Initial version of Discord rich presence support.

Co-authored-by: Maki <mxmcube@gmail.com>
Co-authored-by: Dale Glass <dale@daleglass.net>

cmake/macros/TargetDiscordRPC.cmake

@@ -0,0 +1,6 @@
+macro(TARGET_DISCORD_RPC)
+    find_library(DISCORD_RPC_LIBRARY_RELEASE discord-rpc PATHS ${VCPKG_INSTALL_ROOT}/lib)
+    find_library(DISCORD_RPC_LIBRARY_DEBUG discord-rpc PATHS ${VCPKG_INSTALL_ROOT}/debug/lib)
+    select_library_configurations(DISCORD_RPC)
+    target_link_libraries(${TARGET_NAME} ${DISCORD_RPC_LIBRARY})
+endmacro()

cmake/ports/discord-rpc/disable-downloading.patch

@@ -0,0 +1,21 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 5dad9e9..961f02d 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -12,6 +12,7 @@ file(GLOB_RECURSE ALL_SOURCE_FILES
+     src/*.cpp src/*.h src/*.c
+ )
+ 
++if(0)
+ # Set CLANG_FORMAT_SUFFIX if you are using custom clang-format, e.g. clang-format-5.0
+ find_program(CLANG_FORMAT_CMD clang-format${CLANG_FORMAT_SUFFIX})
+ 
+@@ -43,7 +44,7 @@ if (NOT RAPIDJSONTEST)
+     )
+     file(REMOVE ${RJ_TAR_FILE})
+ endif(NOT RAPIDJSONTEST)
+-
++endif()
+ find_file(RAPIDJSON NAMES rapidjson rapidjson-1.1.0 PATHS ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty CMAKE_FIND_ROOT_PATH_BOTH)
+ 
+ add_library(rapidjson STATIC IMPORTED ${RAPIDJSON})

cmake/ports/discord-rpc/portfile.cmake

@@ -0,0 +1,33 @@
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO discordapp/discord-rpc
+    REF v3.4.0
+    SHA512 ca981b833aff5f21fd629a704deadd8e3fb5423d959ddb75e381313f6462d984c567671b10c8f031905c08d85792ddbe2dddc402ba2613c42de9e80fc68d0d51
+    HEAD_REF master
+    PATCHES disable-downloading.patch
+)
+
+string(COMPARE EQUAL "${VCPKG_CRT_LINKAGE}" "static" STATIC_CRT)
+file(REMOVE_RECURSE "${SOURCE_PATH}/thirdparty")
+
+vcpkg_cmake_configure(
+    SOURCE_PATH "${SOURCE_PATH}"
+    OPTIONS
+        -DUSE_STATIC_CRT=${STATIC_CRT}
+        -DBUILD_EXAMPLES=OFF
+        -DRAPIDJSONTEST=TRUE
+        "-DRAPIDJSON=${CURRENT_INSTALLED_DIR}"
+)
+
+if(EXISTS ${SOURCE_PATH}/thirdparty)
+    message(FATAL_ERROR "The source directory should not be modified during the build.")
+endif()
+
+vcpkg_cmake_install()
+
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")
+
+# Copy copright information
+file(INSTALL "${SOURCE_PATH}/LICENSE" DESTINATION "${CURRENT_PACKAGES_DIR}/share/discord-rpc" RENAME "copyright")
+
+vcpkg_copy_pdbs()

cmake/ports/discord-rpc/vcpkg.json

@@ -0,0 +1,18 @@
+{
+  "name": "discord-rpc",
+  "version": "3.4.0",
+  "port-version": 3,
+  "description": "Rich Presence allows you to leverage the totally overhauled \"Now Playing\" section in a Discord user's profile to help people play your game together.",
+  "homepage": "https://github.com/discordapp/discord-rpc",
+  "dependencies": [
+    "rapidjson",
+    {
+      "name": "vcpkg-cmake",
+      "host": true
+    },
+    {
+      "name": "vcpkg-cmake-config",
+      "host": true
+    }
+  ]
+}

cmake/ports/hifi-client-deps/CONTROL

@@ -1,4 +1,4 @@
 Source: hifi-client-deps
 Version: 0.1
 Description: Collected dependencies for High Fidelity applications
-Build-Depends: hifi-deps, aristo (windows), glslang, liblo (windows), nlohmann-json, openvr ((linux&!arm)|windows), quazip (!android), sdl2 (!android), spirv-cross (!android), spirv-tools (!android), sranipal (windows), vulkanmemoryallocator
+Build-Depends: hifi-deps, aristo (windows), glslang, liblo (windows), nlohmann-json, openvr ((linux&!arm)|windows), quazip (!android), sdl2 (!android), spirv-cross (!android), spirv-tools (!android), sranipal (windows), vulkanmemoryallocator, discord-rpc (!android)

