Project restructuring [PART.3]

modules/worldengine/lib-collision/src/Models/GameObjectModel.cpp

@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ */
+
+#include "VMapFactory.h"
+#include "VMapManager2.h"
+#include "VMapDefinitions.h"
+#include "WorldModel.h"
+
+#include "GameObjectModel.h"
+#include "Log.h"
+#include "GameObject.h"
+#include "Creature.h"
+#include "TemporarySummon.h"
+#include "Object.h"
+#include "DBCStores.h"
+#include "World.h"
+
+using G3D::Vector3;
+using G3D::Ray;
+using G3D::AABox;
+
+struct GameobjectModelData
+{
+    GameobjectModelData(const std::string& name_, const AABox& box) :
+        bound(box), name(name_) {}
+
+    AABox bound;
+    std::string name;
+};
+
+typedef UNORDERED_MAP<uint32, GameobjectModelData> ModelList;
+ModelList model_list;
+
+void LoadGameObjectModelList()
+{
+//#ifndef NO_CORE_FUNCS
+    uint32 oldMSTime = getMSTime();
+//#endif
+
+    FILE* model_list_file = fopen((sWorld->GetDataPath() + "vmaps/" + VMAP::GAMEOBJECT_MODELS).c_str(), "rb");
+    if (!model_list_file)
+    {
+        sLog->outError("Unable to open '%s' file.", VMAP::GAMEOBJECT_MODELS);
+        return;
+    }
+
+    uint32 name_length, displayId;
+    char buff[500];
+    while (true)
+    {
+        Vector3 v1, v2;
+        if (fread(&displayId, sizeof(uint32), 1, model_list_file) != 1)
+            if (feof(model_list_file))  // EOF flag is only set after failed reading attempt
+                break;
+
+        if (fread(&name_length, sizeof(uint32), 1, model_list_file) != 1
+            || name_length >= sizeof(buff)
+            || fread(&buff, sizeof(char), name_length, model_list_file) != name_length
+            || fread(&v1, sizeof(Vector3), 1, model_list_file) != 1
+            || fread(&v2, sizeof(Vector3), 1, model_list_file) != 1)
+        {
+            sLog->outError("File '%s' seems to be corrupted!", VMAP::GAMEOBJECT_MODELS);
+            break;
+        }
+
+        model_list.insert
+        (
+            ModelList::value_type( displayId, GameobjectModelData(std::string(buff, name_length), AABox(v1, v2)) )
+        );
+    }
+
+    fclose(model_list_file);
+    sLog->outString(">> Loaded %u GameObject models in %u ms", uint32(model_list.size()), GetMSTimeDiffToNow(oldMSTime));
+    sLog->outString();
+}
+
+GameObjectModel::~GameObjectModel()
+{
+    if (iModel)
+        ((VMAP::VMapManager2*)VMAP::VMapFactory::createOrGetVMapManager())->releaseModelInstance(name);
+}
+
+bool GameObjectModel::initialize(const GameObject& go, const GameObjectDisplayInfoEntry& info)
+{
+    ModelList::const_iterator it = model_list.find(info.Displayid);
+    if (it == model_list.end())
+        return false;
+
+    G3D::AABox mdl_box(it->second.bound);
+    // ignore models with no bounds
+    if (mdl_box == G3D::AABox::zero())
+    {
+        sLog->outError("GameObject model %s has zero bounds, loading skipped", it->second.name.c_str());
+        return false;
+    }
+
+    iModel = ((VMAP::VMapManager2*)VMAP::VMapFactory::createOrGetVMapManager())->acquireModelInstance(sWorld->GetDataPath() + "vmaps/", it->second.name);
+
+    if (!iModel)
+        return false;
+
+    name = it->second.name;
+    //flags = VMAP::MOD_M2;
+    //adtId = 0;
+    //ID = 0;
+    iPos = Vector3(go.GetPositionX(), go.GetPositionY(), go.GetPositionZ());
+
+    // pussywizard: 
+    phasemask = (go.GetGoState() == GO_STATE_READY || go.IsTransport()) ? go.GetPhaseMask() : 0;
+
+    iScale = go.GetFloatValue(OBJECT_FIELD_SCALE_X);
+    iInvScale = 1.f / iScale;
+
+    G3D::Matrix3 iRotation = G3D::Matrix3::fromEulerAnglesZYX(go.GetOrientation(), 0, 0);
+    iInvRot = iRotation.inverse();
+    // transform bounding box:
+    mdl_box = AABox(mdl_box.low() * iScale, mdl_box.high() * iScale);
+    AABox rotated_bounds;
+    for (int i = 0; i < 8; ++i)
+        rotated_bounds.merge(iRotation * mdl_box.corner(i));
+
+    iBound = rotated_bounds + iPos;
+#ifdef SPAWN_CORNERS
+    // test:
+    for (int i = 0; i < 8; ++i)
+    {
+        Vector3 pos(iBound.corner(i));
+        const_cast<GameObject&>(go).SummonCreature(1, pos.x, pos.y, pos.z, 0, TEMPSUMMON_MANUAL_DESPAWN);
+    }
+#endif
+
+    owner = &go;
+    return true;
+}
+
+GameObjectModel* GameObjectModel::Create(const GameObject& go)
+{
+    const GameObjectDisplayInfoEntry* info = sGameObjectDisplayInfoStore.LookupEntry(go.GetDisplayId());
+    if (!info)
+        return NULL;
+
+    GameObjectModel* mdl = new GameObjectModel();
+    if (!mdl->initialize(go, *info))
+    {
+        delete mdl;
+        return NULL;
+    }
+
+    return mdl;
+}
+
+bool GameObjectModel::intersectRay(const G3D::Ray& ray, float& MaxDist, bool StopAtFirstHit, uint32 ph_mask) const
+{
+    if (!(phasemask & ph_mask) || !owner->isSpawned())
+        return false;
+
+    float time = ray.intersectionTime(iBound);
+    if (time == G3D::inf())
+        return false;
+
+    // child bounds are defined in object space:
+    Vector3 p = iInvRot * (ray.origin() - iPos) * iInvScale;
+    Ray modRay(p, iInvRot * ray.direction());
+    float distance = MaxDist * iInvScale;
+    bool hit = iModel->IntersectRay(modRay, distance, StopAtFirstHit);
+    if (hit)
+    {
+        distance *= iScale;
+        MaxDist = distance;
+    }
+    return hit;
+}
+
+bool GameObjectModel::UpdatePosition()
+{
+    if (!iModel)
+        return false;
+
+    ModelList::const_iterator it = model_list.find(owner->GetDisplayId());
+    if (it == model_list.end())
+        return false;
+
+    G3D::AABox mdl_box(it->second.bound);
+    // ignore models with no bounds
+    if (mdl_box == G3D::AABox::zero())
+    {
+        //VMAP_ERROR_LOG("misc", "GameObject model %s has zero bounds, loading skipped", it->second.name.c_str());
