Some cleanups. (might break build for scripts as they are a WIP)

Source/Game/Handlers/ArtifactHandler.cs

@@ -16,11 +16,11 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.ArtifactAddPower, Processing = PacketProcessing.Inplace)]
         void HandleArtifactAddPower(ArtifactAddPower artifactAddPower)
         {
-            if (!_player.GetGameObjectIfCanInteractWith(artifactAddPower.ForgeGUID, GameObjectTypes.ItemForge))
+            if (_player.GetGameObjectIfCanInteractWith(artifactAddPower.ForgeGUID, GameObjectTypes.ItemForge) == null)
                 return;
 
             Item artifact = _player.GetItemByGuid(artifactAddPower.ArtifactGUID);
-            if (!artifact || artifact.IsArtifactDisabled())
+            if (artifact == null || artifact.IsArtifactDisabled())
                 return;
 
             uint currentArtifactTier = artifact.GetModifier(ItemModifier.ArtifactTier);
@@ -146,7 +146,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.ArtifactSetAppearance, Processing = PacketProcessing.Inplace)]
         void HandleArtifactSetAppearance(ArtifactSetAppearance artifactSetAppearance)
         {
-            if (!_player.GetGameObjectIfCanInteractWith(artifactSetAppearance.ForgeGUID, GameObjectTypes.ItemForge))
+            if (_player.GetGameObjectIfCanInteractWith(artifactSetAppearance.ForgeGUID, GameObjectTypes.ItemForge) == null)
                 return;
 
             ArtifactAppearanceRecord artifactAppearance = CliDB.ArtifactAppearanceStorage.LookupByKey(artifactSetAppearance.ArtifactAppearanceID);
@@ -154,7 +154,7 @@ namespace Game
                 return;
 
             Item artifact = _player.GetItemByGuid(artifactSetAppearance.ArtifactGUID);
-            if (!artifact)
+            if (artifact == null)
                 return;
 
             ArtifactAppearanceSetRecord artifactAppearanceSet = CliDB.ArtifactAppearanceSetStorage.LookupByKey(artifactAppearance.ArtifactAppearanceSetID);
@@ -170,7 +170,7 @@ namespace Game
             artifact.SetModifier(ItemModifier.ArtifactAppearanceId, artifactAppearance.Id);
             artifact.SetState(ItemUpdateState.Changed, _player);
             Item childItem = _player.GetChildItemByGuid(artifact.GetChildItem());
-            if (childItem)
+            if (childItem != null)
             {
                 childItem.SetAppearanceModId(artifactAppearance.ItemAppearanceModifierID);
                 childItem.SetState(ItemUpdateState.Changed, _player);
@@ -180,7 +180,7 @@ namespace Game
             {
                 // change weapon appearance
                 _player.SetVisibleItemSlot(artifact.GetSlot(), artifact);
-                if (childItem)
+                if (childItem != null)
                     _player.SetVisibleItemSlot(childItem.GetSlot(), childItem);
 
                 // change druid form appearance
@@ -192,11 +192,11 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.ConfirmArtifactRespec)]
         void HandleConfirmArtifactRespec(ConfirmArtifactRespec confirmArtifactRespec)
         {
-            if (!_player.GetNPCIfCanInteractWith(confirmArtifactRespec.NpcGUID, NPCFlags.ArtifactPowerRespec, NPCFlags2.None))
+            if (_player.GetNPCIfCanInteractWith(confirmArtifactRespec.NpcGUID, NPCFlags.ArtifactPowerRespec, NPCFlags2.None) == null)
                 return;
 
             Item artifact = _player.GetItemByGuid(confirmArtifactRespec.ArtifactGUID);
-            if (!artifact || artifact.IsArtifactDisabled())
+            if (artifact == null || artifact.IsArtifactDisabled())
                 return;
 
             ulong xpCost = 0;

Source/Game/Handlers/AuctionHandler.cs

@@ -120,7 +120,7 @@ namespace Game
                 var buyerGuid = _player.GetGUID();
                 AddTransactionCallback(DB.Characters.AsyncCommitTransaction(trans)).AfterComplete(success =>
                 {
-                    if (GetPlayer() && GetPlayer().GetGUID() == buyerGuid)
+                    if (GetPlayer() != null && GetPlayer().GetGUID() == buyerGuid)
                     {
                         if (success)
                         {
@@ -138,7 +138,7 @@ namespace Game
         void HandleAuctionHello(AuctionHelloRequest hello)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(hello.Guid, NPCFlags.Auctioneer, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, $"WORLD: HandleAuctionHelloOpcode - {hello.Guid} not found or you can't interact with him.");
                 return;
@@ -159,7 +159,7 @@ namespace Game
                 return;
 
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(listBiddedItems.Auctioneer, NPCFlags.Auctioneer, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outDebug(LogFilter.Network, $"WORLD: HandleAuctionListBidderItems - {listBiddedItems.Auctioneer} not found or you can't interact with him.");
                 return;
@@ -282,7 +282,7 @@ namespace Game
                 return;
 
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(listOwnedItems.Auctioneer, NPCFlags.Auctioneer, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outDebug(LogFilter.Network, $"WORLD: HandleAuctionListOwnerItems - {listOwnedItems.Auctioneer} not found or you can't interact with him.");
                 return;
@@ -309,7 +309,7 @@ namespace Game
                 return;
 
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(placeBid.Auctioneer, NPCFlags.Auctioneer, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outDebug(LogFilter.Network, $"WORLD: HandleAuctionPlaceBid - {placeBid.Auctioneer} not found or you can't interact with him.");
                 return;
@@ -423,7 +423,7 @@ namespace Game
             player.SaveInventoryAndGoldToDB(trans);
             AddTransactionCallback(DB.Characters.AsyncCommitTransaction(trans)).AfterComplete(success =>
             {
-                if (GetPlayer() && GetPlayer().GetGUID() == _player.GetGUID())
+                if (GetPlayer() != null && GetPlayer().GetGUID() == _player.GetGUID())
                 {
                     if (success)
                     {
@@ -444,7 +444,7 @@ namespace Game
                 return;
 
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(removeItem.Auctioneer, NPCFlags.Auctioneer, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outDebug(LogFilter.Network, $"WORLD: HandleAuctionRemoveItem - {removeItem.Auctioneer} not found or you can't interact with him.");
                 return;
@@ -492,7 +492,7 @@ namespace Game
             auctionHouse.RemoveAuction(trans, auction);
             AddTransactionCallback(DB.Characters.AsyncCommitTransaction(trans)).AfterComplete(success =>
             {
-                if (GetPlayer() && GetPlayer().GetGUID() == _player.GetGUID())
+                if (GetPlayer() != null && GetPlayer().GetGUID() == _player.GetGUID())
                 {
                     if (success)
                         SendAuctionCommandResult(auctionIdForClient, AuctionCommand.Cancel, AuctionResult.Ok, throttle.DelayUntilNext);        //inform player, that auction is removed
@@ -506,7 +506,7 @@ namespace Game
         void HandleReplicateItems(AuctionReplicateItems replicateItems)
         {
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(replicateItems.Auctioneer, NPCFlags.Auctioneer, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outError(LogFilter.Network, $"WORLD: HandleReplicateItems - {replicateItems.Auctioneer} not found or you can't interact with him.");
                 return;
@@ -612,7 +612,7 @@ namespace Game
             foreach (var itemForSale in sellCommodity.Items)
     {
                 Item item = _player.GetItemByGuid(itemForSale.Guid);
-                if (!item)
+                if (item == null)
                 {
                     SendAuctionCommandResult(0, AuctionCommand.SellItem, AuctionResult.ItemNotFound, throttle.DelayUntilNext);
                     return;
@@ -632,7 +632,7 @@ namespace Game
                     return;
                 }
 
-                if (Global.AuctionHouseMgr.GetAItem(item.GetGUID()) || !item.CanBeTraded() || item.IsNotEmptyBag() ||
+                if (Global.AuctionHouseMgr.GetAItem(item.GetGUID()) != null || !item.CanBeTraded() || item.IsNotEmptyBag() ||
                     item.GetTemplate().HasFlag(ItemFlags.Conjured) || item.m_itemData.Expiration != 0 ||
                     item.GetCount() < itemForSale.UseCount)
                 {
@@ -756,7 +756,7 @@ namespace Game
             var auctionPlayerGuid = _player.GetGUID();
             AddTransactionCallback(DB.Characters.AsyncCommitTransaction(trans)).AfterComplete(success =>
             {
-                if (GetPlayer() && GetPlayer().GetGUID() == auctionPlayerGuid)
+                if (GetPlayer() != null && GetPlayer().GetGUID() == auctionPlayerGuid)
                 {
                     if (success)
                     {
@@ -803,7 +803,7 @@ namespace Game
             }
 
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(sellItem.Auctioneer, NPCFlags.Auctioneer, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outError(LogFilter.Network, "WORLD: HandleAuctionSellItem - Unit (%s) not found or you can't interact with him.", sellItem.Auctioneer.ToString());
                 return;
@@ -832,7 +832,7 @@ namespace Game
                 GetPlayer().RemoveAurasByType(AuraType.FeignDeath);
 
             Item item = _player.GetItemByGuid(sellItem.Items[0].Guid);
-            if (!item)
+            if (item == null)
             {
                 SendAuctionCommandResult(0, AuctionCommand.SellItem, AuctionResult.ItemNotFound, throttle.DelayUntilNext);
                 return;
@@ -845,7 +845,7 @@ namespace Game
                 return;
             }
 
-            if (Global.AuctionHouseMgr.GetAItem(item.GetGUID()) || !item.CanBeTraded() || item.IsNotEmptyBag() ||
+            if (Global.AuctionHouseMgr.GetAItem(item.GetGUID()) != null || !item.CanBeTraded() || item.IsNotEmptyBag() ||
                 item.GetTemplate().HasFlag(ItemFlags.Conjured) || item.m_itemData.Expiration != 0 ||
                 item.GetCount() != 1)
             {
@@ -904,7 +904,7 @@ namespace Game
             var auctionPlayerGuid = _player.GetGUID();
             AddTransactionCallback(DB.Characters.AsyncCommitTransaction(trans)).AfterComplete(success =>
             {
-                if (GetPlayer() && GetPlayer().GetGUID() == auctionPlayerGuid)
+                if (GetPlayer() != null && GetPlayer().GetGUID() == auctionPlayerGuid)
                 {
                     if (success)
                     {
@@ -954,7 +954,7 @@ namespace Game
                 return;
 
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(getCommodityQuote.Auctioneer, NPCFlags.Auctioneer, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outError(LogFilter.Network, $"WORLD: HandleAuctionStartCommoditiesPurchase - {getCommodityQuote.Auctioneer} not found or you can't interact with him.");
                 return;

Source/Game/Handlers/AzeriteHandler.cs

@@ -15,15 +15,15 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.AzeriteEssenceUnlockMilestone, Processing = PacketProcessing.Inplace)]
         void HandleAzeriteEssenceUnlockMilestone(AzeriteEssenceUnlockMilestone azeriteEssenceUnlockMilestone)
         {
-            if (!AzeriteItem.FindHeartForge(_player))
+            if (AzeriteItem.FindHeartForge(_player) == null)
                 return;
 
             Item item = _player.GetItemByEntry(PlayerConst.ItemIdHeartOfAzeroth, ItemSearchLocation.Everywhere);
-            if (!item)
+            if (item == null)
                 return;
 
             AzeriteItem azeriteItem = item.ToAzeriteItem();
-            if (!azeriteItem || !azeriteItem.CanUseEssences())
+            if (azeriteItem == null || !azeriteItem.CanUseEssences())
                 return;
 
             AzeriteItemMilestonePowerRecord milestonePower = CliDB.AzeriteItemMilestonePowerStorage.LookupByKey(azeriteEssenceUnlockMilestone.AzeriteItemMilestonePowerID);

Source/Game/Handlers/BankHandler.cs

@@ -22,7 +22,7 @@ namespace Game
             }
 
             Item item = GetPlayer().GetItemByPos(packet.Bag, packet.Slot);
-            if (!item)
+            if (item == null)
                 return;
 
             List<ItemPosCount> dest = new();
@@ -48,7 +48,7 @@ namespace Game
         void HandleBankerActivate(Hello packet)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(packet.Unit, NPCFlags.Banker, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outError(LogFilter.Network, "HandleBankerActivate: {0} not found or you can not interact with him.", packet.Unit.ToString());
                 return;
@@ -70,7 +70,7 @@ namespace Game
             }
 
             Item item = GetPlayer().GetItemByPos(packet.Bag, packet.Slot);
-            if (!item)
+            if (item == null)
                 return;
 
             if (Player.IsBankPos(packet.Bag, packet.Slot))                 // moving from bank to inventory
@@ -85,7 +85,7 @@ namespace Game
 
                 GetPlayer().RemoveItem(packet.Bag, packet.Slot, true);
                 Item storedItem = GetPlayer().StoreItem(dest, item, true);
-                if (storedItem)
+                if (storedItem != null)
                     GetPlayer().ItemAddedQuestCheck(storedItem.GetEntry(), storedItem.GetCount());
             }
             else                                                    // moving from inventory to bank
@@ -213,7 +213,7 @@ namespace Game
             }
 
             Item item = _player.GetItemByPos(autoBankReagent.PackSlot, autoBankReagent.Slot);
-            if (!item)
+            if (item == null)
                 return;
 
             List<ItemPosCount> dest = new();
@@ -250,7 +250,7 @@ namespace Game
             }
 
             Item pItem = _player.GetItemByPos(autoStoreBankReagent.Slot, autoStoreBankReagent.PackSlot);
-            if (!pItem)
+            if (pItem == null)
                 return;
 
             if (Player.IsReagentBankPos(autoStoreBankReagent.Slot, autoStoreBankReagent.PackSlot))

Source/Game/Handlers/BattleGroundHandler.cs

@@ -22,7 +22,7 @@ namespace Game
         void HandleBattlemasterHello(Hello hello)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(hello.Unit, NPCFlags.BattleMaster, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
                 return;
 
             // Stop the npc if moving
@@ -198,7 +198,7 @@ namespace Game
                 for (GroupReference refe = grp.GetFirstMember(); refe != null; refe = refe.Next())
                 {
                     Player member = refe.GetSource();
-                    if (!member)
+                    if (member == null)
                         continue;   // this should never happen
 
                     if (err != 0)
@@ -226,7 +226,7 @@ namespace Game
         void HandlePVPLogData(PVPLogDataRequest packet)
         {
             Battleground bg = GetPlayer().GetBattleground();
-            if (!bg)
+            if (bg == null)
                 return;
 
             // Prevent players from sending BuildPvpLogDataPacket in an arena except for when sent in Battleground.EndBattleground.
@@ -366,7 +366,7 @@ namespace Game
                 // this is still needed here if Battleground"jumping" shouldn't add deserter debuff
                 // also this is required to prevent stuck at old Battlegroundafter SetBattlegroundId set to new
                 Battleground currentBg = GetPlayer().GetBattleground();
-                if (currentBg)
+                if (currentBg != null)
                     currentBg.RemovePlayerAtLeave(GetPlayer().GetGUID(), false, true);
 
