Fixes alot of little errors.

Source/Game/AI/AISelector.cs

@@ -72,7 +72,7 @@ namespace Game.AI
             else if (creature.IsCritter() && !creature.HasUnitTypeMask(UnitTypeMask.Guardian))
                 return new CritterAI(creature);
 
-            if (creature.IsCivilian() && !creature.IsNeutralToAll())
+            if (!creature.IsCivilian() && !creature.IsNeutralToAll())
                 return new AggressorAI(creature);
 
             if (creature.IsCivilian() || creature.IsNeutralToAll())

Source/Game/BattleFields/BattleField.cs

@@ -487,7 +487,7 @@ namespace Game.BattleFields
             creature.SetVisible(true);
             creature.RemoveUnitFlag(UnitFlags.NonAttackable);
             creature.SetUninteractible(false);
-            if (creature.IsAlive())
+            if (!creature.IsAlive())
                 creature.Respawn(true);
             if (aggressive)
                 creature.SetReactState(ReactStates.Aggressive);

Source/Game/Conditions/ConditionManager.cs

@@ -3066,6 +3066,9 @@ namespace Game
 
         public bool IsEmpty()
         {
+            if (Conditions == null)
+                return true;
+
             return Conditions.Empty();
         }
     }

Source/Game/Entities/Creature/Creature.cs

@@ -777,7 +777,7 @@ namespace Game.Entities
                 lowGuid = map.GenerateLowGuid(HighGuid.Creature);
 
             Creature creature = new();
-            if (creature.Create(lowGuid, map, entry, pos, null, vehId))
+            if (!creature.Create(lowGuid, map, entry, pos, null, vehId))
                 return null;
 
             return creature;
@@ -786,7 +786,7 @@ namespace Game.Entities
         public static Creature CreateCreatureFromDB(ulong spawnId, Map map, bool addToMap = true, bool allowDuplicate = false)
         {
             Creature creature = new();
-            if (creature.LoadFromDB(spawnId, map, addToMap, allowDuplicate))
+            if (!creature.LoadFromDB(spawnId, map, addToMap, allowDuplicate))
                 return null;
 
             return creature;

Source/Game/Entities/Player/Player.Spells.cs

@@ -255,7 +255,7 @@ namespace Game.Entities
 
         public bool CanSeeSpellClickOn(Creature creature)
         {
-            if (creature.HasNpcFlag(NPCFlags.SpellClick))
+            if (!creature.HasNpcFlag(NPCFlags.SpellClick))
                 return false;
 
             var clickBounds = Global.ObjectMgr.GetSpellClickInfoMapBounds(creature.GetEntry());

Source/Game/Entities/Player/Player.cs

@@ -2613,13 +2613,13 @@ namespace Game.Entities
                                 canTalk = false;
                             break;
                         case GossipOptionNpc.Battlemaster:
-                            if (creature.CanInteractWithBattleMaster(this, false))
+                            if (!creature.CanInteractWithBattleMaster(this, false))
                                 canTalk = false;
                             break;
                         case GossipOptionNpc.TalentMaster:
                         case GossipOptionNpc.SpecializationMaster:
                         case GossipOptionNpc.GlyphMaster:
-                            if (creature.CanResetTalents(this))
+                            if (!creature.CanResetTalents(this))
                                 canTalk = false;
                             break;
                         case GossipOptionNpc.Stablemaster:
@@ -3435,7 +3435,7 @@ namespace Game.Entities
 
         public bool IsAllowedToLoot(Creature creature)
         {
-            if (creature.IsDead())
+            if (!creature.IsDead())
                 return false;
 
             if (HasPendingBind())
@@ -4303,7 +4303,7 @@ namespace Game.Entities
                 return;
             }
 
-            if (creature.IsAreaSpiritHealer())
+            if (!creature.IsAreaSpiritHealer())
                 return;
 
             _areaSpiritHealerGUID = creature.GetGUID();

Source/Game/Entities/Transport.cs

@@ -377,7 +377,7 @@ namespace Game.Entities
             //         because the current GameObjectModel cannot be moved without recreating
             creature.AddUnitState(UnitState.IgnorePathfinding);
 
-            if (creature.IsPositionValid())
+            if (!creature.IsPositionValid())
             {
                 Log.outError(LogFilter.Transport, "Creature (guidlow {0}, entry {1}) not created. Suggested coordinates aren't valid (X: {2} Y: {3})", creature.GetGUID().ToString(), creature.GetEntry(), creature.GetPositionX(), creature.GetPositionY());
                 return null;

Source/Game/Entities/Unit/Unit.Combat.cs

@@ -1031,10 +1031,10 @@ namespace Game.Entities
             {
                 Log.outDebug(LogFilter.Unit, "DealDamageNotPlayer");
 