+        return false;
+    }
+
+    iPos = Vector3(owner->GetPositionX(), owner->GetPositionY(), owner->GetPositionZ());
+    G3D::Matrix3 iRotation = G3D::Matrix3::fromEulerAnglesZYX(owner->GetOrientation(), 0, 0);
+    iInvRot = iRotation.inverse();
+    // transform bounding box:
+    mdl_box = AABox(mdl_box.low() * iScale, mdl_box.high() * iScale);
+    AABox rotated_bounds;
+    for (int i = 0; i < 8; ++i)
+        rotated_bounds.merge(iRotation * mdl_box.corner(i));
+
+    iBound = rotated_bounds + iPos;
+#ifdef SPAWN_CORNERS
+    // test:
+    for (int i = 0; i < 8; ++i)
+    {
+        Vector3 pos(iBound.corner(i));
+        owner->SummonCreature(1, pos.x, pos.y, pos.z, 0.0f, TEMPSUMMON_TIMED_DESPAWN, 10000);
+    }
+#endif
+
+    return true;
+}

modules/worldengine/lib-collision/src/Models/GameObjectModel.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ */
+
+#ifndef _GAMEOBJECT_MODEL_H
+#define _GAMEOBJECT_MODEL_H
+
+#include <G3D/Matrix3.h>
+#include <G3D/Vector3.h>
+#include <G3D/AABox.h>
+#include <G3D/Ray.h>
+
+#include "Define.h"
+
+namespace VMAP
+{
+    class WorldModel;
+}
+
+class GameObject;
+struct GameObjectDisplayInfoEntry;
+
+class GameObjectModel /*, public Intersectable*/
+{
+    uint32 phasemask;
+    G3D::AABox iBound;
+    G3D::Matrix3 iInvRot;
+    G3D::Vector3 iPos;
+    //G3D::Vector3 iRot;
+    float iInvScale;
+    float iScale;
+    VMAP::WorldModel* iModel;
+    GameObject const* owner;
+
+    GameObjectModel() : phasemask(0), iInvScale(0), iScale(0), iModel(NULL), owner(NULL) { }
+    bool initialize(const GameObject& go, const GameObjectDisplayInfoEntry& info);
+
+public:
+    std::string name;
+
+    const G3D::AABox& getBounds() const { return iBound; }
+
+    ~GameObjectModel();
+
+    const G3D::Vector3& getPosition() const { return iPos;}
+
+    /**    Enables\disables collision. */
+    void disable() { phasemask = 0;}
+    void enable(uint32 ph_mask) { phasemask = ph_mask;}
+
+    bool isEnabled() const {return phasemask != 0;}
+
+    bool intersectRay(const G3D::Ray& Ray, float& MaxDist, bool StopAtFirstHit, uint32 ph_mask) const;
+
+    static GameObjectModel* Create(const GameObject& go);
+
+    bool UpdatePosition();
+};
+
+#endif // _GAMEOBJECT_MODEL_H

modules/worldengine/lib-collision/src/Models/ModelInstance.cpp

@@ -0,0 +1,211 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ */
+
+#include "ModelInstance.h"
+#include "WorldModel.h"
+#include "MapTree.h"
+#include "VMapDefinitions.h"
+
+using G3D::Vector3;
+using G3D::Ray;
+
+namespace VMAP
+{
+    ModelInstance::ModelInstance(const ModelSpawn &spawn, WorldModel* model): ModelSpawn(spawn), iModel(model)
+    {
+        iInvRot = G3D::Matrix3::fromEulerAnglesZYX(G3D::pi()*iRot.y/180.f, G3D::pi()*iRot.x/180.f, G3D::pi()*iRot.z/180.f).inverse();
+        iInvScale = 1.f/iScale;
+    }
+
+    bool ModelInstance::intersectRay(const G3D::Ray& pRay, float& pMaxDist, bool StopAtFirstHit) const
+    {
+        if (!iModel)
+        {
+            //std::cout << "<object not loaded>\n";
+            return false;
+        }
+        float time = pRay.intersectionTime(iBound);
+        if (time == G3D::inf())
+        {
+//            std::cout << "Ray does not hit '" << name << "'\n";
+
+            return false;
+        }
+//        std::cout << "Ray crosses bound of '" << name << "'\n";
+/*        std::cout << "ray from:" << pRay.origin().x << ", " << pRay.origin().y << ", " << pRay.origin().z
+                  << " dir:" << pRay.direction().x << ", " << pRay.direction().y << ", " << pRay.direction().z
+                  << " t/tmax:" << time << '/' << pMaxDist;
+        std::cout << "\nBound lo:" << iBound.low().x << ", " << iBound.low().y << ", " << iBound.low().z << " hi: "
+                  << iBound.high().x << ", " << iBound.high().y << ", " << iBound.high().z << std::endl; */
+        // child bounds are defined in object space:
+        Vector3 p = iInvRot * (pRay.origin() - iPos) * iInvScale;
+        Ray modRay(p, iInvRot * pRay.direction());
+        float distance = pMaxDist * iInvScale;
+        bool hit = iModel->IntersectRay(modRay, distance, StopAtFirstHit);
+        if (hit)
+        {
+            distance *= iScale;
+            pMaxDist = distance;
+        }
+        return hit;
+    }
+
+    void ModelInstance::intersectPoint(const G3D::Vector3& p, AreaInfo &info) const
+    {
+        if (!iModel)
+        {
+#ifdef VMAP_DEBUG
+            std::cout << "<object not loaded>\n";
+#endif
+            return;
+        }
+
+        // M2 files don't contain area info, only WMO files
+        if (flags & MOD_M2)
+            return;
+        if (!iBound.contains(p))
+            return;
+        // child bounds are defined in object space:
+        Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
+        Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
+        float zDist;
+        if (iModel->IntersectPoint(pModel, zDirModel, zDist, info))
+        {
+            Vector3 modelGround = pModel + zDist * zDirModel;
+            // Transform back to world space. Note that:
+            // Mat * vec == vec * Mat.transpose()
+            // and for rotation matrices: Mat.inverse() == Mat.transpose()
+            float world_Z = ((modelGround * iInvRot) * iScale + iPos).z;
+            if (info.ground_Z < world_Z)
+            {
+                info.ground_Z = world_Z;
+                info.adtId = adtId;
+            }
+        }
+    }
+
+    bool ModelInstance::GetLocationInfo(const G3D::Vector3& p, LocationInfo &info) const
+    {
+        if (!iModel)
+        {
+#ifdef VMAP_DEBUG
+            std::cout << "<object not loaded>\n";
