1 files changed, 231 insertions, 0 deletions
diff --git a/externals/discord-rpc/examples/button-clicker/Assets/DiscordRpc.cs b/externals/discord-rpc/examples/button-clicker/Assets/DiscordRpc.cs
new file mode 100644
index 0000000000..f3b1ee5978
--- /dev/null
+++ b/externals/discord-rpc/examples/button-clicker/Assets/DiscordRpc.cs
@@ -0,0 +1,231 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using System.Text;
+using AOT;
+
+public class DiscordRpc
+{
+    [MonoPInvokeCallback(typeof(OnReadyInfo))]
+    public static void ReadyCallback(ref DiscordUser connectedUser) { Callbacks.readyCallback(ref connectedUser); }
+    public delegate void OnReadyInfo(ref DiscordUser connectedUser);
+
+    [MonoPInvokeCallback(typeof(OnDisconnectedInfo))]
+    public static void DisconnectedCallback(int errorCode, string message) { Callbacks.disconnectedCallback(errorCode, message); }
+    public delegate void OnDisconnectedInfo(int errorCode, string message);
+
+    [MonoPInvokeCallback(typeof(OnErrorInfo))]
+    public static void ErrorCallback(int errorCode, string message) { Callbacks.errorCallback(errorCode, message); }
+    public delegate void OnErrorInfo(int errorCode, string message);
+
+    [MonoPInvokeCallback(typeof(OnJoinInfo))]
+    public static void JoinCallback(string secret) { Callbacks.joinCallback(secret); }
+    public delegate void OnJoinInfo(string secret);
+
+    [MonoPInvokeCallback(typeof(OnSpectateInfo))]
+    public static void SpectateCallback(string secret) { Callbacks.spectateCallback(secret); }
+    public delegate void OnSpectateInfo(string secret);
+
+    [MonoPInvokeCallback(typeof(OnRequestInfo))]
+    public static void RequestCallback(ref DiscordUser request) { Callbacks.requestCallback(ref request); }
+    public delegate void OnRequestInfo(ref DiscordUser request);
+
+    static EventHandlers Callbacks { get; set; }
+
+    public struct EventHandlers
+    {
+        public OnReadyInfo readyCallback;
+        public OnDisconnectedInfo disconnectedCallback;
+        public OnErrorInfo errorCallback;
+        public OnJoinInfo joinCallback;
+        public OnSpectateInfo spectateCallback;
+        public OnRequestInfo requestCallback;
+    }
+
+    [Serializable, StructLayout(LayoutKind.Sequential)]
+    public struct RichPresenceStruct
+    {
+        public IntPtr state; /* max 128 bytes */
+        public IntPtr details; /* max 128 bytes */
+        public long startTimestamp;
+        public long endTimestamp;
+        public IntPtr largeImageKey; /* max 32 bytes */
+        public IntPtr largeImageText; /* max 128 bytes */
+        public IntPtr smallImageKey; /* max 32 bytes */
+        public IntPtr smallImageText; /* max 128 bytes */
+        public IntPtr partyId; /* max 128 bytes */
+        public int partySize;
+        public int partyMax;
+        public int partyPrivacy;
+        public IntPtr matchSecret; /* max 128 bytes */
+        public IntPtr joinSecret; /* max 128 bytes */
+        public IntPtr spectateSecret; /* max 128 bytes */
+        public bool instance;
+    }
+
+    [Serializable]
+    public struct DiscordUser
+    {
+        public string userId;
+        public string username;
+        public string discriminator;
+        public string avatar;
+    }
+
+    public enum Reply
+    {
+        No = 0,
+        Yes = 1,
+        Ignore = 2
+    }
+
+    public enum PartyPrivacy
+    {
+        Private = 0,
+        Public = 1
+    }
+
+    public static void Initialize(string applicationId, ref EventHandlers handlers, bool autoRegister, string optionalSteamId)
+    {
+        Callbacks = handlers;
+
+        EventHandlers staticEventHandlers = new EventHandlers();
+        staticEventHandlers.readyCallback += DiscordRpc.ReadyCallback;
+        staticEventHandlers.disconnectedCallback += DiscordRpc.DisconnectedCallback;
+        staticEventHandlers.errorCallback += DiscordRpc.ErrorCallback;
+        staticEventHandlers.joinCallback += DiscordRpc.JoinCallback;
+        staticEventHandlers.spectateCallback += DiscordRpc.SpectateCallback;
+        staticEventHandlers.requestCallback += DiscordRpc.RequestCallback;
+
+        InitializeInternal(applicationId, ref staticEventHandlers, autoRegister, optionalSteamId);
+    }
+
+    [DllImport("discord-rpc", EntryPoint = "Discord_Initialize", CallingConvention = CallingConvention.Cdecl)]
+    static extern void InitializeInternal(string applicationId, ref EventHandlers handlers, bool autoRegister, string optionalSteamId);
+
+    [DllImport("discord-rpc", EntryPoint = "Discord_Shutdown", CallingConvention = CallingConvention.Cdecl)]
+    public static extern void Shutdown();
+
+    [DllImport("discord-rpc", EntryPoint = "Discord_RunCallbacks", CallingConvention = CallingConvention.Cdecl)]
+    public static extern void RunCallbacks();
+
+    [DllImport("discord-rpc", EntryPoint = "Discord_UpdatePresence", CallingConvention = CallingConvention.Cdecl)]
