networking

external/steamworks/steamworksexample/Friends.cpp

@@ -0,0 +1,168 @@
+//========= Copyright <20> 1996-2009, Valve LLC, All rights reserved. ============
+//
+// Purpose: Class for tracking friends list
+//
+//=============================================================================
+
+#include "stdafx.h"
+#include "Friends.h"
+#include "BaseMenu.h"
+#include <math.h>
+#include <vector>
+#include <algorithm>
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Menu that shows your friends
+//-----------------------------------------------------------------------------
+class CFriendsListMenu : public CBaseMenu<FriendsListMenuItem_t>
+{
+	static const FriendsListMenuItem_t k_menuItemEmpty;
+
+public:
+
+	//-----------------------------------------------------------------------------
+	// Purpose: Constructor
+	//-----------------------------------------------------------------------------
+	CFriendsListMenu( IGameEngine *pGameEngine ) : CBaseMenu<FriendsListMenuItem_t>( pGameEngine )
+	{
+		
+	}
+
+	//-----------------------------------------------------------------------------
+	// Purpose: Creates friends list menu
+	//-----------------------------------------------------------------------------
+	void Rebuild()
+	{
+		PushSelectedItem();
+		ClearMenuItems();
+
+		AddMenuItem( CFriendsListMenu::MenuItem_t( "Friends List", k_menuItemEmpty ) );
+
+		// First add pending incoming requests
+		AddFriendsByFlag( k_EFriendFlagFriendshipRequested, "Incoming Friend Requests" );
+
+		// Add each Tag group and record the users with tags
+		std::vector<CSteamID> vecTaggedSteamIDs;
+		int nFriendsGroups = SteamFriends()->GetFriendsGroupCount();
+		for ( int iFG = 0; iFG < nFriendsGroups; iFG++ )
+		{
+			FriendsGroupID_t friendsGroupID = SteamFriends()->GetFriendsGroupIDByIndex( iFG );
+			if ( friendsGroupID == k_FriendsGroupID_Invalid )
+				continue;
+
+			int nFriendsGroupMemberCount = SteamFriends()->GetFriendsGroupMembersCount( friendsGroupID );
+			if ( !nFriendsGroupMemberCount )
+				continue;
+
+			const char *pszFriendsGroupName = SteamFriends()->GetFriendsGroupName( friendsGroupID );
+			if ( pszFriendsGroupName == NULL )
+				pszFriendsGroupName = "";
+			AddMenuItem( CFriendsListMenu::MenuItem_t( "", k_menuItemEmpty ) );
+			AddMenuItem( CFriendsListMenu::MenuItem_t( pszFriendsGroupName, k_menuItemEmpty ) );
+
+			std::vector<CSteamID> vecSteamIDMembers( nFriendsGroupMemberCount );
+			SteamFriends()->GetFriendsGroupMembersList( friendsGroupID, &vecSteamIDMembers[0], nFriendsGroupMemberCount );
+			for ( int iMember = 0; iMember < nFriendsGroupMemberCount; iMember++ )
+			{
+				const CSteamID &steamIDMember = vecSteamIDMembers[iMember];
+				AddFriendToMenu( steamIDMember );
+				vecTaggedSteamIDs.push_back( steamIDMember );
+			}
+		}
+
+		// Add the "normal" Friends category, filtering out the ones with tags
+		AddFriendsByFlag( k_EFriendFlagImmediate, "Friends", &vecTaggedSteamIDs );
+
+		// Finally add the pending outgoing requests
+		AddFriendsByFlag( k_EFriendFlagRequestingFriendship, "Outgoing Friend Requests" );
+
+		PopSelectedItem();
+	}
+
+private:
+
+	void AddFriendsByFlag( int iFriendFlag, const char *pszName, std::vector<CSteamID> *pVecIgnoredSteamIDs = NULL )
+	{
+		int iFriendCount = SteamFriends()->GetFriendCount( iFriendFlag );
+		if ( !iFriendCount )
+			return;
+
+		AddMenuItem( CFriendsListMenu::MenuItem_t( "", k_menuItemEmpty ) );
+		AddMenuItem( CFriendsListMenu::MenuItem_t( pszName, k_menuItemEmpty ) );
+
+		for ( int iFriend = 0; iFriend < iFriendCount; iFriend++ )
+		{
+			CSteamID steamIDFriend = SteamFriends()->GetFriendByIndex( iFriend, iFriendFlag );
+
+			// This mimicks the Steam client's feature where it only shows
+			// untagged friends in the canonical Friends section by default
+			if ( pVecIgnoredSteamIDs && ( std::find( pVecIgnoredSteamIDs->begin(), pVecIgnoredSteamIDs->end(), steamIDFriend ) != pVecIgnoredSteamIDs->end() ) )
+				continue;
+
+			AddFriendToMenu( steamIDFriend );
+		}
+	}
+
+	void AddFriendToMenu( CSteamID steamIDFriend )
+	{
+		if ( !steamIDFriend.IsValid() )
+			return;
+
+		FriendsListMenuItem_t menuItemFriend = { steamIDFriend };
+
+		char szFriendNameBuffer[512] = { '\0' };
+
+		const char *pszFriendName = SteamFriends()->GetFriendPersonaName( steamIDFriend );
+		sprintf_safe( szFriendNameBuffer, "%s", pszFriendName );
+
+		const char *pszFriendNickname = SteamFriends()->GetPlayerNickname( steamIDFriend );
+		if ( pszFriendNickname )
+		{
+			sprintf_safe( szFriendNameBuffer, "%s (%s)", szFriendNameBuffer, pszFriendNickname );
+		}
+
+		AddMenuItem( CFriendsListMenu::MenuItem_t( szFriendNameBuffer, menuItemFriend ) );
+	}
+};
+
+const FriendsListMenuItem_t CFriendsListMenu::k_menuItemEmpty = { k_steamIDNil };
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor
+//-----------------------------------------------------------------------------
+CFriendsList::CFriendsList( IGameEngine *pGameEngine ) : m_pGameEngine( pGameEngine )
+{
+	m_pFriendsListMenu = new CFriendsListMenu( pGameEngine );
+
+	Show();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Run a frame for the CFriendsList
+//-----------------------------------------------------------------------------
+void CFriendsList::RunFrame()
+{
+	m_pFriendsListMenu->RunFrame();	
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Handles menu actions when viewing a friends list
+//-----------------------------------------------------------------------------
+void CFriendsList::OnMenuSelection( FriendsListMenuItem_t selection )
+{
+	// Do nothing (yet)
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Shows / Refreshes the friends list
+//-----------------------------------------------------------------------------
+void CFriendsList::Show()
+{
+	m_pFriendsListMenu->Rebuild();
+}
+