emulator: just saving my changes

emulator/Cargo.toml

@@ -14,3 +14,9 @@ eframe = "0.31.1"
 egui = "0.31.1"
 rfd = "0.15.3"
 dirs = "6.0.0"
+discord-presence = { version = "1.6.0", optional = true }
+toml = { version = "0.8.23", optional = true }
+
+[features]
+discord-rpc = ["dep:discord-presence"]
+config = ["dep:toml"]

emulator/src/emulator/config.rs

@@ -0,0 +1,2 @@
+//! Loads configuration information from a TOML file in the current working directory.
+//! Currently doesn't do much but this may be expanded.

emulator/src/emulator/misc/mod.rs

@@ -0,0 +1,2 @@
+#[cfg(feature = "discord-rpc")]
+pub mod rpc;

emulator/src/emulator/misc/rpc.rs

@@ -0,0 +1,56 @@
+//! Just for fun I thought I would add a Discord RPC client to the emulator.
+//!
+//! This will display information like the current value of PCX, architecture name and
+//! GitHub repo links to show off the ISA. Perhaps in the future if we cross-compile to
+//! WASM we could include a link to run this software in the browser.
+//!
+//!
+//! # Configuration
+//!
+//! This may be disabled like so in your `.dsarc.toml` file:
+//!
+//! ```toml
+//! [misc]
+//! use_discord_rpc = false
+//! ```
+//!
+//! Alternatively, you can hide this in your Discord settings.
+
+use discord_presence::{Client, DiscordError};
+
+#[derive(Debug)]
+pub enum DiscordRpcError {
+    Client(DiscordError),
+}
+
+impl std::fmt::Display for DiscordRpcError {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::Client(why) => write!(f, "discord RPC error: {why}"),
+        }
+    }
+}
+
+impl std::error::Error for DiscordRpcError {}
+
+impl From<DiscordError> for DiscordRpcError {
+    fn from(err: DiscordError) -> Self {
+        Self::Client(err)
+    }
+}
+
+/// Sets up the Discord RPC client.
+#[expect(clippy::unreadable_literal)]
+pub fn start_rpc() -> Result<Client, DiscordRpcError> {
+    let mut client = discord_presence::Client::new(1384303074088190042);
+
+    _ = client.on_ready(|ctx| {
+        eprintln!("The discord RPC client is ready. Got event {:?}", ctx.event);
+    });
+
+    client.start();
+
+    client.set_activity(|act| act)?;
+
+    Ok(client)
+}

emulator/src/emulator/mod.rs

@@ -1,2 +1,5 @@
+#[cfg(feature = "config")]
+pub mod config;
+pub mod misc;
 pub mod system;
 pub mod ui;