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01a13871de
Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
32 lines
1.9 KiB
Diff
32 lines
1.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Shane Freeder <theboyetronic@gmail.com>
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Date: Sun, 1 Aug 2021 09:49:06 +0100
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Subject: [PATCH] Fix incosistency issue with empty map items in CB
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diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
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index d407cf849a31a7a77fda07aa687ebb254f43d6ab..45a7e01288f780cf8a812d8e0ae12c4fb79d79e1 100644
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--- a/src/main/java/net/minecraft/world/item/MapItem.java
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+++ b/src/main/java/net/minecraft/world/item/MapItem.java
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@@ -71,7 +71,7 @@ public class MapItem extends ComplexItem {
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public static Integer getMapId(ItemStack stack) {
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CompoundTag nbttagcompound = stack.getTag();
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- return nbttagcompound != null && nbttagcompound.contains("map", 99) ? nbttagcompound.getInt("map") : -1; // CraftBukkit - make new maps for no tag
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+ return nbttagcompound != null && nbttagcompound.contains("map", 99) ? nbttagcompound.getInt("map") : null; // CraftBukkit - make new maps for no tag // Paper - don't return invalid ID
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}
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public static int createNewSavedData(Level world, int x, int z, int scale, boolean showIcons, boolean unlimitedTracking, ResourceKey<Level> dimension) {
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diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
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index 6f16f12b4cb9b53878416f1cea532548c418f518..e802623e2ef5fb8c423429335ee7dbabc45a1b74 100644
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--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
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+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
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@@ -138,6 +138,7 @@ class CraftMetaMap extends CraftMetaItem implements MapMeta {
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@Override
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public int getMapId() {
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+ Preconditions.checkState(this.hasMapView(), "Item does not have map associated - check hasMapView() first!"); // Paper - more friendly message
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return this.mapId;
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}
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