Paper/patches/server/0897-Do-crystal-portal-proximity-check-before-entity-look.patch
Nassim Jahnke 6e71f41536
Updated Upstream (CraftBukkit/Spigot)
Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

CraftBukkit Changes:
65247583f SPIGOT-7857: Improve ItemMeta block data deserialization
05d80500d SPIGOT-7857: Fix spurious internal NBT tag when deserializing BlockStateMeta
cebb58e9a SPIGOT-7804: Fix written book serialization
efcdd5d38 SPIGOT-7794: Cancelling InventoryItemMoveEvent destroys items
b568ba572 SPIGOT-7789: Fix NPE in CraftMetaFirework applyToItem
f057cf449 Remove outdated build delay

Spigot Changes:
f6a48054 SPIGOT-7835: Fix issue with custom hopper settings
bb63b137 Rebuild patches
e1142b4d Rebuild patches
2024-08-24 11:23:57 +02:00

76 lines
4.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Martijn Muijsers <martijnmuijsers@live.nl>
Date: Tue, 15 Aug 2023 21:04:55 +0200
Subject: [PATCH] Do crystal-portal proximity check before entity lookup
This adds a very cheap distance check when an end crystal is placed.
Attempting to respawn the dragon, which involves looking up the end crystal
entities near the portal, every time an end crystal is placed, can be slow on
some servers that have players placing end crystals as a style of combat.
The very cheap distance check prevents running the entity lookup every time.
diff --git a/src/main/java/net/minecraft/world/item/EndCrystalItem.java b/src/main/java/net/minecraft/world/item/EndCrystalItem.java
index 273bb38f14b8af08d123e02742d365fb5d91cdf5..5f51e64cb0611a4ba6bdcdcacbcba1063a7f3a5c 100644
--- a/src/main/java/net/minecraft/world/item/EndCrystalItem.java
+++ b/src/main/java/net/minecraft/world/item/EndCrystalItem.java
@@ -30,7 +30,7 @@ public class EndCrystalItem extends Item {
if (!iblockdata.is(Blocks.OBSIDIAN) && !iblockdata.is(Blocks.BEDROCK)) {
return InteractionResult.FAIL;
} else {
- BlockPos blockposition1 = blockposition.above();
+ BlockPos blockposition1 = blockposition.above(); final BlockPos aboveBlockPosition = blockposition1; // Paper - OBFHELPER
if (!world.isEmptyBlock(blockposition1)) {
return InteractionResult.FAIL;
@@ -58,7 +58,7 @@ public class EndCrystalItem extends Item {
EndDragonFight enderdragonbattle = ((ServerLevel) world).getDragonFight();
if (enderdragonbattle != null) {
- enderdragonbattle.tryRespawn();
+ enderdragonbattle.tryRespawn(aboveBlockPosition); // Paper - Perf: Do crystal-portal proximity check before entity lookup
}
}
diff --git a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
index 6b59c4b5906c0fb4fdbc674452c6ff3df42b099b..18a1b4325cac81b040596071dab99ef9bf6f3142 100644
--- a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
+++ b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
@@ -558,6 +558,12 @@ public class EndDragonFight {
}
public boolean tryRespawn() { // CraftBukkit - return boolean
+ // Paper start - Perf: Do crystal-portal proximity check before entity lookup
+ return this.tryRespawn(null);
+ }
+
+ public boolean tryRespawn(@Nullable BlockPos placedEndCrystalPos) { // placedEndCrystalPos is null if the tryRespawn() call was not caused by a placed end crystal
+ // Paper end - Perf: Do crystal-portal proximity check before entity lookup
if (this.dragonKilled && this.respawnStage == null) {
BlockPos blockposition = this.portalLocation;
@@ -575,6 +581,22 @@ public class EndDragonFight {
blockposition = this.portalLocation;
}
+ // Paper start - Perf: Do crystal-portal proximity check before entity lookup
+ if (placedEndCrystalPos != null) {
+ // The end crystal must be 0 or 1 higher than the portal origin
+ int dy = placedEndCrystalPos.getY() - blockposition.getY();
+ if (dy != 0 && dy != 1) {
+ return false;
+ }
+ // The end crystal must be within a distance of 1 in one planar direction, and 3 in the other
+ int dx = placedEndCrystalPos.getX() - blockposition.getX();
+ int dz = placedEndCrystalPos.getZ() - blockposition.getZ();
+ if (!((dx >= -1 && dx <= 1 && dz >= -3 && dz <= 3) || (dx >= -3 && dx <= 3 && dz >= -1 && dz <= 1))) {
+ return false;
+ }
+ }
+ // Paper end - Perf: Do crystal-portal proximity check before entity lookup
+
List<EndCrystal> list = Lists.newArrayList();
BlockPos blockposition1 = blockposition.above(1);
Iterator iterator = Direction.Plane.HORIZONTAL.iterator();