From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: NONPLAYT <76615486+NONPLAYT@users.noreply.github.com>
Date: Fri, 26 Jan 2024 17:42:42 +0300
Subject: [PATCH] vmp: skip entity move if movement is zero

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 2892d3ad489f0fe2a1b11ef0eb7f8b5290f841a4..50a818fc10a717ddeaf35cb2c4455510bfd9cbad 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -323,6 +323,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     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;
@@ -1090,6 +1091,12 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     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
         final Vec3 originalMovement = movement; // Paper - Expose pre-collision velocity
         if (this.noPhysics) {
             this.setPos(this.getX() + movement.x, this.getY() + movement.y, this.getZ() + movement.z);
@@ -4045,6 +4052,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     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,