PaperMC/Spigot-Server-Patches/0428-Fix-items-vanishing-through-end-portal.patch
JellySquid d454bbd5e1
Implement JellySquid's Entity Collision optimisations patch
This patch replaces the vanilla collision code for both block and entity collisions with faster implementations by JellySquid, used originally in her Lithium mod.

Optimizes Full Block voxel collisions, and removes streams from Entity collisions

Original code by JellySquid, licensed under GNU Lesser General Public License v3.0
you can find the original code on https://github.com/jellysquid3/lithium-fabric/tree/1.15.x/fabric (Yarn mappings)

Ported by
Co-authored-by: Zoutelande <54509836+Zoutelande@users.noreply.github.com>

Touched up by Aikar to keep previous paper optimizations
2020-05-09 19:19:18 -04:00

30 lines
1.8 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: AJMFactsheets <AJMFactsheets@gmail.com>
Date: Wed, 22 Jan 2020 19:52:28 -0600
Subject: [PATCH] Fix items vanishing through end portal
If the Paper configuration option "keep-spawn-loaded" is set to false,
items entering the overworld from the end will spawn at Y = 0.
This is due to logic in the getHighestBlockYAt method in World.java
only searching the heightmap if the chunk is loaded.
Quickly loading the exact world spawn chunk before searching the
heightmap resolves the issue without having to load all spawn chunks.
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index a1245c1f551cbce84b0f3dd3a7349e8585631a82..83e0af493c0f4037ff3e625ee93b9422863f335f 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -2613,6 +2613,11 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
if (blockposition == null) { // CraftBukkit
if (dimensionmanager1.getType() == DimensionManager.THE_END && dimensionmanager == DimensionManager.OVERWORLD) { // CraftBukkit
+ // Paper start - Ensure spawn chunk is always loaded before calculating Y coordinate
+ if (!worldserver1.isLoaded(worldserver1.getSpawn())) {
+ worldserver1.getChunkAtWorldCoords(worldserver1.getSpawn());
+ }
+ // Paper end
// CraftBukkit start
EntityPortalEvent event = CraftEventFactory.callEntityPortalEvent(this, worldserver1, worldserver1.getHighestBlockYAt(HeightMap.Type.MOTION_BLOCKING_NO_LEAVES, worldserver1.getSpawn()), 0);
if (event == null) {