                 // set the destination instance id
@@ -411,7 +411,7 @@ namespace Game
             if (GetPlayer().IsInCombat())
             {
                 Battleground bg = GetPlayer().GetBattleground();
-                if (bg)
+                if (bg != null)
                     if (bg.GetStatus() != BattlegroundStatus.WaitLeave)
                         return;
             }
@@ -455,7 +455,7 @@ namespace Game
                 if (ginfo.IsInvitedToBGInstanceGUID != 0)
                 {
                     bg = Global.BattlegroundMgr.GetBattleground(ginfo.IsInvitedToBGInstanceGUID, bgTypeId);
-                    if (!bg)
+                    if (bg == null)
                         continue;
 
                     BattlefieldStatusNeedConfirmation battlefieldStatus;
@@ -512,7 +512,7 @@ namespace Game
 
             Group grp = GetPlayer().GetGroup();
             // no group found, error
-            if (!grp)
+            if (grp == null)
                 return;
             if (grp.GetLeaderGUID() != GetPlayer().GetGUID())
                 return;
@@ -549,7 +549,7 @@ namespace Game
             for (GroupReference refe = grp.GetFirstMember(); refe != null; refe = refe.Next())
             {
                 Player member = refe.GetSource();
-                if (!member)
+                if (member == null)
                     continue;
 
                 if (err != 0)
@@ -584,7 +584,7 @@ namespace Game
         void HandleReportPvPAFK(ReportPvPPlayerAFK reportPvPPlayerAFK)
         {
             Player reportedPlayer = Global.ObjAccessor.FindPlayer(reportPvPPlayerAFK.Offender);
-            if (!reportedPlayer)
+            if (reportedPlayer == null)
             {
                 Log.outDebug(LogFilter.Battleground, "WorldSession.HandleReportPvPAFK: player not found");
                 return;

Source/Game/Handlers/BattlePetHandler.cs

@@ -52,7 +52,7 @@ namespace Game
             response.BattlePetID = queryBattlePetName.BattlePetID;
 
             Creature summonedBattlePet = ObjectAccessor.GetCreatureOrPetOrVehicle(_player, queryBattlePetName.UnitGUID);
-            if (!summonedBattlePet || !summonedBattlePet.IsSummon())
+            if (summonedBattlePet == null || !summonedBattlePet.IsSummon())
             {
                 SendPacket(response);
                 return;

Source/Game/Handlers/BlackMarketHandlers.cs

@@ -16,7 +16,7 @@ namespace Game
         void HandleBlackMarketOpen(BlackMarketOpen blackMarketOpen)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(blackMarketOpen.Guid, NPCFlags.BlackMarket, NPCFlags2.BlackMarketView);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleBlackMarketHello - {0} not found or you can't interact with him.", blackMarketOpen.Guid.ToString());
                 return;
@@ -45,7 +45,7 @@ namespace Game
                 return;
 
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(blackMarketRequestItems.Guid, NPCFlags.BlackMarket, NPCFlags2.BlackMarketView);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleBlackMarketRequestItems - {0} not found or you can't interact with him.", blackMarketRequestItems.Guid.ToString());
                 return;
@@ -64,7 +64,7 @@ namespace Game
 
             Player player = GetPlayer();
             Creature unit = player.GetNPCIfCanInteractWith(blackMarketBidOnItem.Guid, NPCFlags.BlackMarket, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleBlackMarketBidOnItem - {0} not found or you can't interact with him.", blackMarketBidOnItem.Guid.ToString());
                 return;

Source/Game/Handlers/CalendarHandler.cs

@@ -87,7 +87,7 @@ namespace Game
         void HandleCalendarCommunityInvite(CalendarCommunityInviteRequest calendarCommunityInvite)
         {
             Guild guild = Global.GuildMgr.GetGuildById(GetPlayer().GetGuildId());
-            if (guild)
+            if (guild != null)
                 guild.MassInviteToEvent(this, calendarCommunityInvite.MinLevel, calendarCommunityInvite.MaxLevel, (GuildRankOrder)calendarCommunityInvite.MaxRankOrder);
         }
 
@@ -308,7 +308,7 @@ namespace Game
                 return;
 
             Player player = Global.ObjAccessor.FindPlayerByName(calendarInvite.Name);
-            if (player)
+            if (player != null)
             {
                 // Invitee is online
                 inviteeGuid = player.GetGUID();

Source/Game/Handlers/CharacterHandler.cs

@@ -186,7 +186,7 @@ namespace Game
 
             if (req.QuestID != 0)
             {
-                if (!_player)
+                if (_player == null)
                     return false;
 
                 if (!_player.IsQuestRewarded((uint)req.QuestID))
@@ -647,14 +647,14 @@ namespace Game
             uint initAccountId = GetAccountId();
 
             // can't delete loaded character
-            if (Global.ObjAccessor.FindPlayer(charDelete.Guid))
+            if (Global.ObjAccessor.FindPlayer(charDelete.Guid) != null)
             {
                 Global.ScriptMgr.OnPlayerFailedDelete(charDelete.Guid, initAccountId);
                 return;
             }
 
             // is guild leader
-            if (Global.GuildMgr.GetGuildByLeader(charDelete.Guid))
+            if (Global.GuildMgr.GetGuildByLeader(charDelete.Guid) != null)
             {
                 Global.ScriptMgr.OnPlayerFailedDelete(charDelete.Guid, initAccountId);
                 SendCharDelete(ResponseCodes.CharDeleteFailedGuildLeader);
@@ -764,7 +764,7 @@ namespace Game
 
         public void HandleContinuePlayerLogin()
         {
-            if (!PlayerLoading() || GetPlayer())
+            if (!PlayerLoading() || GetPlayer() != null)
             {
                 KickPlayer("WorldSession::HandleContinuePlayerLogin incorrect player state when logging in");
                 return;
@@ -834,7 +834,7 @@ namespace Game
                 pCurrChar.SetInGuild(resultGuild.Read<uint>(0));
                 pCurrChar.SetGuildRank(resultGuild.Read<byte>(1));
                 Guild guild = Global.GuildMgr.GetGuildById(pCurrChar.GetGuildId());
-                if (guild)
+                if (guild != null)
                     pCurrChar.SetGuildLevel(guild.GetLevel());
             }
             else if (pCurrChar.GetGuildId() != 0)
@@ -890,7 +890,7 @@ namespace Game
             if (pCurrChar.GetGuildId() != 0)
             {
                 Guild guild = Global.GuildMgr.GetGuildById(pCurrChar.GetGuildId());
-                if (guild)
+                if (guild != null)
                     guild.SendLoginInfo(this);
                 else
                 {
@@ -917,7 +917,7 @@ namespace Game
 
             // announce group about member online (must be after add to player list to receive announce to self)
             Group group = pCurrChar.GetGroup();
-            if (group)
+            if (group != null)
             {
                 group.SendUpdate();
                 if (group.GetLeaderGUID() == pCurrChar.GetGUID())
@@ -1093,7 +1093,7 @@ namespace Game
 
         public void AbortLogin(LoginFailureReason reason)
         {
-            if (!PlayerLoading() || GetPlayer())
+            if (!PlayerLoading() || GetPlayer() != null)
             {
                 KickPlayer("WorldSession::AbortLogin incorrect player state when logging in");
                 return;
@@ -1404,7 +1404,7 @@ namespace Game
                 return;
 
             GameObject go = GetPlayer().FindNearestGameObjectOfType(GameObjectTypes.BarberChair, 5.0f);
-            if (!go)
+            if (go == null)
             {
                 SendPacket(new BarberShopResult(BarberShopResult.ResultEnum.NotOnChair));
                 return;
@@ -1583,7 +1583,7 @@ namespace Game
                             Item item = _player.GetItemByPos(InventorySlots.Bag0, i);
 
                             // cheating check 1 (item equipped but sent empty guid)
-                            if (!item)
+                            if (item == null)
                                 return;
 
                             // cheating check 2 (sent guid does not match equipped item)
@@ -1678,10 +1678,10 @@ namespace Game
                 Item item = GetPlayer().GetItemByGuid(useEquipmentSet.Items[i].Item);
 
                 ushort dstPos = (ushort)(i | (InventorySlots.Bag0 << 8));
-                if (!item)
+                if (item == null)
                 {
                     Item uItem = GetPlayer().GetItemByPos(InventorySlots.Bag0, i);
-                    if (!uItem)
+                    if (uItem == null)
                         continue;
 
                     List<ItemPosCount> itemPosCount = new();
@@ -2473,7 +2473,7 @@ namespace Game
                 return;
 
             Corpse corpse = GetPlayer().GetCorpse();
-            if (!corpse)
+            if (corpse == null)
                 return;
 
             // prevent resurrect before 30-sec delay after body release not finished
@@ -2506,7 +2506,7 @@ namespace Game
                 return;
 
             Player ressPlayer = Global.ObjAccessor.GetPlayer(GetPlayer(), packet.Resurrecter);
-            if (ressPlayer)
+            if (ressPlayer != null)
             {
                 InstanceScript instance = ressPlayer.GetInstanceScript();
                 if (instance != null)

Source/Game/Handlers/ChatHandler.cs

@@ -213,7 +213,7 @@ namespace Game
                     }
 
                     Player receiver = Global.ObjAccessor.FindPlayerByName(extName.Name);
-                    if (!receiver || (lang != Language.Addon && !receiver.IsAcceptWhispers() && receiver.GetSession().HasPermission(RBACPermissions.CanFilterWhispers) && !receiver.IsInWhisperWhiteList(sender.GetGUID())))
+                    if (receiver == null || (lang != Language.Addon && !receiver.IsAcceptWhispers() && receiver.GetSession().HasPermission(RBACPermissions.CanFilterWhispers) && !receiver.IsInWhisperWhiteList(sender.GetGUID())))
                     {
                         SendChatPlayerNotfoundNotice(target);
                         return;
@@ -251,10 +251,10 @@ namespace Game
                 {
                     // if player is in Battleground, he cannot say to Battlegroundmembers by /p
                     Group group = GetPlayer().GetOriginalGroup();
-                    if (!group)
+                    if (group == null)
                     {
                         group = GetPlayer().GetGroup();
-                        if (!group || group.IsBGGroup())
+                        if (group == null || group.IsBGGroup())
                             return;
                     }
 
@@ -272,7 +272,7 @@ namespace Game
                     if (GetPlayer().GetGuildId() != 0)
                     {
                         Guild guild = Global.GuildMgr.GetGuildById(GetPlayer().GetGuildId());
-                        if (guild)
+                        if (guild != null)
                         {
                             Global.ScriptMgr.OnPlayerChat(GetPlayer(), type, lang, msg, guild);
 
@@ -284,7 +284,7 @@ namespace Game
                     if (GetPlayer().GetGuildId() != 0)
                     {
                         Guild guild = Global.GuildMgr.GetGuildById(GetPlayer().GetGuildId());
-                        if (guild)
+                        if (guild != null)
                         {
                             Global.ScriptMgr.OnPlayerChat(GetPlayer(), type, lang, msg, guild);
 
@@ -295,7 +295,7 @@ namespace Game
                 case ChatMsg.Raid:
                 {
                     Group group = GetPlayer().GetGroup();
-                    if (!group || !group.IsRaidGroup() || group.IsBGGroup())
+                    if (group == null || !group.IsRaidGroup() || group.IsBGGroup())
                         return;
 
                     if (group.IsLeader(GetPlayer().GetGUID()))
@@ -311,7 +311,7 @@ namespace Game
                 case ChatMsg.RaidWarning:
                 {
                     Group group = GetPlayer().GetGroup();
-                    if (!group || !(group.IsRaidGroup() || WorldConfig.GetBoolValue(WorldCfg.ChatPartyRaidWarnings)) || !(group.IsLeader(GetPlayer().GetGUID()) || group.IsAssistant(GetPlayer().GetGUID())) || group.IsBGGroup())
+                    if (group == null || !(group.IsRaidGroup() || WorldConfig.GetBoolValue(WorldCfg.ChatPartyRaidWarnings)) || !(group.IsLeader(GetPlayer().GetGUID()) || group.IsAssistant(GetPlayer().GetGUID())) || group.IsBGGroup())
                         return;
 
                     Global.ScriptMgr.OnPlayerChat(GetPlayer(), type, lang, msg, group);
@@ -341,7 +341,7 @@ namespace Game
                 case ChatMsg.InstanceChat:
                 {
                     Group group = GetPlayer().GetGroup();
-                    if (!group)
+                    if (group == null)
                         return;
 
                     if (group.IsLeader(GetPlayer().GetGUID()))
@@ -393,7 +393,7 @@ namespace Game
                     if (sender.GetGuildId() != 0)
                     {
                         Guild guild = Global.GuildMgr.GetGuildById(sender.GetGuildId());
-                        if (guild)
+                        if (guild != null)
                             guild.BroadcastAddonToGuild(this, type == ChatMsg.Officer, text, prefix, isLogged);
                     }
                     break;
@@ -405,7 +405,7 @@ namespace Game
                         break;
 
                     Player receiver = Global.ObjAccessor.FindPlayerByName(extName.Name);
-                    if (!receiver)
+                    if (receiver == null)
                         break;
 
                     sender.WhisperAddon(text, prefix, isLogged, receiver);
@@ -420,10 +420,10 @@ namespace Game
                     if (type != ChatMsg.InstanceChat)
                         group = sender.GetOriginalGroup();
 
-                    if (!group)
+                    if (group == null)
                     {
                         group = sender.GetGroup();
-                        if (!group)
+                        if (group == null)
                             break;
 
                         if (type == ChatMsg.Party)
@@ -586,10 +586,10 @@ namespace Game
             GetPlayer().UpdateCriteria(CriteriaType.DoEmote, (uint)packet.EmoteID, 0, 0, unit);
 
             // Send scripted event call
-            if (unit)
+            if (unit != null)
             {
                 Creature creature = unit.ToCreature();
-                if (creature)
+                if (creature != null)
                     creature.GetAI().ReceiveEmote(GetPlayer(), (TextEmotes)packet.EmoteID);
             }
 
@@ -601,7 +601,7 @@ namespace Game
         void HandleChatIgnoredOpcode(ChatReportIgnored packet)
         {
             Player player = Global.ObjAccessor.FindPlayer(packet.IgnoredGUID);
-            if (!player || player.GetSession() == null)
+            if (player == null || player.GetSession() == null)
                 return;
 
             ChatPkt data = new();
@@ -631,7 +631,7 @@ namespace Game
 
             Player sender = GetPlayer();
             Player receiver = Global.ObjAccessor.FindConnectedPlayer(canLocalWhisperTargetRequest.WhisperTarget);
-            if (!receiver || (!receiver.IsAcceptWhispers() && receiver.GetSession().HasPermission(RBACPermissions.CanFilterWhispers) && !receiver.IsInWhisperWhiteList(sender.GetGUID())))
+            if (receiver == null || (!receiver.IsAcceptWhispers() && receiver.GetSession().HasPermission(RBACPermissions.CanFilterWhispers) && !receiver.IsInWhisperWhiteList(sender.GetGUID())))
                 status = ChatWhisperTargetStatus.Offline;
             else
             {

Source/Game/Handlers/CombatHandler.cs

@@ -15,7 +15,7 @@ namespace Game
         void HandleAttackSwing(AttackSwing packet)
         {
             Unit enemy = Global.ObjAccessor.GetUnit(GetPlayer(), packet.Victim);
-            if (!enemy)
+            if (enemy == null)
             {
                 // stop attack state at client
                 SendAttackStop(null);
@@ -33,7 +33,7 @@ namespace Game
             //! so we'll place the same check here. Note that it might be possible to reuse this snippet
             //! in other places as well.
             Vehicle vehicle = GetPlayer().GetVehicle();
-            if (vehicle)
+            if (vehicle != null)
             {
                 VehicleSeatRecord seat = vehicle.GetSeatForPassenger(GetPlayer());
                 Cypher.Assert(seat != null);

