From b13fe32f767ea906f0601a940804a88da45e7353 Mon Sep 17 00:00:00 2001
From: Ryan <ryanj00a@gmail.com>
Date: Mon, 19 Sep 2022 21:03:39 -0700
Subject: [PATCH] Only set center chunk when crossing chunk borders, not
 sections

---
 src/chunk_pos.rs |  2 +-
 src/client.rs    | 19 +++++++------------
 2 files changed, 8 insertions(+), 13 deletions(-)

diff --git a/src/chunk_pos.rs b/src/chunk_pos.rs
index 8926d9e..38f8db0 100644
--- a/src/chunk_pos.rs
+++ b/src/chunk_pos.rs
@@ -15,7 +15,7 @@ impl ChunkPos {
         Self { x, z }
     }
 
-    /// Takes an absolute position and returns the chunk position
+    /// Takes an X and Z position in world space and returns the chunk position
     /// containing the point.
     pub fn at(x: f64, z: f64) -> Self {
         Self::new((x / 16.0).floor() as i32, (z / 16.0).floor() as i32)
diff --git a/src/client.rs b/src/client.rs
index 6062905..b81b55f 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -1224,18 +1224,13 @@ impl<C: Config> Client<C> {
 
         let center = ChunkPos::at(self.position.x, self.position.z);
 
-        // Send the update view position packet if the client changes the chunk section
-        // they're in.
-        {
-            let old_section = self.old_position.map(|n| (n / 16.0).floor() as i32);
-            let new_section = self.position.map(|n| (n / 16.0).floor() as i32);
-
-            if old_section != new_section {
-                self.send_packet(SetCenterChunk {
-                    chunk_x: VarInt(new_section.x),
-                    chunk_z: VarInt(new_section.z),
-                })
-            }
+        // Send the update view position packet if the client changes the chunk they're
+        // in.
+        if ChunkPos::at(self.old_position.x, self.old_position.z) != center {
+            self.send_packet(SetCenterChunk {
+                chunk_x: VarInt(center.x),
+                chunk_z: VarInt(center.z),
+            });
         }
 
         let dimension = shared.dimension(world.meta.dimension());