1 files changed, 28 insertions, 2 deletions
diff --git a/azalea-core/src/slot.rs b/azalea-core/src/slot.rs
index 5e42f558..6e622872 100644
--- a/azalea-core/src/slot.rs
+++ b/azalea-core/src/slot.rs
@@ -1,14 +1,40 @@
 // TODO: have an azalea-inventory or azalea-container crate and put this there
 
+use azalea_buf::{McBuf, McBufReadable, McBufWritable};
+use std::io::{Read, Write};
+
 #[derive(Debug, Clone)]
 pub enum Slot {
-    Present(SlotData),
     Empty,
+    Present(SlotData),
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, McBuf)]
 pub struct SlotData {
+    #[var]
     pub id: i32,
     pub count: u8,
     pub nbt: azalea_nbt::Tag,
 }
+
+impl McBufReadable for Slot {
+    fn read_into(buf: &mut impl Read) -> Result<Self, String> {
+        let present = bool::read_into(buf)?;
+        if !present {
+            return Ok(Slot::Empty);
+        }
+        let slot = SlotData::read_into(buf)?;
+        Ok(Slot::Present(slot))
+    }
+}
+
+impl McBufWritable for Slot {
+    fn write_into(&self, buf: &mut impl Write) -> Result<(), std::io::Error> {
+        match self {
+            Slot::Empty => 0u8.write_into(buf)?,
+            Slot::Present(i) => i.write_into(buf)?,
+        }
+
+        Ok(())
+    }
+}