+#endif
+            return false;
+        }
+
+        // M2 files don't contain area info, only WMO files
+        if (flags & MOD_M2)
+            return false;
+        if (!iBound.contains(p))
+            return false;
+        // child bounds are defined in object space:
+        Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
+        Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
+        float zDist;
+        if (iModel->GetLocationInfo(pModel, zDirModel, zDist, info))
+        {
+            Vector3 modelGround = pModel + zDist * zDirModel;
+            // Transform back to world space. Note that:
+            // Mat * vec == vec * Mat.transpose()
+            // and for rotation matrices: Mat.inverse() == Mat.transpose()
+            float world_Z = ((modelGround * iInvRot) * iScale + iPos).z;
+            if (info.ground_Z < world_Z) // hm...could it be handled automatically with zDist at intersection?
+            {
+                info.ground_Z = world_Z;
+                info.hitInstance = this;
+                return true;
+            }
+        }
+        return false;
+    }
+
+    bool ModelInstance::GetLiquidLevel(const G3D::Vector3& p, LocationInfo &info, float &liqHeight) const
+    {
+        // child bounds are defined in object space:
+        Vector3 pModel = iInvRot * (p - iPos) * iInvScale;
+        //Vector3 zDirModel = iInvRot * Vector3(0.f, 0.f, -1.f);
+        float zDist;
+        if (info.hitModel->GetLiquidLevel(pModel, zDist))
+        {
+            // calculate world height (zDist in model coords):
+            // assume WMO not tilted (wouldn't make much sense anyway)
+            liqHeight = zDist * iScale + iPos.z;
+            return true;
+        }
+        return false;
+    }
+
+    bool ModelSpawn::readFromFile(FILE* rf, ModelSpawn &spawn)
+    {
+        uint32 check = 0, nameLen;
+        check += fread(&spawn.flags, sizeof(uint32), 1, rf);
+        // EoF?
+        if (!check)
+        {
+            if (ferror(rf))
+                std::cout << "Error reading ModelSpawn!\n";
+            return false;
+        }
+        check += fread(&spawn.adtId, sizeof(uint16), 1, rf);
+        check += fread(&spawn.ID, sizeof(uint32), 1, rf);
+        check += fread(&spawn.iPos, sizeof(float), 3, rf);
+        check += fread(&spawn.iRot, sizeof(float), 3, rf);
+        check += fread(&spawn.iScale, sizeof(float), 1, rf);
+        bool has_bound = (spawn.flags & MOD_HAS_BOUND);
+        if (has_bound) // only WMOs have bound in MPQ, only available after computation
+        {
+            Vector3 bLow, bHigh;
+            check += fread(&bLow, sizeof(float), 3, rf);
+            check += fread(&bHigh, sizeof(float), 3, rf);
+            spawn.iBound = G3D::AABox(bLow, bHigh);
+        }
+        check += fread(&nameLen, sizeof(uint32), 1, rf);
+        if (check != uint32(has_bound ? 17 : 11))
+        {
+            std::cout << "Error reading ModelSpawn!\n";
+            return false;
+        }
+        char nameBuff[500];
+        if (nameLen > 500) // file names should never be that long, must be file error
+        {
+            std::cout << "Error reading ModelSpawn, file name too long!\n";
+            return false;
+        }
+        check = fread(nameBuff, sizeof(char), nameLen, rf);
+        if (check != nameLen)
+        {
+            std::cout << "Error reading ModelSpawn!\n";
+            return false;
+        }
+        spawn.name = std::string(nameBuff, nameLen);
+        return true;
+    }
+
+    bool ModelSpawn::writeToFile(FILE* wf, const ModelSpawn &spawn)
+    {
+        uint32 check=0;
+        check += fwrite(&spawn.flags, sizeof(uint32), 1, wf);
+        check += fwrite(&spawn.adtId, sizeof(uint16), 1, wf);
+        check += fwrite(&spawn.ID, sizeof(uint32), 1, wf);
+        check += fwrite(&spawn.iPos, sizeof(float), 3, wf);
+        check += fwrite(&spawn.iRot, sizeof(float), 3, wf);
+        check += fwrite(&spawn.iScale, sizeof(float), 1, wf);
+        bool has_bound = (spawn.flags & MOD_HAS_BOUND);
+        if (has_bound) // only WMOs have bound in MPQ, only available after computation
+        {
+            check += fwrite(&spawn.iBound.low(), sizeof(float), 3, wf);
+            check += fwrite(&spawn.iBound.high(), sizeof(float), 3, wf);
+        }
+        uint32 nameLen = spawn.name.length();
+        check += fwrite(&nameLen, sizeof(uint32), 1, wf);
+        if (check != uint32(has_bound ? 17 : 11)) return false;
+        check = fwrite(spawn.name.c_str(), sizeof(char), nameLen, wf);
+        if (check != nameLen) return false;
+        return true;
+    }
+
+}

modules/worldengine/lib-collision/src/Models/ModelInstance.h

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ */
+
+#ifndef _MODELINSTANCE_H_
+#define _MODELINSTANCE_H_
+
+#include <G3D/Matrix3.h>
+#include <G3D/Vector3.h>
+#include <G3D/AABox.h>
+#include <G3D/Ray.h>
+
+#include "Define.h"
+
+namespace VMAP
+{
+    class WorldModel;
+    struct AreaInfo;
+    struct LocationInfo;
+
+    enum ModelFlags
+    {
+        MOD_M2 = 1,
+        MOD_WORLDSPAWN = 1<<1,
+        MOD_HAS_BOUND = 1<<2
+    };
+
+    class ModelSpawn
+    {
+        public:
+            //mapID, tileX, tileY, Flags, ID, Pos, Rot, Scale, Bound_lo, Bound_hi, name
+            uint32 flags;
+            uint16 adtId;
+            uint32 ID;
+            G3D::Vector3 iPos;
+            G3D::Vector3 iRot;
+            float iScale;
+            G3D::AABox iBound;
+            std::string name;
+            bool operator==(const ModelSpawn &other) const { return ID == other.ID; }
+            //uint32 hashCode() const { return ID; }
+            // temp?
