Refactor azalea-protocol (#190)

* start updating to 1.21.4

* fix block codegen and stop using block data from burger

* rename packet related modules and structs to be simpler

* ItemSlot -> ItemStack for more consistency with mojmap

* .get() -> .into_packet()

* simplify declare_state_packets by removing packet ids

* rename read_from and write_into to azalea_read and azalea_write

* rename McBufReadable and McBufWritable to AzaleaRead and AzaleaWrite

* McBuf -> AzBuf

* remove most uses of into_variant

* update codegen and use resourcelocation names for packets

* implement #[limit(i)] attribute for AzBuf derive macro

* fixes for 1.21.4

* fix examples

* update some physics code and fix ChatType

* remove unused imports in codegen

* re-add some things to migrate.py and update +mc version numbers automatically

* downgrade to 1.21.3 lol

1 files changed, 2 insertions, 6 deletions

diff --git a/azalea-core/src/delta.rs b/azalea-core/src/delta.rs
index 2dd67005..238262a2 100755
--- a/azalea-core/src/delta.rs
+++ b/azalea-core/src/delta.rs
@@ -1,4 +1,4 @@
-pub use azalea_buf::McBuf;
+pub use azalea_buf::AzBuf;
 
 use crate::position::Vec3;
 
@@ -9,7 +9,7 @@ pub trait PositionDeltaTrait {
 }
 
 /// Only works for up to 8 blocks
-#[derive(Clone, Debug, McBuf, Default)]
+#[derive(Clone, Debug, AzBuf, Default)]
 pub struct PositionDelta8 {
     pub xa: i16,
     pub ya: i16,
@@ -49,10 +49,6 @@ impl Vec3 {
         }
     }
 
-    pub fn length_squared(&self) -> f64 {
-        self.x * self.x + self.y * self.y + self.z * self.z
-    }
-
     pub fn normalize(&self) -> Vec3 {
         let length = f64::sqrt(self.x * self.x + self.y * self.y + self.z * self.z);
         if length < 1e-4 {