add derive mcbufreadable/writable

azalea-protocol/packet-macros/src/lib.rs

@@ -6,6 +6,118 @@ use syn::{
     parse_macro_input, DeriveInput, FieldsNamed, Ident, LitInt, Token,
 };
 
+#[proc_macro_derive(McBufReadable, attributes(varint))]
+pub fn derive_mcbufreadable(input: TokenStream) -> TokenStream {
+    let DeriveInput { ident, data, .. } = parse_macro_input!(input);
+
+    let fields = match data {
+        syn::Data::Struct(syn::DataStruct { fields, .. }) => fields,
+        _ => panic!("#[derive(*Packet)] can only be used on structs"),
+    };
+    let FieldsNamed { named, .. } = match fields {
+        syn::Fields::Named(f) => f,
+        _ => panic!("#[derive(*Packet)] can only be used on structs with named fields"),
+    };
+
+    let read_fields = named
+        .iter()
+        .map(|f| {
+            let field_name = &f.ident;
+            let field_type = &f.ty;
+            // do a different buf.write_* for each field depending on the type
+            // if it's a string, use buf.write_string
+            match field_type {
+                syn::Type::Path(_) => {
+                        if f.attrs.iter().any(|a| a.path.is_ident("varint")) {
+                            quote! {
+                                let #field_name = crate::mc_buf::McBufVarintReadable::varint_read_into(buf).await?;
+                            }
+                        } else {
+                            quote! {
+                                let #field_name = crate::mc_buf::McBufReadable::read_into(buf).await?;
+                            }
+                    }
+                }
+                _ => panic!(
+                    "Error reading field {}: {}",
+                    field_name.clone().unwrap(),
+                    field_type.to_token_stream()
+                ),
+            }
+        })
+        .collect::<Vec<_>>();
+    let read_field_names = named.iter().map(|f| &f.ident).collect::<Vec<_>>();
+
+    quote! {
+    #[async_trait::async_trait]
+
+    impl crate::mc_buf::McBufReadable for #ident {
+        async fn read_into<R>(buf: &mut R) -> Result<Self, String>
+        where
+            R: AsyncRead + std::marker::Unpin + std::marker::Send,
+        {
+            #(#read_fields)*
+            Ok(#ident {
+                #(#read_field_names: #read_field_names),*
+            })
+        }
+    }
+    }
+    .into()
+}
+
+#[proc_macro_derive(McBufWritable, attributes(varint))]
+pub fn derive_mcbufwritable(input: TokenStream) -> TokenStream {
+    let DeriveInput { ident, data, .. } = parse_macro_input!(input);
+
+    let fields = match data {
+        syn::Data::Struct(syn::DataStruct { fields, .. }) => fields,
+        _ => panic!("#[derive(*Packet)] can only be used on structs"),
+    };
+    let FieldsNamed { named, .. } = match fields {
+        syn::Fields::Named(f) => f,
+        _ => panic!("#[derive(*Packet)] can only be used on structs with named fields"),
+    };
+
+    let write_fields = named
+        .iter()
+        .map(|f| {
+            let field_name = &f.ident;
+            let field_type = &f.ty;
+            // do a different buf.write_* for each field depending on the type
+            // if it's a string, use buf.write_string
+            match field_type {
+                syn::Type::Path(_) => {
+                    if f.attrs.iter().any(|attr| attr.path.is_ident("varint")) {
+                        quote! {
+                            crate::mc_buf::McBufVarintWritable::varint_write_into(&self.#field_name, buf)?;
+                        }
+                    } else {
+                        quote! {
+                            crate::mc_buf::McBufWritable::write_into(&self.#field_name, buf)?;
+                        }
+                    }
+                }
+                _ => panic!(
+                    "Error writing field {}: {}",
+                    field_name.clone().unwrap(),
+                    field_type.to_token_stream()
+                ),
+            }
+        })
+        .collect::<Vec<_>>();
+
+    quote! {
+        impl crate::mc_buf::McBufWritable for #ident {
+            fn write_into(&self, buf: &mut Vec<u8>) -> Result<(), std::io::Error> {
+                #(#write_fields)*
+                Ok(())
+            }
+        }
+    }
+    .into()
+}
+
 fn as_packet_derive(input: TokenStream, state: proc_macro2::TokenStream) -> TokenStream {
     let DeriveInput { ident, data, .. } = parse_macro_input!(input);
 

azalea-protocol/src/mc_buf/write.rs

@@ -2,7 +2,7 @@ use super::{UnsizedByteArray, MAX_STRING_LENGTH};
 use async_trait::async_trait;
 use azalea_chat::component::Component;
 use azalea_core::{
-    difficulty::Difficulty, game_type::GameType, resource_location::ResourceLocation,
+    difficulty::Difficulty, game_type::GameType, resource_location::ResourceLocation, Slot,
 };
 use byteorder::{BigEndian, WriteBytesExt};
 use std::io::Write;
@@ -337,3 +337,19 @@ impl McBufWritable for Component {
         todo!()
     }
 }
+
+// Slot
+impl McBufWritable for Slot {
+    fn write_into(&self, buf: &mut Vec<u8>) -> Result<(), std::io::Error> {
+        match self {
+            Slot::Empty => buf.write_byte(0)?,
+            Slot::Present(i) => {
+                buf.write_varint(i.id)?;
+                buf.write_byte(i.count)?;
+                buf.write_nbt(&i.nbt)?;
+            }
+        }
+
+        Ok(())
+    }
+}