+            const G3D::AABox& getBounds() const { return iBound; }
+
+            static bool readFromFile(FILE* rf, ModelSpawn &spawn);
+            static bool writeToFile(FILE* rw, const ModelSpawn &spawn);
+    };
+
+    class ModelInstance: public ModelSpawn
+    {
+        public:
+            ModelInstance(): iInvScale(0.0f), iModel(0) { }
+            ModelInstance(const ModelSpawn &spawn, WorldModel* model);
+            void setUnloaded() { iModel = 0; }
+            bool intersectRay(const G3D::Ray& pRay, float& pMaxDist, bool StopAtFirstHit) const;
+            void intersectPoint(const G3D::Vector3& p, AreaInfo &info) const;
+            bool GetLocationInfo(const G3D::Vector3& p, LocationInfo &info) const;
+            bool GetLiquidLevel(const G3D::Vector3& p, LocationInfo &info, float &liqHeight) const;
+        protected:
+            G3D::Matrix3 iInvRot;
+            float iInvScale;
+            WorldModel* iModel;
+        public:
+            WorldModel* getWorldModel();
+    };
+} // namespace VMAP
+
+#endif // _MODELINSTANCE

modules/worldengine/lib-collision/src/Models/WorldModel.cpp

@@ -0,0 +1,574 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ */
+
+#include "WorldModel.h"
+#include "ModelInstance.h"
+#include "VMapDefinitions.h"
+#include "MapTree.h"
+
+using G3D::Vector3;
+using G3D::Ray;
+
+template<> struct BoundsTrait<VMAP::GroupModel>
+{
+    static void getBounds(const VMAP::GroupModel& obj, G3D::AABox& out) { out = obj.GetBound(); }
+};
+
+namespace VMAP
+{
+    bool IntersectTriangle(const MeshTriangle &tri, std::vector<Vector3>::const_iterator points, const G3D::Ray &ray, float &distance)
+    {
+        static const float EPS = 1e-5f;
+
+        // See RTR2 ch. 13.7 for the algorithm.
+
+        const Vector3 e1 = points[tri.idx1] - points[tri.idx0];
+        const Vector3 e2 = points[tri.idx2] - points[tri.idx0];
+        const Vector3 p(ray.direction().cross(e2));
+        const float a = e1.dot(p);
+
+        if (fabs(a) < EPS) {
+            // Determinant is ill-conditioned; abort early
+            return false;
+        }
+
+        const float f = 1.0f / a;
+        const Vector3 s(ray.origin() - points[tri.idx0]);
+        const float u = f * s.dot(p);
+
+        if ((u < 0.0f) || (u > 1.0f)) {
+            // We hit the plane of the m_geometry, but outside the m_geometry
+            return false;
+        }
+
+        const Vector3 q(s.cross(e1));
+        const float v = f * ray.direction().dot(q);
+
+        if ((v < 0.0f) || ((u + v) > 1.0f)) {
+            // We hit the plane of the triangle, but outside the triangle
+            return false;
+        }
+
+        const float t = f * e2.dot(q);
+
+        if ((t > 0.0f) && (t < distance))
+        {
+            // This is a new hit, closer than the previous one
+            distance = t;
+
+            /* baryCoord[0] = 1.0 - u - v;
+            baryCoord[1] = u;
+            baryCoord[2] = v; */
+
+            return true;
+        }
+        // This hit is after the previous hit, so ignore it
+        return false;
+    }
+
+    class TriBoundFunc
+    {
+        public:
+            TriBoundFunc(std::vector<Vector3> &vert): vertices(vert.begin()) { }
+            void operator()(const MeshTriangle &tri, G3D::AABox &out) const
+            {
+                G3D::Vector3 lo = vertices[tri.idx0];
+                G3D::Vector3 hi = lo;
+
+                lo = (lo.min(vertices[tri.idx1])).min(vertices[tri.idx2]);
+                hi = (hi.max(vertices[tri.idx1])).max(vertices[tri.idx2]);
+
+                out = G3D::AABox(lo, hi);
+            }
+        protected:
+            const std::vector<Vector3>::const_iterator vertices;
+    };
+
+    // ===================== WmoLiquid ==================================
+
+    WmoLiquid::WmoLiquid(uint32 width, uint32 height, const Vector3 &corner, uint32 type):
+        iTilesX(width), iTilesY(height), iCorner(corner), iType(type)
+    {
+        iHeight = new float[(width+1)*(height+1)];
+        iFlags = new uint8[width*height];
+    }
+
+    WmoLiquid::WmoLiquid(const WmoLiquid &other): iHeight(0), iFlags(0)
+    {
+        *this = other; // use assignment operator...