Source/Game/Handlers/DuelHandler.cs

@@ -15,7 +15,7 @@ namespace Game
         {
             Player player = Global.ObjAccessor.FindPlayer(packet.TargetGUID);
 
-            if (!player)
+            if (player == null)
                 return;
 
             CanDuelResult response = new();

Source/Game/Handlers/GarrisonHandler.cs

@@ -21,7 +21,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.GarrisonPurchaseBuilding)]
         void HandleGarrisonPurchaseBuilding(GarrisonPurchaseBuilding garrisonPurchaseBuilding)
         {
-            if (!_player.GetNPCIfCanInteractWith(garrisonPurchaseBuilding.NpcGUID, NPCFlags.None, NPCFlags2.GarrisonArchitect))
+            if (_player.GetNPCIfCanInteractWith(garrisonPurchaseBuilding.NpcGUID, NPCFlags.None, NPCFlags2.GarrisonArchitect) == null)
                 return;
 
             Garrison garrison = _player.GetGarrison();
@@ -32,7 +32,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.GarrisonCancelConstruction)]
         void HandleGarrisonCancelConstruction(GarrisonCancelConstruction garrisonCancelConstruction)
         {
-            if (!_player.GetNPCIfCanInteractWith(garrisonCancelConstruction.NpcGUID, NPCFlags.None, NPCFlags2.GarrisonArchitect))
+            if (_player.GetNPCIfCanInteractWith(garrisonCancelConstruction.NpcGUID, NPCFlags.None, NPCFlags2.GarrisonArchitect) == null)
                 return;
 
             Garrison garrison = _player.GetGarrison();

Source/Game/Handlers/GroupHandler.cs

@@ -89,11 +89,11 @@ namespace Game
             Group group2 = invitedPlayer.GetGroup(packet.PartyIndex);
             PartyInvite partyInvite;
             // player already in another group or invited
-            if (group2 || invitedPlayer.GetGroupInvite())
+            if (group2 != null || invitedPlayer.GetGroupInvite() != null)
             {
                 SendPartyResult(PartyOperation.Invite, invitedPlayer.GetName(), PartyResult.AlreadyInGroupS);
 
-                if (group2)
+                if (group2 != null)
                 {
                     // tell the player that they were invited but it failed as they were already in a group
                     partyInvite = new PartyInvite();
@@ -104,7 +104,7 @@ namespace Game
                 return;
             }
 
-            if (group)
+            if (group != null)
             {
                 // not have permissions for invite
                 if (!group.IsLeader(invitingPlayer.GetGUID()) && !group.IsAssistant(invitingPlayer.GetGUID()))
@@ -185,14 +185,14 @@ namespace Game
                 if (!group.IsCreated())
                 {
                     // This can happen if the leader is zoning. To be removed once delayed actions for zoning are implemented
-                    if (!leader)
+                    if (leader == null)
                     {
                         group.RemoveAllInvites();
                         return;
                     }
 
                     // If we're about to create a group there really should be a leader present
-                    Cypher.Assert(leader);
+                    Cypher.Assert(leader != null);
                     group.RemoveInvite(leader);
                     group.Create(leader);
                     Global.GroupMgr.AddGroup(group);
@@ -212,7 +212,7 @@ namespace Game
                 // uninvite, group can be deleted
                 GetPlayer().UninviteFromGroup();
 
-                if (!leader || leader.GetSession() == null)
+                if (leader == null || leader.GetSession() == null)
                     return;
 
                 // report
@@ -241,7 +241,7 @@ namespace Game
 
             Group grp = GetPlayer().GetGroup(packet.PartyIndex);
             // grp is checked already above in CanUninviteFromGroup()
-            Cypher.Assert(grp);
+            Cypher.Assert(grp != null);
 
             if (grp.IsMember(packet.TargetGUID))
             {
@@ -249,7 +249,7 @@ namespace Game
                 return;
             }
             Player player = grp.GetInvited(packet.TargetGUID);
-            if (player)
+            if (player != null)
             {
                 player.UninviteFromGroup();
                 return;
@@ -264,7 +264,7 @@ namespace Game
             Player player = Global.ObjAccessor.FindConnectedPlayer(packet.TargetGUID);
             Group group = GetPlayer().GetGroup(packet.PartyIndex);
 
-            if (!group || !player)
+            if (group == null || player == null)
                 return;
 
             if (!group.IsLeader(GetPlayer().GetGUID()) || player.GetGroup() != group)
@@ -281,7 +281,7 @@ namespace Game
             RoleChangedInform roleChangedInform = new();
 
             Group group = GetPlayer().GetGroup(packet.PartyIndex);
-            byte oldRole = (byte)(group ? group.GetLfgRoles(packet.TargetGUID) : 0);
+            byte oldRole = (byte)(group != null ? group.GetLfgRoles(packet.TargetGUID) : 0);
             if (oldRole == packet.Role)
                 return;
 
@@ -291,7 +291,7 @@ namespace Game
             roleChangedInform.OldRole = oldRole;
             roleChangedInform.NewRole = packet.Role;
 
-            if (group)
+            if (group != null)
             {
                 group.BroadcastPacket(roleChangedInform, false);
                 group.SetLfgRoles(packet.TargetGUID, (LfgRoles)packet.Role);
@@ -336,7 +336,7 @@ namespace Game
             // not allowed to change
             /*
             Group group = GetPlayer().GetGroup(packet.PartyIndex);
-            if (!group)
+            if (group == null)
                  return;
 
             if (!group.IsLeader(GetPlayer().GetGUID()))
@@ -410,7 +410,7 @@ namespace Game
                 if (packet.Target.IsPlayer())
                 {
                     Player target = Global.ObjAccessor.FindConnectedPlayer(packet.Target);
-                    if (!target || target.IsHostileTo(GetPlayer()))
+                    if (target == null || target.IsHostileTo(GetPlayer()))
                         return;
                 }
 
@@ -422,7 +422,7 @@ namespace Game
         void HandleConvertRaid(ConvertRaid packet)
         {
             Group group = GetPlayer().GetGroup();
-            if (!group)
+            if (group == null)
                 return;
 
             if (GetPlayer().InBattleground())
@@ -559,7 +559,7 @@ namespace Game
             PartyMemberFullState partyMemberStats = new();
 
             Player player = Global.ObjAccessor.FindConnectedPlayer(packet.TargetGUID);
-            if (!player)
+            if (player == null)
             {
                 partyMemberStats.MemberGuid = packet.TargetGUID;
                 partyMemberStats.MemberStats.Status = GroupMemberOnlineStatus.Offline;
@@ -581,7 +581,7 @@ namespace Game
         void HandleOptOutOfLoot(OptOutOfLoot packet)
         {
             // ignore if player not loaded
-            if (!GetPlayer())                                        // needed because STATUS_AUTHED
+            if (GetPlayer() == null)                                        // needed because STATUS_AUTHED
             {
                 if (packet.PassOnLoot)
                     Log.outError(LogFilter.Network, "CMSG_OPT_OUT_OF_LOOT value<>0 for not-loaded character!");
@@ -643,7 +643,7 @@ namespace Game
                 return false;
 
             group = player.GetGroup();
-            if (!group)
+            if (group == null)
                 return false;
 
             if (group.IsRestrictPingsToAssistants() && !group.IsLeader(player.GetGUID()) && !group.IsAssistant(player.GetGUID()))
@@ -656,7 +656,7 @@ namespace Game
         void HandleSetRestrictPingsToAssistants(SetRestrictPingsToAssistants setRestrictPingsToAssistants)
         {
             Group group = GetPlayer().GetGroup(setRestrictPingsToAssistants.PartyIndex);
-            if (!group)
+            if (group == null)
                 return;
 
             if (!group.IsLeader(GetPlayer().GetGUID()))
@@ -673,7 +673,7 @@ namespace Game
                 return;
 
             Unit target = Global.ObjAccessor.GetUnit(_player, pingUnit.TargetGUID);
-            if (!target || !_player.HaveAtClient(target))
+            if (target == null || !_player.HaveAtClient(target))
                 return;
 
             ReceivePingUnit broadcastPingUnit = new();

Source/Game/Handlers/GuildHandler.cs

@@ -15,7 +15,7 @@ namespace Game
         void HandleGuildQuery(QueryGuildInfo query)
         {
             Guild guild = Global.GuildMgr.GetGuildByGuid(query.GuildGuid);
-            if (guild)
+            if (guild != null)
             {
                 guild.SendQueryResponse(this);
                 return;
@@ -33,7 +33,7 @@ namespace Game
                 return;
 
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleInviteMember(this, packet.Name);
         }
 
@@ -41,7 +41,7 @@ namespace Game
         void HandleGuildOfficerRemoveMember(GuildOfficerRemoveMember packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleRemoveMember(this, packet.Removee);
         }
 
@@ -51,7 +51,7 @@ namespace Game
             if (GetPlayer().GetGuildId() == 0)
             {
                 Guild guild = Global.GuildMgr.GetGuildById(GetPlayer().GetGuildIdInvited());
-                if (guild)
+                if (guild != null)
                     guild.HandleAcceptMember(this);
             }
         }
@@ -70,7 +70,7 @@ namespace Game
         void HandleGuildGetRoster(GuildGetRoster packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleRoster(this);
             else
                 Guild.SendCommandResult(this, GuildCommandType.GetRoster, GuildCommandError.PlayerNotInGuild);
@@ -80,7 +80,7 @@ namespace Game
         void HandleGuildPromoteMember(GuildPromoteMember packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleUpdateMemberRank(this, packet.Promotee, false);
         }
 
@@ -88,7 +88,7 @@ namespace Game
         void HandleGuildDemoteMember(GuildDemoteMember packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleUpdateMemberRank(this, packet.Demotee, true);
         }
 
@@ -98,7 +98,7 @@ namespace Game
             ObjectGuid setterGuid = GetPlayer().GetGUID();
 
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleSetMemberRank(this, packet.Member, setterGuid, (GuildRankOrder)packet.RankOrder);
         }
 
@@ -106,7 +106,7 @@ namespace Game
         void HandleGuildLeave(GuildLeave packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleLeaveMember(this);
         }
 
@@ -114,7 +114,7 @@ namespace Game
         void HandleGuildDisband(GuildDelete packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleDelete(this);
         }
 
@@ -128,7 +128,7 @@ namespace Game
                 return;
 
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleSetMOTD(this, packet.MotdText);
         }
 
@@ -142,7 +142,7 @@ namespace Game
                 return;
 
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleSetMemberNote(this, packet.Note, packet.NoteeGUID, packet.IsPublic);
         }
 
@@ -150,7 +150,7 @@ namespace Game
         void HandleGuildGetRanks(GuildGetRanks packet)
         {
             Guild guild = Global.GuildMgr.GetGuildByGuid(packet.GuildGUID);
-            if (guild)
+            if (guild != null)
                 if (guild.IsMember(GetPlayer().GetGUID()))
                     guild.SendGuildRankInfo(this);
         }
@@ -165,7 +165,7 @@ namespace Game
                 return;
 
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleAddNewRank(this, packet.Name);
         }
 
@@ -173,7 +173,7 @@ namespace Game
         void HandleGuildDeleteRank(GuildDeleteRank packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleRemoveRank(this, (GuildRankOrder)packet.RankOrder);
         }
 
@@ -181,7 +181,7 @@ namespace Game
         void HandleGuildShiftRank(GuildShiftRank shiftRank)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleShiftRank(this, (GuildRankOrder)shiftRank.RankOrder, shiftRank.ShiftUp);
         }
 
@@ -195,7 +195,7 @@ namespace Game
                 return;
 
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleSetInfo(this, packet.InfoText);
         }
 
@@ -205,7 +205,7 @@ namespace Game
             Guild.EmblemInfo emblemInfo = new();
             emblemInfo.ReadPacket(packet);
 
-            if (GetPlayer().GetNPCIfCanInteractWith(packet.Vendor, NPCFlags.TabardDesigner, NPCFlags2.None))
+            if (GetPlayer().GetNPCIfCanInteractWith(packet.Vendor, NPCFlags.TabardDesigner, NPCFlags2.None) != null)
             {
                 // Remove fake death
                 if (GetPlayer().HasUnitState(UnitState.Died))
@@ -218,7 +218,7 @@ namespace Game
                 }
 
                 Guild guild = GetPlayer().GetGuild();
-                if (guild)
+                if (guild != null)
                     guild.HandleSetEmblem(this, emblemInfo);
                 else
                     Guild.SendSaveEmblemResult(this, GuildEmblemError.NoGuild); // "You are not part of a guild!";
@@ -231,7 +231,7 @@ namespace Game
         void HandleGuildEventLogQuery(GuildEventLogQuery packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.SendEventLog(this);
         }
 
@@ -239,7 +239,7 @@ namespace Game
         void HandleGuildBankMoneyWithdrawn(GuildBankRemainingWithdrawMoneyQuery packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.SendMoneyInfo(this);
         }
 
@@ -247,7 +247,7 @@ namespace Game
         void HandleGuildPermissionsQuery(GuildPermissionsQuery packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.SendPermissions(this);
         }
 