cmake/ports/rapidjson/portfile.cmake

@@ -0,0 +1,43 @@
+#header-only library
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO Tencent/rapidjson
+    REF a95e013b97ca6523f32da23f5095fcc9dd6067e5 # accessed on 2023-07-17
+    SHA512 19bf9a579df70cbeaf60c7ccf25c92c327bffe95b0df14f27f2132134d5bb214e98a45e021eb287c4790e301f84bb095e0bdb3c97f65a37fbeb254970d97c005
+    FILE_DISAMBIGUATOR 2
+    HEAD_REF master
+)
+
+# Use RapidJSON's own build process, skipping examples and tests
+vcpkg_cmake_configure(
+    SOURCE_PATH "${SOURCE_PATH}"
+    OPTIONS
+        -DRAPIDJSON_BUILD_DOC=OFF
+        -DRAPIDJSON_BUILD_EXAMPLES=OFF
+        -DRAPIDJSON_BUILD_TESTS=OFF
+)
+vcpkg_cmake_install()
+
+if(VCPKG_TARGET_IS_WINDOWS)
+    vcpkg_cmake_config_fixup(CONFIG_PATH cmake)
+else()
+    vcpkg_cmake_config_fixup(CONFIG_PATH lib/cmake/RapidJSON)
+endif()
+
+vcpkg_fixup_pkgconfig()
+
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/share/doc")
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include" "${CURRENT_PACKAGES_DIR}/debug/share")
+
+if(VCPKG_TARGET_IS_WINDOWS)
+    file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug" "${CURRENT_PACKAGES_DIR}/lib")
+endif()
+
+file(READ "${CURRENT_PACKAGES_DIR}/share/${PORT}/RapidJSONConfig.cmake" _contents)
+string(REPLACE "\${RapidJSON_SOURCE_DIR}" "\${RapidJSON_CMAKE_DIR}/../.." _contents "${_contents}")
+string(REPLACE "set( RapidJSON_SOURCE_DIR \"${SOURCE_PATH}\")" "" _contents "${_contents}")
+string(REPLACE "set( RapidJSON_DIR \"${CURRENT_BUILDTREES_DIR}/${TARGET_TRIPLET}-rel\")" "" _contents "${_contents}")
+string(REPLACE "\${RapidJSON_CMAKE_DIR}/../../../include" "\${RapidJSON_CMAKE_DIR}/../../include" _contents "${_contents}")
+file(WRITE "${CURRENT_PACKAGES_DIR}/share/${PORT}/RapidJSONConfig.cmake" "${_contents}\nset(RAPIDJSON_INCLUDE_DIRS \"\${RapidJSON_INCLUDE_DIRS}\")\n")
+
+file(INSTALL "${SOURCE_PATH}/license.txt" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}" RENAME copyright)

cmake/ports/rapidjson/vcpkg.json

@@ -0,0 +1,17 @@
+{
+  "name": "rapidjson",
+  "version-date": "2023-07-17",
+  "description": "A fast JSON parser/generator for C++ with both SAX/DOM style API <http://rapidjson.org/>",
+  "homepage": "http://rapidjson.org/",
+  "license": "MIT",
+  "dependencies": [
+    {
+      "name": "vcpkg-cmake",
+      "host": true
+    },
+    {
+      "name": "vcpkg-cmake-config",
+      "host": true
+    }
+  ]
+}

interface/CMakeLists.txt

@@ -247,6 +247,7 @@ target_opengl()
 add_crashpad()
 target_breakpad()
 target_json()
+target_discord_rpc()
 
 # perform standard include and linking for found externals
 foreach(EXTERNAL ${OPTIONAL_EXTERNALS})

interface/src/Application.cpp

@@ -2561,6 +2561,9 @@ Application::Application(
     DependencyManager::get<TabletScriptingInterface>()->preloadSounds();
     DependencyManager::get<Keyboard>()->createKeyboard();
 
+    // Initialize Discord rich presence
+    _discordPresence = new DiscordPresence();
+
     FileDialogHelper::setOpenDirectoryOperator([this](const QString& path) { openDirectory(path); });
     QDesktopServices::setUrlHandler("file", this, "showUrlHandler");
     QDesktopServices::setUrlHandler("", this, "showUrlHandler");

interface/src/Application.h

@@ -79,6 +79,7 @@
 #include "ui/OctreeStatsDialog.h"
 #include "ui/OverlayConductor.h"
 #include "ui/overlays/Overlays.h"
+#include "DiscordRichPresence.h"
 
