Add Discord RPC (#161)

* Add discord-rpc submodule

* Add Discord RPC

* Fix up Discord status

* Fix CMake because MacOS sucks

* Slightly less hacky fix

include/config.hpp

@@ -6,6 +6,7 @@
 // Remember to initialize every field here to its default value otherwise bad things will happen
 struct EmulatorConfig {
 	bool shaderJitEnabled = false;
+	bool discordRpcEnabled = false;
 	RendererType rendererType = RendererType::OpenGL;
 
 	EmulatorConfig(const std::filesystem::path& path);

include/discord_rpc.hpp

@@ -0,0 +1,23 @@
+#pragma once
+
+#ifdef PANDA3DS_ENABLE_DISCORD_RPC
+#include <discord_rpc.h>
+
+#include <cstdint>
+#include <string>
+
+namespace Discord {
+	enum class RPCStatus { Idling, Playing };
+
+	class RPC {
+		std::uint64_t startTimestamp;
+		bool enabled = false;
+
+	  public:
+		void init();
+		void update(RPCStatus status, const std::string& title);
+		void stop();
+	};
+}  // namespace Discord
+
+#endif

include/emulator.hpp

@@ -11,6 +11,7 @@
 #include "config.hpp"
 #include "cpu.hpp"
 #include "crypto/aes_engine.hpp"
+#include "discord_rpc.hpp"
 #include "io_file.hpp"
 #include "memory.hpp"
 
@@ -64,6 +65,11 @@ class Emulator {
 	friend struct HttpServer;
 #endif
 
+#ifdef PANDA3DS_ENABLE_DISCORD_RPC
+	Discord::RPC discordRpc;
+#endif
+	void updateDiscord();
+
 	// Keep the handle for the ROM here to reload when necessary and to prevent deleting it
 	// This is currently only used for ELFs, NCSDs use the IOFile API instead
 	std::ifstream loadedELF;