+    }
+
+    WmoLiquid::~WmoLiquid()
+    {
+        delete[] iHeight;
+        delete[] iFlags;
+    }
+
+    WmoLiquid& WmoLiquid::operator=(const WmoLiquid &other)
+    {
+        if (this == &other)
+            return *this;
+        iTilesX = other.iTilesX;
+        iTilesY = other.iTilesY;
+        iCorner = other.iCorner;
+        iType = other.iType;
+        delete iHeight;
+        delete iFlags;
+        if (other.iHeight)
+        {
+            iHeight = new float[(iTilesX+1)*(iTilesY+1)];
+            memcpy(iHeight, other.iHeight, (iTilesX+1)*(iTilesY+1)*sizeof(float));
+        }
+        else
+            iHeight = 0;
+        if (other.iFlags)
+        {
+            iFlags = new uint8[iTilesX * iTilesY];
+            memcpy(iFlags, other.iFlags, iTilesX * iTilesY);
+        }
+        else
+            iFlags = 0;
+        return *this;
+    }
+
+    bool WmoLiquid::GetLiquidHeight(const Vector3 &pos, float &liqHeight) const
+    {
+        float tx_f = (pos.x - iCorner.x)/LIQUID_TILE_SIZE;
+        uint32 tx = uint32(tx_f);
+        if (tx_f < 0.0f || tx >= iTilesX)
+            return false;
+        float ty_f = (pos.y - iCorner.y)/LIQUID_TILE_SIZE;
+        uint32 ty = uint32(ty_f);
+        if (ty_f < 0.0f || ty >= iTilesY)
+            return false;
+
+        // check if tile shall be used for liquid level
+        // checking for 0x08 *might* be enough, but disabled tiles always are 0x?F:
+        if ((iFlags[tx + ty*iTilesX] & 0x0F) == 0x0F)
+            return false;
+
+        // (dx, dy) coordinates inside tile, in [0, 1]^2
+        float dx = tx_f - (float)tx;
+        float dy = ty_f - (float)ty;
+
+        /* Tesselate tile to two triangles (not sure if client does it exactly like this)
+
+            ^ dy
+            |
+          1 x---------x (1, 1)
+            | (b)   / |
+            |     /   |
+            |   /     |
+            | /   (a) |
+            x---------x---> dx
+          0           1
+        */
+
+        const uint32 rowOffset = iTilesX + 1;
+        if (dx > dy) // case (a)
+        {
+            float sx = iHeight[tx+1 +  ty    * rowOffset] - iHeight[tx   + ty * rowOffset];
+            float sy = iHeight[tx+1 + (ty+1) * rowOffset] - iHeight[tx+1 + ty * rowOffset];
+            liqHeight = iHeight[tx + ty * rowOffset] + dx * sx + dy * sy;
+        }
+        else // case (b)
+        {
+            float sx = iHeight[tx+1 + (ty+1) * rowOffset] - iHeight[tx + (ty+1) * rowOffset];
+            float sy = iHeight[tx   + (ty+1) * rowOffset] - iHeight[tx +  ty    * rowOffset];
+            liqHeight = iHeight[tx + ty * rowOffset] + dx * sx + dy * sy;
+        }
+        return true;
+    }
+
+    uint32 WmoLiquid::GetFileSize()
+    {
+        return 2 * sizeof(uint32) +
+                sizeof(Vector3) +
+                (iTilesX + 1)*(iTilesY + 1) * sizeof(float) +
+                iTilesX * iTilesY;
+    }
+
+    bool WmoLiquid::writeToFile(FILE* wf)
+    {
+        bool result = false;
+        if (fwrite(&iTilesX, sizeof(uint32), 1, wf) == 1 &&
+            fwrite(&iTilesY, sizeof(uint32), 1, wf) == 1 &&
+            fwrite(&iCorner, sizeof(Vector3), 1, wf) == 1 &&
+            fwrite(&iType, sizeof(uint32), 1, wf) == 1)
+        {
+            uint32 size = (iTilesX + 1) * (iTilesY + 1);
+            if (fwrite(iHeight, sizeof(float), size, wf) == size)
+            {
+                size = iTilesX*iTilesY;
+                result = fwrite(iFlags, sizeof(uint8), size, wf) == size;
+            }
+        }
+
+        return result;
+    }
+
+    bool WmoLiquid::readFromFile(FILE* rf, WmoLiquid* &out)
+    {
+        bool result = false;
+        WmoLiquid* liquid = new WmoLiquid();
+
+        if (fread(&liquid->iTilesX, sizeof(uint32), 1, rf) == 1 &&
+            fread(&liquid->iTilesY, sizeof(uint32), 1, rf) == 1 &&
+            fread(&liquid->iCorner, sizeof(Vector3), 1, rf) == 1 &&
+            fread(&liquid->iType, sizeof(uint32), 1, rf) == 1)
+        {
+            uint32 size = (liquid->iTilesX + 1) * (liquid->iTilesY + 1);
+            liquid->iHeight = new float[size];
+            if (fread(liquid->iHeight, sizeof(float), size, rf) == size)
+            {
+                size = liquid->iTilesX * liquid->iTilesY;
+                liquid->iFlags = new uint8[size];
+                result = fread(liquid->iFlags, sizeof(uint8), size, rf) == size;
+            }
+        }
+
+        if (!result)
+            delete liquid;
+        else
+            out = liquid;
+
+        return result;
+    }
+
+    // ===================== GroupModel ==================================
+
+    GroupModel::GroupModel(const GroupModel &other):
+        iBound(other.iBound), iMogpFlags(other.iMogpFlags), iGroupWMOID(other.iGroupWMOID),
+        vertices(other.vertices), triangles(other.triangles), meshTree(other.meshTree), iLiquid(0)
+    {
+        if (other.iLiquid)
+            iLiquid = new WmoLiquid(*other.iLiquid);
+    }
+
+    void GroupModel::setMeshData(std::vector<Vector3> &vert, std::vector<MeshTriangle> &tri)
+    {
+        vertices.swap(vert);
+        triangles.swap(tri);
+        TriBoundFunc bFunc(vertices);
+        meshTree.build(triangles, bFunc);
+    }
+
+    bool GroupModel::writeToFile(FILE* wf)
+    {
+        bool result = true;
+        uint32 chunkSize, count;
+
+        if (result && fwrite(&iBound, sizeof(G3D::AABox), 1, wf) != 1) result = false;
+        if (result && fwrite(&iMogpFlags, sizeof(uint32), 1, wf) != 1) result = false;
+        if (result && fwrite(&iGroupWMOID, sizeof(uint32), 1, wf) != 1) result = false;
+
+        // write vertices
+        if (result && fwrite("VERT", 1, 4, wf) != 4) result = false;
+        count = vertices.size();
+        chunkSize = sizeof(uint32)+ sizeof(Vector3)*count;
