[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/Models/WorldModel.cpp b/src/common/Collision/Models/WorldModel.cpp
index 19b40b6de18..d04bcf4d241 100644
--- a/src/common/Collision/Models/WorldModel.cpp
+++ b/src/common/Collision/Models/WorldModel.cpp
@@ -531,6 +531,7 @@ namespace VMAP
         groupTree.intersectPoint(p, callback);
         if (callback.hit != groupModels.end())
         {
+            info.rootId = RootWMOID;
             info.hitModel = &(*callback.hit);
             dist = callback.zDist;
             return true;