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diff --git a/game/shared/econ/econ_item_constants.h b/game/shared/econ/econ_item_constants.h
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+++ b/game/shared/econ/econ_item_constants.h
@@ -0,0 +1,965 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#ifndef ACTUAL_ECON_ITEM_CONSTANTS_H		// ECON_ITEM_CONSTANTS_H is used by src/common/econ_item_view.h
+#define ACTUAL_ECON_ITEM_CONSTANTS_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+//=============================================================================
+// To avoid #include dependency chains, this file should
+// contain only constants that do not depend on other 
+// header files.
+// This file is #included in cbase.h to allow schema compiles
+// to use these constants to ensure correlation between 
+// code data structures and database entries
+//=============================================================================
+
+typedef	uint32		item_price_t;						// this is the type that is used to hold currency values for transactions! don't change this without changing the relevant code/databases/etc.
+typedef uint8		item_transaction_quantity_t;
+
+class CLocalizationProvider;
+
+enum { kLocalizedPriceSizeInChararacters = 64 };
+
+//-----------------------------------------------------------------------------
+// Econ Item testing
+//-----------------------------------------------------------------------------
+enum testitem_itemtypes_t
+{
+	TI_TYPE_UNKNOWN = -1,
+
+	TI_TYPE_WEAPON = 0,
+	TI_TYPE_HEADGEAR,
+	TI_TYPE_MISC1,
+	TI_TYPE_MISC2,
+
+	TI_TYPE_COUNT,
+};
+#define TESTITEM_DEFINITIONS_BEGIN_AT		40000
+
+//-----------------------------------------------------------------------------
+// Type IDs for economy classes. These are part of the client-GC protocol and
+// should not change if it can be helped
+//-----------------------------------------------------------------------------
+enum EEconTypeID
+{
+	k_EEconTypeItem							=1,
+	k_EEconTypePlayerInfo					=2,
+	k_EEconTypeClaimCode					=3,
+	k_EEconTypeRecipe						=5,
+	k_EEconTypeGameAccountClient			=7,
+	k_EEconTypeGameAccount					=8,
+	k_EEconTypeDuelSummary					=19,
+	k_EEconTypeExperiment					=20,
+	k_EEconTypeMapContribution				=28,
+	k_EEconTypeGameServerAccount			=29,
+	k_EEconTypeCoachRating					=30,
+//	k_EEconTypeEquipInstance				=31,		// DEPRECATED
+	k_EEconTypeSelectedItemPreset			=35,
+	k_EEconTypeItemPresetInstance			=36,
+	k_EEconTypeGameAccountForGameServers	=37,
+	k_EEConTypeWarData						=38,
+	k_EEConTypeLadderData					=39,
+	k_EEConTypeMatchResultPlayerInfo		=40,
+	k_EEconTypeXPSource						=41,
+	k_EEconTypeNotification					=42,
+};
+
+//-----------------------------------------------------------------------------
+// Actions for the ItemAudit table
+//-----------------------------------------------------------------------------
+// WARNING!!! Values stored in DB. Do not renumber!
+enum EItemAction
+{
+	k_EItemActionInvalid					 = -1,
+	k_EItemActionGSCreate					 = 0,
+	k_EItemActionUnpurchase					 = 1,
+	k_EItemActionDelete						 = 2,
+	k_EItemActionAwardAchievement			 = 3,
+	k_EItemActionBanned						 = 4,
+	k_EItemActionQuantityChanged			 = 5,
+	k_EItemActionRestored					 = 6,
+	k_EItemActionAwardTime					 = 7,
+	k_EItemActionManualCreate				 = 8,
+	k_EItemActionDrop						 = 9,
+	k_EItemActionPickUp						 = 10,
+	k_EItemActionCraftDestroy				 = 11,
+	k_EItemActionCraftCreate				 = 12,
+	k_EItemActionLimitExceeded				 = 13,
+	k_EItemActionPurchase					 = 14,
+	k_EItemActionNameChanged_Add			 = 15,
+	k_EItemActionUnlockCrate_Add			 = 16,
+	k_EItemActionPaintItem_Add				 = 17,
+	k_EItemActionAutoGrantItem				 = 18,
+	k_EItemActionCrossGameAchievement		 = 19,
+	k_EItemActionAddItemToSocket_Add		 = 20,
+	k_EItemActionAddSocketToItem_Add		 = 21,
+	k_EItemActionRemoveSocketItem_Add		 = 22,
+	k_EItemActionCustomizeItemTexture_Add	 = 23,
+	k_EItemActionItemTraded_Add				 = 24,
+	k_EItemActionUseItem					 = 25,
+	k_EItemActionAwardGift_Receiver			 = 26,
+	k_EItemActionNameChanged_Remove			 = 27,
+	k_EItemActionUnlockCrate_Remove			 = 28,
+	k_EItemActionPaintItem_Remove			 = 29,
+	k_EItemActionAddItemToSocket_Remove		 = 30,
+	k_EItemActionAddSocketToItem_Remove		 = 31,
+	k_EItemActionRemoveSocketItem_Remove	 = 32,
+	k_EItemActionCustomizeItemTexture_Remove = 33,
+	k_EItemActionItemTraded_Remove			 = 34,
+	k_EItemActionUnpackItemBundle			 = 35,
+	k_EItemActionCreateItemFromBundle		 = 36,
+	k_EItemActionAwardStorePromotionItem	 = 37,
+	k_EItemActionConvertItem				 = 38,
+	k_EItemActionEarnedItem					 = 39,
+	k_EItemActionAwardGift_Giver			 = 40,
+	k_EItemActionRefundedItem				 = 41,
+	k_EItemActionAwardThirdPartyPromo		 = 42,
+	k_EItemActionRemoveItemName_Remove		 = 43,
+	k_EItemActionRemoveItemName_Add			 = 44,
+	k_EItemActionRemoveItemPaint_Remove		 = 45,
+	k_EItemActionRemoveItemPaint_Add		 = 46,
+	k_EItemActionHalloweenDrop				 = 47,
+	k_EItemActionSteamWorkshopContributor	 = 48,
+	k_EItemActionManualOwnershipChange		 = 49,			// when we have bad bugs that corrupt item data and have to fix up rows in the DB by hand
+	k_EItemActionSupportDelete				 = 50,
+	k_EItemActionSupportCreatedByUndo		 = 51,
+	k_EItemActionSupportDeletedByUndo		 = 52,
+	k_EItemActionSupportQuantityChangedByUndo = 53,
+	k_EItemActionSupportRename_Add			 = 54,
+	k_EItemActionSupportRename_Remove		 = 55,
+	k_EItemActionSupportDescribe_Add		 = 56,
+	k_EItemActionSupportDescribe_Remove		 = 57,
+
+	k_EItemActionStrangePartApply_Add		 = 58,
+	k_EItemActionStrangePartApply_Remove	 = 59,
+	k_EItemActionStrangeScoreReset_Add		 = 60,
+	k_EItemActionStrangeScoreReset_Remove	 = 61,
+	k_EItemActionStrangePartRemove_Add		 = 62,
+	k_EItemActionStrangePartRemove_Remove	 = 63,
+
+	k_EItemActionSupportStrangify_Add		 = 64,
