fallback: high snap to clear deeply bad geometry.
+        pos.z += 60.0f;
+        cc->teleportTo(pos);
+        syncTeleportedPositionToServer(pos);
+        forceServerTeleportCommand(pos);
+        clearStuckMovement();
+        LOG_INFO("Unstuck: high fallback snap");
+    });
+
+    // /unstuckhearth — teleport to hearthstone bind point (server-synced).
+    // Freezes player until terrain loads at destination to prevent falling through world.
+    gameHandler_.setUnstuckHearthCallback([this]() {
+        if (!renderer_.getCameraController()) return;
+
+        uint32_t bindMap = 0;
+        glm::vec3 bindPos(0.0f);
+        if (!gameHandler_.getHomeBind(bindMap, bindPos)) {
+            LOG_WARNING("Unstuck hearth: no bind point available");
+            return;
+        }
+
+        worldEntryMovementGraceTimer_ = 10.0f;  // long grace — terrain load check will clear it
+        taxiLandingClampTimer_ = 0.0f;
+        lastTaxiFlight_ = false;
+        clearStuckMovement();
+
+        auto* cc = renderer_.getCameraController();
+        glm::vec3 renderPos = core::coords::canonicalToRender(bindPos);
+        renderPos.z += 2.0f;
+
+        // Freeze player in place (no gravity/movement) until terrain loads
+        cc->teleportTo(renderPos);
+        cc->setExternalFollow(true);
+        forceServerTeleportCommand(renderPos);
+        clearStuckMovement();
+
+        // Set pending state — update loop will unfreeze once terrain is loaded
+        hearthTeleportPending_ = true;
+        hearthTeleportPos_ = renderPos;
+        hearthTeleportTimer_ = 15.0f;  // 15s safety timeout
+        LOG_INFO("Unstuck hearth: teleporting to bind point, waiting for terrain...");
+    });
+
+    // Auto-unstuck: falling for > 5 seconds = void fall, teleport to map entry
+    if (renderer_.getCameraController()) {
+        renderer_.getCameraController()->setAutoUnstuckCallback([this]() {
+            if (!renderer_.getCameraController()) return;
+            auto* cc = renderer_.getCameraController();
+
+            // Last resort: teleport to map entry point (terrain guaranteed loaded here)
+            glm::vec3 spawnPos = cc->getDefaultPosition();
+            spawnPos.z += 5.0f;
+            cc->teleportTo(spawnPos);
+            forceServerTeleportCommand(spawnPos);
+            LOG_INFO("Auto-unstuck: teleported to map entry point (server synced)");
+        });
+    }
+
+    // Bind point update (innkeeper) — position stored in gameHandler->getHomeBind()
+    gameHandler_.setBindPointCallback([this](uint32_t mapId, float x, float y, float z) {
+        LOG_INFO("Bindpoint set: mapId=", mapId, " pos=(", x, ", ", y, ", ", z, ")");
+    });
+
+    // Hearthstone preload callback: begin loading terrain at the bind point as soon as
+    // the player starts casting Hearthstone.  The ~10 s cast gives enough time for
+    // the background streaming workers to bring tiles into the cache so the player
+    // lands on solid ground instead of falling through un-loaded terrain.
+    gameHandler_.setHearthstonePreloadCallback([this](uint32_t mapId, float x, float y, float z) {
+        auto* terrainMgr = renderer_.getTerrainManager();
+        if (!terrainMgr || !assetManager_) return;
+
+        // Resolve map name from the cached Map.dbc table
+        std::string mapName;
+        if (worldLoader_) {
+            mapName = worldLoader_->getMapNameById(mapId);
+        }
+        if (mapName.empty()) {
+            mapName = WorldLoader::mapIdToName(mapId);
+        }
+        if (mapName.empty()) mapName = "Azeroth";
+
+        uint32_t currentLoadedMap = worldLoader_ ? worldLoader_->getLoadedMapId() : 0xFFFFFFFF;
+        if (mapId == currentLoadedMap) {
+            // Same map: pre-enqueue tiles around the bind point so workers start
+            // loading them now. Uses render-space coords (canonicalToRender).
+            // Use radius 4 (9x9=81 tiles) — hearthstone cast is ~10s, enough time
+            // for workers to parse most of these before the player arrives.
+            glm::vec3 renderPos = core::coords::canonicalToRender(glm::vec3(x, y, z));
+            precacheNearbyTiles(terrainMgr, renderPos, 4);
+            auto [tileX, tileY] = core::coords::worldToTile(renderPos.x, renderPos.y);
+            LOG_INFO("Hearthstone preload: enqueued 81"
+                     " tiles around bind point (same map) tile=[", tileX, ",", tileY, "]");
+        } else {
+            // Different map: warm the file cache so ADT parsing is fast when
+            // loadOnlineWorldTerrain runs its blocking load loop.
+            // homeBindPos_ is canonical; startWorldPreload expects server coords.
+            glm::vec3 server = core::coords::canonicalToServer(glm::vec3(x, y, z));
+            if (worldLoader_) {
+                worldLoader_->startWorldPreload(mapId, mapName, server.x, server.y);
+            }
+            LOG_INFO("Hearthstone preload: started file cache warm for map '", mapName,
+                     "' (id=", mapId, ")");
+        }
+    });
+}
+
+// ── per-frame update ─────────────────────────────────────────────
+
+void WorldEntryCallbackHandler::update(float deltaTime) {
+    // Hearth teleport: keep player frozen until terrain loads at destination
+    if (hearthTeleportPending_ && renderer_.getTerrainManager()) {
+        hearthTeleportTimer_ -= deltaTime;
+        auto terrainH = renderer_.getTerrainManager()->getHeightAt(
+            hearthTeleportPos_.x, hearthTeleportPos_.y);
+        if (terrainH || hearthTeleportTimer_ <= 0.0f) {
+            // Terrain loaded (or timeout) — snap to floor and release
+            if (terrainH) {
+                hearthTeleportPos_.z = *terrainH + 0.5f;
+                renderer_.getCameraController()->teleportTo(hearthTeleportPos_);
+            }
+            renderer_.getCameraController()->setExternalFollow(false);
+            worldEntryMovementGraceTimer_ = 1.0f;
+            hearthTeleportPending_ = false;
+            LOG_INFO("Unstuck hearth: terrain loaded, player released",
+                     terrainH ? "" : " (timeout)");
+        }
+    }
+}
+
+void WorldEntryCallbackHandler::resetState() {
+    hearthTeleportPending_ = false;
+    hearthTeleportPos_ = glm::vec3(0.0f);
+    hearthTeleportTimer_ = 0.0f;
+    worldEntryMovementGraceTimer_ = 0.0f;
+    lastTaxiFlight_ = false;
+    taxiLandingClampTimer_ = 0.0f;
+}
+
+}} // namespace wowee::core

