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994679a0c9
Tux pointed out the patch still has O(n^2) time complexity since the sublist class in arraylist does not override clear() from AbstractList, which uses a forward moving iterator to clear the list. Resolved by using a peek and poll from ArrayDeque. This patch also removes the useless WeakHashMap which holds the list (it mapped world->list) and replaces it with a field on World.
41 lines
2.1 KiB
Diff
41 lines
2.1 KiB
Diff
From 7d73d345fb5c9ad84aa68fa7d80de4dcee6088a6 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Wed, 6 Feb 2019 00:20:33 -0500
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Subject: [PATCH] BlockDestroyEvent
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Adds an event for when the server is going to destroy a current block,
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potentially causing it to drop. This event can be cancelled to avoid
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the block destruction, such as preventing signs from popping when
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floating in the air.
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This can replace many uses of BlockPhysicsEvent
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 34d7b9314..ab56086e1 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -478,8 +478,20 @@ public abstract class World implements IIBlockAccess, GeneratorAccess, AutoClose
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return false;
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} else {
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Fluid fluid = this.getFluid(blockposition);
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+ // Paper start - while the above setAir method is named same and looks very similar
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+ // they are NOT used with same intent and the above should not fire this event. The above method is more of a BlockSetToAirEvent,
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+ // it doesn't imply destruction of a block that plays a sound effect / drops an item.
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+ boolean playEffect = true;
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+ if (com.destroystokyo.paper.event.block.BlockDestroyEvent.getHandlerList().getRegisteredListeners().length > 0) {
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+ com.destroystokyo.paper.event.block.BlockDestroyEvent event = new com.destroystokyo.paper.event.block.BlockDestroyEvent(MCUtil.toBukkitBlock(this, blockposition), fluid.getBlockData().createCraftBlockData(), flag);
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+ if (!event.callEvent()) {
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+ return false;
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+ }
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+ playEffect = event.playEffect();
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+ }
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+ // Paper end
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- this.triggerEffect(2001, blockposition, Block.getCombinedId(iblockdata));
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+ if (playEffect) this.triggerEffect(2001, blockposition, Block.getCombinedId(iblockdata)); // Paper
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if (flag) {
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TileEntity tileentity = iblockdata.getBlock().isTileEntity() ? this.getTileEntity(blockposition) : null;
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--
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2.21.0
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