From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: ishland <ishlandmc@yeah.net>
Date: Sun, 12 Dec 2021 17:19:00 -0500
Subject: [PATCH] vmp: skip entity move if movement is zero

Copyright (c) 2021-2022 ishland

Original code by RelativityMC, licensed under MIT
You can find the original code on https://github.com/RelativityMC/VMP-fabric (Yarn mappings)

diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 8a2429f915da389360dcb16609fef7701b4a863a..bc8cdffb58369a5c1796d3323ed1facbedf9c823 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -299,6 +299,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
     public float yRotO;
     public float xRotO;
     private AABB bb;
+    private boolean boundingBoxChanged = false; // DivineMC - vmp: skip entity move if movement is zero
     public boolean onGround;
     public boolean horizontalCollision;
     public boolean verticalCollision;
@@ -1035,6 +1036,12 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
     // Paper end - detailed watchdog information
 
     public void move(MoverType movementType, Vec3 movement) {
+        // DivineMC start - vmp: skip entity move if movement is zero
+        if (!boundingBoxChanged && movement.equals(Vec3.ZERO)) {
+            boundingBoxChanged = false;
+            return;
+        }
+        // DivineMC end
         // Paper start - detailed watchdog information
         io.papermc.paper.util.TickThread.ensureTickThread("Cannot move an entity off-main");
         synchronized (this.posLock) {
@@ -3862,6 +3869,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
     }
 
     public final void setBoundingBox(AABB boundingBox) {
+        if (!this.bb.equals(boundingBox)) boundingBoxChanged = true; // DivineMC - vmp: skip entity move if movement is zero
         // CraftBukkit start - block invalid bounding boxes
         double minX = boundingBox.minX,
                 minY = boundingBox.minY,