emulator: just saving my changes

.vscode/settings.json

@@ -1,4 +1,5 @@
 {
   "rust-analyzer.check.command": "clippy",
-  "editor.formatOnSave": true
+  "editor.formatOnSave": true,
+  "rust-analyzer.cargo.features": "all"
 }

Cargo.lock

@@ -558,6 +558,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
 [[package]]
 name = "byteorder-lite"
 version = "0.1.0"
@@ -744,6 +750,15 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "crossbeam-channel"
+version = "0.5.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82b8f8f868b36967f9606790d1903570de9ceaf870a7bf9fbbd3016d636a2cb2"
+dependencies = [
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.8.21"
@@ -794,7 +809,29 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.59.0",
+ "windows-sys 0.60.2",
+]
+
+[[package]]
+name = "discord-presence"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f91d7c2fc01ffdc327e2b66d65dd59b8bd3f31a17e88811ce0540412fa0b84c1"
+dependencies = [
+ "byteorder",
+ "bytes",
+ "cfg-if",
+ "crossbeam-channel",
+ "log",
+ "num-derive",
+ "num-traits",
+ "parking_lot",
+ "paste",
+ "quork",
+ "serde",
+ "serde_json",
+ "thiserror 2.0.12",
+ "uuid",
 ]
 
 [[package]]
@@ -1002,9 +1039,11 @@ dependencies = [
  "assembler",
  "common",
  "dirs",
+ "discord-presence",
  "eframe",
  "egui",
  "rfd",
+ "toml",
 ]
 
 [[package]]
@@ -1585,6 +1624,12 @@ dependencies = [
  "hashbrown",
 ]
 
+[[package]]
+name = "itoa"
+version = "1.0.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
+
 [[package]]
 name = "jni"
 version = "0.21.1"
@@ -1868,6 +1913,17 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2bf50223579dc7cdcfb3bfcacf7069ff68243f8c363f62ffa99cf000a6b9c451"
 
+[[package]]
+name = "num-derive"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.2.19"
@@ -2379,6 +2435,28 @@ dependencies = [
  "toml_edit",
 ]
 
+[[package]]
+name = "proc-macro-error-attr2"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96de42df36bb9bba5542fe9f1a054b8cc87e172759a1868aa05c1f3acc89dfc5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+]
+
+[[package]]
+name = "proc-macro-error2"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11ec05c52be0a07b08061f7dd003e7d7092e0472bc731b4af7bb1ef876109802"
+dependencies = [
+ "proc-macro-error-attr2",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.95"
@@ -2413,6 +2491,32 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "quork"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6bd9640e0addc098a3481fd53bdc23970e5dd0edf6b349403aa680fb576c8f83"
+dependencies = [
+ "cfg-if",
+ "nix 0.29.0",
+ "quork-proc",
+ "thiserror 2.0.12",
+ "windows-sys 0.59.0",
+]
+
+[[package]]
+name = "quork-proc"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "860d36740d9412e39fff90f57010e9870b15c2b48e5325295a6f5a824a480439"
+dependencies = [
+ "proc-macro-crate",
+ "proc-macro-error2",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "quote"
 version = "1.0.40"
@@ -2596,6 +2700,12 @@ version = "1.0.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a0d197bd2c9dc6e53b84da9556a69ba4cdfab8619eb41a8bd1cc2027a0f6b1d"
 
+[[package]]
+name = "ryu"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
+
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -2650,6 +2760,18 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_json"
+version = "1.0.140"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20068b6e96dc6c9bd23e01df8827e6c7e1f2fddd43c21810382803c136b99373"
+dependencies = [
+ "itoa",
+ "memchr",
+ "ryu",
+ "serde",
+]
+
 [[package]]
 name = "serde_repr"
 version = "0.1.20"
@@ -2661,6 +2783,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "serde_spanned"
+version = "0.6.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf41e0cfaf7226dca15e8197172c295a782857fcb97fad1808a166870dee75a3"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "sha1"
 version = "0.10.6"
@@ -2938,11 +3069,26 @@ dependencies = [
  "zerovec",
 ]
 
+[[package]]
+name = "toml"
+version = "0.8.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc1beb996b9d83529a9e75c17a1686767d148d70663143c7854d8b4a09ced362"
+dependencies = [
+ "serde",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_edit",
+]
+
 [[package]]
 name = "toml_datetime"
 version = "0.6.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "22cddaf88f4fbc13c51aebbf5f8eceb5c7c5a9da2ac40a13519eb5b0a0e8f11c"
+dependencies = [
+ "serde",
+]
 
 [[package]]
 name = "toml_edit"
@@ -2951,10 +3097,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "41fe8c660ae4257887cf66394862d21dbca4a6ddd26f04a3560410406a2f819a"
 dependencies = [
  "indexmap",
+ "serde",
+ "serde_spanned",
  "toml_datetime",
+ "toml_write",
  "winnow",
 ]
 
+[[package]]
+name = "toml_write"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d99f8c9a7727884afe522e9bd5edbfc91a3312b36a77b5fb8926e4c31a41801"
+
 [[package]]
 name = "tracing"
 version = "0.1.41"
@@ -3066,6 +3221,17 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "uuid"
+version = "1.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3cf4199d1e5d15ddd86a694e4d0dffa9c323ce759fea589f00fef9d81cc1931d"
+dependencies = [
+ "getrandom 0.3.3",
+ "js-sys",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "version_check"
 version = "0.9.5"
@@ -3544,6 +3710,15 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.60.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
+dependencies = [
+ "windows-targets 0.53.2",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.42.2"

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;