feat!: Refactor, Update to version 2.5.x, Add Battle Scepter

proto/proto-derive/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "proto-derive"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+syn = "2.0.53"
+quote = "1.0.35"
+proc-macro2 = "1.0.79"
+
+[lib]
+proc-macro = true

proto/proto-derive/src/lib.rs

@@ -0,0 +1,27 @@
+use proc_macro::TokenStream;
+use quote::{quote, ToTokens};
+use syn::{parse_macro_input, DeriveInput, Meta, MetaList};
+
+#[proc_macro_derive(CmdID, attributes(cmdid))]
+pub fn message_id_derive(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);
+    let struct_name = input.ident;
+
+    let id = match input
+        .attrs
+        .iter()
+        .find(|attr| attr.path().is_ident("cmdid"))
+    {
+        Some(attr) => match attr.meta {
+            Meta::List(MetaList { ref tokens, .. }) => tokens.into_token_stream(),
+            _ => panic!("Invalid cmdid attribute value"),
+        },
+        _ => 0u16.into_token_stream(),
+    };
+
+    TokenStream::from(quote! {
+        impl crate::CmdID for #struct_name {
+            const CMD_ID: u16 = #id;
+        }
+    })
+}