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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.
39 lines
2.5 KiB
Diff
39 lines
2.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Nassim Jahnke <nassim@njahnke.dev>
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Date: Fri, 7 Jan 2022 11:45:15 +0100
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Subject: [PATCH] Reset placed block on exception
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diff --git a/src/main/java/net/minecraft/world/item/BlockItem.java b/src/main/java/net/minecraft/world/item/BlockItem.java
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index 78cac63e5bd7c84f59b8e00ee40899be78e8cdb1..00d31df5ba7e147b4b969a89cfc2b5088a988169 100644
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--- a/src/main/java/net/minecraft/world/item/BlockItem.java
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+++ b/src/main/java/net/minecraft/world/item/BlockItem.java
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@@ -78,6 +78,7 @@ public class BlockItem extends Item {
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if (this instanceof PlaceOnWaterBlockItem || this instanceof SolidBucketItem) {
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blockstate = org.bukkit.craftbukkit.block.CraftBlockStates.getBlockState(blockactioncontext1.getLevel(), blockactioncontext1.getClickedPos());
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}
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+ final org.bukkit.block.BlockState oldBlockstate = blockstate != null ? blockstate : org.bukkit.craftbukkit.block.CraftBlockStates.getBlockState(blockactioncontext1.getLevel(), blockactioncontext1.getClickedPos()); // Paper
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// CraftBukkit end
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if (iblockdata == null) {
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@@ -93,7 +94,19 @@ public class BlockItem extends Item {
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if (iblockdata1.is(iblockdata.getBlock())) {
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iblockdata1 = this.updateBlockStateFromTag(blockposition, world, itemstack, iblockdata1);
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+ // Paper start - reset block on exception
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+ try {
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this.updateCustomBlockEntityTag(blockposition, world, entityhuman, itemstack, iblockdata1);
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+ } catch (Exception e) {
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+ oldBlockstate.update(true, false);
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+ if (entityhuman instanceof ServerPlayer player) {
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+ org.apache.logging.log4j.LogManager.getLogger().error("Player {} tried placing invalid block", player.getScoreboardName(), e);
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+ player.getBukkitEntity().kickPlayer("Packet processing error");
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+ return InteractionResult.FAIL;
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+ }
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+ throw e; // Rethrow exception if not placed by a player
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+ }
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+ // Paper end
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iblockdata1.getBlock().setPlacedBy(world, blockposition, iblockdata1, entityhuman, itemstack);
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// CraftBukkit start
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if (blockstate != null) {
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