451 lines
25 KiB
C++
451 lines
25 KiB
C++
//====== Copyright © 1996-2014 Valve Corporation, All rights reserved. =======
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//
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// Purpose: interface to Steam Inventory
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//
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//=============================================================================
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#ifndef ISTEAMINVENTORY_H
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#define ISTEAMINVENTORY_H
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#ifdef STEAM_WIN32
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#pragma once
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#endif
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#include "steam_api_common.h"
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// callbacks
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#if defined( VALVE_CALLBACK_PACK_SMALL )
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#pragma pack( push, 4 )
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#elif defined( VALVE_CALLBACK_PACK_LARGE )
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#pragma pack( push, 8 )
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#else
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#error steam_api_common.h should define VALVE_CALLBACK_PACK_xxx
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#endif
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// Every individual instance of an item has a globally-unique ItemInstanceID.
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// This ID is unique to the combination of (player, specific item instance)
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// and will not be transferred to another player or re-used for another item.
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typedef uint64 SteamItemInstanceID_t;
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static const SteamItemInstanceID_t k_SteamItemInstanceIDInvalid = (SteamItemInstanceID_t)~0;
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// Types of items in your game are identified by a 32-bit "item definition number".
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// Valid definition numbers are between 1 and 999999999; numbers less than or equal to
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// zero are invalid, and numbers greater than or equal to one billion (1x10^9) are
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// reserved for internal Steam use.
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typedef int32 SteamItemDef_t;
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enum ESteamItemFlags
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{
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// Item status flags - these flags are permanently attached to specific item instances
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k_ESteamItemNoTrade = 1 << 0, // This item is account-locked and cannot be traded or given away.
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// Action confirmation flags - these flags are set one time only, as part of a result set
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k_ESteamItemRemoved = 1 << 8, // The item has been destroyed, traded away, expired, or otherwise invalidated
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k_ESteamItemConsumed = 1 << 9, // The item quantity has been decreased by 1 via ConsumeItem API.
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// All other flag bits are currently reserved for internal Steam use at this time.
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// Do not assume anything about the state of other flags which are not defined here.
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};
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struct SteamItemDetails_t
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{
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SteamItemInstanceID_t m_itemId;
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SteamItemDef_t m_iDefinition;
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uint16 m_unQuantity;
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uint16 m_unFlags; // see ESteamItemFlags
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};
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typedef int32 SteamInventoryResult_t;
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static const SteamInventoryResult_t k_SteamInventoryResultInvalid = -1;
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typedef uint64 SteamInventoryUpdateHandle_t;
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const SteamInventoryUpdateHandle_t k_SteamInventoryUpdateHandleInvalid = 0xffffffffffffffffull;
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//-----------------------------------------------------------------------------
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// Purpose: Steam Inventory query and manipulation API
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//-----------------------------------------------------------------------------
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class ISteamInventory
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{
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public:
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// INVENTORY ASYNC RESULT MANAGEMENT
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//
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// Asynchronous inventory queries always output a result handle which can be used with
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// GetResultStatus, GetResultItems, etc. A SteamInventoryResultReady_t callback will
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// be triggered when the asynchronous result becomes ready (or fails).
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//
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// Find out the status of an asynchronous inventory result handle. Possible values:
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// k_EResultPending - still in progress
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// k_EResultOK - done, result ready
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// k_EResultExpired - done, result ready, maybe out of date (see DeserializeResult)
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// k_EResultInvalidParam - ERROR: invalid API call parameters
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// k_EResultServiceUnavailable - ERROR: service temporarily down, you may retry later
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// k_EResultLimitExceeded - ERROR: operation would exceed per-user inventory limits
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// k_EResultFail - ERROR: unknown / generic error
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STEAM_METHOD_DESC(Find out the status of an asynchronous inventory result handle.)
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virtual EResult GetResultStatus( SteamInventoryResult_t resultHandle ) = 0;
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// Copies the contents of a result set into a flat array. The specific
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// contents of the result set depend on which query which was used.
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STEAM_METHOD_DESC(Copies the contents of a result set into a flat array. The specific contents of the result set depend on which query which was used.)
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virtual bool GetResultItems( SteamInventoryResult_t resultHandle,
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STEAM_OUT_ARRAY_COUNT( punOutItemsArraySize,Output array) SteamItemDetails_t *pOutItemsArray,
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uint32 *punOutItemsArraySize ) = 0;
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// In combination with GetResultItems, you can use GetResultItemProperty to retrieve
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// dynamic string properties for a given item returned in the result set.
