29 lines
1.5 KiB
Diff
29 lines
1.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: AJMFactsheets <AJMFactsheets@gmail.com>
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Date: Wed, 22 Jan 2020 19:52:28 -0600
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Subject: [PATCH] Fix items vanishing through end portal
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If the Paper configuration option "keep-spawn-loaded" is set to false,
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items entering the overworld from the end will spawn at Y = 0.
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This is due to logic in the getHighestBlockYAt method in World.java
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only searching the heightmap if the chunk is loaded.
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Quickly loading the exact world spawn chunk before searching the
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heightmap resolves the issue without having to load all spawn chunks.
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diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
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index 2b0b8d975504850894cd25dc907eb522b4e9830f..c7d8dcb1d0678f7ea75f7447ba94a7af9cb8ec31 100644
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--- a/src/main/java/net/minecraft/server/Entity.java
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+++ b/src/main/java/net/minecraft/server/Entity.java
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@@ -2641,6 +2641,9 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
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BlockPosition blockposition1;
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if (flag1) {
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+ // Paper start - Ensure spawn chunk is always loaded before calculating Y coordinate
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+ this.world.getChunkAtWorldCoords(this.world.getSpawn());
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+ // Paper end
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blockposition1 = WorldServer.a;
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} else {
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blockposition1 = worldserver.getHighestBlockYAt(HeightMap.Type.MOTION_BLOCKING_NO_LEAVES, worldserver.getSpawn());
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