+        if (result && fwrite(&chunkSize, sizeof(uint32), 1, wf) != 1) result = false;
+        if (result && fwrite(&count, sizeof(uint32), 1, wf) != 1) result = false;
+        if (!count) // models without (collision) geometry end here, unsure if they are useful
+            return result;
+        if (result && fwrite(&vertices[0], sizeof(Vector3), count, wf) != count) result = false;
+
+        // write triangle mesh
+        if (result && fwrite("TRIM", 1, 4, wf) != 4) result = false;
+        count = triangles.size();
+        chunkSize = sizeof(uint32)+ sizeof(MeshTriangle)*count;
+        if (result && fwrite(&chunkSize, sizeof(uint32), 1, wf) != 1) result = false;
+        if (result && fwrite(&count, sizeof(uint32), 1, wf) != 1) result = false;
+        if (result && fwrite(&triangles[0], sizeof(MeshTriangle), count, wf) != count) result = false;
+
+        // write mesh BIH
+        if (result && fwrite("MBIH", 1, 4, wf) != 4) result = false;
+        if (result) result = meshTree.writeToFile(wf);
+
+        // write liquid data
+        if (result && fwrite("LIQU", 1, 4, wf) != 4) result = false;
+        if (!iLiquid)
+        {
+            chunkSize = 0;
+            if (result && fwrite(&chunkSize, sizeof(uint32), 1, wf) != 1) result = false;
+            return result;
+        }
+        chunkSize = iLiquid->GetFileSize();
+        if (result && fwrite(&chunkSize, sizeof(uint32), 1, wf) != 1) result = false;
+        if (result) result = iLiquid->writeToFile(wf);
+
+        return result;
+    }
+
+    bool GroupModel::readFromFile(FILE* rf)
+    {
+        char chunk[8];
+        bool result = true;
+        uint32 chunkSize = 0;
+        uint32 count = 0;
+        triangles.clear();
+        vertices.clear();
+        delete iLiquid;
+        iLiquid = NULL;
+
+        if (result && fread(&iBound, sizeof(G3D::AABox), 1, rf) != 1) result = false;
+        if (result && fread(&iMogpFlags, sizeof(uint32), 1, rf) != 1) result = false;
+        if (result && fread(&iGroupWMOID, sizeof(uint32), 1, rf) != 1) result = false;
+
+        // read vertices
+        if (result && !readChunk(rf, chunk, "VERT", 4)) result = false;
+        if (result && fread(&chunkSize, sizeof(uint32), 1, rf) != 1) result = false;
+        if (result && fread(&count, sizeof(uint32), 1, rf) != 1) result = false;
+        if (!count) // models without (collision) geometry end here, unsure if they are useful
+            return result;
+        if (result) vertices.resize(count);
+        if (result && fread(&vertices[0], sizeof(Vector3), count, rf) != count) result = false;
+
+        // read triangle mesh
+        if (result && !readChunk(rf, chunk, "TRIM", 4)) result = false;
+        if (result && fread(&chunkSize, sizeof(uint32), 1, rf) != 1) result = false;
+        if (result && fread(&count, sizeof(uint32), 1, rf) != 1) result = false;
+        if (result) triangles.resize(count);
+        if (result && fread(&triangles[0], sizeof(MeshTriangle), count, rf) != count) result = false;
+
+        // read mesh BIH
+        if (result && !readChunk(rf, chunk, "MBIH", 4)) result = false;
+        if (result) result = meshTree.readFromFile(rf);
+
+        // write liquid data
+        if (result && !readChunk(rf, chunk, "LIQU", 4)) result = false;
+        if (result && fread(&chunkSize, sizeof(uint32), 1, rf) != 1) result = false;
+        if (result && chunkSize > 0)
+            result = WmoLiquid::readFromFile(rf, iLiquid);
+        return result;
+    }
+
+    struct GModelRayCallback
+    {
+        GModelRayCallback(const std::vector<MeshTriangle> &tris, const std::vector<Vector3> &vert):
+            vertices(vert.begin()), triangles(tris.begin()), hit(false) { }
+        bool operator()(const G3D::Ray& ray, uint32 entry, float& distance, bool /*StopAtFirstHit*/)
+        {
+            bool result = IntersectTriangle(triangles[entry], vertices, ray, distance);
+            if (result)  hit=true;
+            return hit;
+        }
+        std::vector<Vector3>::const_iterator vertices;
+        std::vector<MeshTriangle>::const_iterator triangles;
+        bool hit;
+    };
+
+    bool GroupModel::IntersectRay(const G3D::Ray &ray, float &distance, bool stopAtFirstHit) const
+    {
+        if (triangles.empty())
+            return false;
+
+        GModelRayCallback callback(triangles, vertices);
+        meshTree.intersectRay(ray, callback, distance, stopAtFirstHit);
+        return callback.hit;
+    }
+
+    bool GroupModel::IsInsideObject(const Vector3 &pos, const Vector3 &down, float &z_dist) const
+    {
+        if (triangles.empty() || !iBound.contains(pos))
+            return false;
+        GModelRayCallback callback(triangles, vertices);
+        Vector3 rPos = pos - 0.1f * down;
+        float dist = G3D::inf();
+        G3D::Ray ray(rPos, down);
+        bool hit = IntersectRay(ray, dist, false);
+        if (hit)
+            z_dist = dist - 0.1f;
+        return hit;
+    }
+
+    bool GroupModel::GetLiquidLevel(const Vector3 &pos, float &liqHeight) const
+    {
+        if (iLiquid)
+            return iLiquid->GetLiquidHeight(pos, liqHeight);
+        return false;
+    }
+
+    uint32 GroupModel::GetLiquidType() const
+    {
+        if (iLiquid)
+            return iLiquid->GetType();
+        return 0;
+    }
+
+    // ===================== WorldModel ==================================
+
+    void WorldModel::setGroupModels(std::vector<GroupModel> &models)
+    {
+        groupModels.swap(models);
+        groupTree.build(groupModels, BoundsTrait<GroupModel>::getBounds, 1);
+    }
+
+    struct WModelRayCallBack
+    {
+        WModelRayCallBack(const std::vector<GroupModel> &mod): models(mod.begin()), hit(false) { }
+        bool operator()(const G3D::Ray& ray, uint32 entry, float& distance, bool StopAtFirstHit)