+	k_EItemActionSupportStrangify_Remove	 = 65,
+
+	k_EItemActionUpgradeCardApply_Add		 = 66,
+	k_EItemActionUpgradeCardApply_Remove	 = 67,
+	k_EItemActionUpgradeCardRemove_Add		 = 68,
+	k_EItemActionUpgradeCardRemove_Remove	 = 69,
+
+	k_EItemActionStrangeRestrictionApply_Add	= 70,
+	k_EItemActionStrangeRestrictionApply_Remove	= 71,
+	k_EItemActionTransmogrify_Add				= 72,
+	k_EItemActionTransmogrify_Remove			= 73,
+	k_EItemActionHalloweenSpellPageAdd_Add		= 74,
+	k_EItemActionHalloweenSpellPageAdd_Remove	= 75,
+
+	k_EItemActionDev_ClientLootListRoll		 = 90,
+
+	k_EItemActionGiftWrap_Add				 = 100,
+	k_EItemActionGiftWrap_Remove			 = 101,
+	k_EItemActionGiftDelivery_Add			 = 102,
+	k_EItemActionGiftDelivery_Remove		 = 103,
+	k_EItemActionGiftUnwrap_Add				 = 104,
+	k_EItemActionGiftUnwrap_Remove			 = 105,
+	k_EItemActionPackageItem				 = 106,
+	k_EItemActionPackageItem_Revoked		 = 107,
+	k_EItemActionHandleMapToken			 	 = 108,
+	k_EItemActionCafeOrSchoolItem_Remove	 = 109,
+	k_EItemActionVACBanned_Remove			 = 110,
+	k_EItemActionUpgradeThirdPartyPromo		 = 111,
+	k_EItemActionExpired					 = 112,
+	k_EItemActionTradeRollback_Add			 = 113,
+	k_EItemActionTradeRollback_Remove		 = 114,
+	k_EItemActionCDKeyGrant					 = 115,
+	k_EItemActionCDKeyRevoke				 = 116,
+	k_EItemActionWeddingRing_Add			 = 117,
+	k_EItemActionWeddingRing_Remove			 = 118,
+	k_EItemActionWeddingRing_AddPartner		 = 119,
+	k_EItemActionEconSetUnowned				 = 120,
+	k_EItemActionEconSetOwned				 = 121,
+	k_EItemActionStrangifyItem_Add			 = 122,
+	k_EItemActionStrangifyItem_Remove		 = 123,
+	k_EItemActionConsumeItem_Consume_ToolRemove		= 124,
+	k_EItemActionConsumeItem_Consume_ToolAdd		= 125,
+	k_EItemActionConsumeItem_Consume_InputRemove	= 126,
+	k_EItemActionConsumeItem_Complete_OutputAdd		= 127,	
+	k_EItemActionConsumeItem_Complete_ToolRemove	= 128,
+	k_EItemActionItemEaterRecharge_Add			 = 129,
+	k_EItemActionItemEaterRecharge_Remove		 = 130,
+
+	k_EItemActionRemoveItemCraftIndex_Remove = 150,
+	k_EItemActionRemoveItemCraftIndex_Add	 = 151,
+	k_EItemActionRemoveItemMakersMark_Remove = 152,				// early versions of this will be in the database as 150
+	k_EItemActionRemoveItemMakersMark_Add	 = 153,				// early versions of this will be in the database as 151 because I am a terrible person
+
+	k_EItemActionCollectItem_CollectedItem			 = 154,
+	k_EItemActionCollectItem_UpdateCollection		 = 155,
+	k_EItemActionCollectItem_RemoveCollection		 = 156,
+	k_EItemActionCollectItem_RedeemCollectionReward	 = 157,
+
+	k_EItemActionPreviewItem_BeginPreviewPeriod  = 158,
+	k_EItemActionPreviewItem_EndPreviewPeriodExpired	= 159,
+	k_EItemActionPreviewItem_EndPreviewPeriodItemBought	= 160,
+
+	k_EItemActionPeriodicScoreReward_Add	 = 170,
+	k_EItemActionPeriodicScoreReward_Remove	 = 171,
+
+	k_EItemActionMvM_ChallengeCompleted_RemoveTicket				= 180,			// we completed a challenge and consumed this ticket as the cost
+	k_EItemActionMvM_ChallengeCompleted_GrantBadge					= 181,			// we completed a challenge and granted the player a badge because they didn't have one
+	k_EItemActionMvM_ChallengeCompleted_UpdateBadgeStamps_Remove	= 182,			// we completed a challenge and we're crossing an entry off our badge checklist (this may also reset the badge back down to empty if this was the last line item)
+	k_EItemActionMvM_ChallengeCompleted_UpdateBadgeStamps_Add		= 183,			// (other half of the above)
+	k_EItemActionMvM_ChallengeCompleted_GrantMissionCompletionLoot	= 184,			// we completed a mission in MvM
+	k_EItemActionMvM_RemoveSquadSurplusVoucher						= 185,
+	k_EItemActionMvM_AwardSquadSurplus_Receiver						= 186,
+	k_EItemActionMvM_AwardSquadSurplus_Giver						= 187,
+	k_EItemActionMvM_ChallengeCompleted_GrantTourCompletionLoot		= 188,			// we completed a full tour in MvM
+	k_EItemActionMvM_AwardHelpANoobBonus_Helper						= 189,
+
+	k_EItemActionHalloween_UpdateMerasmusLootLevel_Add				= 200,			// set the level of the merasmus loot
+	k_EItemActionHalloween_UpdateMerasmusLootLevel_Remove			= 201,			
+
+	k_EItemActionRemoveItemKillStreak_Remove = 202,
+	k_EItemActionRemoveItemKillStreak_Add	 = 203,
+
+	k_EItemActionSupportAddOrModifyAttribute_Remove = 204,
+	k_EItemActionSupportAddOrModifyAttribute_Add	= 205,
+
+	k_EItemActionSpyVsEngyWar_JoinedWar	= 206,
+
+	k_EItemAction_UpdateDuckBadgeLevel_Add			= 207,
+	k_EItemAction_UpdateDuckBadgeLevel_Remove		= 208,
+
+	k_EItemAction_QuestDrop							= 209,
+
+	k_EItemAction_OperationPass_Add					= 210,
+
+	k_EItemActionMarket_Add							= 211,
+	k_EItemActionMarket_Remove						= 212,
+
+	k_EItemAction_QuestComplete_Reward				= 213,
+	k_EItemAction_QuestComplete_Remove				= 214,
+
+	k_EItemAction_QuestLoaner_Add					= 215,
+	k_EItemActionStrangeCountTransfer_Add			= 216,
+	k_EItemActionStrangeCountTransfer_Remove		= 217,
+
+	k_EItemActionCraftCollectionUpgrade_Add			= 218,
+	k_EItemActionCraftCollectionUpgrade_Remove		= 219,
+
+	k_EItemActionCraftHalloweenOffering_Add			= 220,
+	k_EItemActionCraftHalloweenOffering_Remove		= 221,
+
+	k_EItemActionRemoveItemGiftedBy_Remove			= 222,
+	k_EItemActionRemoveItemGiftedBy_Add				= 223,
+
+	k_EItemActionAddParticleVerticalAttr_Remove		= 224,
+	k_EItemActionAddParticleVerticalAttr_Add		= 225,
+
+	k_EItemActionAddParticleUseHeadOriginAttr_Remove = 226,
+	k_EItemActionAddParticleUseHeadOriginAttr_Add	= 227,
+
+	k_EItemActionRemoveItemDynamicAttr_Add			= 228,
+	k_EItemActionRemoveItemDynamicAttr_Remove		= 229,
+
+	k_EItemActionCraftStatClockTradeUp_Add			= 230,
+	k_EItemActionCraftStatClockTradeUp_Remove		= 231,
+
+	k_EItemActionViralCompetitiveBetaPass_Drop		= 232,
+
+	k_EItemActionSupportDeleteAttribute_Remove		= 233,
+	k_EItemActionSupportDeleteAttribute_Add			= 234,
+
+	// Let's be consistent with the underscores please.