@@ -271,10 +271,10 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.GuildBankQueryTab)]
         void HandleGuildBankQueryTab(GuildBankQueryTab packet)
         {
-            if (GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank) != null)
             {
                 Guild guild = GetPlayer().GetGuild();
-                if (guild)
+                if (guild != null)
                     guild.SendBankList(this, packet.Tab, true/*packet.FullUpdate*/);
                 // HACK: client doesn't query entire tab content if it had received SMSG_GUILD_BANK_LIST in this session
                 // but we broadcast bank updates to entire guild when *ANYONE* changes anything, incorrectly initializing clients
@@ -285,12 +285,12 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.GuildBankDepositMoney)]
         void HandleGuildBankDepositMoney(GuildBankDepositMoney packet)
         {
-            if (GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank) != null)
             {
                 if (packet.Money != 0 && GetPlayer().HasEnoughMoney(packet.Money))
                 {
                     Guild guild = GetPlayer().GetGuild();
-                    if (guild)
+                    if (guild != null)
                         guild.HandleMemberDepositMoney(this, packet.Money);
                 }
             }
@@ -299,10 +299,10 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.GuildBankWithdrawMoney)]
         void HandleGuildBankWithdrawMoney(GuildBankWithdrawMoney packet)
         {
-            if (packet.Money != 0 && GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank))
+            if (packet.Money != 0 && GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank) != null)
             {
                 Guild guild = GetPlayer().GetGuild();
-                if (guild)
+                if (guild != null)
                     guild.HandleMemberWithdrawMoney(this, packet.Money);
             }
         }
@@ -310,7 +310,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.AutoGuildBankItem)]
         void HandleAutoGuildBankItem(AutoGuildBankItem depositGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(depositGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(depositGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -327,7 +327,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.StoreGuildBankItem)]
         void HandleStoreGuildBankItem(StoreGuildBankItem storeGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(storeGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(storeGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -344,7 +344,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.SwapItemWithGuildBankItem)]
         void HandleSwapItemWithGuildBankItem(SwapItemWithGuildBankItem swapItemWithGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(swapItemWithGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(swapItemWithGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -361,7 +361,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.SwapGuildBankItemWithGuildBankItem)]
         void HandleSwapGuildBankItemWithGuildBankItem(SwapGuildBankItemWithGuildBankItem swapGuildBankItemWithGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(swapGuildBankItemWithGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(swapGuildBankItemWithGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -375,7 +375,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.MoveGuildBankItem)]
         void HandleMoveGuildBankItem(MoveGuildBankItem moveGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(moveGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(moveGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -388,7 +388,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.MergeItemWithGuildBankItem)]
         void HandleMergeItemWithGuildBankItem(MergeItemWithGuildBankItem mergeItemWithGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(mergeItemWithGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(mergeItemWithGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -405,7 +405,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.SplitItemToGuildBank)]
         void HandleSplitItemToGuildBank(SplitItemToGuildBank splitItemToGuildBank)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(splitItemToGuildBank.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(splitItemToGuildBank.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -422,7 +422,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.MergeGuildBankItemWithItem)]
         void HandleMergeGuildBankItemWithItem(MergeGuildBankItemWithItem mergeGuildBankItemWithItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(mergeGuildBankItemWithItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(mergeGuildBankItemWithItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -439,7 +439,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.SplitGuildBankItemToInventory)]
         void HandleSplitGuildBankItemToInventory(SplitGuildBankItemToInventory splitGuildBankItemToInventory)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(splitGuildBankItemToInventory.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(splitGuildBankItemToInventory.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -456,7 +456,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.AutoStoreGuildBankItem)]
         void HandleAutoStoreGuildBankItem(AutoStoreGuildBankItem autoStoreGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(autoStoreGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(autoStoreGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -469,7 +469,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.MergeGuildBankItemWithGuildBankItem)]
         void HandleMergeGuildBankItemWithGuildBankItem(MergeGuildBankItemWithGuildBankItem mergeGuildBankItemWithGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(mergeGuildBankItemWithGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(mergeGuildBankItemWithGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -483,7 +483,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.SplitGuildBankItem)]
         void HandleSplitGuildBankItem(SplitGuildBankItem splitGuildBankItem)
         {
-            if (!GetPlayer().GetGameObjectIfCanInteractWith(splitGuildBankItem.Banker, GameObjectTypes.GuildBank))
+            if (GetPlayer().GetGameObjectIfCanInteractWith(splitGuildBankItem.Banker, GameObjectTypes.GuildBank) == null)
                 return;
 
             Guild guild = GetPlayer().GetGuild();
@@ -497,10 +497,10 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.GuildBankBuyTab)]
         void HandleGuildBankBuyTab(GuildBankBuyTab packet)
         {
-            if (packet.Banker.IsEmpty() || GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank))
+            if (packet.Banker.IsEmpty() || GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank) != null)
             {
                 Guild guild = GetPlayer().GetGuild();
-                if (guild)
+                if (guild != null)
                     guild.HandleBuyBankTab(this, packet.BankTab);
             }
         }
@@ -516,10 +516,10 @@ namespace Game
 
             if (!string.IsNullOrEmpty(packet.Name) && !string.IsNullOrEmpty(packet.Icon))
             {
-                if (GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank))
+                if (GetPlayer().GetGameObjectIfCanInteractWith(packet.Banker, GameObjectTypes.GuildBank) != null)
                 {
                     Guild guild = GetPlayer().GetGuild();
-                    if (guild)
+                    if (guild != null)
                         guild.HandleSetBankTabInfo(this, packet.BankTab, packet.Name, packet.Icon);
                 }
             }
@@ -529,7 +529,7 @@ namespace Game
         void HandleGuildBankLogQuery(GuildBankLogQuery packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.SendBankLog(this, (byte)packet.Tab);
         }
 
@@ -537,7 +537,7 @@ namespace Game
         void HandleGuildBankTextQuery(GuildBankTextQuery packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.SendBankTabText(this, (byte)packet.Tab);
         }
 
@@ -551,7 +551,7 @@ namespace Game
                 return;
 
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.SetBankTabText((byte)packet.Tab, packet.TabText);
         }
 
@@ -579,7 +579,7 @@ namespace Game
         void HandleGuildRequestPartyState(RequestGuildPartyState packet)
         {
             Guild guild = Global.GuildMgr.GetGuildByGuid(packet.GuildGUID);
-            if (guild)
+            if (guild != null)
                 guild.HandleGuildPartyRequest(this);
         }
 
@@ -587,7 +587,7 @@ namespace Game
         void HandleGuildChallengeUpdateRequest(GuildChallengeUpdateRequest packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleGuildRequestChallengeUpdate(this);
         }
 
@@ -603,7 +603,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.RequestGuildRewardsList)]
         void HandleRequestGuildRewardsList(RequestGuildRewardsList packet)
         {
-            if (Global.GuildMgr.GetGuildById(GetPlayer().GetGuildId()))
+            if (Global.GuildMgr.GetGuildById(GetPlayer().GetGuildId()) != null)
             {
                 var rewards = Global.GuildMgr.GetGuildRewards();
 
@@ -630,7 +630,7 @@ namespace Game
         void HandleGuildQueryNews(GuildQueryNews packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 if (guild.GetGUID() == packet.GuildGUID)
                     guild.SendNewsUpdate(this);
         }
@@ -639,7 +639,7 @@ namespace Game
         void HandleGuildNewsUpdateSticky(GuildNewsUpdateSticky packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleNewsSetSticky(this, (uint)packet.NewsID, packet.Sticky);
         }
 
@@ -647,7 +647,7 @@ namespace Game
         void HandleGuildReplaceGuildMaster(GuildReplaceGuildMaster replaceGuildMaster)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleSetNewGuildMaster(this, "", true);
         }
 
@@ -655,7 +655,7 @@ namespace Game
         void HandleGuildSetGuildMaster(GuildSetGuildMaster packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleSetNewGuildMaster(this, packet.NewMasterName, false);
         }
 
@@ -663,7 +663,7 @@ namespace Game
         void HandleGuildSetAchievementTracking(GuildSetAchievementTracking packet)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleSetAchievementTracking(this, packet.AchievementIDs);
         }
 
@@ -671,7 +671,7 @@ namespace Game
         void HandleGuildGetAchievementMembers(GuildGetAchievementMembers getAchievementMembers)
         {
             Guild guild = GetPlayer().GetGuild();
-            if (guild)
+            if (guild != null)
                 guild.HandleGetAchievementMembers(this, getAchievementMembers.AchievementID);
         }
     }

Source/Game/Handlers/InspectHandler.cs

@@ -15,7 +15,7 @@ namespace Game
         void HandleInspect(Inspect inspect)
         {
             Player player = Global.ObjAccessor.GetPlayer(_player, inspect.Target);
-            if (!player)
+            if (player == null)
             {
                 Log.outDebug(LogFilter.Network, "WorldSession.HandleInspectOpcode: Target {0} not found.", inspect.Target.ToString());
                 return;
@@ -51,7 +51,7 @@ namespace Game
             }
 
             Guild guild = Global.GuildMgr.GetGuildById(player.GetGuildId());
-            if (guild)
+            if (guild != null)
             {
                 InspectGuildData guildData;
                 guildData.GuildGUID = guild.GetGUID();
@@ -83,7 +83,7 @@ namespace Game
         void HandleQueryInspectAchievements(QueryInspectAchievements inspect)
         {
             Player player = Global.ObjAccessor.GetPlayer(_player, inspect.Guid);
-            if (!player)
+            if (player == null)
             {
                 Log.outDebug(LogFilter.Network, "WorldSession.HandleQueryInspectAchievements: [{0}] inspected unknown Player [{1}]", GetPlayer().GetGUID().ToString(), inspect.Guid.ToString());
                 return;

Source/Game/Handlers/ItemHandler.cs

@@ -270,7 +270,7 @@ namespace Game
                 else
                 {
                     Item parentItem = _player.GetItemByGuid(dstItem.GetCreator());
-                    if (parentItem)
+                    if (parentItem != null)
                     {
                         if (Player.IsEquipmentPos(dest))
                         {
@@ -565,7 +565,7 @@ namespace Game
             }
 
             Item item = GetPlayer().GetItemByPos(packet.ContainerSlotA, packet.SlotA);
-            if (!item)
+            if (item == null)
                 return;
 
             if (!GetPlayer().IsValidPos(packet.ContainerSlotB, ItemConst.NullSlot, false))      // can be autostore pos
@@ -647,7 +647,7 @@ namespace Game
             byte itemSlot = packet.Inv.Items[1].Slot;
 
             Item gift = GetPlayer().GetItemByPos(giftContainerSlot, giftSlot);
-            if (!gift)
+            if (gift == null)
             {
                 GetPlayer().SendEquipError(InventoryResult.ItemNotFound, gift);
                 return;
@@ -660,7 +660,7 @@ namespace Game
             }
 
             Item item = GetPlayer().GetItemByPos(itemContainerSlot, itemSlot);
-            if (!item)
+            if (item == null)
             {
                 GetPlayer().SendEquipError(InventoryResult.ItemNotFound, item);
                 return;
@@ -770,7 +770,7 @@ namespace Game
                 return;
 
             Item itemTarget = GetPlayer().GetItemByGuid(socketGems.ItemGuid);
-            if (!itemTarget)                                         //missing item to socket
+            if (itemTarget == null)                                         //missing item to socket
                 return;
 
             ItemTemplate itemProto = itemTarget.GetTemplate();
@@ -789,7 +789,7 @@ namespace Game
             for (int i = 0; i < ItemConst.MaxGemSockets; ++i)
             {
                 Item gem = _player.GetItemByGuid(socketGems.GemItem[i]);
-                if (gem)
+                if (gem != null)
                 {
                     gems[i] = gem;
                     gemData[i].ItemId = gem.GetEntry();
@@ -836,7 +836,7 @@ namespace Game
             // check unique-equipped conditions
             for (int i = 0; i < ItemConst.MaxGemSockets; ++i)
             {
-                if (!gems[i])
+                if (gems[i] == null)
                     continue;
 
                 // continue check for case when attempt add 2 similar unique equipped gems in one item.
@@ -850,7 +850,7 @@ namespace Game
                         if (i == j)                                    // skip self
                             continue;
 
-                        if (gems[j])
+                        if (gems[j] != null)
                         {
                             if (iGemProto.GetId() == gems[j].GetEntry())
                             {
@@ -879,7 +879,7 @@ namespace Game
                         // NOTE: limitEntry.mode is not checked because if item has limit then it is applied in equip case
                         for (int j = 0; j < ItemConst.MaxGemSockets; ++j)
                         {
-                            if (gems[j])
+                            if (gems[j] != null)
                             {
                                 // new gem
                                 if (iGemProto.GetItemLimitCategory() == gems[j].GetTemplate().GetItemLimitCategory())
@@ -926,7 +926,7 @@ namespace Game
 
             for (ushort i = 0; i < ItemConst.MaxGemSockets; ++i)
             {
-                if (gems[i])
+                if (gems[i] != null)
                 {
                     uint gemScalingLevel = _player.GetLevel();
                     uint fixedLevel = gems[i].GetModifier(ItemModifier.TimewalkerLevel);
@@ -947,7 +947,7 @@ namespace Game
                 _player._ApplyItemMods(itemTarget, itemTarget.GetSlot(), true);
 
             Item childItem = _player.GetChildItemByGuid(itemTarget.GetChildItem());
-            if (childItem)
+            if (childItem != null)
             {
                 if (childItem.IsEquipped())
                     _player._ApplyItemMods(childItem, childItem.GetSlot(), false);
@@ -981,7 +981,7 @@ namespace Game
                 return;
 
             Item item = GetPlayer().GetItemByPos(InventorySlots.Bag0, (byte)packet.Slot);
-            if (!item)
+            if (item == null)
                 return;
 
             if (item.GetEnchantmentId(EnchantmentSlot.Temp) == 0)
@@ -995,7 +995,7 @@ namespace Game
         void HandleGetItemPurchaseData(GetItemPurchaseData packet)
         {
             Item item = GetPlayer().GetItemByGuid(packet.ItemGUID);
-            if (!item)
+            if (item == null)
             {
                 Log.outDebug(LogFilter.Network, "HandleGetItemPurchaseData: Item {0} not found!", packet.ItemGUID.ToString());
                 return;
@@ -1008,7 +1008,7 @@ namespace Game
         void HandleItemRefund(ItemPurchaseRefund packet)
         {
             Item item = GetPlayer().GetItemByGuid(packet.ItemGUID);
-            if (!item)
+            if (item == null)
             {
                 Log.outDebug(LogFilter.Network, "WorldSession.HandleItemRefund: Item {0} not found!", packet.ItemGUID.ToString());
                 return;
@@ -1032,7 +1032,7 @@ namespace Game
             if (!isUsingBankCommand)
             {
                 Creature creature = GetPlayer().GetNPCIfCanInteractWith(bankerGUID, NPCFlags.Banker, NPCFlags2.None);
-                if (!creature)
+                if (creature == null)
                     return false;
             }
 
@@ -1043,7 +1043,7 @@ namespace Game
         void HandleUseCritterItem(UseCritterItem useCritterItem)
         {
             Item item = GetPlayer().GetItemByGuid(useCritterItem.ItemGuid);
-            if (!item)
+            if (item == null)
                 return;
 
             foreach (var itemEffect in item.GetEffects())
@@ -1087,7 +1087,7 @@ namespace Game
         void HandleRemoveNewItem(RemoveNewItem removeNewItem)
         {
             Item item = _player.GetItemByGuid(removeNewItem.ItemGuid);
-            if (!item)
+            if (item == null)
             {
                 Log.outDebug(LogFilter.Network, $"WorldSession.HandleRemoveNewItem: Item ({removeNewItem.ItemGuid}) not found for {GetPlayerInfo()}!");
                 return;

Source/Game/Handlers/LFGHandler.cs

@@ -19,7 +19,7 @@ namespace Game
         void HandleLfgJoin(DFJoin dfJoin)
         {
             if (!Global.LFGMgr.IsOptionEnabled(LfgOptions.EnableDungeonFinder | LfgOptions.EnableRaidBrowser) ||
-                (GetPlayer().GetGroup() && GetPlayer().GetGroup().GetLeaderGUID() != GetPlayer().GetGUID() &&
+                (GetPlayer().GetGroup() != null && GetPlayer().GetGroup().GetLeaderGUID() != GetPlayer().GetGUID() &&
                 (GetPlayer().GetGroup().GetMembersCount() == MapConst.MaxGroupSize || !GetPlayer().GetGroup().IsLFGGroup())))
                 return;
 
@@ -47,10 +47,10 @@ namespace Game
         {
             Group group = GetPlayer().GetGroup();
 
-            Log.outDebug(LogFilter.Lfg, "CMSG_DF_LEAVE {0} in group: {1} sent guid {2}.", GetPlayerInfo(), group ? 1 : 0, dfLeave.Ticket.RequesterGuid.ToString());
+            Log.outDebug(LogFilter.Lfg, "CMSG_DF_LEAVE {0} in group: {1} sent guid {2}.", GetPlayerInfo(), group != null ? 1 : 0, dfLeave.Ticket.RequesterGuid.ToString());
 
             // Check cheating - only leader can leave the queue
-            if (!group || group.GetLeaderGUID() == dfLeave.Ticket.RequesterGuid)
+            if (group == null || group.GetLeaderGUID() == dfLeave.Ticket.RequesterGuid)
                 Global.LFGMgr.LeaveLfg(dfLeave.Ticket.RequesterGuid);
         }
 