+        {
+            bool result = models[entry].IntersectRay(ray, distance, StopAtFirstHit);
+            if (result)  hit=true;
+            return hit;
+        }
+        std::vector<GroupModel>::const_iterator models;
+        bool hit;
+    };
+
+    bool WorldModel::IntersectRay(const G3D::Ray &ray, float &distance, bool stopAtFirstHit) const
+    {
+        // small M2 workaround, maybe better make separate class with virtual intersection funcs
+        // in any case, there's no need to use a bound tree if we only have one submodel
+        if (groupModels.size() == 1)
+            return groupModels[0].IntersectRay(ray, distance, stopAtFirstHit);
+
+        WModelRayCallBack isc(groupModels);
+        groupTree.intersectRay(ray, isc, distance, stopAtFirstHit);
+        return isc.hit;
+    }
+
+    class WModelAreaCallback {
+        public:
+            WModelAreaCallback(const std::vector<GroupModel> &vals, const Vector3 &down):
+                prims(vals.begin()), hit(vals.end()), minVol(G3D::inf()), zDist(G3D::inf()), zVec(down) { }
+            std::vector<GroupModel>::const_iterator prims;
+            std::vector<GroupModel>::const_iterator hit;
+            float minVol;
+            float zDist;
+            Vector3 zVec;
+            void operator()(const Vector3& point, uint32 entry)
+            {
+                float group_Z;
+                //float pVol = prims[entry].GetBound().volume();
+                //if (pVol < minVol)
+                //{
+                    /* if (prims[entry].iBound.contains(point)) */
+                    if (prims[entry].IsInsideObject(point, zVec, group_Z))
+                    {
+                        //minVol = pVol;
+                        //hit = prims + entry;
+                        if (group_Z < zDist)
+                        {
+                            zDist = group_Z;
+                            hit = prims + entry;
+                        }
+#ifdef VMAP_DEBUG
+                        const GroupModel &gm = prims[entry];
+                        printf("%10u %8X %7.3f, %7.3f, %7.3f | %7.3f, %7.3f, %7.3f | z=%f, p_z=%f\n", gm.GetWmoID(), gm.GetMogpFlags(),
+                        gm.GetBound().low().x, gm.GetBound().low().y, gm.GetBound().low().z,
+                        gm.GetBound().high().x, gm.GetBound().high().y, gm.GetBound().high().z, group_Z, point.z);
+#endif
+                    }
+                //}
+                //std::cout << "trying to intersect '" << prims[entry].name << "'\n";
+            }
+    };
+
+    bool WorldModel::IntersectPoint(const G3D::Vector3 &p, const G3D::Vector3 &down, float &dist, AreaInfo &info) const
+    {
+        if (groupModels.empty())
+            return false;
+
+        WModelAreaCallback callback(groupModels, down);
+        groupTree.intersectPoint(p, callback);
+        if (callback.hit != groupModels.end())
+        {
+            info.rootId = RootWMOID;
+            info.groupId = callback.hit->GetWmoID();
+            info.flags = callback.hit->GetMogpFlags();
+            info.result = true;
+            dist = callback.zDist;
+            return true;
+        }
+        return false;
+    }
+
+    bool WorldModel::GetLocationInfo(const G3D::Vector3 &p, const G3D::Vector3 &down, float &dist, LocationInfo &info) const
+    {
+        if (groupModels.empty())
+            return false;
+
+        WModelAreaCallback callback(groupModels, down);
+        groupTree.intersectPoint(p, callback);
+        if (callback.hit != groupModels.end())
+        {
+            info.hitModel = &(*callback.hit);
+            dist = callback.zDist;
+            return true;
+        }
+        return false;
+    }
+
+    bool WorldModel::writeFile(const std::string &filename)
+    {
+        FILE* wf = fopen(filename.c_str(), "wb");
+        if (!wf)
+            return false;
+
+        uint32 chunkSize, count;
+        bool result = fwrite(VMAP_MAGIC, 1, 8, wf) == 8;
+        if (result && fwrite("WMOD", 1, 4, wf) != 4) result = false;
+        chunkSize = sizeof(uint32) + sizeof(uint32);
+        if (result && fwrite(&chunkSize, sizeof(uint32), 1, wf) != 1) result = false;
+        if (result && fwrite(&RootWMOID, sizeof(uint32), 1, wf) != 1) result = false;
+
+        // write group models
+        count=groupModels.size();
+        if (count)
+        {
+            if (result && fwrite("GMOD", 1, 4, wf) != 4) result = false;
+            //chunkSize = sizeof(uint32)+ sizeof(GroupModel)*count;
+            //if (result && fwrite(&chunkSize, sizeof(uint32), 1, wf) != 1) result = false;
+            if (result && fwrite(&count, sizeof(uint32), 1, wf) != 1) result = false;
+            for (uint32 i=0; i<groupModels.size() && result; ++i)
+                result = groupModels[i].writeToFile(wf);
+
+            // write group BIH
+            if (result && fwrite("GBIH", 1, 4, wf) != 4) result = false;
+            if (result) result = groupTree.writeToFile(wf);
+        }
+
+        fclose(wf);
+        return result;
+    }
+
+    bool WorldModel::readFile(const std::string &filename)
+    {
+        FILE* rf = fopen(filename.c_str(), "rb");
+        if (!rf)
+            return false;
+
+        bool result = true;
+        uint32 chunkSize = 0;
+        uint32 count = 0;
+        char chunk[8];                          // Ignore the added magic header
+        if (!readChunk(rf, chunk, VMAP_MAGIC, 8)) result = false;
+
+        if (result && !readChunk(rf, chunk, "WMOD", 4)) result = false;
+        if (result && fread(&chunkSize, sizeof(uint32), 1, rf) != 1) result = false;
+        if (result && fread(&RootWMOID, sizeof(uint32), 1, rf) != 1) result = false;
+
+        // read group models
+        if (result && readChunk(rf, chunk, "GMOD", 4))