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//
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// Property names are always composed of ASCII letters, numbers, and/or underscores.
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//
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// Pass a NULL pointer for pchPropertyName to get a comma - separated list of available
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// property names.
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//
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// If pchValueBuffer is NULL, *punValueBufferSize will contain the
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// suggested buffer size. Otherwise it will be the number of bytes actually copied
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// to pchValueBuffer. If the results do not fit in the given buffer, partial
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// results may be copied.
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virtual bool GetResultItemProperty( SteamInventoryResult_t resultHandle,
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uint32 unItemIndex,
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const char *pchPropertyName,
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STEAM_OUT_STRING_COUNT( punValueBufferSizeOut ) char *pchValueBuffer, uint32 *punValueBufferSizeOut ) = 0;
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// Returns the server time at which the result was generated. Compare against
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// the value of IClientUtils::GetServerRealTime() to determine age.
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STEAM_METHOD_DESC(Returns the server time at which the result was generated. Compare against the value of IClientUtils::GetServerRealTime() to determine age.)
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virtual uint32 GetResultTimestamp( SteamInventoryResult_t resultHandle ) = 0;
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// Returns true if the result belongs to the target steam ID, false if the
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// result does not. This is important when using DeserializeResult, to verify
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// that a remote player is not pretending to have a different user's inventory.
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STEAM_METHOD_DESC(Returns true if the result belongs to the target steam ID or false if the result does not. This is important when using DeserializeResult to verify that a remote player is not pretending to have a different users inventory.)
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virtual bool CheckResultSteamID( SteamInventoryResult_t resultHandle, CSteamID steamIDExpected ) = 0;
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// Destroys a result handle and frees all associated memory.
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STEAM_METHOD_DESC(Destroys a result handle and frees all associated memory.)
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virtual void DestroyResult( SteamInventoryResult_t resultHandle ) = 0;
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// INVENTORY ASYNC QUERY
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//
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// Captures the entire state of the current user's Steam inventory.
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// You must call DestroyResult on this handle when you are done with it.
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// Returns false and sets *pResultHandle to zero if inventory is unavailable.
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// Note: calls to this function are subject to rate limits and may return
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// cached results if called too frequently. It is suggested that you call
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// this function only when you are about to display the user's full inventory,
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// or if you expect that the inventory may have changed.
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STEAM_METHOD_DESC(Captures the entire state of the current users Steam inventory.)
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virtual bool GetAllItems( SteamInventoryResult_t *pResultHandle ) = 0;
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// Captures the state of a subset of the current user's Steam inventory,
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// identified by an array of item instance IDs. The results from this call
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// can be serialized and passed to other players to "prove" that the current
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// user owns specific items, without exposing the user's entire inventory.
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// For example, you could call GetItemsByID with the IDs of the user's
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// currently equipped cosmetic items and serialize this to a buffer, and
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// then transmit this buffer to other players upon joining a game.
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STEAM_METHOD_DESC(Captures the state of a subset of the current users Steam inventory identified by an array of item instance IDs.)
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virtual bool GetItemsByID( SteamInventoryResult_t *pResultHandle, STEAM_ARRAY_COUNT( unCountInstanceIDs ) const SteamItemInstanceID_t *pInstanceIDs, uint32 unCountInstanceIDs ) = 0;
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// RESULT SERIALIZATION AND AUTHENTICATION
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//
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// Serialized result sets contain a short signature which can't be forged
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// or replayed across different game sessions. A result set can be serialized
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// on the local client, transmitted to other players via your game networking,
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// and deserialized by the remote players. This is a secure way of preventing
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// hackers from lying about posessing rare/high-value items.
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// Serializes a result set with signature bytes to an output buffer. Pass
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// NULL as an output buffer to get the required size via punOutBufferSize.
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// The size of a serialized result depends on the number items which are being
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// serialized. When securely transmitting items to other players, it is
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// recommended to use "GetItemsByID" first to create a minimal result set.
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// Results have a built-in timestamp which will be considered "expired" after
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// an hour has elapsed. See DeserializeResult for expiration handling.
