1 files changed, 18 insertions, 0 deletions
diff --git a/src/SMAPI/IMultiplayerHelper.cs b/src/SMAPI/IMultiplayerHelper.cs
index 43a0ac95..4067a676 100644
--- a/src/SMAPI/IMultiplayerHelper.cs
+++ b/src/SMAPI/IMultiplayerHelper.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using StardewValley;
 
@@ -11,5 +12,22 @@ namespace StardewModdingAPI
 
         /// <summary>Get the locations which are being actively synced from the host.</summary>
         IEnumerable<GameLocation> GetActiveLocations();
+
+        /// <summary>Get a connected player.</summary>
+        /// <param name="id">The player's unique ID.</param>
+        /// <returns>Returns the connected player, or <c>null</c> if no such player is connected.</returns>
+        IMultiplayerPeer GetConnectedPlayer(long id);
+
+        /// <summary>Get all connected players.</summary>
+        IEnumerable<IMultiplayerPeer> GetConnectedPlayers();
+
+        /// <summary>Send a message to mods installed by connected players.</summary>
+        /// <typeparam name="TMessage">The data type. This can be a class with a default constructor, or a value type.</typeparam>
+        /// <param name="message">The data to send over the network.</param>
+        /// <param name="messageType">A message type which receiving mods can use to decide whether it's the one they want to handle, like <c>SetPlayerLocation</c>. This doesn't need to be globally unique, since mods should check the originating mod ID.</param>
+        /// <param name="modIDs">The mod IDs which should receive the message on the destination computers, or <c>null</c> for all mods. Specifying mod IDs is recommended to improve performance, unless it's a general-purpose broadcast.</param>
+        /// <param name="playerIDs">The <see cref="Farmer.UniqueMultiplayerID" /> values for the players who should receive the message, or <c>null</c> for all players. If you don't need to broadcast to all players, specifying player IDs is recommended to reduce latency.</param>
+        /// <exception cref="ArgumentNullException">The <paramref name="message"/> or <paramref name="messageType" /> is null.</exception>
+        void SendMessage<TMessage>(TMessage message, string messageType, string[] modIDs = null, long[] playerIDs = null);
     }
 }