 #include "workload/GameWorkload.h"
 #include "graphics/GraphicsEngine.h"
@@ -857,5 +858,7 @@ private:
     VisionSqueeze _visionSqueeze;
 
     bool _crashOnShutdown { false };
+
+    DiscordPresence* _discordPresence{ nullptr };
 };
 #endif // hifi_Application_h

interface/src/DiscordRichPresence.cpp

@@ -0,0 +1,79 @@
+//
+//  DiscordRichPresence.cpp
+//  interface/src
+//
+//  Created by Julian Groß on 30th October 2023.
+//  Copyright 2023 Overte e.V.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//  SPDX-License-Identifier: Apache-2.0
+//
+
+#include <QtCore/QString>
+#include <QtCore/QDebug>
+#include <QtCore/QDateTime>
+#include <QtCore/QLoggingCategory>
+#include <QtCore/QObject>
+
+#include "discord_rpc.h"
+#include "DiscordRichPresence.h"
+#include "DependencyManager.h"
+#include "AddressManager.h"
+#include "EntityTreeRenderer.h"
+
+#define DISCORD_APPLICATION_CLIENT_ID "1168082546270163014"
+#define STEAM_APPLICATION_ID "1234" // placeholder since we don't have a Steam application ID yet
+
+Q_LOGGING_CATEGORY(discord_rich_presence, "overte.discord_rich_presence")
+
+DiscordPresence::DiscordPresence()
+{
+    DiscordEventHandlers handlers;
+    Discord_Initialize(DISCORD_APPLICATION_CLIENT_ID, &handlers, 1, STEAM_APPLICATION_ID);
+    const int64_t startEpoch = QDateTime::currentSecsSinceEpoch();
+    discordPresence.startTimestamp = startEpoch;
+    auto addressManager = DependencyManager::get<AddressManager>();
+    connect(addressManager.data(), &AddressManager::hostChanged, this, &DiscordPresence::domainChanged);
+}
+
+void DiscordPresence::shutdown()
+{
+    Discord_Shutdown();
+}
+
+void DiscordPresence::domainChanged()
+{
+    const auto addressManager = DependencyManager::get<AddressManager>();
+    if (!addressManager) return;
+    const auto entityTreeRenderer = DependencyManager::get<EntityTreeRenderer>();
+    if (!entityTreeRenderer) return;
+
+    // only continue if domain id changed or is serverless
+    bool isServerless = false;
+    const auto tree = entityTreeRenderer->getTree();
+    if (tree) isServerless = tree->isServerlessMode();
+    QString domainID = addressManager->getDomainID();
+    if (currentDomainID == domainID && !isServerless) return;
+    currentDomainID = domainID;
+
+    // get data
+    QString state;
+    // TODO: switch to getPlaceName once https://github.com/overte-org/overte/issues/684 is fixed
+    const QString worldName = addressManager->getHost();
+    qCDebug(discord_rich_presence) << "Discord log hostName: " + worldName;
+    if (isServerless) {
+        state = "In a serverless world";
+    } else {
+        state = ("In " + worldName);
+    }
+
+    // create Discord presence payload
+    QByteArray state_data = state.toUtf8();
+    discordPresence.state = state_data.constData();
+    discordPresence.largeImageKey = "header";
+    discordPresence.smallImageKey = "logo";
+
+    // update activity
+    Discord_UpdatePresence(&discordPresence);
+}

interface/src/DiscordRichPresence.h

@@ -0,0 +1,36 @@
+//
+//  DiscordRichPresence.h
+//  interface/src
+//
+//  Created by Julian Groß on 30th October 2023.
+//  Copyright 2023 Overte e.V.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//  SPDX-License-Identifier: Apache-2.0
+//
+
+#ifndef overte_DiscordPresence_h
+#define overte_DiscordPresence_h
+
+#include "discord_rpc.h"
+#include <QtCore/QLoggingCategory>
+#include <QtCore/QObject>
+
+Q_DECLARE_LOGGING_CATEGORY(discord_rich_presence)
+
+class DiscordPresence : public QObject {
+    Q_OBJECT
+public:
+    DiscordPresence();
+    void shutdown();
+
+public slots:
+    void domainChanged();
+
+private:
+    QString currentDomainID;
+    DiscordRichPresence discordPresence{};
+};
+
+#endif