+	// k_EItemActionYourNewAction, not k_EItemAction_YourNewAction
+	// Yes, it matters. See PchLocalizedNameFromEItemAction for why.
+};
+extern const char		*PchNameFromEItemAction( EItemAction eAction );
+extern const char		*PchNameFromEItemActionUnsafe( EItemAction eAction );
+
+extern bool BIsActionCreative( EItemAction );
+extern bool BIsActionDestructive( EItemAction );
+
+enum EItemActionMissingBehavior { kEItemAction_FriendlyNameLookup_ReturnNULLIfMissing, kEItemAction_FriendlyNameLookup_ReturnDummyStringIfMissing };
+extern const char		*PchFriendlyNameFromEItemAction( EItemAction eAction, EItemActionMissingBehavior eMissingBehavior );
+extern const char		*PchLocalizedNameFromEItemAction( EItemAction eAction, CLocalizationProvider &localizationProvider );
+
+//-----------------------------------------------------------------------------
+// Purpose: Used to pass audit actions to asset servers for SetUnowned and 
+//			SetOwned methods. 
+//-----------------------------------------------------------------------------
+enum EEconOwnershipAction
+{
+	k_EEconOwnershipAction_Invalid = 0,
+
+	k_EEconOwnershipAction_TradeBase = 100,
+	k_EEconOwnershipAction_TradeCommit = 101,		// precommit and docommit step of a trade. Reference is trade ID
+	k_EEconOwnershipAction_TradeRollback = 102,		// cancelcommit and rollbackcommit step of a trade. Reference is trade ID
+};
+
+// old
+enum eEconItemFlags_Deprecated
+{
+	kDeprecated_EconItemFlag_AchievementGrantedItem	= 1 << 0,
+	kDeprecated_EconItemFlag_CannotTrade				= 1 << 1,
+	kDeprecated_EconItemFlag_Purchased				= 1 << 2,
+	kDeprecated_EconItemFlag_CannotBeUsedInCrafting	= 1 << 3,
+	kDeprecated_EconItemFlag_Promotion				= 1 << 4,
+};
+
+//-----------------------------------------------------------------------------
+// Periodic score events
+//-----------------------------------------------------------------------------
+enum eEconPeriodicScoreEvents
+{
+	kPeriodicScoreEvent_GiftsDistributed	= 0,
+	kPeriodicScoreEvent_DuelsWon			= 1,
+	kPeriodicScoreEvent_MapStampsPurchased	= 2,
+};
+
+//-----------------------------------------------------------------------------
+// Flags for CEconItem
+//-----------------------------------------------------------------------------
+// WARNING!!! Values stored in DB.  DO NOT CHANGE EXISTING VALUES.  Add values to the end.
+enum eEconItemFlags
+{
+	kEconItemFlag_CannotTrade									= 1 << 0,
+	kEconItemFlag_CannotBeUsedInCrafting						= 1 << 1,
+	kEconItemFlag_CanBeTradedByFreeAccounts						= 1 << 2,
+	kEconItemFlag_NonEconomy									= 1 << 3,		// used for items that are meant to not interact in the economy -- these can't be traded, gift-wrapped, crafted, etc.
+	kEconItemFlag_PurchasedAfterStoreCraftabilityChanges2012	= 1 << 4,		// cosmetic items coming from the store are now usable in crafting; this flag is set on all items purchased from the store after this change was made
+
+#ifdef CLIENT_DLL
+#ifdef TF_CLIENT_DLL
+	kEconItemFlagClient_ForceBlueTeam							= 1 << 5,
+#endif // TF_CLIENT_DLL
+	kEconItemFlagClient_StoreItem								= 1 << 6,
+	kEconItemFlagClient_Preview									= 1 << 7,		// only set on the client; means "this item is being previewed"
+#endif // CLIENT_DLL
+
+	// combination of the above flags used in code
+	kEconItemFlags_CheckFlags_AllGCFlags						= kEconItemFlag_CannotTrade | kEconItemFlag_CannotBeUsedInCrafting | kEconItemFlag_CanBeTradedByFreeAccounts | kEconItemFlag_NonEconomy | kEconItemFlag_PurchasedAfterStoreCraftabilityChanges2012,
+};
+
+//-----------------------------------------------------------------------------
+// Origin for an item for CEconItem
+//-----------------------------------------------------------------------------
+// WARNING!!! Values stored in DB.  DO NOT CHANGE EXISTING VALUES.  Add values to the end.
+enum eEconItemOrigin
+{
+	kEconItemOrigin_Invalid = -1,				// should never be stored in the DB! used to indicate "invalid" for in-memory objects only
+
+	kEconItemOrigin_Drop = 0,
+	kEconItemOrigin_Achievement,
+	kEconItemOrigin_Purchased,
+	kEconItemOrigin_Traded,
+	kEconItemOrigin_Crafted,
+	kEconItemOrigin_StorePromotion,
+	kEconItemOrigin_Gifted,
+	kEconItemOrigin_SupportGranted,
+	kEconItemOrigin_FoundInCrate,
+	kEconItemOrigin_Earned,
+	kEconItemOrigin_ThirdPartyPromotion,
+	kEconItemOrigin_GiftWrapped,
+	kEconItemOrigin_HalloweenDrop,
+	kEconItemOrigin_PackageItem,
+	kEconItemOrigin_Foreign,
+	kEconItemOrigin_CDKey,
+	kEconItemOrigin_CollectionReward,
+	kEconItemOrigin_PreviewItem,
+	kEconItemOrigin_SteamWorkshopContribution,
+	kEconItemOrigin_PeriodicScoreReward,
+	kEconItemOrigin_MvMMissionCompletionReward,			// includes loot from both "mission completed" and "tour completed" events
+	kEconItemOrigin_MvMSquadSurplusReward,
+	kEconItemOrigin_RecipeOutput,
+	kEconItemOrigin_QuestDrop,
+	kEconItemOrigin_QuestLoanerItem,
+	kEconItemOrigin_TradeUp,
+	kEconItemOrigin_ViralCompetitiveBetaPassSpread,
+
+	kEconItemOrigin_Max,
+};
+extern const char		*PchNameFromeEconItemOrigin( eEconItemOrigin eOrigin );
+
+// The Steam backend representation of a unique item index
+typedef uint64	itemid_t;
+typedef uint16	item_definition_index_t;
+typedef uint16	attrib_definition_index_t;
+typedef uint32	attrib_value_t;
+typedef uint32	operation_definition_index_t;
+typedef uint8	war_definition_index_t;
+typedef uint8	war_side_t;
+
+// Misc typedefs for clarity.
