From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martijn Muijsers <martijnmuijsers@live.nl>
Date: Wed, 30 Nov 2022 14:25:58 +0100
Subject: [PATCH] Skip entity move if movement is zero

License: MIT (https://opensource.org/licenses/MIT)
Gale - https://galemc.org

This patch is based on the following mixin:
"com/ishland/vmp/mixins/entity/move_zero_velocity/MixinEntity.java"
By: ishland <ishlandmc@yeah.net>
As part of: VMP (https://github.com/RelativityMC/VMP-fabric)
Licensed under: MIT (https://opensource.org/licenses/MIT)

diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 0419c25e47f04cfdb180588178d963d5d20616e6..2933f84e416228303d269aec13f7e649effa7a79 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -324,6 +324,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     public float yRotO;
     public float xRotO;
     private AABB bb;
+    private boolean boundingBoxChanged = false; // Gale - VMP - skip entity move if movement is zero
     public boolean onGround;
     public boolean horizontalCollision;
     public boolean verticalCollision;
@@ -1065,6 +1066,11 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     public void move(MoverType movementType, 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
         if (this.noPhysics) {
             this.setPos(this.getX() + movement.x, this.getY() + movement.y, this.getZ() + movement.z);
@@ -3970,6 +3976,11 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     public final void setBoundingBox(AABB boundingBox) {
+        // Gale start - VMP - skip entity move if movement is zero
+        if (!this.bb.equals(boundingBox)) {
+            this.boundingBoxChanged = true;
+        }
+        // Gale end - VMP - skip entity move if movement is zero
         // CraftBukkit start - block invalid bounding boxes
         double minX = boundingBox.minX,
                 minY = boundingBox.minY,