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-rw-r--r--patches/server/0963-Array-backed-synched-entity-data.patch56
1 files changed, 56 insertions, 0 deletions
diff --git a/patches/server/0963-Array-backed-synched-entity-data.patch b/patches/server/0963-Array-backed-synched-entity-data.patch
new file mode 100644
index 0000000000..84bf2095b4
--- /dev/null
+++ b/patches/server/0963-Array-backed-synched-entity-data.patch
@@ -0,0 +1,56 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: jellysquid3 <[email protected]>
+Date: Sat, 8 Jul 2023 21:38:05 +0200
+Subject: [PATCH] Array backed synched entity data
+
+Original code by jellysquid3 in Lithium, licensed under the GNU Lesser General Public License v3.0 (https://www.gnu.org/licenses/lgpl-3.0.html)
+
+diff --git a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
+index ccb7d92b6c36b6225a2e640f8cea6c0da37464c8..a043c382c37058032548a5192e17f5f816abe5a6 100644
+--- a/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
++++ b/src/main/java/net/minecraft/network/syncher/SynchedEntityData.java
+@@ -34,6 +34,11 @@ public class SynchedEntityData {
+ private final Int2ObjectMap<SynchedEntityData.DataItem<?>> itemsById = new Int2ObjectOpenHashMap();
+ // private final ReadWriteLock lock = new ReentrantReadWriteLock(); // Spigot - not required
+ private boolean isDirty;
++ // Paper start - array backed synched entity data
++ private static final int DEFAULT_ENTRY_COUNT = 10;
++ private static final int GROW_FACTOR = 8;
++ private SynchedEntityData.DataItem<?>[] itemsArray = new SynchedEntityData.DataItem<?>[DEFAULT_ENTRY_COUNT];
++ // Paper end
+
+ public SynchedEntityData(Entity trackedEntity) {
+ this.entity = trackedEntity;
+@@ -103,6 +108,15 @@ public class SynchedEntityData {
+ // this.lock.writeLock().lock(); // Spigot - not required
+ this.itemsById.put(key.getId(), datawatcher_item);
+ // this.lock.writeLock().unlock(); // Spigot - not required
++ // Paper start - array backed synched entity data
++ if (this.itemsArray.length <= key.getId()) {
++ final int newSize = Math.min(key.getId() + GROW_FACTOR, MAX_ID_VALUE);
++
++ this.itemsArray = java.util.Arrays.copyOf(this.itemsArray, newSize);
++ }
++
++ this.itemsArray[key.getId()] = datawatcher_item;
++ // Paper end
+ }
+
+ public <T> boolean hasItem(EntityDataAccessor<T> key) {
+@@ -130,7 +144,15 @@ public class SynchedEntityData {
+
+ return datawatcher_item;
+ */
+- return (SynchedEntityData.DataItem) this.itemsById.get(key.getId());
++ // Paper start - array backed synched entity data
++ final int id = key.getId();
++
++ if (id < 0 || id >= this.itemsArray.length) {
++ return null;
++ }
++
++ return (DataItem<T>) this.itemsArray[id];
++ // Paper end
+ // Spigot end
+ }
+