+typedef uint32	equip_region_mask_t;
+typedef uint8	style_index_t;
+
+const uint64 INVALID_ITEM_ID							= (itemid_t)-1;
+const item_definition_index_t INVALID_ITEM_DEF_INDEX	= ((item_definition_index_t)-1);
+const attrib_definition_index_t INVALID_ATTRIB_DEF_INDEX= ((attrib_definition_index_t)-1);
+const war_definition_index_t INVALID_WAR_DEF_INDEX		= ((war_definition_index_t)-1);
+const war_side_t INVALID_WAR_SIDE						= ((war_side_t)-1);
+// Hard code the pyro/heavy stuff. Must be in sync with the schema.
+const war_definition_index_t PYRO_VS_HEAVY_WAR_DEF_INDEX= ((war_definition_index_t)0);
+const war_side_t PYRO_VS_HEAVY_WAR_SIDE_HEAVY = ((war_side_t)0);
+const war_side_t PYRO_VS_HEAVY_WAR_SIDE_PYRO = ((war_side_t)1);
+
+//-----------------------------------------------------------------------------
+
+// Standard/default backpack size
+#define DEFAULT_NUM_BACKPACK_SLOTS						300
+#define DEFAULT_NUM_BACKPACK_SLOTS_FREE_TRIAL_ACCOUNT	50
+#define MAX_NUM_BACKPACK_SLOTS							2000
+
+// Current item level range
+#define MIN_ITEM_LEVEL					0
+#define MAX_ITEM_LEVEL					100
+
+// Maximum number of attributes allowed on a single item
+#define MAX_ATTRIBUTES_PER_ITEM					15
+// The maximum length of a single attribute's description
+//	divide by locchar_t, so we can ensure 192 bytes, whether that's 128 wchars on client or 256 utf-8 bytes on gc
+#define MAX_ATTRIBUTE_DESCRIPTION_LENGTH		( 256 / sizeof( locchar_t ) )
+
+// The maximum length of an item's name
+#define MAX_ITEM_NAME_LENGTH					128
+#define MAX_ITEM_DESC_LENGTH					256
+// The maximum length of an item description. (Extra +1 line is for the base item type line)
+#define MAX_ITEM_DESCRIPTION_LENGTH				((MAX_ATTRIBUTES_PER_ITEM+1) * MAX_ATTRIBUTE_DESCRIPTION_LENGTH)
+
+// For custom user-naming of econ items.
+#define MAX_ITEM_CUSTOM_NAME_LENGTH				40
+#define MAX_ITEM_CUSTOM_NAME_DATABASE_SIZE		((4 * MAX_ITEM_CUSTOM_NAME_LENGTH) + 1)	// Ensures we can store MAX_ITEM_CUSTOM_NAME_LENGTH
+																						// characters worth of obscure unicode characters in UTF8
+#define MAX_ITEM_CUSTOM_DESC_LENGTH				80
+#define MAX_ITEM_CUSTOM_DESC_DATABASE_SIZE		((4 * MAX_ITEM_CUSTOM_DESC_LENGTH) + 1)
+
+#define MAX_KILLCAM_MESSAGE_LENGTH				40
+#define MAX_KILLCAM_MESSAGE_DATABASE_SIZE		((4 * MAX_KILLCAM_MESSAGE_LENGTH) + 1)
+
+// max length in the DB for claim codes
+#define MAX_CLAIM_CODE_LENGTH					128	
+
+// The item definition index reserved for the preview item
+#define PREVIEW_ITEM_DEFINITION_INDEX			(item_definition_index_t)-1
+
+// The number of items to work on in a job before checking if a yield is necessary
+#define MAX_ITEMS_BEFORE_YIELD					50
+
+// TF team-color paints (moved from econ_item_view.h)
+#define RGB_INT_RED  12073019
+#define RGB_INT_BLUE 5801378
+
+// Custom textures
+const int k_nCustomImageSize = 128;
+const int k_nMaxCustomImageFileSize = k_nCustomImageSize*k_nCustomImageSize*4 + 4*1024; // Is this about right?
+
+//-----------------------------------------------------------------------------
+// Purpose: Quality types of items
+//-----------------------------------------------------------------------------
+typedef int32 entityquality_t;
+enum EEconItemQuality
+{
+	AE_UNDEFINED = -1,
+
+	AE_NORMAL = 0,
+	AE_RARITY1 = 1,			// Genuine
+	AE_RARITY2 = 2,			// Customized (unused)
+	AE_VINTAGE = 3,			// Vintage has to stay at 3 for backwards compatibility
+	AE_RARITY3,				// Artisan
+	AE_UNUSUAL,				// Unusual
+	AE_UNIQUE,
+	AE_COMMUNITY,
+	AE_DEVELOPER,
+	AE_SELFMADE,
+	AE_CUSTOMIZED,			// (unused)
+	AE_STRANGE,
+	AE_COMPLETED,
+	AE_HAUNTED,
+	AE_COLLECTORS,
+	AE_PAINTKITWEAPON,
+
+	AE_RARITY_DEFAULT,
+	AE_RARITY_COMMON,
+	AE_RARITY_UNCOMMON,
+	AE_RARITY_RARE,
+	AE_RARITY_MYTHICAL,
+	AE_RARITY_LEGENDARY,
+	AE_RARITY_ANCIENT,
+
+	AE_MAX_TYPES,
+	AE_DEPRECATED_UNIQUE = 3,
+};
+
+
+//-----------------------------------------------------------------------------
+// Purpose: colors used in the display of attributes
+//-----------------------------------------------------------------------------
+enum attrib_colors_t
+{
+	ATTRIB_COL_LEVEL = 0,
+	ATTRIB_COL_NEUTRAL,
+	ATTRIB_COL_POSITIVE,
+	ATTRIB_COL_NEGATIVE,
+	ATTRIB_COL_ITEMSET_NAME,
+	ATTRIB_COL_ITEMSET_EQUIPPED,
+	ATTRIB_COL_ITEMSET_MISSING,
+	ATTRIB_COL_BUNDLE_ITEM,
+	ATTRIB_COL_LIMITED_USE,
+	ATTRIB_COL_component_flags,
+	ATTRIB_COL_LIMITED_QUANTITY,
+
+	ATTRIB_COL_RARITY_DEFAULT,
+	ATTRIB_COL_RARITY_COMMON,
+	ATTRIB_COL_RARITY_UNCOMMON,
+	ATTRIB_COL_RARITY_RARE,
+	ATTRIB_COL_RARITY_MYTHICAL,
+	ATTRIB_COL_RARITY_LEGENDARY,
+	ATTRIB_COL_RARITY_ANCIENT,
+	ATTRIB_COL_RARITY_IMMORTAL,
+	ATTRIB_COL_RARITY_ARCANA,
+
+	ATTRIB_COL_STRANGE,
+	ATTRIB_COL_UNUSUAL,
+
+	NUM_ATTRIB_COLORS,
+};
+
+
+#define AE_USE_SCRIPT_VALUE			9999		// Can't be -1, due to unsigned ints used on the backend
+
+const char *EconQuality_GetQualityString( EEconItemQuality eQuality );
+const char *EconQuality_GetColorString( EEconItemQuality eQuality );
+const char *EconQuality_GetLocalizationString( EEconItemQuality eQuality );
+EEconItemQuality EconQuality_GetQualityFromString( const char* pszQuality );
+
+// Sort order for rarities
+int EconQuality_GetRarityScore( EEconItemQuality eQuality );
+
+extern attrib_colors_t GetAttribColorIndexForName( const char* pszName );
+extern const char *GetColorNameForAttribColor( attrib_colors_t unAttribColor );
+extern const char *GetHexColorForAttribColor( attrib_colors_t unAttribColor );
+
+// Utility function that'll get you an item quality from a string
+entityquality_t GetItemQualityFromString( const char *sQuality );
+
+enum recipecategories_t
+{
+	RECIPE_CATEGORY_CRAFTINGITEMS = 0,
+	RECIPE_CATEGORY_COMMONITEMS,
+	RECIPE_CATEGORY_RAREITEMS,
+	RECIPE_CATEGORY_SPECIAL,
+
+	NUM_RECIPE_CATEGORIES
+};
