Paper/patches/server/0895-Don-t-tick-markers.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Noah van der Aa <ndvdaa@gmail.com>
Date: Fri, 7 Jan 2022 11:58:26 +0100
Subject: [PATCH] Don't tick markers

Fixes https://github.com/PaperMC/Paper/issues/7276 by not adding markers to the entity
tick list at all and ignoring them in Spigot's activation range checks. The entity tick
list is only used in the tick and tickPassenger methods, so we can safely not add the
markers to it.

diff --git a/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java b/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java
index 68f99e93ed3e843b4001a7a27620f88a48b85e67..0dc96c39151ec4dbeec3947cb17606f53a6392d4 100644
--- a/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java
+++ b/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java
@@ -103,7 +103,7 @@ public final class EntityCommand implements PaperSubcommand {
                 ChunkPos chunk = e.chunkPosition();
                 info.left++;
                 info.right.put(chunk, info.right.getOrDefault(chunk, 0) + 1);
-                if (!chunkProviderServer.isPositionTicking(e)) {
+                if (!chunkProviderServer.isPositionTicking(e) || e instanceof net.minecraft.world.entity.Marker) { // Markers aren't ticked.
                     nonEntityTicking.merge(key, 1, Integer::sum);
                 }
             });
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index c89e85c1fe37c8fba54825be76bb1caa15d84dcd..458ebb5dabd1f24ea3d49ef57eea687ce61f0fc0 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -2489,6 +2489,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
         }
 
         public void onTickingStart(Entity entity) {
+            if (entity instanceof net.minecraft.world.entity.Marker) return; // Paper - Don't tick markers
             ServerLevel.this.entityTickList.add(entity);
             ServerLevel.this.entityManager.addNavigatorsIfPathingToRegion(entity); // Paper - optimise notify
         }
diff --git a/src/main/java/org/spigotmc/ActivationRange.java b/src/main/java/org/spigotmc/ActivationRange.java
index 5bffc9a0f6ef9d54abb359565d07509b177c2b82..1a1a1f4d0ac025daccc2d3f84faf6592819f4d5c 100644
--- a/src/main/java/org/spigotmc/ActivationRange.java
+++ b/src/main/java/org/spigotmc/ActivationRange.java
@@ -211,7 +211,7 @@ public class ActivationRange
             // Paper end
 
             // Paper start
-            java.util.List<Entity> entities = world.getEntities((Entity)null, maxBB, null);
+            java.util.List<Entity> entities = world.getEntities((Entity)null, maxBB, (e) -> !(e instanceof net.minecraft.world.entity.Marker)); // Don't tick markers
             for (int i = 0; i < entities.size(); i++) {
                 Entity entity = entities.get(i);
                 ActivationRange.activateEntity(entity);