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virtual bool SerializeResult( SteamInventoryResult_t resultHandle, STEAM_OUT_BUFFER_COUNT(punOutBufferSize) void *pOutBuffer, uint32 *punOutBufferSize ) = 0;
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// Deserializes a result set and verifies the signature bytes. Returns false
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// if bRequireFullOnlineVerify is set but Steam is running in Offline mode.
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// Otherwise returns true and then delivers error codes via GetResultStatus.
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//
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// The bRESERVED_MUST_BE_FALSE flag is reserved for future use and should not
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// be set to true by your game at this time.
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//
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// DeserializeResult has a potential soft-failure mode where the handle status
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// is set to k_EResultExpired. GetResultItems() still succeeds in this mode.
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// The "expired" result could indicate that the data may be out of date - not
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// just due to timed expiration (one hour), but also because one of the items
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// in the result set may have been traded or consumed since the result set was
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// generated. You could compare the timestamp from GetResultTimestamp() to
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// ISteamUtils::GetServerRealTime() to determine how old the data is. You could
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// simply ignore the "expired" result code and continue as normal, or you
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// could challenge the player with expired data to send an updated result set.
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virtual bool DeserializeResult( SteamInventoryResult_t *pOutResultHandle, STEAM_BUFFER_COUNT(punOutBufferSize) const void *pBuffer, uint32 unBufferSize, bool bRESERVED_MUST_BE_FALSE = false ) = 0;
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// INVENTORY ASYNC MODIFICATION
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//
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// GenerateItems() creates one or more items and then generates a SteamInventoryCallback_t
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// notification with a matching nCallbackContext parameter. This API is only intended
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// for prototyping - it is only usable by Steam accounts that belong to the publisher group
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// for your game.
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// If punArrayQuantity is not NULL, it should be the same length as pArrayItems and should
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// describe the quantity of each item to generate.
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virtual bool GenerateItems( SteamInventoryResult_t *pResultHandle, STEAM_ARRAY_COUNT(unArrayLength) const SteamItemDef_t *pArrayItemDefs, STEAM_ARRAY_COUNT(unArrayLength) const uint32 *punArrayQuantity, uint32 unArrayLength ) = 0;
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// GrantPromoItems() checks the list of promotional items for which the user may be eligible
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// and grants the items (one time only). On success, the result set will include items which
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// were granted, if any. If no items were granted because the user isn't eligible for any
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// promotions, this is still considered a success.
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STEAM_METHOD_DESC(GrantPromoItems() checks the list of promotional items for which the user may be eligible and grants the items (one time only).)
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virtual bool GrantPromoItems( SteamInventoryResult_t *pResultHandle ) = 0;
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// AddPromoItem() / AddPromoItems() are restricted versions of GrantPromoItems(). Instead of
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// scanning for all eligible promotional items, the check is restricted to a single item
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// definition or set of item definitions. This can be useful if your game has custom UI for
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// showing a specific promo item to the user.
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virtual bool AddPromoItem( SteamInventoryResult_t *pResultHandle, SteamItemDef_t itemDef ) = 0;
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virtual bool AddPromoItems( SteamInventoryResult_t *pResultHandle, STEAM_ARRAY_COUNT(unArrayLength) const SteamItemDef_t *pArrayItemDefs, uint32 unArrayLength ) = 0;
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// ConsumeItem() removes items from the inventory, permanently. They cannot be recovered.
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// Not for the faint of heart - if your game implements item removal at all, a high-friction
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// UI confirmation process is highly recommended.
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STEAM_METHOD_DESC(ConsumeItem() removes items from the inventory permanently.)
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virtual bool ConsumeItem( SteamInventoryResult_t *pResultHandle, SteamItemInstanceID_t itemConsume, uint32 unQuantity ) = 0;
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// ExchangeItems() is an atomic combination of item generation and consumption.
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// It can be used to implement crafting recipes or transmutations, or items which unpack
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// themselves into other items (e.g., a chest).
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// Exchange recipes are defined in the ItemDef, and explicitly list the required item
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// types and resulting generated type.
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// Exchange recipes are evaluated atomically by the Inventory Service; if the supplied
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// components do not match the recipe, or do not contain sufficient quantity, the
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// exchange will fail.
