.gitignore

@@ -0,0 +1,3 @@
+.direnv/
+target/
+test_data/

Cargo.toml

@@ -0,0 +1,4 @@
+
+[workspace]
+resolver = "3"
+members = [ "parser","player"]

README.md

@@ -1,2 +0,0 @@
-# bmrs
-

flake.lock

@@ -0,0 +1,96 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1751271578,
+        "narHash": "sha256-P/SQmKDu06x8yv7i0s8bvnnuJYkxVGBWLWHaU+tt4YY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "3016b4b15d13f3089db8a41ef937b13a9e33a8df",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1744536153,
+        "narHash": "sha256-awS2zRgF4uTwrOKwwiJcByDzDOdo3Q1rPZbiHQg/N38=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "18dd725c29603f582cf1900e0d25f9f1063dbf11",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay",
+        "utils": "utils"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1751510438,
+        "narHash": "sha256-m8PjOoyyCR4nhqtHEBP1tB/jF+gJYYguSZmUmVTEAQE=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "7f415261f298656f8164bd636c0dc05af4e95b6b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,48 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+    utils.url = "github:numtide/flake-utils";
+  };
+  outputs = {
+    self,
+    nixpkgs,
+    utils,
+    rust-overlay,
+  }:
+    utils.lib.eachDefaultSystem (
+      system: let
+        overlays = [(import rust-overlay)];
+        pkgs = import nixpkgs {
+          inherit system overlays;
+        };
+        bi = with pkgs; [
+          libxkbcommon
+          udev
+          alsa-lib
+          xorg.libXcursor
+          xorg.libXrandr
+          xorg.libXi
+          vulkan-tools
+          vulkan-headers
+          vulkan-loader
+          vulkan-validation-layers
+          pkgs.llvmPackages.bintools
+          clang
+          llvm
+          llvmPackages.libclang
+          rust-bin.stable.latest.default
+          rust-analyzer
+        ];
+      in {
+        devShell = pkgs.mkShell {
+          nativeBuildInputs = with pkgs; [
+            pkg-config
+            # Everything below is a hard bevy dep
+          ];
+          buildInputs = bi;
+          LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath bi;
+        };
+      }
+    );
+}

parser/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "parser"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+strum = "0.27.1"
+strum_macros = "0.27.1"
+winnow = "0.7.11"

parser/README.md

@@ -0,0 +1,11 @@
+# Parser library
+This is a parser for the BMS file format.
+Right now its goal is correctness of behaviour for what our _users_ expect as
+opposed to what the informal specs say.
+
+This means we will inherit defaults from the most popular players such as LR2.
+
+## Resources
+[BMS command memo by hitkey](https://hitkey.bms.ms/cmds.htm) was invaluable when
+writing this. Whilst it's rough around the edges from machine translation it's
+one of the most thorough English-language documents detailing the BMS spec.

parser/src/header.rs

@@ -0,0 +1,19 @@
+struct Header {
+    player: Player,
+}
+
+/// Defines the play side.
+#[derive(FromRepr, Debug, PartialEq, Clone)]
+#[repr(u8)]
+enum Player {
+    One,   // SP
+    Two,   // Couple play
+    Three, // DP
+    Four,  // Battle Play. This is very, very rare
+}
+
+impl Default for Player {
+    fn default() -> Self {
+        Self::One
+    }
+}

parser/src/lib.rs

@@ -0,0 +1,14 @@
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}

player/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "player"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+bevy = { version = "0.16.1", features = ["dynamic_linking"] }

player/src/main.rs

@@ -0,0 +1,5 @@
+use bevy::prelude::*;
+
+fn main() {
+    App::new().add_plugins(DefaultPlugins).run();
+}