Improve AdventureBot travel recovery and destination eligibility

src/server/game/World/AdventureSocialActions.cpp

@@ -1,3 +1,4 @@
+#include "ClientlessPositioning.h"
 #include "AdventureSocialActions.h"
 #include "AdventureLocationMgr.h"
 #include "AdventureEconomyPolicy.h"
@@ -167,12 +168,14 @@ namespace
     bool Approach(Player* player,AdventureSocialScene& scene,WorldObject* target,AdventureSocialContext& c)
     {
         if(!InBounds(player,target,c))return false;
+        Position crowded;bool hasCrowded=false,already=false;
         if(player->GetExactDist(target)<=3.8f && (scene.Kind=="work_skinning" || AtFront(player,target)) &&
             ((AdventureEconomyPolicy::Economic(scene.Kind) || AdventureProfessionPolicy::Recognized(scene.Kind))?TargetVisible(player,target,scene.Kind):
              player->IsWithinLOS(target->GetPositionX(),target->GetPositionY(),target->GetPositionZ()+1.5f)))
         {
-            scene.Approaching=false;
-            return true;
+            already=true;
+            if(ClientlessPositioning::Clearance(player,*player)>=1.1f)
+            {scene.Approaching=false;return true;}
         }
         // People are approached in front of their actual facing, not from the
         // bot's current bearing. Furniture may still be reached from any side.
@@ -191,9 +194,15 @@ namespace
             if(!player->GetMap()->isInLineOfSight(player->GetPhaseShift(),p.GetPositionX(),p.GetPositionY(),floor+((AdventureEconomyPolicy::Economic(scene.Kind) || AdventureProfessionPolicy::Recognized(scene.Kind))?player->GetCollisionHeight():1.5f),
                 target->GetPositionX(),target->GetPositionY(),target->GetPositionZ()+(AdventureProfessionPolicy::Recognized(scene.Kind) && target->ToGameObject()?std::max(1.5f,target->GetCollisionHeight()):AdventureEconomyPolicy::Economic(scene.Kind)?target->GetCollisionHeight():1.5f),
                 LINEOFSIGHT_ALL_CHECKS,VMAP::ModelIgnoreFlags::Nothing))continue;
+            if(ClientlessPositioning::Clearance(player,p)<1.1f)
+            {if(!hasCrowded){crowded=p;hasCrowded=true;}continue;}
             if(!c.Move(p,(AdventureEconomyPolicy::Economic(scene.Kind) || AdventureExplorationPolicy::Inspection(scene.Kind) || AdventureProfessionPolicy::Recognized(scene.Kind))?350:55))continue;
+            ClientlessPositioning::Reserve(player,p);
             scene.Destination=p;scene.Approaching=true;return true;
         }
+        if(already){scene.Approaching=false;return true;}
+        if(hasCrowded && c.Move(crowded,(AdventureEconomyPolicy::Economic(scene.Kind) || AdventureExplorationPolicy::Inspection(scene.Kind) || AdventureProfessionPolicy::Recognized(scene.Kind))?350:55))
+        {scene.Destination=crowded;scene.Approaching=true;return true;}
         return false;
     }
     bool OnChair(Player* player,GameObject* chair,float& error)