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virtual bool ExchangeItems( SteamInventoryResult_t *pResultHandle,
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STEAM_ARRAY_COUNT(unArrayGenerateLength) const SteamItemDef_t *pArrayGenerate, STEAM_ARRAY_COUNT(unArrayGenerateLength) const uint32 *punArrayGenerateQuantity, uint32 unArrayGenerateLength,
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STEAM_ARRAY_COUNT(unArrayDestroyLength) const SteamItemInstanceID_t *pArrayDestroy, STEAM_ARRAY_COUNT(unArrayDestroyLength) const uint32 *punArrayDestroyQuantity, uint32 unArrayDestroyLength ) = 0;
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// TransferItemQuantity() is intended for use with items which are "stackable" (can have
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// quantity greater than one). It can be used to split a stack into two, or to transfer
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// quantity from one stack into another stack of identical items. To split one stack into
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// two, pass k_SteamItemInstanceIDInvalid for itemIdDest and a new item will be generated.
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virtual bool TransferItemQuantity( SteamInventoryResult_t *pResultHandle, SteamItemInstanceID_t itemIdSource, uint32 unQuantity, SteamItemInstanceID_t itemIdDest ) = 0;
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// TIMED DROPS AND PLAYTIME CREDIT
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//
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// Deprecated. Calling this method is not required for proper playtime accounting.
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STEAM_METHOD_DESC( Deprecated method. Playtime accounting is performed on the Steam servers. )
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virtual void SendItemDropHeartbeat() = 0;
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// Playtime credit must be consumed and turned into item drops by your game. Only item
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// definitions which are marked as "playtime item generators" can be spawned. The call
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// will return an empty result set if there is not enough playtime credit for a drop.
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// Your game should call TriggerItemDrop at an appropriate time for the user to receive
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// new items, such as between rounds or while the player is dead. Note that players who
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// hack their clients could modify the value of "dropListDefinition", so do not use it
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// to directly control rarity.
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// See your Steamworks configuration to set playtime drop rates for individual itemdefs.
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// The client library will suppress too-frequent calls to this method.
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STEAM_METHOD_DESC(Playtime credit must be consumed and turned into item drops by your game.)
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virtual bool TriggerItemDrop( SteamInventoryResult_t *pResultHandle, SteamItemDef_t dropListDefinition ) = 0;
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// Deprecated. This method is not supported.
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virtual bool TradeItems( SteamInventoryResult_t *pResultHandle, CSteamID steamIDTradePartner,
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STEAM_ARRAY_COUNT(nArrayGiveLength) const SteamItemInstanceID_t *pArrayGive, STEAM_ARRAY_COUNT(nArrayGiveLength) const uint32 *pArrayGiveQuantity, uint32 nArrayGiveLength,
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STEAM_ARRAY_COUNT(nArrayGetLength) const SteamItemInstanceID_t *pArrayGet, STEAM_ARRAY_COUNT(nArrayGetLength) const uint32 *pArrayGetQuantity, uint32 nArrayGetLength ) = 0;
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// ITEM DEFINITIONS
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//
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// Item definitions are a mapping of "definition IDs" (integers between 1 and 1000000)
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// to a set of string properties. Some of these properties are required to display items
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// on the Steam community web site. Other properties can be defined by applications.
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// Use of these functions is optional; there is no reason to call LoadItemDefinitions
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// if your game hardcodes the numeric definition IDs (eg, purple face mask = 20, blue
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// weapon mod = 55) and does not allow for adding new item types without a client patch.
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//
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// LoadItemDefinitions triggers the automatic load and refresh of item definitions.
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// Every time new item definitions are available (eg, from the dynamic addition of new
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// item types while players are still in-game), a SteamInventoryDefinitionUpdate_t
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// callback will be fired.
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STEAM_METHOD_DESC(LoadItemDefinitions triggers the automatic load and refresh of item definitions.)
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virtual bool LoadItemDefinitions() = 0;
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// GetItemDefinitionIDs returns the set of all defined item definition IDs (which are
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// defined via Steamworks configuration, and not necessarily contiguous integers).
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// If pItemDefIDs is null, the call will return true and *punItemDefIDsArraySize will
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// contain the total size necessary for a subsequent call. Otherwise, the call will
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// return false if and only if there is not enough space in the output array.
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virtual bool GetItemDefinitionIDs(
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STEAM_OUT_ARRAY_COUNT(punItemDefIDsArraySize,List of item definition IDs) SteamItemDef_t *pItemDefIDs,
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STEAM_DESC(Size of array is passed in and actual size used is returned in this param) uint32 *punItemDefIDsArraySize ) = 0;
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// GetItemDefinitionProperty returns a string property from a given item definition.
