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8c5b837e05
Firstly, the old methods all routed to the CompletableFuture method. However, the CF method could not guarantee that if the caller was off-main that the future would be "completed" on-main. Since the callback methods used the CF one, this meant that the callback methods did not guarantee that the callbacks were to be called on the main thread. Now, all methods route to getChunkAtAsync(x, z, gen, urgent, cb) so that the methods with the callback are guaranteed to invoke the callback on the main thread. The CF behavior remains unchanged; it may still appear to complete on main if invoked off-main. Secondly, remove the scheduleOnMain invocation in the async chunk completion. This unnecessarily delays the callback by 1 tick. Thirdly, add getChunksAtAsync(minX, minZ, maxX, maxZ, ...) which will load chunks within an area. This method is provided as a helper as keeping all chunks loaded within an area can be complicated to implement for plugins (due to the lacking ticket API), and is already implemented internally anyways. Fourthly, remove the ticket addition that occured with getChunkAt and getChunkAtAsync. The ticket addition may delay the unloading of the chunk unnecessarily. It also fixes a very rare timing bug where the future/callback would be completed after the chunk unloads.
39 lines
2.7 KiB
Diff
39 lines
2.7 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 407f5db0a4b3884440bc49bf4f00d9c035899e86..44cc12a3338b5f0448c88192c8674cd36531db34 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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@@ -71,6 +71,7 @@ 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 - Reset placed block on exception
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// CraftBukkit end
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if (iblockdata == null) {
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@@ -86,8 +87,20 @@ 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 placed block on exception
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+ try {
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this.updateCustomBlockEntityTag(blockposition, world, entityhuman, itemstack, iblockdata1);
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BlockItem.updateBlockEntityComponents(world, blockposition, itemstack);
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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 - Reset placed block on exception
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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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