@@ -66,7 +66,7 @@ namespace Game
         {
             ObjectGuid guid = GetPlayer().GetGUID();
             Group group = GetPlayer().GetGroup();
-            if (!group)
+            if (group == null)
             {
                 Log.outDebug(LogFilter.Lfg, "CMSG_DF_SET_ROLES {0} Not in group",
                     GetPlayerInfo());
@@ -112,7 +112,7 @@ namespace Game
             ObjectGuid guid = GetPlayer().GetGUID();
             LfgUpdateData updateData = Global.LFGMgr.GetLfgStatus(guid);
 
-            if (GetPlayer().GetGroup())
+            if (GetPlayer().GetGroup() != null)
             {
                 SendLfgUpdateStatus(updateData, true);
                 updateData.dungeons.Clear();
@@ -199,7 +199,7 @@ namespace Game
         {
             ObjectGuid guid = GetPlayer().GetGUID();
             Group group = GetPlayer().GetGroup();
-            if (!group)
+            if (group == null)
                 return;
 
             LfgPartyInfo lfgPartyInfo = new();
@@ -208,7 +208,7 @@ namespace Game
             for (GroupReference refe = group.GetFirstMember(); refe != null; refe = refe.Next())
             {
                 Player plrg = refe.GetSource();
-                if (!plrg)
+                if (plrg == null)
                     continue;
 
                 ObjectGuid pguid = plrg.GetGUID();

Source/Game/Handlers/LogoutHandler.cs

@@ -66,7 +66,7 @@ namespace Game
         void HandleLogoutCancel(LogoutCancel packet)
         {
             // Player have already logged out serverside, too late to cancel
-            if (!GetPlayer())
+            if (GetPlayer() == null)
                 return;
 
             SetLogoutStartTime(0);

Source/Game/Handlers/LootHandler.cs

@@ -38,7 +38,7 @@ namespace Game
                     GameObject go = player.GetMap().GetGameObject(lguid);
 
                     // not check distance for GO in case owned GO (fishing bobber case, for example) or Fishing hole GO
-                    if (!go || ((go.GetOwnerGUID() != player.GetGUID() && go.GetGoType() != GameObjectTypes.FishingHole) && !go.IsWithinDistInMap(player)))
+                    if (go == null || ((go.GetOwnerGUID() != player.GetGUID() && go.GetGoType() != GameObjectTypes.FishingHole) && !go.IsWithinDistInMap(player)))
                     {
                         player.SendLootRelease(lguid);
                         continue;
@@ -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;
@@ -102,7 +102,7 @@ namespace Game
                     for (GroupReference refe = group.GetFirstMember(); refe != null; refe = refe.Next())
                     {
                         Player member = refe.GetSource();
-                        if (!member)
+                        if (member == null)
                             continue;
 
                         if (!loot.HasAllowedLooter(member.GetGUID()))
@@ -203,7 +203,7 @@ namespace Game
                 return;
 
             Creature lootTarget = ObjectAccessor.GetCreature(GetPlayer(), packet.Unit);
-            if (!lootTarget)
+            if (lootTarget == null)
                 return;
 
             AELootCreatureCheck check = new(_player, packet.Unit);
@@ -272,7 +272,7 @@ namespace Game
                 GameObject go = player.GetMap().GetGameObject(lguid);
 
                 // not check distance for GO in case owned GO (fishing bobber case, for example) or Fishing hole GO
-                if (!go || ((go.GetOwnerGUID() != player.GetGUID() && go.GetGoType() != GameObjectTypes.FishingHole) && !go.IsWithinDistInMap(player)))
+                if (go == null || ((go.GetOwnerGUID() != player.GetGUID() && go.GetGoType() != GameObjectTypes.FishingHole) && !go.IsWithinDistInMap(player)))
                     return;
 
                 if (loot.IsLooted() || go.GetGoType() == GameObjectTypes.FishingNode || go.GetGoType() == GameObjectTypes.FishingHole)
@@ -303,7 +303,7 @@ namespace Game
             else if (lguid.IsCorpse())        // ONLY remove insignia at BG
             {
                 Corpse corpse = ObjectAccessor.GetCorpse(player, lguid);
-                if (!corpse || !corpse.IsWithinDistInMap(player, SharedConst.InteractionDistance))
+                if (corpse == null || !corpse.IsWithinDistInMap(player, SharedConst.InteractionDistance))
                     return;
 
                 if (loot.IsLooted())
@@ -315,7 +315,7 @@ namespace Game
             else if (lguid.IsItem())
             {
                 Item pItem = player.GetItemByGuid(lguid);
-                if (!pItem)
+                if (pItem == null)
                     return;
 
                 ItemTemplate proto = pItem.GetTemplate();
@@ -355,7 +355,7 @@ 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();
                     }
                 }
@@ -395,7 +395,7 @@ namespace Game
 
             // player on other map
             Player target = Global.ObjAccessor.GetPlayer(_player, masterLootItem.Target);
-            if (!target)
+            if (target == null)
             {
                 GetPlayer().SendLootError(ObjectGuid.Empty, ObjectGuid.Empty, LootError.PlayerNotFound);
                 return;

Source/Game/Handlers/MailHandler.cs

@@ -30,12 +30,12 @@ namespace Game
             }
             else if (guid.IsGameObject())
             {
-                if (!GetPlayer().GetGameObjectIfCanInteractWith(guid, GameObjectTypes.Mailbox))
+                if (GetPlayer().GetGameObjectIfCanInteractWith(guid, GameObjectTypes.Mailbox) == null)
                     return false;
             }
             else if (guid.IsAnyTypeCreature())
             {
-                if (!GetPlayer().GetNPCIfCanInteractWith(guid, NPCFlags.Mailbox, NPCFlags2.None))
+                if (GetPlayer().GetNPCIfCanInteractWith(guid, NPCFlags.Mailbox, NPCFlags2.None) == null)
                     return false;
             }
             else
@@ -389,7 +389,7 @@ namespace Game
                     foreach (var itemInfo in m.items)
                     {
                         Item item = player.GetMItem(itemInfo.item_guid);
-                        if (item)
+                        if (item != null)
                             draft.AddItem(item);
                         player.RemoveMItem(itemInfo.item_guid);
                     }
@@ -454,7 +454,7 @@ namespace Game
                     if (HasPermission(RBACPermissions.LogGmTrade))
                     {
                         string sender_name;
-                        if (receiver)
+                        if (receiver != null)
                         {
                             sender_accId = receiver.GetSession().GetAccountId();
                             sender_name = receiver.GetName();
@@ -470,11 +470,11 @@ namespace Game
                         Log.outCommand(GetAccountId(), "GM {0} (Account: {1}) receiver mail item: {2} (Entry: {3} Count: {4}) and send COD money: {5} to player: {6} (Account: {7})",
                             GetPlayerName(), GetAccountId(), it.GetTemplate().GetName(), it.GetEntry(), it.GetCount(), m.COD, sender_name, sender_accId);
                     }
-                    else if (!receiver)
+                    else if (receiver == null)
                         sender_accId = Global.CharacterCacheStorage.GetCharacterAccountIdByGuid(sender_guid);
 
                     // check player existence
-                    if (receiver || sender_accId != 0)
+                    if (receiver != null || sender_accId != 0)
                     {
                         new MailDraft(m.subject, "")
                             .AddMoney(m.COD)

Source/Game/Handlers/MiscHandler.cs

@@ -29,7 +29,7 @@ namespace Game
             AccountData adata = GetAccountData(request.DataType);
 
             UpdateAccountData data = new();
-            data.Player = GetPlayer() ? GetPlayer().GetGUID() : ObjectGuid.Empty;
+            data.Player = GetPlayer() != null ? GetPlayer().GetGUID() : ObjectGuid.Empty;
             data.Time = (uint)adata.Time;
             data.DataType = request.DataType;
 
@@ -111,7 +111,7 @@ namespace Game
         [WorldPacketHandler(ClientOpcodes.SetActionBarToggles)]
         void HandleSetActionBarToggles(SetActionBarToggles packet)
         {
-            if (!GetPlayer())                                        // ignore until not logged (check needed because STATUS_AUTHED)
+            if (GetPlayer() == null)                                        // ignore until not logged (check needed because STATUS_AUTHED)
             {
                 if (packet.Mask != 0)
                     Log.outError(LogFilter.Network, "WorldSession.HandleSetActionBarToggles in not logged state with value: {0}, ignored", packet.Mask);
@@ -252,7 +252,7 @@ namespace Game
                 return;
             }
             Battleground bg = player.GetBattleground();
-            if (bg)
+            if (bg != null)
                 bg.HandleAreaTrigger(player, packet.AreaTriggerID, packet.Entered);
 
             OutdoorPvP pvp = player.GetOutdoorPvP();
@@ -349,7 +349,7 @@ namespace Game
                 }
 
                 Group group = player.GetGroup();
-                if (group)
+                if (group != null)
                     if (group.IsLFGGroup() && player.GetMap().IsDungeon())
                         teleported = player.TeleportToBGEntryPoint();
             }
@@ -536,7 +536,7 @@ namespace Game
             {
                 Log.outDebug(LogFilter.Network, "Added FarSight {0} to player {1}", GetPlayer().m_activePlayerData.FarsightObject.ToString(), GetPlayer().GetGUID().ToString());
                 WorldObject target = GetPlayer().GetViewpoint();
-                if (target)
+                if (target != null)
                     GetPlayer().SetSeer(target);
                 else
                     Log.outDebug(LogFilter.Network, "Player {0} (GUID: {1}) requests non-existing seer {2}", GetPlayer().GetName(), GetPlayer().GetGUID().ToString(), GetPlayer().m_activePlayerData.FarsightObject.ToString());
@@ -573,7 +573,7 @@ namespace Game
                 return;
 
             Group group = GetPlayer().GetGroup();
-            if (group)
+            if (group != null)
             {
                 if (!group.IsLeader(GetPlayer().GetGUID()))
                     return;
@@ -618,7 +618,7 @@ namespace Game
 
             // cannot reset while in an instance
             Map map = GetPlayer().GetMap();
-            if (map && map.Instanceable())
+            if (map != null && map.Instanceable())
             {
                 Log.outDebug(LogFilter.Network, "WorldSession:HandleSetDungeonDifficulty: player (Name: {0}, {1}) tried to reset the instance while player is inside!",
                     GetPlayer().GetName(), GetPlayer().GetGUID().ToString());
@@ -626,7 +626,7 @@ namespace Game
             }
 
             Group group = GetPlayer().GetGroup();
-            if (group)
+            if (group != null)
             {
                 if (!group.IsLeader(_player.GetGUID()))
                     return;
@@ -684,7 +684,7 @@ namespace Game
 
             // cannot reset while in an instance
             Map map = GetPlayer().GetMap();
-            if (map && map.Instanceable())
+            if (map != null && map.Instanceable())
             {
                 Log.outDebug(LogFilter.Network, "WorldSession:HandleSetRaidDifficulty: player (Name: {0}, {1} tried to reset the instance while inside!",
                     GetPlayer().GetName(), GetPlayer().GetGUID().ToString());
@@ -692,7 +692,7 @@ namespace Game
             }
 
             Group group = GetPlayer().GetGroup();
-            if (group)
+            if (group != null)
             {
                 if (!group.IsLeader(_player.GetGUID()))
                     return;
@@ -732,7 +732,7 @@ namespace Game
         void HandleGuildSetFocusedAchievement(GuildSetFocusedAchievement setFocusedAchievement)
         {
             Guild guild = Global.GuildMgr.GetGuildById(GetPlayer().GetGuildId());
-            if (guild)
+            if (guild != null)
                 guild.GetAchievementMgr().SendAchievementInfo(GetPlayer(), setFocusedAchievement.AchievementID);
         }
 

Source/Game/Handlers/MovementHandler.cs

@@ -59,7 +59,7 @@ namespace Game
             Unit mover = GetPlayer().GetUnitBeingMoved();
             Player plrMover = mover.ToPlayer();
 
-            if (plrMover && plrMover.IsBeingTeleported())
+            if (plrMover != null && plrMover.IsBeingTeleported())
                 return;
 
             GetPlayer().ValidateMovementInfo(movementInfo);
@@ -78,7 +78,7 @@ namespace Game
                 return;
 
             // stop some emotes at player move
-            if (plrMover && (plrMover.GetEmoteState() != 0))
+            if (plrMover != null && (plrMover.GetEmoteState() != 0))
                 plrMover.SetEmoteState(Emote.OneshotNone);
 
             //handle special cases
@@ -95,7 +95,7 @@ namespace Game
                     movementInfo.Pos.posZ + movementInfo.transport.pos.posZ, movementInfo.Pos.Orientation + movementInfo.transport.pos.Orientation))
                     return;
 
-                if (plrMover)
+                if (plrMover != null)
                 {
                     if (plrMover.GetTransport() == null)
                     {
@@ -124,14 +124,14 @@ namespace Game
                     }
                 }
 
-                if (mover.GetTransport() == null && !mover.GetVehicle())
+                if (mover.GetTransport() == null && mover.GetVehicle() == null)
                     movementInfo.transport.Reset();
             }
-            else if (plrMover && plrMover.GetTransport() != null)                // if we were on a transport, leave
+            else if (plrMover != null && plrMover.GetTransport() != null)                // if we were on a transport, leave
                 plrMover.GetTransport().RemovePassenger(plrMover);
 
             // fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
-            if (opcode == ClientOpcodes.MoveFallLand && plrMover && !plrMover.IsInFlight())
+            if (opcode == ClientOpcodes.MoveFallLand && plrMover != null && !plrMover.IsInFlight())
                 plrMover.HandleFall(movementInfo);
 
             // interrupt parachutes upon falling or landing in water
@@ -147,7 +147,7 @@ namespace Game
 
             // Some vehicles allow the passenger to turn by himself
             Vehicle vehicle = mover.GetVehicle();
-            if (vehicle)
+            if (vehicle != null)
             {
                 VehicleSeatRecord seat = vehicle.GetSeatForPassenger(mover);
                 if (seat != null)
@@ -170,7 +170,7 @@ namespace Game
             moveUpdate.Status = mover.m_movementInfo;
             mover.SendMessageToSet(moveUpdate, GetPlayer());
 