+extern const char *g_szRecipeCategoryStrings[NUM_RECIPE_CATEGORIES];
+
+//-----------------------------------------------------------------------------
+// Kill eater support.
+// Strange counters and strange parts
+//-----------------------------------------------------------------------------
+#if defined( TF_DLL ) || defined( TF_GC_DLL ) || defined( TF_CLIENT_DLL )
+enum kill_eater_event_t
+{
+	kKillEaterEvent_PlayerKill = 0,			// default; items with no event type specified use this
+	kKillEaterEvent_UberActivated,
+	kKillEaterEvent_PlayerKillAssist,
+	kKillEaterEvent_PlayerKillsBySentry,	// your sentry you built with this item killed someone
+	kKillEaterEvent_PeeVictims,				// this game is great
+	kKillEaterEvent_BackstabAbsorbed,		// you're a sniper and you got a spy to stab your Razorback
+	kKillEaterEvent_HeadsTaken,				// this also tracks kills but with different flavor text
+	kKillEaterEvent_Humiliations,			// fish kills!
+	kKillEaterEvent_GiftsGiven,				// number of gifts given
+	kKillEaterEvent_DeathsFeigned,			// number of deaths successfully feigned with the Dead Ringer
+	kKillEaterEvent_ScoutKill,				// (part)
+	kKillEaterEvent_SniperKill,				// (part)
+	kKillEaterEvent_SoldierKill,			// (part)
+	kKillEaterEvent_DemomanKill,			// (part)
+	kKillEaterEvent_HeavyKill,				// (part)
+	kKillEaterEvent_PyroKill,				// (part)
+	kKillEaterEvent_SpyKill,				// (part)
+	kKillEaterEvent_EngineerKill,			// (part)
+	kKillEaterEvent_MedicKill,				// (part)
+	kKillEaterEvent_BuildingDestroyed,		// (part)
+	kKillEaterEvent_ProjectileReflect,		// (part)
+	kKillEaterEvent_HeadshotKill,			// (part)
+	kKillEaterEvent_AirborneEnemyKill,		// (part) (enemy is in the air when they die)
+	kKillEaterEvent_GibKill,				// (part)
+	kKillEaterEvent_BuildingSapped,			// a sapper was doing damage to this building while it was destroyed
+	kKillEaterEvent_PlayerTickle,			// we used our comedy holiday gloves to force someone else to laugh
+	kKillEaterEvent_PlayerKillByBootStomp,	// we killed a player by transferring our falling damage onto them
+	kKillEaterEvent_PlayerKillDuringFullMoon,				// (part) we killed a player during the full moon holiday event (GC-updated)
+	kKillEaterEvent_PlayerKillStartDomination,				// (part) we killed a player and this kill was enough to start our domination of them
+	kKillEaterEvent_PlayerKillAlreadyDominated,				// (part) we killed a player with this weapon that we were already dominating
+	kKillEaterEvent_PlayerKillRevenge,						// (part) we killed a player with this weapon when that player was dominating us
+	kKillEaterEvent_PlayerKillPosthumous,					// (part) we killed a player after we were already dead (afterburn, stray rocket, etc.)
+	kKillEaterEvent_BurningAllyExtinguished,				// (part) we used urine/milk/flamethrower/whatever to put out the fire on an ally that was burning
+	kKillEaterEvent_PlayerKillCritical,						// (part) we killed a player with a shot that was a critical
+	kKillEaterEvent_PlayerKillWhileExplosiveJumping,		// (part) we killed a player while we were rocket/sticky-jumping
+	kKillEaterEvent_PlayerKillFriend,						// (part) we killed a player who is a Steam friend (GC-updated)
+	kKillEaterEvent_SapperDestroyed,						// (part) we destroyed a sapper that was on a friendly building
+	kKillEaterEvent_InvisibleSpiesKilled,					// (part) we killed an invisible spy
+	kKillEaterEvent_MedicsWithFullUberKilled,				// (part) we killed a fully ubered medic
+	kKillEaterEvent_RobotsDestroyed,						// (part) we killed a robot in MvM
+	kKillEaterEvent_MinibossRobotsDestroyed,				// (part) we killed a miniboss robot in MvM
+	kKillEaterEvent_RobotsDestroyedAfterPenetration,		// (part) we killed a robot with a shot that had already penetrated another robot
+	kKillEaterEvent_RobotHeadshotKills,						// (part) like kKillEaterEvent_HeadshotKill, but only for robots
+	kKillEaterEvent_RobotsSlowed,							// (part) we hit some robots with Jarate and now they're slow
+	kKillEaterEvent_KillWhileLowHealth,						// (part) we killed someone while we had <10% max health
+	kKillEaterEvent_HalloweenKill,							// (part) we killed someone during the Halloween holiday
+	kKillEaterEvent_HalloweenKillRobot,						// (part) we killed a robot in MvM during the Halloween holiday
+	kKillEaterEvent_DefenderKill,							// (part) we killed someone carrying the intel, pushing the cart, or capping a point
+	kKillEaterEvent_UnderwaterKill,							// (part) we killed someone who was completely submerged
+	kKillEaterEvent_KillWhileUbercharged,					// (part) we killed someone while we were invulnerable
+	kKillEaterEvent_FoodEaten,								// We ate our food
+	kKillEaterEvent_BannersDeployed,						// We deployed a banner buff
+	kKillEaterEvent_NEGATIVE_SniperShotsMissed,				// (part) we shot our sniper rifle and didnt hit anything
+	kKillEaterEvent_NEGATIVE_UbersDropped,					// (part) we died with a full ubercharge
+	kKillEaterEvent_NEGATIVE_DeathsWhileCarryingBuilding,	// (part) we died while carrying a building
+	kKillEaterEvent_NEGATIVE_DeathsFromCratering,			// (part) we died from cratering
+	kKillEaterEvent_NEGATIVE_DeathsFromEnvironment,			// (part) we died from environmental damage
+	kKillEaterEvent_NEGATIVE_Deaths,						// (part) we died :(
+	kKillEaterEvent_TimeCloaked,							// Time we are cloaked
+	kKillEaterEvent_HealingProvided,						// Health Provided to Allies
+	kKillEaterEvent_TeleportsProvided,						// Teleports Provided to Allies
+	kKillEaterEvent_TanksDestroyed,							// (part) we dealt the killing blow to a tank in MvM
+	kKillEaterEvent_LongDistanceKill,						// (part) we dealt the killing blow (while alive) from far away
+	kKillEaterEvent_UniqueEvent__KilledAccountWithItem,					// (part) (unique event) how many individual accounts have we killed?
