From b213fb51398e20159fc155c6fe07e710117ea5f7 Mon Sep 17 00:00:00 2001
From: chris <github@onechris.mozmail.com>
Date: Sun, 14 Jul 2024 22:09:55 +0200
Subject: [PATCH] Feature: API to switch items in the offhand/mainhand (#4819)

---
 .../java/org/geysermc/geyser/api/entity/EntityData.java     | 6 ++++++
 .../java/org/geysermc/geyser/entity/GeyserEntityData.java   | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/api/src/main/java/org/geysermc/geyser/api/entity/EntityData.java b/api/src/main/java/org/geysermc/geyser/api/entity/EntityData.java
index 90b3fc821..48c717089 100644
--- a/api/src/main/java/org/geysermc/geyser/api/entity/EntityData.java
+++ b/api/src/main/java/org/geysermc/geyser/api/entity/EntityData.java
@@ -81,4 +81,10 @@ public interface EntityData {
      * @return whether the movement is locked
      */
     boolean isMovementLocked();
+
+    /**
+     * Sends a request to the Java server to switch the items in the main and offhand.
+     * There is no guarantee of the server accepting the request.
+     */
+    void switchHands();
 }
diff --git a/core/src/main/java/org/geysermc/geyser/entity/GeyserEntityData.java b/core/src/main/java/org/geysermc/geyser/entity/GeyserEntityData.java
index c9ef7a2dd..6f8f2525f 100644
--- a/core/src/main/java/org/geysermc/geyser/entity/GeyserEntityData.java
+++ b/core/src/main/java/org/geysermc/geyser/entity/GeyserEntityData.java
@@ -96,4 +96,9 @@ public class GeyserEntityData implements EntityData {
     public boolean isMovementLocked() {
         return !movementLockOwners.isEmpty();
     }
+
+    @Override
+    public void switchHands() {
+        session.requestOffhandSwap();
+    }
 }