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// Note that some properties (for example, "name") may be localized and will depend
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// on the current Steam language settings (see ISteamApps::GetCurrentGameLanguage).
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// Property names are always composed of ASCII letters, numbers, and/or underscores.
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// Pass a NULL pointer for pchPropertyName to get a comma - separated list of available
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// property names. If pchValueBuffer is NULL, *punValueBufferSize will contain the
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// suggested buffer size. Otherwise it will be the number of bytes actually copied
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// to pchValueBuffer. If the results do not fit in the given buffer, partial
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// results may be copied.
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virtual bool GetItemDefinitionProperty( SteamItemDef_t iDefinition, const char *pchPropertyName,
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STEAM_OUT_STRING_COUNT(punValueBufferSizeOut) char *pchValueBuffer, uint32 *punValueBufferSizeOut ) = 0;
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// Request the list of "eligible" promo items that can be manually granted to the given
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// user. These are promo items of type "manual" that won't be granted automatically.
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// An example usage of this is an item that becomes available every week.
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STEAM_CALL_RESULT( SteamInventoryEligiblePromoItemDefIDs_t )
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virtual SteamAPICall_t RequestEligiblePromoItemDefinitionsIDs( CSteamID steamID ) = 0;
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// After handling a SteamInventoryEligiblePromoItemDefIDs_t call result, use this
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// function to pull out the list of item definition ids that the user can be
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// manually granted via the AddPromoItems() call.
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virtual bool GetEligiblePromoItemDefinitionIDs(
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CSteamID steamID,
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STEAM_OUT_ARRAY_COUNT(punItemDefIDsArraySize,List of item definition IDs) SteamItemDef_t *pItemDefIDs,
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STEAM_DESC(Size of array is passed in and actual size used is returned in this param) uint32 *punItemDefIDsArraySize ) = 0;
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// Starts the purchase process for the given item definitions. The callback SteamInventoryStartPurchaseResult_t
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// will be posted if Steam was able to initialize the transaction.
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//
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// Once the purchase has been authorized and completed by the user, the callback SteamInventoryResultReady_t
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// will be posted.
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STEAM_CALL_RESULT( SteamInventoryStartPurchaseResult_t )
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virtual SteamAPICall_t StartPurchase( STEAM_ARRAY_COUNT(unArrayLength) const SteamItemDef_t *pArrayItemDefs, STEAM_ARRAY_COUNT(unArrayLength) const uint32 *punArrayQuantity, uint32 unArrayLength ) = 0;
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// Request current prices for all applicable item definitions
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STEAM_CALL_RESULT( SteamInventoryRequestPricesResult_t )
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virtual SteamAPICall_t RequestPrices() = 0;
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// Returns the number of items with prices. Need to call RequestPrices() first.
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virtual uint32 GetNumItemsWithPrices() = 0;
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// Returns item definition ids and their prices in the user's local currency.
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// Need to call RequestPrices() first.
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virtual bool GetItemsWithPrices( STEAM_ARRAY_COUNT(unArrayLength) STEAM_OUT_ARRAY_COUNT(pArrayItemDefs, Items with prices) SteamItemDef_t *pArrayItemDefs,
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STEAM_ARRAY_COUNT(unArrayLength) STEAM_OUT_ARRAY_COUNT(pPrices, List of prices for the given item defs) uint64 *pCurrentPrices,
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STEAM_ARRAY_COUNT(unArrayLength) STEAM_OUT_ARRAY_COUNT(pPrices, List of prices for the given item defs) uint64 *pBasePrices,
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uint32 unArrayLength ) = 0;
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// Retrieves the price for the item definition id
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// Returns false if there is no price stored for the item definition.