+//	kKillEaterEvent_UniqueEvent__PlayedWithAccountIDWhileWearingItem,	// (part) (unique event) how many individual accounts have we played a round with?
+	kKillEaterEvent_PointsScored,						// How many score points we've accumulated
+	kKillEaterEvent_DoubleDonks,						// Double-Donks scored with the loose cannon
+	kKillEaterEvent_TeammatesWhipped,					// Whipped Teammates with the Disciplinary Action
+	kKillEaterEvent_VictoryTimeKill,					// Kills while in Victory / Bonus Time
+	kKillEaterEvent_RobotScoutKill,				// (part)
+	kKillEaterEvent_RobotSniperKill,			// (part) Not yet shipped
+	kKillEaterEvent_RobotSoldierKill,			// (part) Not yet shipped
+	kKillEaterEvent_RobotDemomanKill,			// (part) Not yet shipped
+	kKillEaterEvent_RobotHeavyKill,				// (part) Not yet shipped
+	kKillEaterEvent_RobotPyroKill,				// (part) Not yet shipped
+	kKillEaterEvent_RobotSpyKill,				// (part)
+	kKillEaterEvent_RobotEngineerKill,			// (part) Not yet shipped
+	kKillEaterEvent_RobotMedicKill,				// (part) Not yet shipped
+	kKillEaterEvent_TauntKill,					// Taunt Kills
+	kKillEaterEvent_PlayersWearingUnusualKill,	// (part) we killed someone wearing an unusual hat (!)
+	kKillEaterEvent_BurningEnemyKill,			// (part) we killed someone who was on fire up until they died
+	kKillEaterEvent_KillstreaksEnded,			// (part) we killed someone who was on a killstreak
+	kKillEaterEvent_KillcamTaunts,				// (cosmetic part) we appeared wearing this item in the killcam taunting
+	kKillEaterEvent_DamageDealt,				// (part) we have dealt this much damage to people
+	kKillEaterEvent_FiresSurvived,				// (cosmetic part) we were lit on fire wearing this item and then the fire went out and we were still alive
+	kKillEaterEvent_AllyHealingDone,			// (part) we have healed this much (directly, so doesn't count Mad Milk, etc. because we lose the item pointer at some point); also ignores self heal (ie., Concheror buff, MvM upgrades)
+	kKillEaterEvent_PointBlankKills,			// (part) we killed someone while standing right next to them
+	kKillEaterEvent_PlayerKillsByManualControlOfSentry,	// Kills from wrangled a sentry
+	kKillEaterEvent_CosmeticKills,				// (cosmetic part) kills
+	kKillEaterEvent_FullHealthKills,			// (part) Kills while at fullhealth
+	kKillEaterEvent_TauntingPlayerKills,		// (part) Taunting Player Kills
+	kKillEaterEvent_Halloween_OverworldKills,
+	kKillEaterEvent_Halloween_UnderworldKills,
+	kKillEaterEvent_Halloween_MinigamesWon,
+	kKillEaterEvent_NonCritKills,				// part kills that are not crit or mini crit
+	kKillEaterEvent_PlayersHit,					// part
+	kKillEaterEvent_CosmeticAssists,			// Cosmetic part
+	kKillEaterEvent_CosmeticOperationContractsCompleted, // Operation Stat Tracker
+	kKillEaterEvent_CosmeticOperationKills, // Operation Stat Tracker
+	kKillEaterEvent_CosmeticOperationContractsPoints,
+	kKillEaterEvent_CosmeticOperationBonusPoints,
+	kKillEaterEvent_TauntsPerformed,			// Strange Taunts
+	kKillEaterEvent_InvasionKills,				// Kills During Invasion Event.  Locked after Operation
+	kKillEaterEvent_InvasionKillsOnMap01,
+	kKillEaterEvent_InvasionKillsOnMap02,
+	kKillEaterEvent_InvasionKillsOnMap03,
+	kKillEaterEvent_InvasionKillsOnMap04,
+	kKillEaterEvent_HalloweenSouls,				// Halloween
+	kKillEaterEvent_HalloweenContractsCompleted,
+	kKillEaterEvent_HalloweenOfferings,
+	kKillEaterEvent_PowerupBottlesUsed,
+
+	// NEW ENTRIES MUST BE ADDED AT THE BOTTOM
+};
+#else
+	// projects that actually want to implement kill-eater functionality will want to put their list somewhere around here,
+	// but unfortunately the base code relies on this specific definition being entry 0
+	static const uint32 kKillEaterEvent_PlayerKill = 0;
+#endif // defined( TF_DLL ) || defined( TF_GC_DLL ) || defined( TF_CLIENT_DLL )
+
+enum strange_event_restriction_t
+{
+	kStrangeEventRestriction_None = 0,				// default -- unassigned, all events pass
+	kStrangeEventRestriction_VictimSteamAccount,	// the victim must have a specific Steam ID
+#if defined( TF_DLL ) || defined( TF_GC_DLL ) || defined( TF_CLIENT_DLL )
+	kStrangeEventRestriction_Map,					// must be playing on a certain map when the event takes place
+	kStrangeEventRestriction_Competitive,			// must be playing in a competitive game
+#endif // defined( TF_DLL ) || defined( TF_GC_DLL ) || defined( TF_CLIENT_DLL )
+	kStrangeEventRestrictionCount
+};
+
+// Ugh -- these are shared between the GC and the client. Maybe #define is slightly better than
+// magic string literals?