+    private static extern void UpdatePresenceNative(ref RichPresenceStruct presence);
+
+    [DllImport("discord-rpc", EntryPoint = "Discord_ClearPresence", CallingConvention = CallingConvention.Cdecl)]
+    public static extern void ClearPresence();
+
+    [DllImport("discord-rpc", EntryPoint = "Discord_Respond", CallingConvention = CallingConvention.Cdecl)]
+    public static extern void Respond(string userId, Reply reply);
+
+    [DllImport("discord-rpc", EntryPoint = "Discord_UpdateHandlers", CallingConvention = CallingConvention.Cdecl)]
+    public static extern void UpdateHandlers(ref EventHandlers handlers);
+
+    public static void UpdatePresence(RichPresence presence)
+    {
+        var presencestruct = presence.GetStruct();
+        UpdatePresenceNative(ref presencestruct);
+        presence.FreeMem();
+    }
+
+    public class RichPresence
+    {
+        private RichPresenceStruct _presence;
+        private readonly List<IntPtr> _buffers = new List<IntPtr>(10);
+
+        public string state; /* max 128 bytes */
+        public string details; /* max 128 bytes */
+        public long startTimestamp;
+        public long endTimestamp;
+        public string largeImageKey; /* max 32 bytes */
+        public string largeImageText; /* max 128 bytes */
+        public string smallImageKey; /* max 32 bytes */
+        public string smallImageText; /* max 128 bytes */
+        public string partyId; /* max 128 bytes */
+        public int partySize;
+        public int partyMax;
+        public PartyPrivacy partyPrivacy;
+        public string matchSecret; /* max 128 bytes */
+        public string joinSecret; /* max 128 bytes */
+        public string spectateSecret; /* max 128 bytes */
+        public bool instance;
+
+        /// <summary>
+        /// Get the <see cref="RichPresenceStruct"/> reprensentation of this instance
+        /// </summary>
+        /// <returns><see cref="RichPresenceStruct"/> reprensentation of this instance</returns>
+        internal RichPresenceStruct GetStruct()
+        {
+            if (_buffers.Count > 0)
+            {
+                FreeMem();
+            }
+
+            _presence.state = StrToPtr(state);
+            _presence.details = StrToPtr(details);
+            _presence.startTimestamp = startTimestamp;
+            _presence.endTimestamp = endTimestamp;
+            _presence.largeImageKey = StrToPtr(largeImageKey);
+            _presence.largeImageText = StrToPtr(largeImageText);
+            _presence.smallImageKey = StrToPtr(smallImageKey);
+            _presence.smallImageText = StrToPtr(smallImageText);
+            _presence.partyId = StrToPtr(partyId);
+            _presence.partySize = partySize;
+            _presence.partyMax = partyMax;
+            _presence.partyPrivacy = (int)partyPrivacy;
+            _presence.matchSecret = StrToPtr(matchSecret);
+            _presence.joinSecret = StrToPtr(joinSecret);
+            _presence.spectateSecret = StrToPtr(spectateSecret);
+            _presence.instance = instance;
+
+            return _presence;
+        }
+
+        /// <summary>
+        /// Returns a pointer to a representation of the given string with a size of maxbytes
+        /// </summary>
+        /// <param name="input">String to convert</param>
+        /// <returns>Pointer to the UTF-8 representation of <see cref="input"/></returns>
+        private IntPtr StrToPtr(string input)
+        {
+            if (string.IsNullOrEmpty(input)) return IntPtr.Zero;
+            var convbytecnt = Encoding.UTF8.GetByteCount(input);
+            var buffer = Marshal.AllocHGlobal(convbytecnt + 1);
+            for (int i = 0; i < convbytecnt + 1; i++)
+            {
+                Marshal.WriteByte(buffer, i, 0);
+            }
+            _buffers.Add(buffer);
+            Marshal.Copy(Encoding.UTF8.GetBytes(input), 0, buffer, convbytecnt);
+            return buffer;
+        }
+
+        /// <summary>
+        /// Convert string to UTF-8 and add null termination
+        /// </summary>
+        /// <param name="toconv">string to convert</param>
+        /// <returns>UTF-8 representation of <see cref="toconv"/> with added null termination</returns>
+        private static string StrToUtf8NullTerm(string toconv)
+        {
+            var str = toconv.Trim();
+            var bytes = Encoding.Default.GetBytes(str);
+            if (bytes.Length > 0 && bytes[bytes.Length - 1] != 0)
+            {
+                str += "\0\0";
+            }
+            return Encoding.UTF8.GetString(Encoding.UTF8.GetBytes(str));
+        }
+
+        /// <summary>
+        /// Free the allocated memory for conversion to <see cref="RichPresenceStruct"/>
+        /// </summary>
+        internal void FreeMem()
+        {
+            for (var i = _buffers.Count - 1; i >= 0; i--)
+            {
+                Marshal.FreeHGlobal(_buffers[i]);
+                _buffers.RemoveAt(i);
+            }
+        }
+    }
+}
+\ No newline at end of file