networking

external/steamworks/steamworksexample/ItemStore.cpp

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+//========= Copyright © Valve LLC, All rights reserved. ============
+//
+// Purpose: Class for interacting with the Item Store
+//
+//=============================================================================
+
+#include "stdafx.h"
+#include "ItemStore.h"
+#include "BaseMenu.h"
+#include <math.h>
+#include <vector>
+#include <algorithm>
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Menu that shows purchaseable items
+//-----------------------------------------------------------------------------
+class CItemStoreMenu : public CBaseMenu<PurchaseableItem_t>
+{
+public:
+
+	//-----------------------------------------------------------------------------
+	// Purpose: Constructor
+	//-----------------------------------------------------------------------------
+	CItemStoreMenu( IGameEngine *pGameEngine, CItemStore *pItemStore ) : CBaseMenu<PurchaseableItem_t>( pGameEngine ), m_pItemStore( pItemStore )
+	{
+		
+	}
+
+	//-----------------------------------------------------------------------------
+	// Purpose: Creates menu
+	//-----------------------------------------------------------------------------
+	void Rebuild()
+	{
+		PushSelectedItem();
+		ClearMenuItems();
+
+		const std::vector<PurchaseableItem_t> &vecPurchaseableItems = m_pItemStore->GetPurchaseableItems();
+		for ( uint32 i = 0; i < vecPurchaseableItems.size(); ++i )
+		{
+			const PurchaseableItem_t &t = vecPurchaseableItems[i];
+			AddItemToMenu( t );
+		}
+
+		PurchaseableItem_t menuItemBack = { 0, 0 };
+		AddMenuItem( CItemStoreMenu::MenuItem_t( "Return to main menu", menuItemBack ) );
+		
+		PopSelectedItem();
+	}
+
+private:
+
+	void AddItemToMenu( const PurchaseableItem_t &item )
+	{
+		char bufName[512];
+		uint32 bufNameSize = sizeof( bufName );
+		if ( !SteamInventory()->GetItemDefinitionProperty( item.m_nItemDefID, "name", bufName, &bufNameSize ) && bufNameSize <= sizeof( bufName ) )
+		{
+			return;
+		}
+		uint32 unQuantity = SpaceWarLocalInventory()->GetNumOf( item.m_nItemDefID );
+
+		char rgchBuffer[1024];
+		sprintf_safe( rgchBuffer, "%u. Purchase %-25s    %s %0.2f    (own %u)", item.m_nItemDefID, bufName, m_pItemStore->GetCurrency(), float( item.m_ulPrice ) / 100, unQuantity );
+
+		AddMenuItem( CItemStoreMenu::MenuItem_t( rgchBuffer, item ) );
+	}
+
+	CItemStore *m_pItemStore;
+};
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor
+//-----------------------------------------------------------------------------
+CItemStore::CItemStore( IGameEngine *pGameEngine ) : m_pGameEngine( pGameEngine )
+{
+	m_pItemStoreMenu = new CItemStoreMenu( pGameEngine, this );
+
+	Show();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CItemStore::RunFrame()
+{
+	m_pItemStoreMenu->RunFrame();	
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Handles menu actions when viewing purchaseable items
+//-----------------------------------------------------------------------------
+void CItemStore::OnMenuSelection( PurchaseableItem_t selection )
+{
+	if ( selection.m_nItemDefID == 0 )
+	{
+		SpaceWarClient()->SetGameState( k_EClientGameMenu );
+		return;
+	}
+
+	uint32 rgQuantity[1] = {1};
+	SteamInventory()->StartPurchase( &selection.m_nItemDefID, rgQuantity, 1 );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: load all all purchaseable items
+//-----------------------------------------------------------------------------
+void CItemStore::LoadItemsWithPrices()
+{
+	m_vecPurchaseableItems.clear();
+
+	SteamAPICall_t hSteamAPICall = SteamInventory()->RequestPrices();
+	m_SteamCallResultRequestPrices.Set( hSteamAPICall, this, &CItemStore::OnRequestPricesResult );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Request prices from the Steam Inventory Service
+//-----------------------------------------------------------------------------
+void CItemStore::OnRequestPricesResult( SteamInventoryRequestPricesResult_t *pParam, bool bIOFailure )
+{
+	if ( pParam->m_result == k_EResultOK )
+	{
+		strncpy( m_rgchCurrency, pParam->m_rgchCurrency, sizeof( m_rgchCurrency ) );
+
+		uint32 unItems = SteamInventory()->GetNumItemsWithPrices();
+		std::vector<SteamItemDef_t> vecItemDefs;
+		vecItemDefs.resize( unItems );
+		std::vector<uint64> vecPrices;
+		vecPrices.resize( unItems );
+
+		if ( SteamInventory()->GetItemsWithPrices( vecItemDefs.data(), vecPrices.data(), NULL, unItems ) )
+		{
+			m_vecPurchaseableItems.reserve( unItems );
+			for ( uint32 i = 0; i < unItems; ++i )
+			{
+				PurchaseableItem_t t;
+				t.m_nItemDefID = vecItemDefs[i];
+				t.m_ulPrice = vecPrices[i];
+				m_vecPurchaseableItems.push_back( t );
+			}
+		}
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Shows / Refreshes the friends list
+//-----------------------------------------------------------------------------
+void CItemStore::Show()
+{
+	m_pItemStoreMenu->Rebuild();
+}
+