+#define KILL_EATER_RANK_LEVEL_BLOCK_NAME		"KillEaterRank"
+
+#ifdef TF_DLL
+	class CTFWeaponBase *GetKilleaterWeaponFromDamageInfo( const class CTakeDamageInfo *pInfo );
+	// A specific CEconEntity caused a kill eater event to happen. For example, a weapon might cause a
+	// player kill event so we want to update the stats for that specific weapon.
+	void EconEntity_OnOwnerKillEaterEvent( class CEconEntity *pEconEntity, class CTFPlayer *pOwner, class CTFPlayer *pVictim, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+	void EconItemInterface_OnOwnerKillEaterEvent( class IEconItemInterface *pEconEntity, class CTFPlayer *pOwner, class CTFPlayer *pVictim, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+	void EconEntity_OnOwnerKillEaterEventNoPartner( class CEconEntity *pEconEntity, class CTFPlayer *pOwner, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+	void EconItemInterface_OnOwnerKillEaterEventNoPartner( class IEconItemInterface *pEconEntity, class CTFPlayer *pOwner, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+
+	void HatAndMiscEconEntities_OnOwnerKillEaterEvent( class CTFPlayer *pOwner, class CTFPlayer *pVictim, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+	void HatAndMiscEconEntities_OnOwnerKillEaterEventNoParter( class CTFPlayer *pOwner, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+
+	void EconEntity_NonEquippedItemKillTracking_NoPartner( class CTFPlayer *pOwner, item_definition_index_t iDefIndex, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+	void EconEntity_NonEquippedItemKillTracking_NoPartnerBatched( class CTFPlayer *pOwner, item_definition_index_t iDefIndex, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+	// Batching system for frequent events (ie., damage dealing). The game server will flush all batches
+	// at specific time intervals and send up one composite message to avoid flooding the GC. Batched
+	// messages will only work correctly for types that support increment values. Because the game client
+	// and game server don't know which event types support increment values we can't do any checking
+	// before we send the message.
+	void EconEntity_OnOwnerKillEaterEvent_Batched( class CEconEntity *pEconEntity, class CTFPlayer *pOwner, class CTFPlayer *pVictim, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+	void EconItemInterface_OnOwnerKillEaterEvent_Batched( class IEconItemInterface *pEconEntity, class CTFPlayer *pOwner, class CTFPlayer *pVictim, kill_eater_event_t eEventType, int nIncrementValue = 1 );
+	void KillEaterEvents_FlushBatches();
+#endif // TF_DLL
+
+int GetKillEaterAttrCount();
+int GetKillEaterAttrCount_UserCustomizable();
+const class CEconItemAttributeDefinition *GetKillEaterAttr_Score( int i );
+const class CEconItemAttributeDefinition *GetKillEaterAttr_Type( int i );
+const class CEconItemAttributeDefinition *GetKillEaterAttr_Restriction( int i );
+const class CEconItemAttributeDefinition *GetKillEaterAttr_RestrictionValue( int i );
+bool GetKillEaterAttr_IsUserCustomizable( int i );
+bool GetKilleaterValueByEvent( const class IEconItemInterface* pItem, const kill_eater_event_t& EEventType, uint32& value );
+bool BIsItemStrange( const class IEconItemInterface *pItem );
+
+const int COLLECTION_CRAFTING_ITEM_COUNT = 10;
+const char* GetCollectionCraftingInvalidReason( const class IEconItemInterface *pTestItem, const class IEconItemInterface *pSourceItem );
+
+const int HALLOWEEN_OFFERING_ITEM_COUNT = 3;
+const char* GetHalloweenOfferingInvalidReason( const class IEconItemInterface *pTestItem, const class IEconItemInterface *pSourceItem );
+
+const int CRAFT_COMMON_STATCLOCK_ITEM_COUNT = 5;
+const char* GetCraftCommonStatClockInvalidReason( const class IEconItemInterface *pTestItem, const class IEconItemInterface *pSourceItem );
+
+int GetMaxCardUpgradesPerItem();
+const class CEconItemAttributeDefinition *GetCardUpgradeForIndex( const class IEconItemInterface *pItem, int i );
+
+#define GUARANTEED_OUTPUT	(1<<0)
+#define GUARANTEED_INPUT	(1<<1)
+
+#define DYNAMIC_RECIPE_FLAG_IS_OUTPUT			(1<<0)
+#define DYNAMIC_RECIPE_FLAG_IS_UNTRADABLE		(1<<1)
+#define DYNAMIC_RECIPE_FLAG_PARAM_ITEM_DEF_SET	(1<<2)
+#define DYNAMIC_RECIPE_FLAG_PARAM_QUALITY_SET	(1<<3)
+#define DYNAMIC_RECIPE_FLAG_PARAM_ATTRIBUTE_SET_ALL	(1<<4)
+#define DYNAMIC_RECIPE_FLAG_PARAM_ATTRIBUTE_SET_ANY	(1<<5)
+
+#define k_ObjectiveTrackerFlag_OwnerClient	(1<<0)
+#define k_ObjectiveTrackerFlag_Servers		(1<<1)
+#define k_ObjectiveTrackerFlag_AllClients	(1<<2)
+
+#define k_ObjectiveTrackerFlag_ClientAndServer ( k_ObjectiveTrackerFlag_OwnerClient | k_ObjectiveTrackerFlag_Servers )
+
+const float k_MaxElapsedQuestReportTime = 10.f;
+
+//===============================================================================================================
+// POSITION HANDLING
+//===============================================================================================================
+// TF Inventory Position cracking
+
+// REALLY OLD FORMAT (??):
+//		We store a bag index in the highbits of the inventory position.
+//		The lowbit stores the position of the item within the bag.
+//
+// LESS OLD FORMAT (up through July, 2011):
+//		If Bit 31 is 0: 
+//			Bits 1-16 are the backpack position.
+//			Bits 17-26 are a bool for whether the item is equipped in the matching class.
+//		Otherwise, if Bit 31 is 1:
+//			Item hasn't been acknowledged by the player yet.
+//			Bits 1-16 are the method by the player found the item (see unacknowledged_item_inventory_positions_t)
+//		Bit 32 is 1, to note the new format.
+//
+// CURRENT FORMAT:
+//		If Bit 31 is 0: 
+//			Bits 1-16 are the backpack position.
+//		Otherwise, if Bit 31 is 1:
+//			Item hasn't been acknowledged by the player yet.
+//			Bits 1-16 are the method by the player found the item (see unacknowledged_item_inventory_positions_t)
+//		Equipped state is stored elsewhere.
+//		This is the only format that should exist on clients.
