From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Yive <admin@yive.me>
Date: Wed, 26 May 2021 15:09:33 -0700
Subject: [PATCH] Limit item frame cursors on maps


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 17e3a9dd06d652d95ccaad1767c134831ae19c11..83e56dba01998b2b83405fc831ec80d7054bc158 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -852,4 +852,9 @@ public class PaperWorldConfig {
     private void allowUsingSignsInsideSpawnProtection() {
         allowUsingSignsInsideSpawnProtection = getBoolean("allow-using-signs-inside-spawn-protection", allowUsingSignsInsideSpawnProtection);
     }
+
+    public int mapItemFrameCursorLimit = 128;
+    private void mapItemFrameCursorLimit() {
+        mapItemFrameCursorLimit = getInt("map-item-frame-cursor-limit", mapItemFrameCursorLimit);
+    }
 }
diff --git a/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java b/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
index 4acbcafc158cf11af51d9518ba5b83aaa75f52a1..6a78374b6ab3198571df7e17023d371667ebb24b 100644
--- a/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
+++ b/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
@@ -295,8 +295,12 @@ public class MapItemSavedData extends SavedData {
 
             MapFrame worldmapframe1 = new MapFrame(blockposition, entityitemframe.getDirection().get2DDataValue() * 90, entityitemframe.getId());
 
+            // Paper start
+            if (this.decorations.size() < player.level.paperConfig.mapItemFrameCursorLimit) {
             this.addDecoration(MapDecoration.Type.FRAME, player.level, "frame-" + entityitemframe.getId(), (double) blockposition.getX(), (double) blockposition.getZ(), (double) (entityitemframe.getDirection().get2DDataValue() * 90), (Component) null);
             this.frameMarkers.put(worldmapframe1.getId(), worldmapframe1);
+            }
+            // Paper end
         }
 
         CompoundTag nbttagcompound = stack.getTag();