azalea-protocol/src/packets/game/clientbound_update_recipes_packet.rs

@@ -1,7 +1,7 @@
 use async_trait::async_trait;
 use azalea_chat::component::Component;
 use azalea_core::{resource_location::ResourceLocation, Slot};
-use packet_macros::GamePacket;
+use packet_macros::{GamePacket, McBufReadable, McBufWritable};
 use tokio::io::AsyncRead;
 
 use crate::mc_buf::{McBufReadable, McBufWritable, Readable, Writable};
@@ -17,19 +17,70 @@ pub struct Recipe {
     pub data: RecipeData,
 }
 
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, McBufReadable, McBufWritable)]
-pub enum RecipeData {
+pub struct ShapelessRecipe {
-    CraftingShapeless {
+    /// Used to group similar recipes together in the recipe book.
-        /// Used to group similar recipes together in the recipe book.
+    /// Tag is present in recipe JSON
-        /// Tag is present in recipe JSON
+    group: String,
-        group: String,
+    ingredients: Vec<Ingredient>,
-        // ingredients
+    result: Slot,
-        ingredients: Vec<Ingredient>,
+}
-        result: Slot,
+#[derive(Clone, Debug, McBufReadable, McBufWritable)]
-    },
+pub struct ShapedRecipe {
+    width: u32,
+    height: u32,
+    group: String,
+    ingredients: Vec<Ingredient>,
+    result: Slot,
+}
+#[derive(Clone, Debug, McBufReadable, McBufWritable)]
+pub struct CookingRecipe {
+    group: String,
+    ingredient: Ingredient,
+    result: Slot,
+    experience: f32,
+    #[varint]
+    cooking_time: u32,
+}
+#[derive(Clone, Debug, McBufReadable, McBufWritable)]
+pub struct StoneCuttingRecipe {
+    group: String,
+    ingredient: Ingredient,
+    result: Slot,
+}
+#[derive(Clone, Debug, McBufReadable, McBufWritable)]
+pub struct SmithingRecipe {
+    base: Ingredient,
+    addition: Ingredient,
+    result: Slot,
 }
 
 #[derive(Clone, Debug)]
+pub enum RecipeData {
+    CraftingShapeless(ShapelessRecipe),
+    CraftingShaped(ShapedRecipe),
+    CraftingSpecialArmorDye,
+    CraftingSpecialBookCloning,
+    CraftingSpecialMapCloning,
+    CraftingSpecialMapExtending,
+    CraftingSpecialFireworkRocket,
+    CraftingSpecialFireworkStar,
+    CraftingSpecialFireworkStarFade,
+    CraftingSpecialRepairItem,
+    CraftingSpecialTippedArrow,
+    CraftingSpecialBannerDuplicate,
+    CraftingSpecialBannerAddPattern,
+    CraftingSpecialShieldDecoration,
+    CraftingSpecialShulkerBoxColoring,
+    CraftingSpecialSuspiciousStew,
+    Smelting(CookingRecipe),
+    Blasting(CookingRecipe),
+    Smoking(CookingRecipe),
+    CampfireCooking(CookingRecipe),
+    Stonecutting(StoneCuttingRecipe),
+}
+
+#[derive(Clone, Debug, McBufReadable, McBufWritable)]
 pub struct Ingredient {
     pub allowed: Vec<Slot>,
 }
@@ -56,13 +107,13 @@ impl McBufReadable for Recipe {
             let ingredients = Vec::<Ingredient>::read_into(buf).await?;
             let result = Slot::read_into(buf).await?;
 
-            RecipeData::CraftingShapeless {
+            RecipeData::CraftingShapeless(ShapelessRecipe {
                 group,
                 ingredients,
                 result,
-            }
+            })
         } else {
-            panic!();
+            panic!("Unknown recipe type sent by server: {}", recipe_type);
         };
 
         let recipe = Recipe { identifier, data };
@@ -70,21 +121,3 @@ impl McBufReadable for Recipe {
         Ok(recipe)
     }
 }
-
-impl McBufWritable for Ingredient {
-    fn write_into(&self, buf: &mut Vec<u8>) -> Result<(), std::io::Error> {
-        todo!()
-    }
-}
-#[async_trait]
-impl McBufReadable for Ingredient {
-    async fn read_into<R>(buf: &mut R) -> Result<Self, String>
-    where
-        R: AsyncRead + std::marker::Unpin + std::marker::Send,
-    {
-        let ingredient = Ingredient {
-            allowed: Vec::<Slot>::read_into(buf).await?,
-        };
-        Ok(ingredient)
-    }
-}

bot/src/main.rs

@@ -7,6 +7,7 @@ async fn main() {
     // let response = azalea_client::ping::ping_server(&address.try_into().unwrap())
     //     .await
     //     .unwrap();
+
     // println!("{}", response.description.to_ansi(None));
     let _response = azalea_client::connect::join_server(&address.try_into().unwrap())
         .await