From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MrHua269 <wangxyper@163.com>
Date: Sun, 12 Jan 2025 15:35:15 +0800
Subject: [PATCH] Gale: Skip entity move if movement is zero

Co-authored by: Martijn Muijsers <martijnmuijsers@live.nl>
ishland <ishlandmc@yeah.net>
As part of: Gale (https://github.com/GaleMC/Gale/blob/276e903b2688f23b19bdc8d493c0bf87656d2400/patches/server/0103-Skip-entity-move-if-movement-is-zero.patch)
VMP (https://github.com/RelativityMC/VMP-fabric)
Licensed under: MIT (https://opensource.org/licenses/MIT)

diff --git a/net/minecraft/world/entity/Entity.java b/net/minecraft/world/entity/Entity.java
index 9d945f615187f86913be8a9b83b1aada3a1336b6..06496237f947af4849cb7f364eacf11d53736e3d 100644
--- a/net/minecraft/world/entity/Entity.java
+++ b/net/minecraft/world/entity/Entity.java
@@ -1081,7 +1081,14 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     private double moveStartZ;
     // Paper end - detailed watchdog information
 
+    private boolean boundingBoxChanged = false; // Gale - VMP - skip entity move if movement is zero
+
     public void move(MoverType type, Vec3 movement) {
+        // Gale start - VMP - skip entity move if movement is zero
+        if (!this.boundingBoxChanged && movement.equals(Vec3.ZERO)) {
+            return;
+        }
+        // Gale end - VMP - skip entity move if movement is zero
         final Vec3 originalMovement = movement; // Paper - Expose pre-collision velocity
         // Paper start - detailed watchdog information
         ca.spottedleaf.moonrise.common.util.TickThread.ensureTickThread("Cannot move an entity off-main");
@@ -5048,6 +5055,11 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     public final void setBoundingBox(AABB bb) {
+        // Gale start - VMP - skip entity move if movement is zero
+        if (!this.bb.equals(bb)) {
+            this.boundingBoxChanged = true;
+        }
+        // Gale end - VMP - skip entity move if movement is zero
         // CraftBukkit start - block invalid bounding boxes
         double minX = bb.minX,
                 minY = bb.minY,