-            if (plrMover)                                            // nothing is charmed, or player charmed
+            if (plrMover != null)                                            // nothing is charmed, or player charmed
             {
                 if (plrMover.IsSitState() && movementInfo.HasMovementFlag(MovementFlag.MaskMoving | MovementFlag.MaskTurning))
                     plrMover.SetStandState(UnitStandStateType.Stand);
@@ -179,7 +179,7 @@ namespace Game
 
                 if (movementInfo.Pos.posZ < plrMover.GetMap().GetMinHeight(plrMover.GetPhaseShift(), movementInfo.Pos.GetPositionX(), movementInfo.Pos.GetPositionY()))
                 {
-                    if (!(plrMover.GetBattleground() && plrMover.GetBattleground().HandlePlayerUnderMap(GetPlayer())))
+                    if (!(plrMover.GetBattleground() != null && plrMover.GetBattleground().HandlePlayerUnderMap(GetPlayer())))
                     {
                         // NOTE: this is actually called many times while falling
                         // even after the player has been teleported away
@@ -261,7 +261,7 @@ namespace Game
             // while the player is in transit, for example the map may get full
             if (newMap == null || newMap.CannotEnter(player) != null)
             {
-                Log.outError(LogFilter.Network, $"Map {loc.GetMapId()} could not be created for {(newMap ? newMap.GetMapName() : "Unknown")} ({player.GetGUID()}), porting player to homebind");
+                Log.outError(LogFilter.Network, $"Map {loc.GetMapId()} could not be created for {(newMap != null ? newMap.GetMapName() : "Unknown")} ({player.GetGUID()}), porting player to homebind");
                 player.TeleportTo(player.GetHomebind());
                 return;
             }
@@ -291,7 +291,7 @@ namespace Game
 
             if (!player.GetMap().AddPlayerToMap(player, !seamlessTeleport))
             {
-                Log.outError(LogFilter.Network, $"WORLD: failed to teleport player {player.GetName()} ({player.GetGUID()}) to map {loc.GetMapId()} ({(newMap ? newMap.GetMapName() : "Unknown")}) because of unknown reason!");
+                Log.outError(LogFilter.Network, $"WORLD: failed to teleport player {player.GetName()} ({player.GetGUID()}) to map {loc.GetMapId()} ({(newMap != null ? newMap.GetMapName() : "Unknown")}) because of unknown reason!");
                 player.ResetMap();
                 player.SetMap(oldMap);
                 player.TeleportTo(player.GetHomebind());
@@ -314,7 +314,7 @@ namespace Game
                 else
                 {
                     Battleground bg = player.GetBattleground();
-                    if (bg)
+                    if (bg != null)
                     {
                         if (player.IsInvitedForBattlegroundInstance(player.GetBattlegroundId()))
                             bg.AddPlayer(player, player.m_bgData.queueId);
@@ -443,7 +443,7 @@ namespace Game
         {
             Player plMover = GetPlayer().GetUnitBeingMoved().ToPlayer();
 
-            if (!plMover || !plMover.IsBeingTeleportedNear())
+            if (plMover == null || !plMover.IsBeingTeleportedNear())
                 return;
 
             if (packet.MoverGUID != plMover.GetGUID())

Source/Game/Handlers/NPCHandler.cs

@@ -20,7 +20,7 @@ namespace Game
         void HandleTabardVendorActivate(Hello packet)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(packet.Unit, NPCFlags.TabardDesigner, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleTabardVendorActivateOpcode - {0} not found or you can not interact with him.", packet.Unit.ToString());
                 return;
@@ -46,7 +46,7 @@ namespace Game
         void HandleTrainerList(Hello packet)
         {
             Creature npc = GetPlayer().GetNPCIfCanInteractWith(packet.Unit, NPCFlags.Trainer, NPCFlags2.None);
-            if (!npc)
+            if (npc == null)
             {
                 Log.outDebug(LogFilter.Network, $"WorldSession.SendTrainerList - {packet.Unit} not found or you can not interact with him.");
                 return;
@@ -193,7 +193,7 @@ namespace Game
             if (GetPlayer().HasUnitState(UnitState.Died))
                 GetPlayer().RemoveAurasByType(AuraType.FeignDeath);
 
-            if ((unit && unit.GetScriptId() != unit.LastUsedScriptID) || (go != null && go.GetScriptId() != go.LastUsedScriptID))
+            if ((unit != null && unit.GetScriptId() != unit.LastUsedScriptID) || (go != null && go.GetScriptId() != go.LastUsedScriptID))
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleGossipSelectOption - Script reloaded while in use, ignoring and set new scipt id");
                 if (unit != null)
@@ -236,7 +236,7 @@ namespace Game
         void HandleSpiritHealerActivate(SpiritHealerActivate packet)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(packet.Healer, NPCFlags.SpiritHealer, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleSpiritHealerActivateOpcode - {0} not found or you can not interact with him.", packet.Healer.ToString());
                 return;
@@ -283,7 +283,7 @@ namespace Game
                 return;
 
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(packet.Unit, NPCFlags.Innkeeper, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleBinderActivate - {0} not found or you can not interact with him.", packet.Unit.ToString());
                 return;
@@ -350,7 +350,7 @@ namespace Game
         void HandleRepairItem(RepairItem packet)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(packet.NpcGUID, NPCFlags.Repair, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleRepairItemOpcode - {0} not found or you can not interact with him.", packet.NpcGUID.ToString());
                 return;
@@ -368,7 +368,7 @@ namespace Game
                 Log.outDebug(LogFilter.Network, "ITEM: Repair {0}, at {1}", packet.ItemGUID.ToString(), packet.NpcGUID.ToString());
 
                 Item item = GetPlayer().GetItemByGuid(packet.ItemGUID);
-                if (item)
+                if (item != null)
                     GetPlayer().DurabilityRepair(item.GetPos(), true, discountMod);
             }
             else

Source/Game/Handlers/PetHandler.cs

@@ -18,7 +18,7 @@ namespace Game
         void HandleDismissCritter(DismissCritter packet)
         {
             Unit pet = ObjectAccessor.GetCreatureOrPetOrVehicle(GetPlayer(), packet.CritterGUID);
-            if (!pet)
+            if (pet == null)
             {
                 Log.outDebug(LogFilter.Network, "Critter {0} does not exist - player '{1}' ({2} / account: {3}) attempted to dismiss it (possibly lagged out)",
                     packet.CritterGUID.ToString(), GetPlayer().GetName(), GetPlayer().GetGUID().ToString(), GetAccountId());
@@ -51,7 +51,7 @@ namespace Game
 
             // used also for charmed creature
             Unit pet = Global.ObjAccessor.GetUnit(GetPlayer(), guid1);
-            if (!pet)
+            if (pet == null)
             {
                 Log.outError(LogFilter.Network, "HandlePetAction: {0} doesn't exist for {1}", guid1.ToString(), GetPlayer().GetGUID().ToString());
                 return;
@@ -95,7 +95,7 @@ namespace Game
         void HandlePetStopAttack(PetStopAttack packet)
         {
             Unit pet = ObjectAccessor.GetCreatureOrPetOrVehicle(GetPlayer(), packet.PetGUID);
-            if (!pet)
+            if (pet == null)
             {
                 Log.outError(LogFilter.Network, "HandlePetStopAttack: {0} does not exist", packet.PetGUID.ToString());
                 return;
@@ -163,18 +163,18 @@ namespace Game
 
                             // only place where pet can be player
                             Unit TargetUnit = Global.ObjAccessor.GetUnit(GetPlayer(), guid2);
-                            if (!TargetUnit)
+                            if (TargetUnit == null)
                                 return;
 
                             Unit owner = pet.GetOwner();
-                            if (owner)
+                            if (owner != null)
                                 if (!owner.IsValidAttackTarget(TargetUnit))
                                     return;
 
                             // This is true if pet has no target or has target but targets differs.
                             if (pet.GetVictim() != TargetUnit || !pet.GetCharmInfo().IsCommandAttack())
                             {
-                                if (pet.GetVictim())
+                                if (pet.GetVictim() != null)
                                     pet.AttackStop();
 
                                 if (!pet.IsTypeId(TypeId.Player) && pet.ToCreature().IsAIEnabled())
@@ -308,27 +308,27 @@ namespace Game
                     if (result == SpellCastResult.UnitNotInfront && !pet.IsPossessed() && !pet.IsVehicle())
                     {
                         Unit unit_target2 = spell.m_targets.GetUnitTarget();
-                        if (unit_target)
+                        if (unit_target != null)
                         {
                             if (!pet.HasSpellFocus())
                                 pet.SetInFront(unit_target);
                             Player player = unit_target.ToPlayer();
-                            if (player)
+                            if (player != null)
                                 pet.SendUpdateToPlayer(player);
                         }
-                        else if (unit_target2)
+                        else if (unit_target2 != null)
                         {
                             if (!pet.HasSpellFocus())
                                 pet.SetInFront(unit_target2);
                             Player player = unit_target2.ToPlayer();
-                            if (player)
+                            if (player != null)
                                 pet.SendUpdateToPlayer(player);
                         }
                         Unit powner = pet.GetCharmerOrOwner();
-                        if (powner)
+                        if (powner != null)
                         {
                             Player player = powner.ToPlayer();
-                            if (player)
+                            if (player != null)
                                 pet.SendUpdateToPlayer(player);
                         }
 
@@ -348,7 +348,7 @@ namespace Game
                             pet.SendPetAIReaction(guid1);
                         }
 
-                        if (unit_target && !GetPlayer().IsFriendlyTo(unit_target) && !pet.IsPossessed() && !pet.IsVehicle())
+                        if (unit_target != null && !GetPlayer().IsFriendlyTo(unit_target) && !pet.IsPossessed() && !pet.IsVehicle())
                         {
                             // This is true if pet has no target or has target but targets differs.
                             if (pet.GetVictim() != unit_target)
@@ -404,14 +404,14 @@ namespace Game
             response.UnitGUID = guid;
 
             Creature unit = ObjectAccessor.GetCreatureOrPetOrVehicle(GetPlayer(), guid);
-            if (unit)
+            if (unit != null)
             {
                 response.Allow = true;
                 response.Timestamp = unit.m_unitData.PetNameTimestamp;
                 response.Name = unit.GetName();
 
                 Pet pet = unit.ToPet();
-                if (pet)
+                if (pet != null)
                 {
                     DeclinedName names = pet.GetDeclinedNames();
                     if (names != null)
@@ -439,7 +439,7 @@ namespace Game
             // stable master case
             else
             {
-                if (!GetPlayer().GetNPCIfCanInteractWith(guid, NPCFlags.StableMaster, NPCFlags2.None))
+                if (GetPlayer().GetNPCIfCanInteractWith(guid, NPCFlags.StableMaster, NPCFlags2.None) == null)
                 {
                     Log.outDebug(LogFilter.Network, "Stablemaster {0} not found or you can't interact with him.", guid.ToString());
                     return false;
@@ -453,7 +453,7 @@ namespace Game
         {
             ObjectGuid petguid = packet.PetGUID;
             Unit pet = Global.ObjAccessor.GetUnit(GetPlayer(), petguid);
-            if (!pet || pet != GetPlayer().GetFirstControlled())
+            if (pet == null || pet != GetPlayer().GetFirstControlled())
             {
                 Log.outError(LogFilter.Network, "HandlePetSetAction: Unknown {0} or pet owner {1}", petguid.ToString(), GetPlayer().GetGUID().ToString());
                 return;
@@ -528,7 +528,7 @@ namespace Game
             PetStable petStable = _player.GetPetStable();
             Pet pet = ObjectAccessor.GetPet(GetPlayer(), petguid);
             // check it!
-            if (!pet || !pet.IsPet() || pet.ToPet().GetPetType() != PetType.Hunter || !pet.HasPetFlag(UnitPetFlags.CanBeRenamed) ||
+            if (pet == null || !pet.IsPet() || pet.ToPet().GetPetType() != PetType.Hunter || !pet.HasPetFlag(UnitPetFlags.CanBeRenamed) ||
                 pet.GetOwnerGUID() != _player.GetGUID() || pet.GetCharmInfo() == null ||
                 petStable == null || petStable.GetCurrentPet() == null || petStable.GetCurrentPet().PetNumber != pet.GetCharmInfo().GetPetNumber())
                 return;
@@ -587,7 +587,7 @@ namespace Game
         {
             // pet/charmed
             Creature pet = ObjectAccessor.GetCreatureOrPetOrVehicle(GetPlayer(), packet.Pet);
-            if (pet && pet.ToPet() && pet.ToPet().GetPetType() == PetType.Hunter)
+            if (pet != null && pet.ToPet() != null && pet.ToPet().GetPetType() == PetType.Hunter)
             {
                 _player.RemovePet((Pet)pet, PetSaveMode.AsDeleted);
             }
@@ -597,7 +597,7 @@ namespace Game
         void HandlePetSpellAutocast(PetSpellAutocast packet)
         {
             Creature pet = ObjectAccessor.GetCreatureOrPetOrVehicle(GetPlayer(), packet.PetGUID);
-            if (!pet)
+            if (pet == null)
             {
                 Log.outError(LogFilter.Network, "WorldSession.HandlePetSpellAutocast: {0} not found.", packet.PetGUID.ToString());
                 return;
@@ -648,7 +648,7 @@ namespace Game
         void HandlePetCastSpell(PetCastSpell petCastSpell)
         {
             Unit caster = Global.ObjAccessor.GetUnit(GetPlayer(), petCastSpell.PetGUID);
-            if (!caster)
+            if (caster == null)
             {
                 Log.outError(LogFilter.Network, "WorldSession.HandlePetCastSpell: Caster {0} not found.", petCastSpell.PetGUID.ToString());
                 return;
@@ -702,10 +702,10 @@ namespace Game
             if (result == SpellCastResult.SpellCastOk)
             {
                 Creature creature = caster.ToCreature();
-                if (creature)
+                if (creature != null)
                 {
                     Pet pet = creature.ToPet();
-                    if (pet)
+                    if (pet != null)
                     {
                         // 10% chance to play special pet attack talk, else growl
                         // actually this only seems to happen on special spells, fire shield for imp, torment for voidwalker, but it's stupid to check every spell
@@ -752,7 +752,7 @@ namespace Game
             // Handle the packet CMSG_REQUEST_PET_INFO - sent when player does ingame /reload command
 
             // Packet sent when player has a pet
-            if (_player.GetPet())
+            if (_player.GetPet() != null)
                 _player.PetSpellInitialize();
             else
             {

Source/Game/Handlers/PetitionsHandler.cs

@@ -18,7 +18,7 @@ namespace Game
         {
             // prevent cheating
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(packet.Unit, NPCFlags.Petitioner, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandlePetitionBuyOpcode - {0} not found or you can't interact with him.", packet.Unit.ToString());
                 return;
@@ -35,7 +35,7 @@ namespace Game
             if (GetPlayer().GetGuildId() != 0)
                 return;
 
-            if (Global.GuildMgr.GetGuildByName(packet.Title))
+            if (Global.GuildMgr.GetGuildByName(packet.Title) != null)
             {
                 Guild.SendCommandResult(this, GuildCommandType.CreateGuild, GuildCommandError.NameExists_S, packet.Title);
                 return;
@@ -70,7 +70,7 @@ namespace Game
 
             GetPlayer().ModifyMoney(-cost);
             Item charter = GetPlayer().StoreNewItem(dest, charterItemID, true);
-            if (!charter)
+            if (charter == null)
                 return;
 
             charter.SetPetitionId((uint)charter.GetGUID().GetCounter());
@@ -167,7 +167,7 @@ namespace Game
         void HandlePetitionRenameGuild(PetitionRenameGuild packet)
         {
             Item item = GetPlayer().GetItemByGuid(packet.PetitionGuid);
-            if (!item)
+            if (item == null)
                 return;
 
             Petition petition = Global.PetitionMgr.GetPetition(packet.PetitionGuid);
@@ -177,7 +177,7 @@ namespace Game
                 return;
             }
 
-            if (Global.GuildMgr.GetGuildByName(packet.NewGuildName))
+            if (Global.GuildMgr.GetGuildByName(packet.NewGuildName) != null)
             {
                 Guild.SendCommandResult(this, GuildCommandType.CreateGuild, GuildCommandError.NameExists_S, packet.NewGuildName);
                 return;
@@ -274,7 +274,7 @@ namespace Game
 
             // update for owner if online
             Player owner1 = Global.ObjAccessor.FindPlayer(ownerGuid);
-            if (owner1)
+            if (owner1 != null)
                 owner1.SendPacket(signResult);
         }
 
