[3.3.5] Get zone/area IDs from vmap data in the liquid update (#19840)

* Add new method Map::getFullVMapDataForPosition to get area info and liquid info in a single vmap lookup
* Use this lookup in Map:: relocation methods to update m_areaId and m_zoneId fields on WorldObject
* Adjust GetZoneId/GetAreaId on WorldObject to always return these cached fields
* Clean up liquid state handling on Unit and Player
* Hand floor's Z coord up through GetFullTerrainStatusForPosition, use it to update a new field in WorldObject, and use that to feed a new GetFloorZ call on WorldObject.

Closes #16489

1 files changed, 1 insertions, 0 deletions

diff --git a/src/common/Collision/Maps/MapTree.h b/src/common/Collision/Maps/MapTree.h
index f5c11dd2bce..bc18e07789b 100644
--- a/src/common/Collision/Maps/MapTree.h
+++ b/src/common/Collision/Maps/MapTree.h
@@ -35,6 +35,7 @@ namespace VMAP
     struct TC_COMMON_API LocationInfo
     {
         LocationInfo(): hitInstance(nullptr), hitModel(nullptr), ground_Z(-G3D::finf()) { }
+        int32 rootId;
         const ModelInstance* hitInstance;
         const GroupModel* hitModel;
         float ground_Z;