-                if (creature.IsPet())
+                if (!creature.IsPet())
                 {
                     // must be after setDeathState which resets dynamic flags
-                    if (creature.IsFullyLooted())
+                    if (!creature.IsFullyLooted())
                         creature.SetDynamicFlag(UnitDynFlags.Lootable);
                     else
                         creature.AllLootRemovedFromCorpse();

Source/Game/Handlers/LootHandler.cs

@@ -53,7 +53,7 @@ namespace Game
                         continue;
                     }
 
-                    if (creature.IsWithinDistInMap(player, AELootCreatureCheck.LootDistance))
+                    if (!creature.IsWithinDistInMap(player, AELootCreatureCheck.LootDistance))
                     {
                         player.SendLootError(req.Object, lguid, LootError.TooFar);
                         continue;
@@ -359,7 +359,7 @@ namespace Game
                         creature.RemoveDynamicFlag(UnitDynFlags.Lootable);
 
                         // skip pickpocketing loot for speed, skinning timer reduction is no-op in fact
-                        if (creature.IsAlive())
+                        if (!creature.IsAlive())
                             creature.AllLootRemovedFromCorpse();
                     }
                 }

Source/Game/Maps/GridNotifiers.cs

@@ -275,7 +275,7 @@ namespace Game.Maps
                 Creature creature = objs[i];
                 CreatureUnitRelocationWorker(i_creature, creature);
 
-                if (creature.IsNeedNotify(NotifyFlags.VisibilityChanged))
+                if (!creature.IsNeedNotify(NotifyFlags.VisibilityChanged))
                     CreatureUnitRelocationWorker(creature, i_creature);
             }
         }
@@ -318,7 +318,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.IsNeedNotify(NotifyFlags.VisibilityChanged))
+                if (!creature.IsNeedNotify(NotifyFlags.VisibilityChanged))
                     continue;
 
                 CreatureRelocationNotifier relocate = new(creature);
@@ -450,7 +450,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.InSamePhase(i_phaseShift))
+                if (!creature.InSamePhase(i_phaseShift))
                     continue;
 
                 if ((!required3dDist ? creature.GetExactDist2dSq(i_source) : creature.GetExactDistSq(i_source)) > i_distSq)
@@ -545,7 +545,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.InSamePhase(i_phaseShift))
+                if (!creature.InSamePhase(i_phaseShift))
                     continue;
 
                 if (creature.GetExactDist2dSq(i_source) > i_distSq)
@@ -850,7 +850,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.GetSharedVisionList().Empty())
+                if (!creature.GetSharedVisionList().Empty())
                 {
                     foreach (var visionPlayer in creature.GetSharedVisionList())
                         BuildPacket(visionPlayer);
@@ -1070,7 +1070,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.InSamePhase(i_phaseShift))
+                if (!creature.InSamePhase(i_phaseShift))
                     continue;
 
                 if (i_check.Invoke(creature))
@@ -1253,7 +1253,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.InSamePhase(i_phaseShift))
+                if (!creature.InSamePhase(i_phaseShift))
                     continue;
 
                 if (i_check.Invoke(creature))
@@ -1585,7 +1585,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.InSamePhase(i_phaseShift))
+                if (!creature.InSamePhase(i_phaseShift))
                     continue;
 
                 if (i_check.Invoke(creature))
@@ -1629,7 +1629,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.InSamePhase(i_phaseShift))
+                if (!creature.InSamePhase(i_phaseShift))
                     continue;
 
                 if (i_check.Invoke(creature))
@@ -1697,7 +1697,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.InSamePhase(i_phaseShift))
+                if (!creature.InSamePhase(i_phaseShift))
                     continue;
 
                 if (i_check.Invoke(creature))
@@ -1728,7 +1728,7 @@ namespace Game.Maps
             for (var i = 0; i < objs.Count; ++i)
             {
                 Creature creature = objs[i];
-                if (creature.InSamePhase(i_phaseShift))
+                if (!creature.InSamePhase(i_phaseShift))
                     continue;
 
                 if (i_check.Invoke(creature))

Source/Game/Maps/Map.cs

@@ -1193,7 +1193,7 @@ namespace Game.Maps
                 {
                     // if creature can't be move in new cell/grid (not loaded) move it to repawn cell/grid
                     // creature coordinates will be updated and notifiers send
-                    if (CreatureRespawnRelocation(creature, false))
+                    if (!CreatureRespawnRelocation(creature, false))
                     {
                         // ... or unload (if respawn grid also not loaded)
                         //This may happen when a player just logs in and a pet moves to a nearby unloaded cell