From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Thu, 20 Jul 2023 21:13:28 +0800
Subject: [PATCH] Skip entity move if movement is zero

This patch is Powered by Gale(https://github.com/GaleMC/Gale)

diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 8c89114f34a7b3807efa4f012f378bfa24b5cc6f..18a1a6211620c2f3f9d6fad022daa2d45d993f60 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; // Leaves - skip entity move if movement is zero
     public boolean onGround;
     public boolean horizontalCollision;
     public boolean verticalCollision;
@@ -1068,6 +1069,13 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     public void move(MoverType movementType, Vec3 movement) {
+        // Leaves start - skip entity move if movement is zero
+        if (org.leavesmc.leaves.LeavesConfig.skipEntityMoveIfMovementIsZero) {
+            if (!this.boundingBoxChanged && movement.equals(Vec3.ZERO)) {
+                return;
+            }
+        }
+        // Leaves end - 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);
@@ -4002,6 +4010,7 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
     }
 
     public final void setBoundingBox(AABB boundingBox) {
+        if (!this.bb.equals(boundingBox)) this.boundingBoxChanged = true; // Leaves - skip entity move if movement is zero
         // CraftBukkit start - block invalid bounding boxes
         double minX = boundingBox.minX,
                 minY = boundingBox.minY,