Fix: Place block on correct side

pumpkin-world/src/block/mod.rs

@@ -1,5 +1,7 @@
 use num_derive::FromPrimitive;
 
+use crate::vector3::Vector3;
+
 pub mod block_registry;
 
 #[derive(FromPrimitive)]
@@ -11,3 +13,17 @@ pub enum BlockFace {
     West,
     East,
 }
+
+impl BlockFace {
+    pub fn to_offset(&self) -> Vector3<i32> {
+        match self {
+            BlockFace::Bottom => (0, -1, 0),
+            BlockFace::East => (1, 0, 0),
+            BlockFace::North => (0, 0, -1),
+            BlockFace::South => (0, 0, 1),
+            BlockFace::Top => (0, 1, 0),
+            BlockFace::West => (-1, 0, 0),
+        }
+        .into()
+    }
+}

pumpkin/src/client/player_packet.rs

@@ -4,14 +4,14 @@ use pumpkin_protocol::{
     client::play::{
         Animation, CBlockUpdate, CEntityAnimation, CEntityVelocity, CHeadRot, CHurtAnimation,
         CSystemChatMessge, CUpdateEntityPos, CUpdateEntityPosRot, CUpdateEntityRot,
-    },
+    }, position::WorldPosition, server::play::{
-    server::play::{
         Action, SChatCommand, SChatMessage, SClientInformationPlay, SConfirmTeleport, SInteract,
         SPlayerAction, SPlayerCommand, SPlayerPosition, SPlayerPositionRotation, SPlayerRotation,
         SSetHeldItem, SSwingArm, SUseItemOn,
-    },
+    }
 };
 use pumpkin_text::TextComponent;
+use pumpkin_world::block::BlockFace;
 
 use crate::{
     commands::{handle_command, CommandSender},
@@ -317,7 +317,8 @@ impl Client {
 
     pub fn handle_use_item_on(&mut self, server: &mut Server, use_item_on: SUseItemOn) {
         let mut location = use_item_on.location;
-        location.y += 2;
+        let face = BlockFace::from_i32(use_item_on.face.0).unwrap();
+        let location = WorldPosition(location.0 + face.to_offset());
         server.broadcast_packet(self, &CBlockUpdate::new(location, 11.into()));
     }