Core/SmartAI: Add actions SMART_ACTION_LEAVE_VEHICLE and SMART_ACTION_REMOVE_PASSENGERS.

Fix maxdist for SMART_TARGET_CLOSEST_PLAYER.

src/server/game/AI/SmartScripts/SmartScript.cpp

@@ -1470,9 +1470,56 @@ void SmartScript::ProcessAction(SmartScriptHolder& e, Unit* unit, uint32 var0, u
 
             for (ObjectList::iterator itr = targets->begin(); itr != targets->end(); ++itr)
             {
-                if (IsUnit(*itr) && (*itr)->ToUnit()->GetVehicleKit())
+                if (Unit* target = (*itr)->ToUnit())
                 {
-                    me->EnterVehicle((*itr)->ToUnit(), e.action.enterVehicle.seat);
+                    if (target->GetVehicleKit())
+                    {
+                        me->EnterVehicle(target, e.action.enterVehicle.seat);
+                        delete targets;
+                        return;
+                    }
+                }
+            }
+
+            delete targets;
+            break;
+        }
+        case SMART_ACTION_LEAVE_VEHICLE:
+        {
+            ObjectList* targets = GetTargets(e, unit);
+            if (!targets)
+                return;
+
+            for (ObjectList::iterator itr = targets->begin(); itr != targets->end(); ++itr)
+            {
+                if (Unit* target = (*itr)->ToUnit())
+                {
+                    if (!target->GetVehicle())
+                        continue;
+
+                    target->ExitVehicle();
+                    delete targets;
+                    return;
+                }
+            }
+
+            delete targets;
+            break;
+        }
+        case SMART_ACTION_REMOVE_PASSENGERS:
+        {
+            ObjectList* targets = GetTargets(e, unit);
+            if (!targets)
+                return;
+
+            for (ObjectList::iterator itr = targets->begin(); itr != targets->end(); ++itr)
+            {
+                if (!IsUnit(*itr))
+                    continue;
+    
+                if (Vehicle* veh = (*itr)->ToUnit()->GetVehicle())
+                {
+                    veh->RemoveAllPassengers();
                     delete targets;
                     return;
                 }
@@ -2155,7 +2202,7 @@ ObjectList* SmartScript::GetTargets(SmartScriptHolder const& e, Unit* invoker /*
         {
             if (me)
             {
-                Player* target = me->SelectNearestPlayer((float)(e.target.closest.dist ? e.target.closest.dist : 100));
+                Player* target = me->SelectNearestPlayer((float)e.target.playerDistance.dist);
                 if (target)
                     l->push_back(target);
             }

src/server/game/AI/SmartScripts/SmartScriptMgr.cpp

@@ -758,6 +758,8 @@ bool SmartAIMgr::IsEventValid(SmartScriptHolder& e)
         case SMART_ACTION_ACTIVATE_GOBJECT:
         case SMART_ACTION_CALL_SCRIPT_RESET:
         case SMART_ACTION_ENTER_VEHICLE:
+        case SMART_ACTION_LEAVE_VEHICLE:
+        case SMART_ACTION_REMOVE_PASSENGERS:
         case SMART_ACTION_NONE:
         case SMART_ACTION_CALL_TIMED_ACTIONLIST:
         case SMART_ACTION_SET_NPC_FLAG:

src/server/game/AI/SmartScripts/SmartScriptMgr.h

@@ -459,8 +459,10 @@ enum SMART_ACTION
     SMART_ACTION_REMOVE_DYNAMIC_FLAG                = 96,     // Flags
     SMART_ACTION_JUMP_TO_POS                        = 97,     // speedXY, speedZ, targetX, targetY, targetZ
     SMART_ACTION_SEND_GOSSIP_MENU                   = 98,     // menuId, optionId
+    SMART_ACTION_LEAVE_VEHICLE                      = 99,
+    SMART_ACTION_REMOVE_PASSENGERS                  = 100,
 
-    SMART_ACTION_END                                = 99,
+    SMART_ACTION_END                                = 101,
 };
 
 struct SmartAction