fix(Core/Movement): (#7008)

- Get zone/area IDs from vmap data in the liquid update
- Add new method Map::getFullVMapDataForPosition to get area info and liquid info in a single vmap lookup
- Adjust GetZoneId/GetAreaId on WorldObject to always return these cached fields.
- Clean up liquid state handling on Unit and Player
- Implemented getting area id from gameobject spawns.
- Removed old core related to getting movement flags dependent on environment.
- Movement flags are now processed more precisely and dynamically.

Original source: TrinityCore.

- Closes #5086
- Updates #2208.

src/common/Collision/DynamicTree.cpp

@@ -8,9 +8,14 @@
 #include "BoundingIntervalHierarchyWrapper.h"
 #include "GameObjectModel.h"
 #include "Log.h"
+#include "MapTree.h"
 #include "ModelInstance.h"
 #include "RegularGrid.h"
 #include "Timer.h"
+#include "VMapFactory.h"
+#include "VMapManager2.h"
+#include "WorldModel.h"
+
 #include <G3D/AABox.h>
 #include <G3D/Ray.h>
 #include <G3D/Vector3.h>
@@ -145,6 +150,52 @@ struct DynamicTreeIntersectionCallback
     bool didHit() const { return did_hit;}
 };
 
+struct DynamicTreeAreaInfoCallback
+{
+    DynamicTreeAreaInfoCallback(uint32 phaseMask)
+        : _phaseMask(phaseMask) {}
+
+    void operator()(G3D::Vector3 const& p, GameObjectModel const& obj)
+    {
+        obj.IntersectPoint(p, _areaInfo, _phaseMask);
+    }
+
+    VMAP::AreaInfo const& GetAreaInfo() const
+    {
+        return _areaInfo;
+    }
+
+private:
+    uint32         _phaseMask;
+    VMAP::AreaInfo _areaInfo;
+};
+
+struct DynamicTreeLocationInfoCallback
+{
+    DynamicTreeLocationInfoCallback(uint32 phaseMask)
+        : _phaseMask(phaseMask), _hitModel(nullptr) {}
+
+    void operator()(G3D::Vector3 const& p, GameObjectModel const& obj)
+    {
+        if (obj.GetLocationInfo(p, _locationInfo, _phaseMask))
+            _hitModel = &obj;
+    }
+
+    VMAP::LocationInfo& GetLocationInfo()
+    {
+        return _locationInfo;
+    }
+    GameObjectModel const* GetHitModel() const
+    {
+        return _hitModel;
+    }
+
+private:
+    uint32                 _phaseMask;
+    VMAP::LocationInfo     _locationInfo;
+    GameObjectModel const* _hitModel;
+};
+
 bool DynamicMapTree::GetIntersectionTime(const uint32 phasemask, const G3D::Ray& ray,
         const G3D::Vector3& endPos, float& maxDist) const
 {
@@ -238,3 +289,41 @@ float DynamicMapTree::getHeight(float x, float y, float z, float maxSearchDist,
         return -G3D::finf();
     }
 }
+
+bool DynamicMapTree::GetAreaInfo(float x, float y, float& z, uint32 phasemask, uint32& flags, int32& adtId, int32& rootId, int32& groupId) const
+{
+    G3D::Vector3 v(x, y, z + 0.5f);
+    DynamicTreeAreaInfoCallback intersectionCallBack(phasemask);
+    impl->intersectPoint(v, intersectionCallBack);
+    if (intersectionCallBack.GetAreaInfo().result)
+    {
+        flags = intersectionCallBack.GetAreaInfo().flags;
+        adtId = intersectionCallBack.GetAreaInfo().adtId;
+        rootId = intersectionCallBack.GetAreaInfo().rootId;
+        groupId = intersectionCallBack.GetAreaInfo().groupId;
+        z = intersectionCallBack.GetAreaInfo().ground_Z;
+        return true;
+    }
+    return false;
+}
+
+void DynamicMapTree::GetAreaAndLiquidData(float x, float y, float z, uint32 phasemask, uint8 reqLiquidType, VMAP::AreaAndLiquidData& data) const
+{
+    G3D::Vector3 v(x, y, z + 0.5f);
+    DynamicTreeLocationInfoCallback intersectionCallBack(phasemask);
+    impl->intersectPoint(v, intersectionCallBack);
+    if (intersectionCallBack.GetLocationInfo().hitModel)
+    {
+        data.floorZ = intersectionCallBack.GetLocationInfo().ground_Z;
+        uint32 liquidType = intersectionCallBack.GetLocationInfo().hitModel->GetLiquidType();
+        float liquidLevel;
+        if (!reqLiquidType || (dynamic_cast<VMAP::VMapManager2*>(VMAP::VMapFactory::createOrGetVMapManager())->GetLiquidFlagsPtr(liquidType) & reqLiquidType))
+            if (intersectionCallBack.GetHitModel()->GetLiquidLevel(v, intersectionCallBack.GetLocationInfo(), liquidLevel))
+                data.liquidInfo.emplace(liquidType, liquidLevel);
+
+        data.areaInfo.emplace(0,
+            intersectionCallBack.GetLocationInfo().rootId,
+            intersectionCallBack.GetLocationInfo().hitModel->GetWmoID(),
+            intersectionCallBack.GetLocationInfo().hitModel->GetMogpFlags());
+    }
+}