@@ -302,7 +302,7 @@ namespace Game
         void HandleOfferPetition(OfferPetition packet)
         {
             Player player = Global.ObjAccessor.FindConnectedPlayer(packet.TargetPlayer);
-            if (!player)
+            if (player == null)
                 return;
 
             Petition petition = Global.PetitionMgr.GetPetition(packet.ItemGUID);
@@ -335,7 +335,7 @@ namespace Game
         {
             // Check if player really has the required petition charter
             Item item = GetPlayer().GetItemByGuid(packet.Item);
-            if (!item)
+            if (item == null)
                 return;
 
             Petition petition = Global.PetitionMgr.GetPetition(packet.Item);
@@ -362,7 +362,7 @@ namespace Game
             }
 
             // Check if guild name is already taken
-            if (Global.GuildMgr.GetGuildByName(name))
+            if (Global.GuildMgr.GetGuildByName(name) != null)
             {
                 Guild.SendCommandResult(this, GuildCommandType.CreateGuild, GuildCommandError.NameExists_S, name);
                 return;
@@ -419,7 +419,7 @@ namespace Game
         public void SendPetitionShowList(ObjectGuid guid)
         {
             Creature creature = GetPlayer().GetNPCIfCanInteractWith(guid, NPCFlags.Petitioner, NPCFlags2.None);
-            if (!creature)
+            if (creature == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandlePetitionShowListOpcode - {0} not found or you can't interact with him.", guid.ToString());
                 return;

Source/Game/Handlers/QueryHandler.cs

@@ -187,7 +187,7 @@ namespace Game
         {
             CorpseLocation packet = new();
             Player player = Global.ObjAccessor.FindConnectedPlayer(queryCorpseLocation.Player);
-            if (!player || !player.HasCorpse() || !_player.IsInSameRaidWith(player))
+            if (player == null || !player.HasCorpse() || !_player.IsInSameRaidWith(player))
             {
                 packet.Valid = false;                               // corpse not found
                 packet.Player = queryCorpseLocation.Player;
@@ -240,10 +240,10 @@ namespace Game
             response.Player = queryCorpseTransport.Player;
 
             Player player = Global.ObjAccessor.FindConnectedPlayer(queryCorpseTransport.Player);
-            if (player)
+            if (player != null)
             {
                 Corpse corpse = player.GetCorpse();
-                if (_player.IsInSameRaidWith(player) && corpse && !corpse.GetTransGUID().IsEmpty() && corpse.GetTransGUID() == queryCorpseTransport.Transport)
+                if (_player.IsInSameRaidWith(player) && corpse != null && !corpse.GetTransGUID().IsEmpty() && corpse.GetTransGUID() == queryCorpseTransport.Transport)
                 {
                     response.Position = new Vector3(corpse.GetTransOffsetX(), corpse.GetTransOffsetY(), corpse.GetTransOffsetZ());
                     response.Facing = corpse.GetTransOffsetO();
@@ -315,7 +315,7 @@ namespace Game
             queryItemTextResponse.Id = packet.Id;
 
             Item item = GetPlayer().GetItemByGuid(packet.Id);
-            if (item)
+            if (item != null)
             {
                 queryItemTextResponse.Valid = true;
                 queryItemTextResponse.Text = item.GetText();

Source/Game/Handlers/QuestHandler.cs

@@ -20,7 +20,7 @@ namespace Game
             QuestGiverStatus questStatus = QuestGiverStatus.None;
 
             var questgiver = Global.ObjAccessor.GetObjectByTypeMask(GetPlayer(), packet.QuestGiverGUID, TypeMask.Unit | TypeMask.GameObject);
-            if (!questgiver)
+            if (questgiver == null)
             {
                 Log.outInfo(LogFilter.Network, "Error in CMSG_QUESTGIVER_STATUS_QUERY, called for non-existing questgiver {0}", packet.QuestGiverGUID.ToString());
                 return;
@@ -95,7 +95,7 @@ namespace Game
             }
 
             Player playerQuestObject = obj.ToPlayer();
-            if (playerQuestObject)
+            if (playerQuestObject != null)
             {
                 if ((_player.GetPlayerSharingQuest().IsEmpty() && _player.GetPlayerSharingQuest() != packet.QuestGiverGUID) || !playerQuestObject.CanShareQuest(packet.QuestID))
                 {
@@ -151,13 +151,13 @@ namespace Game
                     if (quest.IsPushedToPartyOnAccept())
                     {
                         var group = _player.GetGroup();
-                        if (group)
+                        if (group != null)
                         {
                             for (GroupReference refe = group.GetFirstMember(); refe != null; refe = refe.Next())
                             {
                                 Player player = refe.GetSource();
 
-                                if (!player || player == _player || !player.IsInMap(_player))     // not self and in same map
+                                if (player == null || player == _player || !player.IsInMap(_player))     // not self and in same map
                                     continue;
 
                                 if (player.CanTakeQuest(quest, true))
@@ -207,7 +207,7 @@ namespace Game
         {
             // Verify that the guid is valid and is a questgiver or involved in the requested quest
             var obj = Global.ObjAccessor.GetObjectByTypeMask(GetPlayer(), packet.QuestGiverGUID, (TypeMask.Unit | TypeMask.GameObject | TypeMask.Item));
-            if (!obj || (!obj.HasQuest(packet.QuestID) && !obj.HasInvolvedQuest(packet.QuestID)))
+            if (obj == null || (!obj.HasQuest(packet.QuestID) && !obj.HasInvolvedQuest(packet.QuestID)))
             {
                 GetPlayer().PlayerTalkClass.SendCloseGossip();
                 return;
@@ -342,7 +342,7 @@ namespace Game
             if (!quest.HasFlag(QuestFlags.AutoComplete))
             {
                 obj = Global.ObjAccessor.GetObjectByTypeMask(GetPlayer(), packet.QuestGiverGUID, TypeMask.Unit | TypeMask.GameObject);
-                if (!obj || !obj.HasInvolvedQuest(packet.QuestID))
+                if (obj == null || !obj.HasInvolvedQuest(packet.QuestID))
                     return;
 
                 // some kind of WPE protection
@@ -499,7 +499,7 @@ namespace Game
             else
                 obj = Global.ObjAccessor.GetObjectByTypeMask(GetPlayer(), packet.QuestGiverGUID, TypeMask.Unit | TypeMask.GameObject);
 
-            if (!obj)
+            if (obj == null)
                 return;
 
             if (!quest.HasFlag(QuestFlags.AutoComplete))
@@ -577,7 +577,7 @@ namespace Game
             }
 
             Group group = sender.GetGroup();
-            if (!group)
+            if (group == null)
             {
                 sender.SendPushToPartyResponse(sender, QuestPushReason.NotInParty);
                 return;
@@ -587,7 +587,7 @@ namespace Game
             {
                 Player receiver = refe.GetSource();
 
-                if (!receiver || receiver == sender)
+                if (receiver == null || receiver == sender)
                     continue;
 
                 if (!receiver.GetPlayerSharingQuest().IsEmpty())
@@ -718,7 +718,7 @@ namespace Game
                 if (_player.GetPlayerSharingQuest() == packet.SenderGUID)
                 {
                     Player player = Global.ObjAccessor.FindPlayer(_player.GetPlayerSharingQuest());
-                    if (player)
+                    if (player != null)
                         player.SendPushToPartyResponse(_player, packet.Result);
                 }
 

Source/Game/Handlers/SocialHandler.cs

@@ -163,7 +163,7 @@ namespace Game
             }
 
             Player player = Global.ObjAccessor.FindPlayerByName(packet.CharName);
-            if (!player)
+            if (player == null)
             {
                 SendNotification(CypherStrings.PlayerNotExistOrOffline, packet.CharName);
                 return;

Source/Game/Handlers/SpellHandler.cs

@@ -130,7 +130,7 @@ namespace Game
             }
 
             Item item = player.GetItemByPos(packet.Slot, packet.PackSlot);
-            if (!item)
+            if (item == null)
             {
                 player.SendEquipError(InventoryResult.ItemNotFound);
                 return;
@@ -207,11 +207,11 @@ namespace Game
 
         void HandleOpenWrappedItemCallback(ushort pos, ObjectGuid itemGuid, SQLResult result)
         {
-            if (!GetPlayer())
+            if (GetPlayer() == null)
                 return;
 
             Item item = GetPlayer().GetItemByPos(pos);
-            if (!item)
+            if (item == null)
                 return;
 
             if (item.GetGUID() != itemGuid || !item.IsWrapped()) // during getting result, gift was swapped with another item
@@ -248,7 +248,7 @@ namespace Game
         void HandleGameObjectUse(GameObjUse packet)
         {
             GameObject obj = GetPlayer().GetGameObjectIfCanInteractWith(packet.Guid);
-            if (obj)
+            if (obj != null)
             {
                 // ignore for remote control state
                 if (GetPlayer().GetUnitBeingMoved() != GetPlayer())
@@ -267,7 +267,7 @@ namespace Game
                 return;
 
             GameObject go = GetPlayer().GetGameObjectIfCanInteractWith(packet.Guid);
-            if (go)
+            if (go != null)
             {
                 if (go.GetAI().OnGossipHello(GetPlayer()))
                     return;
@@ -571,7 +571,7 @@ namespace Game
 
             // Get unit for which data is needed by client
             Unit unit = Global.ObjAccessor.GetUnit(GetPlayer(), guid);
-            if (!unit)
+            if (unit == null)
                 return;
 
             if (!unit.HasAuraType(AuraType.CloneCaster))
@@ -579,11 +579,11 @@ namespace Game
 
             // Get creator of the unit (SPELL_AURA_CLONE_CASTER does not stack)
             Unit creator = unit.GetAuraEffectsByType(AuraType.CloneCaster).FirstOrDefault().GetCaster();
-            if (!creator)
+            if (creator == null)
                 return;
 
             Player player = creator.ToPlayer();
-            if (player)
+            if (player != null)
             {
                 MirrorImageComponentedData mirrorImageComponentedData = new();
                 mirrorImageComponentedData.UnitGUID = guid;
@@ -601,7 +601,7 @@ namespace Game
                 }
 
                 Guild guild = player.GetGuild();
-                mirrorImageComponentedData.GuildGUID = (guild ? guild.GetGUID() : ObjectGuid.Empty);
+                mirrorImageComponentedData.GuildGUID = (guild != null ? guild.GetGUID() : ObjectGuid.Empty);
 
                 byte[] itemSlots =
                 {
@@ -671,7 +671,7 @@ namespace Game
         void HandleUpdateMissileTrajectory(UpdateMissileTrajectory packet)
         {
             Unit caster = Global.ObjAccessor.GetUnit(GetPlayer(), packet.Guid);
-            Spell spell = caster ? caster.GetCurrentSpell(CurrentSpellTypes.Generic) : null;
+            Spell spell = caster != null ? caster.GetCurrentSpell(CurrentSpellTypes.Generic) : null;
             if (spell == null || spell.m_spellInfo.Id != packet.SpellID || spell.m_castId != packet.CastID || !spell.m_targets.HasDst() || !spell.m_targets.HasSrc())
                 return;
 

Source/Game/Handlers/TaxiHandler.cs

@@ -18,7 +18,7 @@ namespace Game
         void HandleEnableTaxiNodeOpcode(EnableTaxiNode enableTaxiNode)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(enableTaxiNode.Unit, NPCFlags.FlightMaster, NPCFlags2.None);
-            if (unit)
+            if (unit != null)
                 SendLearnNewTaxiNode(unit);
         }
 
@@ -33,7 +33,7 @@ namespace Game
             // cheating checks
             Player player = GetPlayer();
             Creature unit = ObjectAccessor.GetCreature(player, guid);
-            if (!unit || unit.IsHostileTo(player) || !unit.HasNpcFlag(NPCFlags.FlightMaster))
+            if (unit == null || unit.IsHostileTo(player) || !unit.HasNpcFlag(NPCFlags.FlightMaster))
             {
                 Log.outDebug(LogFilter.Network, "WorldSession.SendTaxiStatus - {0} not found.", guid.ToString());
                 return;

Source/Game/Handlers/ToyHandler.cs

@@ -18,7 +18,7 @@ namespace Game
                 return;
 
             Item item = _player.GetItemByGuid(packet.Guid);
-            if (!item)
+            if (item == null)
             {
                 _player.SendEquipError(InventoryResult.ItemNotFound);
                 return;

Source/Game/Handlers/TradeHandler.cs

@@ -17,7 +17,7 @@ namespace Game
         {
             info.Clear();   // reuse packet
             Player trader = GetPlayer().GetTrader();
-            info.PartnerIsSameBnetAccount = trader && trader.GetSession().GetBattlenetAccountId() == GetBattlenetAccountId();
+            info.PartnerIsSameBnetAccount = trader != null && trader.GetSession().GetBattlenetAccountId() == GetBattlenetAccountId();
             SendPacket(info);
         }
 
@@ -41,7 +41,7 @@ namespace Game
             for (byte i = 0; i < (byte)TradeSlots.Count; ++i)
             {
                 Item item = view_trade.GetItem((TradeSlots)i);
-                if (item)
+                if (item != null)
                 {
                     TradeUpdated.TradeItem tradeItem = new();
                     tradeItem.Slot = i;
@@ -84,7 +84,7 @@ namespace Game
         void MoveItems(Item[] myItems, Item[] hisItems)
         {
             Player trader = GetPlayer().GetTrader();
-            if (!trader)
+            if (trader == null)
                 return;
 
             for (byte i = 0; i < (int)TradeSlots.TradedCount; ++i)
@@ -98,7 +98,7 @@ namespace Game
                     // Ok, if trade item exists and can be stored
                     // If we trade in both directions we had to check, if the trade will work before we actually do it
                     // A roll back is not possible after we stored it
-                    if (myItems[i])
+                    if (myItems[i] != null)
                     {
                         // logging
                         Log.outDebug(LogFilter.Network, "partner storing: {0}", myItems[i].GetGUID().ToString());
@@ -116,7 +116,7 @@ namespace Game
                         // store
                         trader.MoveItemToInventory(traderDst, myItems[i], true, true);
                     }
-                    if (hisItems[i])
+                    if (hisItems[i] != null)
                     {
                         // logging
                         Log.outDebug(LogFilter.Network, "player storing: {0}", hisItems[i].GetGUID().ToString());
@@ -140,7 +140,7 @@ namespace Game
                 {
                     // in case of fatal error log error message
                     // return the already removed items to the original owner
-                    if (myItems[i])
+                    if (myItems[i] != null)
                     {
                         if (!traderCanTrade)
                             Log.outError(LogFilter.Network, "trader can't store item: {0}", myItems[i].GetGUID().ToString());
@@ -150,7 +150,7 @@ namespace Game
                             Log.outError(LogFilter.Network, "player can't take item back: {0}", myItems[i].GetGUID().ToString());
                     }
                     // return the already removed items to the original owner
-                    if (hisItems[i])
+                    if (hisItems[i] != null)
                     {
                         if (!playerCanTrade)
                             Log.outError(LogFilter.Network, "player can't store item: {0}", hisItems[i].GetGUID().ToString());
@@ -172,7 +172,7 @@ namespace Game
             for (byte i = 0; i < (int)TradeSlots.Count; ++i)
             {
                 Item item = myTrade.GetItem((TradeSlots)i);
-                if (item)
+                if (item != null)
                 {
                     Log.outDebug(LogFilter.Network, "player trade item {0} bag: {1} slot: {2}", item.GetGUID().ToString(), item.GetBagSlot(), item.GetSlot());
                     //Can return null
@@ -180,7 +180,7 @@ namespace Game
                     myItems[i].SetInTrade();
                 }
                 item = hisTrade.GetItem((TradeSlots)i);
-                if (item)
+                if (item != null)
                 {
                     Log.outDebug(LogFilter.Network, "partner trade item {0} bag: {1} slot: {2}", item.GetGUID().ToString(), item.GetBagSlot(), item.GetSlot());
                     hisItems[i] = item;
@@ -200,9 +200,9 @@ namespace Game
             // clear 'in-trade' flag
             for (byte i = 0; i < (int)TradeSlots.Count; ++i)
             {
-                if (myItems[i])
+                if (myItems[i] != null)
                     myItems[i].SetInTrade(false);
-                if (hisItems[i])
+                if (hisItems[i] != null)
                     hisItems[i].SetInTrade(false);
             }
         }
@@ -285,7 +285,7 @@ namespace Game
             for (byte i = 0; i < (byte)TradeSlots.Count; ++i)
             {
                 Item item = my_trade.GetItem((TradeSlots)i);
-                if (item)
+                if (item != null)
                 {
                     if (!item.CanBeTraded(false, true))
                     {
@@ -303,7 +303,7 @@ namespace Game
                     }
                 }
                 item = his_trade.GetItem((TradeSlots)i);
-                if (item)
+                if (item != null)
                 {
                     if (!item.CanBeTraded(false, true))
                     {
@@ -331,8 +331,8 @@ namespace Game
                     SpellInfo spellEntry = Global.SpellMgr.GetSpellInfo(my_spell_id, _player.GetMap().GetDifficultyID());
                     Item castItem = my_trade.GetSpellCastItem();
 
