Add mount system and crash mouse-release handler

Render mount M2 model under player with seated animation, apply creature
skin textures, server-driven speed via SMSG_FORCE_RUN_SPEED_CHANGE, and
/dismount command. X11 XUngrabPointer on crash/hang to always release mouse.

include/core/application.hpp

@@ -150,6 +150,10 @@ private:
     std::unordered_map<uint64_t, uint32_t> creatureModelIds_;   // guid → loaded modelId
     std::unordered_map<uint32_t, uint32_t> displayIdModelCache_; // displayId → modelId (model caching)
     uint32_t nextCreatureModelId_ = 5000;  // Model IDs for online creatures
+
+    // Mount model tracking
+    uint32_t mountInstanceId_ = 0;
+    uint32_t mountModelId_ = 0;
     bool creatureLookupsBuilt_ = false;
 
     // Deferred creature spawn queue (throttles spawning to avoid hangs)

include/game/entity.hpp

@@ -189,6 +189,10 @@ public:
     uint32_t getDisplayId() const { return displayId; }
     void setDisplayId(uint32_t id) { displayId = id; }
 
+    // Mount display ID (UNIT_FIELD_MOUNTDISPLAYID, index 69)
+    uint32_t getMountDisplayId() const { return mountDisplayId; }
+    void setMountDisplayId(uint32_t id) { mountDisplayId = id; }
+
     // Unit flags (UNIT_FIELD_FLAGS, index 59)
     uint32_t getUnitFlags() const { return unitFlags; }
     void setUnitFlags(uint32_t f) { unitFlags = f; }
@@ -216,6 +220,7 @@ protected:
     uint32_t level = 1;
     uint32_t entry = 0;
     uint32_t displayId = 0;
+    uint32_t mountDisplayId = 0;
     uint32_t unitFlags = 0;
     uint32_t npcFlags = 0;
     uint32_t factionTemplate = 0;

include/game/game_handler.hpp

@@ -455,6 +455,13 @@ public:
     }
     const std::unordered_map<uint64_t, QuestGiverStatus>& getNpcQuestStatuses() const { return npcQuestStatus_; }
 
+    // Mount state
+    using MountCallback = std::function<void(uint32_t mountDisplayId)>;  // 0 = dismount
+    void setMountCallback(MountCallback cb) { mountCallback_ = std::move(cb); }
+    bool isMounted() const { return currentMountDisplayId_ != 0; }
+    float getServerRunSpeed() const { return serverRunSpeed_; }
+    void dismount();
+
     // Taxi / Flight Paths
     bool isTaxiWindowOpen() const { return taxiWindowOpen_; }
     void closeTaxi();
@@ -630,6 +637,9 @@ private:
     // ---- Teleport handler ----
     void handleTeleportAck(network::Packet& packet);
 
+    // ---- Speed change handler ----
+    void handleForceRunSpeedChange(network::Packet& packet);
+
     // ---- Taxi handlers ----
     void handleShowTaxiNodes(network::Packet& packet);
     void handleActivateTaxiReply(network::Packet& packet);
@@ -844,6 +854,8 @@ private:
     ShowTaxiNodesData currentTaxiData_;
     uint64_t taxiNpcGuid_ = 0;
     bool onTaxiFlight_ = false;
+    uint32_t knownTaxiMask_[12] = {};  // Track previously known nodes for discovery alerts
+    bool taxiMaskInitialized_ = false; // First SMSG_SHOWTAXINODES seeds mask without alerts
 
     // Vendor
     bool vendorWindowOpen = false;
@@ -877,6 +889,9 @@ private:
     NpcRespawnCallback npcRespawnCallback_;
     MeleeSwingCallback meleeSwingCallback_;
     NpcSwingCallback npcSwingCallback_;
+    MountCallback mountCallback_;
+    uint32_t currentMountDisplayId_ = 0;
+    float serverRunSpeed_ = 7.0f;
     bool playerDead_ = false;
 };
 

include/game/opcodes.hpp

@@ -241,9 +241,16 @@ enum class Opcode : uint16_t {
     MSG_MOVE_TELEPORT_ACK            = 0x0C7,
     SMSG_TRANSFER_PENDING            = 0x003F,
 
+    // ---- Speed Changes ----
+    SMSG_FORCE_RUN_SPEED_CHANGE      = 0x00E2,
+
+    // ---- Mount ----
+    CMSG_CANCEL_MOUNT_AURA           = 0x0375,
+
     // ---- Taxi / Flight Paths ----
     SMSG_SHOWTAXINODES               = 0x01A9,
     SMSG_ACTIVATETAXIREPLY           = 0x01AE,
+    SMSG_NEW_TAXI_PATH               = 0x01AF,
     CMSG_ACTIVATETAXIEXPRESS         = 0x0312,
 };
 

include/rendering/camera_controller.hpp

@@ -72,6 +72,8 @@ public:
     using MovementCallback = std::function<void(uint32_t opcode)>;
     void setMovementCallback(MovementCallback cb) { movementCallback = std::move(cb); }
     void setUseWoWSpeed(bool use) { useWoWSpeed = use; }
+    void setRunSpeedOverride(float speed) { runSpeedOverride_ = speed; }
+    void setMounted(bool m) { mounted_ = m; }
 
     // For first-person player hiding
     void setCharacterRenderer(class CharacterRenderer* cr, uint32_t playerId) {
@@ -188,6 +190,10 @@ private:
     static constexpr float WOW_GRAVITY = -19.29f;
     static constexpr float WOW_JUMP_VELOCITY = 7.96f;
 
+    // Server-driven run speed override (0 = use default WOW_RUN_SPEED)
+    float runSpeedOverride_ = 0.0f;
+    bool mounted_ = false;
+
     // Online mode: trust server position, don't prefer outdoors over WMO floors
     bool onlineMode = false;
 

include/rendering/renderer.hpp

@@ -125,6 +125,11 @@ public:
     void triggerMeleeSwing();
     void setEquippedWeaponType(uint32_t inventoryType) { equippedWeaponInvType_ = inventoryType; meleeAnimId = 0; }
 
+    // Mount rendering
+    void setMounted(uint32_t mountInstId, float heightOffset);
+    void clearMount();
+    bool isMounted() const { return mountInstanceId_ != 0; }
+
     // Selection circle for targeted entity
     void setSelectionCircle(const glm::vec3& pos, float radius, const glm::vec3& color);
     void clearSelectionCircle();
@@ -214,7 +219,7 @@ private:
     float characterYaw = 0.0f;
 
     // Character animation state
-    enum class CharAnimState { IDLE, WALK, RUN, JUMP_START, JUMP_MID, JUMP_END, SIT_DOWN, SITTING, EMOTE, SWIM_IDLE, SWIM, MELEE_SWING };
+    enum class CharAnimState { IDLE, WALK, RUN, JUMP_START, JUMP_MID, JUMP_END, SIT_DOWN, SITTING, EMOTE, SWIM_IDLE, SWIM, MELEE_SWING, MOUNT };
     CharAnimState charAnimState = CharAnimState::IDLE;
     void updateCharacterAnimation();
     bool isFootstepAnimationState() const;
@@ -259,6 +264,10 @@ private:
     uint32_t meleeAnimId = 0;
     uint32_t equippedWeaponInvType_ = 0;
 
+    // Mount state
+    uint32_t mountInstanceId_ = 0;
+    float mountHeightOffset_ = 0.0f;
+
     bool terrainEnabled = true;
     bool terrainLoaded = false;