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53 lines
2.7 KiB
Diff
53 lines
2.7 KiB
Diff
From 7f4484487e0a74dc63b2846472038f335132d687 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Mon, 28 Mar 2016 22:03:09 -0400
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Subject: [PATCH] Prevent Waterflow BlockFromToEvent from loading chunks
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Many protection plugins would unintentionally trigger chunk loads
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by calling .getToBlock() on an unloaded chunk, killing performance.
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Simply skip the event call. as CraftBukkit blocks changing the block
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of unloaded chunks anyways.
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This keeps behavior consistent, vs inconsistent flowing based on plugin triggered loads.
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diff --git a/src/main/java/net/minecraft/server/BlockFlowing.java b/src/main/java/net/minecraft/server/BlockFlowing.java
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index 51b80cb..0a3d673 100644
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--- a/src/main/java/net/minecraft/server/BlockFlowing.java
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+++ b/src/main/java/net/minecraft/server/BlockFlowing.java
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@@ -105,6 +105,7 @@ public class BlockFlowing extends BlockFluids {
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IBlockData iblockdata2 = world.getType(blockposition.down());
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if (this.h(world, blockposition.down(), iblockdata2)) {
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+ if (!canFlowTo(world, source, BlockFace.DOWN)) { return; } // Paper
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// CraftBukkit start - Send "down" to the server
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BlockFromToEvent event = new BlockFromToEvent(source, BlockFace.DOWN);
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if (server != null) {
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@@ -142,6 +143,7 @@ public class BlockFlowing extends BlockFluids {
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EnumDirection enumdirection1 = (EnumDirection) iterator1.next();
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// CraftBukkit start
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+ if (!canFlowTo(world, source, org.bukkit.craftbukkit.block.CraftBlock.notchToBlockFace(enumdirection1))) { continue; } // Paper
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BlockFromToEvent event = new BlockFromToEvent(source, org.bukkit.craftbukkit.block.CraftBlock.notchToBlockFace(enumdirection1));
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if (server != null) {
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server.getPluginManager().callEvent(event);
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@@ -156,8 +158,14 @@ public class BlockFlowing extends BlockFluids {
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}
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+ // Paper start
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+ private boolean canFlowTo(World world, org.bukkit.block.Block source, BlockFace face) {
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+ return source.getWorld().isChunkLoaded((source.getX() + face.getModX()) >> 4, (source.getZ() + face.getModZ()) >> 4);
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+ }
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+ // Paper end
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+
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private void flow(World world, BlockPosition blockposition, IBlockData iblockdata, int i) {
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- if (world.isLoaded(blockposition) && this.h(world, blockposition, iblockdata)) { // CraftBukkit - add isLoaded check
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+ if (/*world.isLoaded(blockposition) &&*/ this.h(world, blockposition, iblockdata)) { // CraftBukkit - add isLoaded check // Paper - Already checked before we get here for isLoaded
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if (iblockdata.getBlock() != Blocks.AIR) {
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if (this.material == Material.LAVA) {
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this.fizz(world, blockposition);
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--
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2.8.0
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