-                    if (spellEntry == null || !his_trade.GetItem(TradeSlots.NonTraded) ||
-                        (my_trade.HasSpellCastItem() && !castItem))
+                    if (spellEntry == null || his_trade.GetItem(TradeSlots.NonTraded) == null ||
+                        (my_trade.HasSpellCastItem() && castItem == null))
                     {
                         ClearAcceptTradeMode(my_trade, his_trade);
                         ClearAcceptTradeMode(myItems, hisItems);
@@ -367,7 +367,7 @@ namespace Game
                     SpellInfo spellEntry = Global.SpellMgr.GetSpellInfo(his_spell_id, trader.GetMap().GetDifficultyID());
                     Item castItem = his_trade.GetSpellCastItem();
 
-                    if (spellEntry == null || !my_trade.GetItem(TradeSlots.NonTraded) || (his_trade.HasSpellCastItem() && !castItem))
+                    if (spellEntry == null || my_trade.GetItem(TradeSlots.NonTraded) == null || (his_trade.HasSpellCastItem() && castItem == null))
                     {
                         his_trade.SetSpell(0);
 
@@ -438,12 +438,12 @@ namespace Game
                 // execute trade: 1. remove
                 for (byte i = 0; i < (int)TradeSlots.TradedCount; ++i)
                 {
-                    if (myItems[i])
+                    if (myItems[i] != null)
                     {
                         myItems[i].SetGiftCreator(GetPlayer().GetGUID());
                         GetPlayer().MoveItemFromInventory(myItems[i].GetBagSlot(), myItems[i].GetSlot(), true);
                     }
-                    if (hisItems[i])
+                    if (hisItems[i] != null)
                     {
                         hisItems[i].SetGiftCreator(trader.GetGUID());
                         trader.MoveItemFromInventory(hisItems[i].GetBagSlot(), hisItems[i].GetSlot(), true);
@@ -540,7 +540,7 @@ namespace Game
         void HandleCancelTrade(CancelTrade cancelTrade)
         {
             // sent also after LOGOUT COMPLETE
-            if (GetPlayer())                                             // needed because STATUS_LOGGEDIN_OR_RECENTLY_LOGGOUT
+            if (GetPlayer() != null)                                             // needed because STATUS_LOGGEDIN_OR_RECENTLY_LOGGOUT
                 GetPlayer().TradeCancel(true);
         }
 
@@ -589,7 +589,7 @@ namespace Game
 
 
             Player pOther = Global.ObjAccessor.FindPlayer(initiateTrade.Guid);
-            if (!pOther)
+            if (pOther == null)
             {
                 info.Status = TradeStatus.NoTarget;
                 SendTradeStatus(info);
@@ -702,7 +702,7 @@ namespace Game
 
             // check cheating, can't fail with correct client operations
             Item item = GetPlayer().GetItemByPos(setTradeItem.PackSlot, setTradeItem.ItemSlotInPack);
-            if (!item || (setTradeItem.TradeSlot != (byte)TradeSlots.NonTraded && !item.CanBeTraded(false, true)))
+            if (item == null || (setTradeItem.TradeSlot != (byte)TradeSlots.NonTraded && !item.CanBeTraded(false, true)))
             {
                 info.Status = TradeStatus.Cancelled;
                 SendTradeStatus(info);

Source/Game/Handlers/TraitHandler.cs

@@ -31,7 +31,7 @@ namespace Game
                 return;
             }
 
-            if (_player.GetBattleground() && _player.GetBattleground().GetStatus() == BattlegroundStatus.InProgress)
+            if (_player.GetBattleground() != null && _player.GetBattleground().GetStatus() == BattlegroundStatus.InProgress)
             {
                 SendPacket(new TraitConfigCommitFailed(configId, 0, (int)TalentLearnResult.InPvpMatch));
                 return;

Source/Game/Handlers/TransmogrificationHandler.cs

@@ -19,7 +19,7 @@ namespace Game
             Player player = GetPlayer();
 
             // Validate
-            if (!player.GetNPCIfCanInteractWith(transmogrifyItems.Npc, NPCFlags.Transmogrifier, NPCFlags2.None))
+            if (player.GetNPCIfCanInteractWith(transmogrifyItems.Npc, NPCFlags.Transmogrifier, NPCFlags2.None) == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleTransmogrifyItems - Unit (GUID: {0}) not found or player can't interact with it.", transmogrifyItems.ToString());
                 return;
@@ -94,7 +94,7 @@ namespace Game
 
                 // transmogrified item
                 Item itemTransmogrified = player.GetItemByPos(InventorySlots.Bag0, (byte)transmogItem.Slot);
-                if (!itemTransmogrified)
+                if (itemTransmogrified == null)
                 {
                     Log.outDebug(LogFilter.Network, "WORLD: HandleTransmogrifyItems - Player (GUID: {0}, name: {1}) tried to transmogrify an invalid item in a valid slot (slot: {2}).", player.GetGUID().ToString(), player.GetName(), transmogItem.Slot);
                     return;
@@ -316,7 +316,7 @@ namespace Game
                 foreach (ObjectGuid itemGuid in itemsProvidingAppearance)
                 {
                     Item item = player.GetItemByGuid(itemGuid);
-                    if (item)
+                    if (item != null)
                     {
                         item.SetNotRefundable(player);
                         item.ClearSoulboundTradeable(player);

Source/Game/Handlers/VehicleHandler.cs

@@ -28,7 +28,7 @@ namespace Game
         void HandleRequestVehiclePrevSeat(RequestVehiclePrevSeat packet)
         {
             Unit vehicle_base = GetPlayer().GetVehicleBase();
-            if (!vehicle_base)
+            if (vehicle_base == null)
                 return;
 
             VehicleSeatRecord seat = GetPlayer().GetVehicle().GetSeatForPassenger(GetPlayer());
@@ -46,7 +46,7 @@ namespace Game
         void HandleRequestVehicleNextSeat(RequestVehicleNextSeat packet)
         {
             Unit vehicle_base = GetPlayer().GetVehicleBase();
-            if (!vehicle_base)
+            if (vehicle_base == null)
                 return;
 
             VehicleSeatRecord seat = GetPlayer().GetVehicle().GetSeatForPassenger(GetPlayer());
@@ -64,7 +64,7 @@ namespace Game
         void HandleMoveChangeVehicleSeats(MoveChangeVehicleSeats packet)
         {
             Unit vehicle_base = GetPlayer().GetVehicleBase();
-            if (!vehicle_base)
+            if (vehicle_base == null)
                 return;
 
             VehicleSeatRecord seat = GetPlayer().GetVehicle().GetSeatForPassenger(GetPlayer());
@@ -87,12 +87,12 @@ namespace Game
             else
             {
                 Unit vehUnit = Global.ObjAccessor.GetUnit(GetPlayer(), packet.DstVehicle);
-                if (vehUnit)
+                if (vehUnit != null)
                 {
                     Vehicle vehicle = vehUnit.GetVehicleKit();
-                    if (vehicle)
-                        if (vehicle.HasEmptySeat((sbyte) packet.DstSeatIndex))
-                            vehUnit.HandleSpellClick(GetPlayer(), (sbyte) packet.DstSeatIndex);
+                    if (vehicle != null)
+                        if (vehicle.HasEmptySeat((sbyte)packet.DstSeatIndex))
+                            vehUnit.HandleSpellClick(GetPlayer(), (sbyte)packet.DstSeatIndex);
                 }
             }
         }
@@ -101,7 +101,7 @@ namespace Game
         void HandleRequestVehicleSwitchSeat(RequestVehicleSwitchSeat packet)
         {
             Unit vehicle_base = GetPlayer().GetVehicleBase();
-            if (!vehicle_base)
+            if (vehicle_base == null)
                 return;
 
             VehicleSeatRecord seat = GetPlayer().GetVehicle().GetSeatForPassenger(GetPlayer());
@@ -117,12 +117,12 @@ namespace Game
             else
             {
                 Unit vehUnit = Global.ObjAccessor.GetUnit(GetPlayer(), packet.Vehicle);
-                if (vehUnit)
+                if (vehUnit != null)
                 {
                     Vehicle vehicle = vehUnit.GetVehicleKit();
-                    if (vehicle)
-                        if (vehicle.HasEmptySeat((sbyte) packet.SeatIndex))
-                            vehUnit.HandleSpellClick(GetPlayer(), (sbyte) packet.SeatIndex);
+                    if (vehicle != null)
+                        if (vehicle.HasEmptySeat((sbyte)packet.SeatIndex))
+                            vehUnit.HandleSpellClick(GetPlayer(), (sbyte)packet.SeatIndex);
                 }
             }
         }
@@ -131,16 +131,16 @@ namespace Game
         void HandleRideVehicleInteract(RideVehicleInteract packet)
         {
             Player player = Global.ObjAccessor.GetPlayer(_player, packet.Vehicle);
-            if (player)
+            if (player != null)
             {
-                if (!player.GetVehicleKit())
+                if (player.GetVehicleKit() == null)
                     return;
                 if (!player.IsInRaidWith(GetPlayer()))
                     return;
                 if (!player.IsWithinDistInMap(GetPlayer(), SharedConst.InteractionDistance))
                     return;
                 // Dont' allow players to enter player vehicle on arena
-                if (!_player.GetMap() || _player.GetMap().IsBattleArena())
+                if (_player.GetMap() == null || _player.GetMap().IsBattleArena())
                     return;
 
                 GetPlayer().EnterVehicle(player);
@@ -151,7 +151,7 @@ namespace Game
         void HandleEjectPassenger(EjectPassenger packet)
         {
             Vehicle vehicle = GetPlayer().GetVehicleKit();
-            if (!vehicle)
+            if (vehicle == null)
             {
                 Log.outError(LogFilter.Network, "HandleEjectPassenger: {0} is not in a vehicle!", GetPlayer().GetGUID().ToString());
                 return;
@@ -160,7 +160,7 @@ namespace Game
             if (packet.Passenger.IsUnit())
             {
                 Unit unit = Global.ObjAccessor.GetUnit(GetPlayer(), packet.Passenger);
-                if (!unit)
+                if (unit == null)
                 {
                     Log.outError(LogFilter.Network, "{0} tried to eject {1} from vehicle, but the latter was not found in world!", GetPlayer().GetGUID().ToString(), packet.Passenger.ToString());
                     return;
@@ -188,7 +188,7 @@ namespace Game
         void HandleRequestVehicleExit(RequestVehicleExit packet)
         {
             Vehicle vehicle = GetPlayer().GetVehicle();
-            if (vehicle)
+            if (vehicle != null)
             {
                 VehicleSeatRecord seat = vehicle.GetSeatForPassenger(GetPlayer());
                 if (seat != null)

Source/Game/Handlers/VoidStorageHandler.cs

@@ -20,7 +20,7 @@ namespace Game
         void HandleVoidStorageUnlock(UnlockVoidStorage unlockVoidStorage)
         {
             Creature unit = GetPlayer().GetNPCIfCanInteractWith(unlockVoidStorage.Npc, NPCFlags.VaultKeeper, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleVoidStorageUnlock - {0} not found or player can't interact with it.", unlockVoidStorage.Npc.ToString());
                 return;
@@ -42,7 +42,7 @@ namespace Game
             Player player = GetPlayer();
 
             Creature unit = player.GetNPCIfCanInteractWith(queryVoidStorage.Npc, NPCFlags.Transmogrifier | NPCFlags.VaultKeeper, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleVoidStorageQuery - {0} not found or player can't interact with it.", queryVoidStorage.Npc.ToString());
                 SendPacket(new VoidStorageFailed());
@@ -81,7 +81,7 @@ namespace Game
             Player player = GetPlayer();
 
             Creature unit = player.GetNPCIfCanInteractWith(voidStorageTransfer.Npc, NPCFlags.VaultKeeper, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleVoidStorageTransfer - {0} not found or player can't interact with it.", voidStorageTransfer.Npc.ToString());
                 return;
@@ -106,13 +106,13 @@ namespace Game
                 for (byte i = InventorySlots.BagStart; i < InventorySlots.BagEnd; i++)
                 {
                     Bag bag = player.GetBagByPos(i);
-                    if (bag)
+                    if (bag != null)
                         freeBagSlots += bag.GetFreeSlots();
                 }
                 int inventoryEnd = InventorySlots.ItemStart + _player.GetInventorySlotCount();
                 for (byte i = InventorySlots.ItemStart; i < inventoryEnd; i++)
                 {
-                    if (!player.GetItemByPos(InventorySlots.Bag0, i))
+                    if (player.GetItemByPos(InventorySlots.Bag0, i) == null)
                         ++freeBagSlots;
                 }
             }
@@ -135,7 +135,7 @@ namespace Game
             for (int i = 0; i < voidStorageTransfer.Deposits.Length; ++i)
             {
                 Item item = player.GetItemByGuid(voidStorageTransfer.Deposits[i]);
-                if (!item)
+                if (item == null)
                 {
                     Log.outDebug(LogFilter.Network, "WORLD: HandleVoidStorageTransfer - {0} {1} wants to deposit an invalid item ({2}).", player.GetGUID().ToString(), player.GetName(), voidStorageTransfer.Deposits[i].ToString());
                     continue;
@@ -200,7 +200,7 @@ namespace Game
             Player player = GetPlayer();
 
             Creature unit = player.GetNPCIfCanInteractWith(swapVoidItem.Npc, NPCFlags.VaultKeeper, NPCFlags2.None);
-            if (!unit)
+            if (unit == null)
             {
                 Log.outDebug(LogFilter.Network, "WORLD: HandleVoidSwapItem - {0} not found or player can't interact with it.", swapVoidItem.Npc.ToString());
                 return;