From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: MrPowerGamerBR <git@mrpowergamerbr.com>
Date: Fri, 17 Nov 2023 14:22:41 -0300
Subject: [PATCH] Skip "MapItem#update()" if the map does not have the
 CraftMapRenderer present

Optimizes "image in map" maps, without requiring the map to be locked, which some old map plugins may not do

This has the disadvantage that the vanilla map data will never be updated while the CraftMapRenderer is not present, but that's not a huuuge problem for us

diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
index ce461b1a8d7fab87ae28e30205f6fab67f1808b6..7891187eb974c3fb5ebe831ab01db6ab4c5be3bf 100644
--- a/src/main/java/net/minecraft/world/item/MapItem.java
+++ b/src/main/java/net/minecraft/world/item/MapItem.java
@@ -276,7 +276,7 @@ public class MapItem extends ComplexItem {
                     mapItemSavedData.tickCarriedBy(player, stack);
                 }
 
-                if (!mapItemSavedData.locked && (selected || entity instanceof Player && ((Player)entity).getOffhandItem() == stack)) {
+                if (!mapItemSavedData.locked && (!world.sparklyPaperConfig.getSkipMapItemDataUpdatesIfMapDoesNotHaveCraftMapRenderer() || mapItemSavedData.mapView.getRenderers().stream().anyMatch(mapRenderer -> mapRenderer.getClass() == org.bukkit.craftbukkit.map.CraftMapRenderer.class)) && (selected || entity instanceof Player && ((Player)entity).getOffhandItem() == stack)) { // SparklyPaper - don't update maps if they don't have the CraftMapRenderer in the render list
                     this.update(world, entity, mapItemSavedData);
                 }
             }