+// Note (1/15/2013) For backwards compatibility, if the value is 0 item is considered unacknowledged too
+
+
+enum unacknowledged_item_inventory_positions_t
+{
+	UNACK_ITEM_UNKNOWN = 0,
+	UNACK_ITEM_DROPPED = 1,
+	UNACK_ITEM_CRAFTED,
+	UNACK_ITEM_TRADED,
+	UNACK_ITEM_PURCHASED,
+	UNACK_ITEM_FOUND_IN_CRATE,
+	UNACK_ITEM_GIFTED,
+	UNACK_ITEM_SUPPORT,
+	UNACK_ITEM_PROMOTION,
+	UNACK_ITEM_EARNED,
+	UNACK_ITEM_REFUNDED,
+	UNACK_ITEM_GIFT_WRAPPED,
+	UNACK_ITEM_FOREIGN,
+	UNACK_ITEM_COLLECTION_REWARD,
+	UNACK_ITEM_PREVIEW_ITEM,
+	UNACK_ITEM_PREVIEW_ITEM_PURCHASED,
+	UNACK_ITEM_PERIODIC_SCORE_REWARD,
+	UNACK_ITEM_MVM_MISSION_COMPLETION_REWARD,
+	UNACK_ITEM_MVM_SQUAD_SURPLUS_REWARD,
+	UNACK_ITEM_FOUND_HOLIDAY_GIFT,
+	UNACK_ITEM_COMMUNITY_MARKET_PURCHASE,
+	UNACK_ITEM_RECIPE_OUTPUT,
+	UNACK_ITEM_HIDDEN_QUEST_ITEM,
+	UNACK_ITEM_QUEST_OUTPUT,
+	UNACK_ITEM_QUEST_LOANER,
+	UNACK_ITEM_TRADE_UP,
+	UNACK_ITEM_QUEST_MERASMISSION_OUTPUT,
+	UNACK_ITEM_VIRAL_COMPETITIVE_BETA_PASS_SPREAD,
+#ifdef ENABLE_STORE_RENTAL_BACKEND
+	UNACK_ITEM_RENTAL_PURCHASE,
+#endif
+
+	UNACK_NUM_METHODS,
+};
+
+extern const char *g_pszItemPickupMethodStrings[UNACK_NUM_METHODS - 1];			// -1 because UNACK_ITEM_DROPPED is index 1, not 0
+extern const char *g_pszItemPickupMethodStringsUnloc[UNACK_NUM_METHODS - 1];
+extern const char *g_pszItemFoundMethodStrings[UNACK_NUM_METHODS - 1];
+
+enum
+{
+	kGCItemSort_NoSort				= 0,			// this won't do anything, but can be used as a safe "header" value
+
+	kGCItemSort_SortByName			= 1,
+	kGCItemSort_SortByDefIndex		= 2,
+	kGCItemSort_SortByRarity		= 3,
+	kGCItemSort_SortByType			= 4,
+	kGCItemSort_SortByDate			= 5,
+
+	kGCItemSort_GameSpecificBase	= 100,
+};
+
+// FIXME: these should be moved... somewhere; where?
+enum
+{
+	kTFGCItemSort_SortByClass		= kGCItemSort_GameSpecificBase + 1,
+	kTFGCItemSort_SortBySlot		= kGCItemSort_GameSpecificBase + 2,
+};
+
+enum
+{
+	kBackendPosition_Unacked	= 1 << 30,
+	kBackendPosition_NewFormat	= 1 << 31,
+
+	kBackendPositionMask_Position		= 0x0000ffff,
+	kBackendPositionMask_FormatFlags	= (kBackendPosition_Unacked | kBackendPosition_NewFormat),
+};
+
+inline void SetBackpackPosition( uint32 *pPosition, uint32 iPackPosition )
+{
+	(*pPosition) = iPackPosition;
+
+	// Remove the unack'd flag
+	(*pPosition) &= ~kBackendPosition_Unacked;	
+}
+
+inline bool IsNewPositionFormat( uint32 iBackendPosition )
+{
+	return ( iBackendPosition & kBackendPosition_NewFormat ) != 0;
+}
+
+inline bool IsUnacknowledged( uint32 iBackendPosition )
+{
+	// For backwards compatibility, we consider position 0 as unacknowledged too
+	return (iBackendPosition == 0 || (iBackendPosition & kBackendPosition_Unacked) != 0);
+}
+
+inline int ExtractBackpackPositionFromBackend( uint32 iBackendPosition )
+{
+	if ( IsUnacknowledged( iBackendPosition) )
+		return 0;
+
+	return iBackendPosition & kBackendPositionMask_Position;
+}
+
+inline unacknowledged_item_inventory_positions_t GetUnacknowledgedReason( uint32 iBackendPosition )
+{
+	return (unacknowledged_item_inventory_positions_t)( iBackendPosition &= ~kBackendPositionMask_FormatFlags );
+}
+
+inline uint32 GetUnacknowledgedPositionFor( unacknowledged_item_inventory_positions_t iMethod )
+{
+	return (iMethod | kBackendPosition_Unacked | kBackendPosition_NewFormat);
+}
+
+//-----------------------------------------------------------------------------
+// Item Preview event IDs for logging.
+//-----------------------------------------------------------------------------
+enum EEconItemPreviewEventIDs
+{
+	k_EEconItemPreview_Start				=1,
+	k_EEconItemPreview_Expired				=2,
+	k_EEconItemPreview_ItemPurchased		=3,
+};
+
+//-----------------------------------------------------------------------------
+// List of holidays. These are sorted by priority. Needs to match static IIsHolidayActive *s_HolidayChecks
+//-----------------------------------------------------------------------------
+enum EHoliday
+{
+	kHoliday_None							= 0,		// must stay at zero for backwards compatibility
+	kHoliday_TFBirthday,
+	kHoliday_Halloween,
+	kHoliday_Christmas,
+	kHoliday_CommunityUpdate,
+	kHoliday_EOTL,
+	kHoliday_Valentines,
+	kHoliday_MeetThePyro,
+	kHoliday_FullMoon,
+	kHoliday_HalloweenOrFullMoon,
+	kHoliday_HalloweenOrFullMoonOrValentines,
+	kHoliday_AprilFools,
+	kHolidayCount,
+};
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+enum ECartItemType
+{
+	kCartItem_Purchase,				// a normal lifetime purchase (needs to stay as entry 0!)
+	kCartItem_TryOutUpgrade,		// an upgrade from "try-it-out"
+	kCartItem_Rental_1Day,
+	kCartItem_Rental_3Day,
+	kCartItem_Rental_7Day,
+};
+
+inline bool IsRentalCartItemType( ECartItemType eCartType )
+{
+	return eCartType == kCartItem_Rental_1Day
+		|| eCartType == kCartItem_Rental_3Day
+		|| eCartType == kCartItem_Rental_7Day;
+}
+
+const uint8	 k_unItemRarity_Any = 0xFF;
+const uint8	 k_unItemQuality_Any = 0xFF;
+
+typedef int		econ_tag_handle_t;
+
+enum EItemUntradability
+{
+	k_Untradability_Temporary	= 1<<1,
+	k_Untradability_Permanent	= 1<<2,
+};
+
+#define INVALID_ECON_TAG_HANDLE	((econ_tag_handle_t)-1)
+
+#endif // ACTUAL_ECON_ITEM_CONSTANTS_H