+        {
+            //if (fread(&chunkSize, sizeof(uint32), 1, rf) != 1) result = false;
+
+            if (result && fread(&count, sizeof(uint32), 1, rf) != 1) result = false;
+            if (result) groupModels.resize(count);
+            //if (result && fread(&groupModels[0], sizeof(GroupModel), count, rf) != count) result = false;
+            for (uint32 i=0; i<count && result; ++i)
+                result = groupModels[i].readFromFile(rf);
+
+            // read group BIH
+            if (result && !readChunk(rf, chunk, "GBIH", 4)) result = false;
+            if (result) result = groupTree.readFromFile(rf);
+        }
+
+        fclose(rf);
+        return result;
+    }
+}

modules/worldengine/lib-collision/src/Models/WorldModel.h

@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2016+     AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license: http://github.com/azerothcore/azerothcore-wotlk/LICENSE-GPL2
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ */
+
+#ifndef _WORLDMODEL_H
+#define _WORLDMODEL_H
+
+#include <G3D/HashTrait.h>
+#include <G3D/Vector3.h>
+#include <G3D/AABox.h>
+#include <G3D/Ray.h>
+#include "BoundingIntervalHierarchy.h"
+
+#include "Define.h"
+
+namespace VMAP
+{
+    class TreeNode;
+    struct AreaInfo;
+    struct LocationInfo;
+
+    class MeshTriangle
+    {
+        public:
+            MeshTriangle() : idx0(0), idx1(0), idx2(0) { }
+            MeshTriangle(uint32 na, uint32 nb, uint32 nc): idx0(na), idx1(nb), idx2(nc) { }
+
+            uint32 idx0;
+            uint32 idx1;
+            uint32 idx2;
+    };
+
+    class WmoLiquid
+    {
+        public:
+            WmoLiquid(uint32 width, uint32 height, const G3D::Vector3 &corner, uint32 type);
+            WmoLiquid(const WmoLiquid &other);
+            ~WmoLiquid();
+            WmoLiquid& operator=(const WmoLiquid &other);
+            bool GetLiquidHeight(const G3D::Vector3 &pos, float &liqHeight) const;
+            uint32 GetType() const { return iType; }
+            float *GetHeightStorage() { return iHeight; }
+            uint8 *GetFlagsStorage() { return iFlags; }
+            uint32 GetFileSize();
+            bool writeToFile(FILE* wf);
+            static bool readFromFile(FILE* rf, WmoLiquid* &liquid);
+        private:
+            WmoLiquid(): iTilesX(0), iTilesY(0), iType(0), iHeight(0), iFlags(0) { }
+            uint32 iTilesX;       //!< number of tiles in x direction, each
+            uint32 iTilesY;
+            G3D::Vector3 iCorner; //!< the lower corner
+            uint32 iType;         //!< liquid type
+            float *iHeight;       //!< (tilesX + 1)*(tilesY + 1) height values
+            uint8 *iFlags;        //!< info if liquid tile is used
+        public:
+            void getPosInfo(uint32 &tilesX, uint32 &tilesY, G3D::Vector3 &corner) const;
+    };
+
+    /*! holding additional info for WMO group files */
+    class GroupModel
+    {
+        public:
+            GroupModel(): iMogpFlags(0), iGroupWMOID(0), iLiquid(0) { }
+            GroupModel(const GroupModel &other);
+            GroupModel(uint32 mogpFlags, uint32 groupWMOID, const G3D::AABox &bound):
+                        iBound(bound), iMogpFlags(mogpFlags), iGroupWMOID(groupWMOID), iLiquid(0) { }
+            ~GroupModel() { delete iLiquid; }
+
+            //! pass mesh data to object and create BIH. Passed vectors get get swapped with old geometry!
+            void setMeshData(std::vector<G3D::Vector3> &vert, std::vector<MeshTriangle> &tri);
+            void setLiquidData(WmoLiquid*& liquid) { iLiquid = liquid; liquid = NULL; }
+            bool IntersectRay(const G3D::Ray &ray, float &distance, bool stopAtFirstHit) const;
+            bool IsInsideObject(const G3D::Vector3 &pos, const G3D::Vector3 &down, float &z_dist) const;
+            bool GetLiquidLevel(const G3D::Vector3 &pos, float &liqHeight) const;
+            uint32 GetLiquidType() const;
+            bool writeToFile(FILE* wf);
+            bool readFromFile(FILE* rf);
+            const G3D::AABox& GetBound() const { return iBound; }
+            uint32 GetMogpFlags() const { return iMogpFlags; }
+            uint32 GetWmoID() const { return iGroupWMOID; }
+        protected:
+            G3D::AABox iBound;
+            uint32 iMogpFlags;// 0x8 outdor; 0x2000 indoor
+            uint32 iGroupWMOID;
+            std::vector<G3D::Vector3> vertices;
+            std::vector<MeshTriangle> triangles;
+            BIH meshTree;
+            WmoLiquid* iLiquid;
+        public:
+            void getMeshData(std::vector<G3D::Vector3> &vertices, std::vector<MeshTriangle> &triangles, WmoLiquid* &liquid);
+    };
+    /*! Holds a model (converted M2 or WMO) in its original coordinate space */
+    class WorldModel
+    {
+        public:
+            WorldModel(): RootWMOID(0) { }
+
+            //! pass group models to WorldModel and create BIH. Passed vector is swapped with old geometry!
+            void setGroupModels(std::vector<GroupModel> &models);
+            void setRootWmoID(uint32 id) { RootWMOID = id; }
+            bool IntersectRay(const G3D::Ray &ray, float &distance, bool stopAtFirstHit) const;
+            bool IntersectPoint(const G3D::Vector3 &p, const G3D::Vector3 &down, float &dist, AreaInfo &info) const;
+            bool GetLocationInfo(const G3D::Vector3 &p, const G3D::Vector3 &down, float &dist, LocationInfo &info) const;
+            bool writeFile(const std::string &filename);
+            bool readFile(const std::string &filename);
+        protected:
+            uint32 RootWMOID;
+            std::vector<GroupModel> groupModels;
+            BIH groupTree;
+        public:
+            void getGroupModels(std::vector<GroupModel> &groupModels);
+    };
+} // namespace VMAP
+
+#endif // _WORLDMODEL_H