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virtual bool GetItemPrice( SteamItemDef_t iDefinition, uint64 *pCurrentPrice, uint64 *pBasePrice ) = 0;
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// Create a request to update properties on items
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virtual SteamInventoryUpdateHandle_t StartUpdateProperties() = 0;
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// Remove the property on the item
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virtual bool RemoveProperty( SteamInventoryUpdateHandle_t handle, SteamItemInstanceID_t nItemID, const char *pchPropertyName ) = 0;
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// Accessor methods to set properties on items
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STEAM_FLAT_NAME( SetPropertyString )
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virtual bool SetProperty( SteamInventoryUpdateHandle_t handle, SteamItemInstanceID_t nItemID, const char *pchPropertyName, const char *pchPropertyValue ) = 0;
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STEAM_FLAT_NAME( SetPropertyBool )
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virtual bool SetProperty( SteamInventoryUpdateHandle_t handle, SteamItemInstanceID_t nItemID, const char *pchPropertyName, bool bValue ) = 0;
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STEAM_FLAT_NAME( SetPropertyInt64 )
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virtual bool SetProperty( SteamInventoryUpdateHandle_t handle, SteamItemInstanceID_t nItemID, const char *pchPropertyName, int64 nValue ) = 0;
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STEAM_FLAT_NAME( SetPropertyFloat )
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virtual bool SetProperty( SteamInventoryUpdateHandle_t handle, SteamItemInstanceID_t nItemID, const char *pchPropertyName, float flValue ) = 0;
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// Submit the update request by handle
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virtual bool SubmitUpdateProperties( SteamInventoryUpdateHandle_t handle, SteamInventoryResult_t * pResultHandle ) = 0;
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STEAM_METHOD_DESC(Look up the given token and return a pseudo-Inventory item.)
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virtual bool InspectItem( SteamInventoryResult_t *pResultHandle, const char *pchItemToken ) = 0;
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};
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#define STEAMINVENTORY_INTERFACE_VERSION "STEAMINVENTORY_INTERFACE_V003"
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#ifndef STEAM_API_EXPORTS
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// Global interface accessor
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inline ISteamInventory *SteamInventory();
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STEAM_DEFINE_USER_INTERFACE_ACCESSOR( ISteamInventory *, SteamInventory, STEAMINVENTORY_INTERFACE_VERSION );
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// Global accessor for the gameserver client
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inline ISteamInventory *SteamGameServerInventory();
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STEAM_DEFINE_GAMESERVER_INTERFACE_ACCESSOR( ISteamInventory *, SteamGameServerInventory, STEAMINVENTORY_INTERFACE_VERSION );
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#endif
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// SteamInventoryResultReady_t callbacks are fired whenever asynchronous
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// results transition from "Pending" to "OK" or an error state. There will
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// always be exactly one callback per handle.
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struct SteamInventoryResultReady_t
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{
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enum { k_iCallback = k_iSteamInventoryCallbacks + 0 };
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SteamInventoryResult_t m_handle;
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EResult m_result;
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};
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// SteamInventoryFullUpdate_t callbacks are triggered when GetAllItems
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// successfully returns a result which is newer / fresher than the last
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// known result. (It will not trigger if the inventory hasn't changed,
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// or if results from two overlapping calls are reversed in flight and
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// the earlier result is already known to be stale/out-of-date.)
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// The normal ResultReady callback will still be triggered immediately
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// afterwards; this is an additional notification for your convenience.
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struct SteamInventoryFullUpdate_t
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{
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enum { k_iCallback = k_iSteamInventoryCallbacks + 1 };
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SteamInventoryResult_t m_handle;
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};
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// A SteamInventoryDefinitionUpdate_t callback is triggered whenever
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// item definitions have been updated, which could be in response to
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// LoadItemDefinitions() or any other async request which required
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// a definition update in order to process results from the server.
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struct SteamInventoryDefinitionUpdate_t
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{
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enum { k_iCallback = k_iSteamInventoryCallbacks + 2 };
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};
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// Returned
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struct SteamInventoryEligiblePromoItemDefIDs_t
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{
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enum { k_iCallback = k_iSteamInventoryCallbacks + 3 };
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EResult m_result;
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CSteamID m_steamID;
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int m_numEligiblePromoItemDefs;
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bool m_bCachedData; // indicates that the data was retrieved from the cache and not the server
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};
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// Triggered from StartPurchase call
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struct SteamInventoryStartPurchaseResult_t
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{
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enum { k_iCallback = k_iSteamInventoryCallbacks + 4 };
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EResult m_result;
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uint64 m_ulOrderID;
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uint64 m_ulTransID;
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};
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// Triggered from RequestPrices
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struct SteamInventoryRequestPricesResult_t
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{
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enum { k_iCallback = k_iSteamInventoryCallbacks + 5 };
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EResult m_result;
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char m_rgchCurrency[4];
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};
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#pragma pack( pop )
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#endif // ISTEAMCONTROLLER_H
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