src/core/world_loader.cpp

@@ -3,6 +3,7 @@
 
 #include "core/world_loader.hpp"
 #include "core/application.hpp"
+#include "core/world_entry_callback_handler.hpp"
 #include "rendering/animation/animation_ids.hpp"
 #include "core/entity_spawner.hpp"
 #include "core/appearance_composer.hpp"
@@ -173,9 +174,11 @@ void WorldLoader::processPendingEntry() {
     auto entry = *pendingWorldEntry_;
     pendingWorldEntry_.reset();
     LOG_WARNING("Processing deferred world entry: map ", entry.mapId);
-    app_.worldEntryMovementGraceTimer_ = 2.0f;
-    app_.taxiLandingClampTimer_ = 0.0f;
-    app_.lastTaxiFlight_ = false;
+    if (app_.worldEntryCallbacks_) {
+        app_.worldEntryCallbacks_->setWorldEntryMovementGraceTimer(2.0f);
+        app_.worldEntryCallbacks_->setTaxiLandingClampTimer(0.0f);
+        app_.worldEntryCallbacks_->setLastTaxiFlight(false);
+    }
     // Clear camera movement inputs before loading terrain
     if (renderer_ && renderer_->getCameraController()) {
         renderer_->getCameraController()->clearMovementInputs();
@@ -1075,9 +1078,11 @@ void WorldLoader::loadOnlineWorldTerrain(uint32_t mapId, float x, float y, float
         auto entry = *pendingWorldEntry_;
         pendingWorldEntry_.reset();
         LOG_WARNING("Processing deferred world entry: map ", entry.mapId);
-        app_.worldEntryMovementGraceTimer_ = 2.0f;
-        app_.taxiLandingClampTimer_ = 0.0f;
-        app_.lastTaxiFlight_ = false;
+        if (app_.worldEntryCallbacks_) {
+            app_.worldEntryCallbacks_->setWorldEntryMovementGraceTimer(2.0f);
+            app_.worldEntryCallbacks_->setTaxiLandingClampTimer(0.0f);
+            app_.worldEntryCallbacks_->setLastTaxiFlight(false);
+        }
         // Recursive call — sets loadedMapId_ and IN_GAME state for the final map.
         loadOnlineWorldTerrain(entry.mapId, entry.x, entry.y, entry.z);
         return;  // The recursive call handles setState(IN_GAME).