Add Friend.Nickname to get Steam nicknames for players

Expose FriendGameInfo.GameID so you can see what appID friends are playing

Facepunch.Steamworks/Structs/Friend.cs

@@ -40,7 +40,7 @@ public override string ToString()
 		/// <summary>
 		/// Return true if this user is playing the game we're running
 		/// </summary>
-		public bool IsPlayingThisGame => GameInfo?.GameID == SteamClient.AppId;
+		public bool IsPlayingThisGame => GameInfo?.GameID is { Type: GameIdType.App } && GameInfo.Value.GameID.AppId == SteamClient.AppId;
 
 		/// <summary>
 		/// Returns true if this friend is online
@@ -75,7 +75,26 @@ public async Task RequestInfoAsync()
 
 		public Relationship Relationship => SteamFriends.Internal.GetFriendRelationship( Id );
 		public FriendState State => SteamFriends.Internal.GetFriendPersonaState( Id );
+		
+		/// <summary>
+		/// Returns the player's current Steam name.
+		/// <remarks>
+		///   Steam returns nicknames here if "Append nicknames to friends' names" is disabled in the Steam client.
+		/// </remarks> 
+		/// </summary>
 		public string Name => SteamFriends.Internal.GetFriendPersonaName( Id );
+		
+		/// <summary>
+		/// Returns the nickname that was set for this Steam player, if any.
+		/// <remarks>
+		///   Steam will never return nicknames if "Append nicknames to friends' names" is disabled in the Steam client.
+		/// </remarks>
+		/// </summary>
+		public string Nickname => SteamFriends.Internal.GetPlayerNickname( Id );
+		
+		/// <summary>
+		/// Returns the player's Steam name history.
+		/// </summary>
 		public IEnumerable<string> NameHistory
 		{
 			get
@@ -114,10 +133,10 @@ public bool IsIn( SteamId group_or_room )
 
 		public struct FriendGameInfo
 		{
-			internal ulong GameID; // m_gameID class CGameID
 			internal uint GameIP; // m_unGameIP uint32
 			internal ulong SteamIDLobby; // m_steamIDLobby class CSteamID
 
+			public GameId GameID;
 			public int ConnectionPort;
 			public int QueryPort;
 

Facepunch.Steamworks/Structs/GameId.cs

@@ -1,25 +1,18 @@
 using System;
-using System.Collections.Generic;
-using System.Runtime.InteropServices;
-using System.Text;
-
 
 namespace Steamworks.Data
 {
-	public struct GameId
+	public enum GameIdType : byte
 	{
-		// TODO - Be able to access these vars
+		App = 0,
+		GameMod = 1,
+		Shortcut = 2,
+		P2P = 3,
+	}
 	
+	public struct GameId : IEquatable<GameId>
+	{
 		/*
-		 
-		enum EGameIDType
-		{
-			k_EGameIDTypeApp		= 0,
-			k_EGameIDTypeGameMod	= 1,
-			k_EGameIDTypeShortcut	= 2,
-			k_EGameIDTypeP2P		= 3,
-		};
-
 		# ifdef VALVE_BIG_ENDIAN
 			unsigned int m_nModID : 32;
 			unsigned int m_nType : 8;
@@ -30,8 +23,31 @@ enum EGameIDType
 			unsigned int m_nModID : 32;
 		#endif
 		*/
+		
+		// 0xAAAAAAAA_BBCCCCCC
+		// A = m_nModID
+		// B = m_nType
+		// C = m_nAppID
 		public ulong Value;
 
+		public GameIdType Type
+		{
+			get => (GameIdType)(byte)( Value >> 24 );
+			set => Value = ( Value & 0xFFFFFFFF_00FFFFFF ) | ( (ulong)(byte)value << 24 );
+		}
+		
+		public uint AppId
+		{
+			get => (uint)( Value & 0x00000000_00FFFFFF );
+			set => Value = ( Value & 0xFFFFFFFF_FF000000 ) | (value & 0x00000000_00FFFFFF);
+		}
+		
+		public uint ModId
+		{
+			get => (uint)( Value >> 32 );
+			set => Value = ( Value & 0x00000000_FFFFFFFF ) | ( (ulong)value << 32 );
+		}
+
 		public static implicit operator GameId( ulong value )
 		{
 			return new GameId { Value = value };
@@ -41,5 +57,30 @@ public static implicit operator ulong( GameId value )
 		{
 			return value.Value;
 		}
+
+		public bool Equals(GameId other)
+		{
+			return Value == other.Value;
+		}
+
+		public override bool Equals(object obj)
+		{
+			return obj is GameId other && Equals(other);
+		}
+
+		public override int GetHashCode()
+		{
+			return Value.GetHashCode();
+		}
+
+		public static bool operator ==(GameId left, GameId right)
+		{
+			return left.Equals(right);
+		}
+
+		public static bool operator !=(GameId left, GameId right)
+		{
+			return !left.Equals(right);
+		}
 	}
 }