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 d72d703308de39ff769e4311e2349f5fb13e7912..8dd5ec2dd8f87fdb183ae4508c576481af3db20d 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -317,6 +317,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
     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;
@@ -1119,6 +1120,12 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
     // 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
         final Vec3 originalMovement = movement; // Paper - Expose pre-collision velocity
         // Paper start - detailed watchdog information
         io.papermc.paper.util.TickThread.ensureTickThread("Cannot move an entity off-main");
@@ -4165,6 +4172,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
     }
 
     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,