Paper/Spigot-Server-Patches/0097-Prevent-Waterflow-BlockFromToEvent-from-loading-chun.patch
Zach Brown 974b0afca9
Remove last bit of chunk exists region file fix
CraftBukkit removed their implementation that caused this issue,
switching to Mojang's implementation which doesn't appear to share it. I
already removed the important bit in the last upstream merge, this is
just unused and unnecessary now. So we remove it.
2017-04-29 05:27:31 -05:00

53 lines
2.7 KiB
Diff

From 58e7452d99c66366f890d624f3ee8315fe87eb8c Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 28 Mar 2016 22:03:09 -0400
Subject: [PATCH] Prevent Waterflow BlockFromToEvent from loading chunks
Many protection plugins would unintentionally trigger chunk loads
by calling .getToBlock() on an unloaded chunk, killing performance.
Simply skip the event call. as CraftBukkit blocks changing the block
of unloaded chunks anyways.
This keeps behavior consistent, vs inconsistent flowing based on plugin triggered loads.
diff --git a/src/main/java/net/minecraft/server/BlockFlowing.java b/src/main/java/net/minecraft/server/BlockFlowing.java
index 0a2823686..8eba70b01 100644
--- a/src/main/java/net/minecraft/server/BlockFlowing.java
+++ b/src/main/java/net/minecraft/server/BlockFlowing.java
@@ -96,6 +96,7 @@ public class BlockFlowing extends BlockFluids {
if (this.h(world, blockposition.down(), iblockdata2)) {
// CraftBukkit start
+ if (!canFlowTo(world, source, BlockFace.DOWN)) { return; } // Paper
BlockFromToEvent event = new BlockFromToEvent(source, BlockFace.DOWN);
world.getServer().getPluginManager().callEvent(event);
@@ -136,6 +137,7 @@ public class BlockFlowing extends BlockFluids {
EnumDirection enumdirection1 = (EnumDirection) iterator1.next();
// CraftBukkit start
+ if (!canFlowTo(world, source, org.bukkit.craftbukkit.block.CraftBlock.notchToBlockFace(enumdirection1))) { continue; } // Paper
BlockFromToEvent event = new BlockFromToEvent(source, org.bukkit.craftbukkit.block.CraftBlock.notchToBlockFace(enumdirection1));
world.getServer().getPluginManager().callEvent(event);
@@ -148,8 +150,14 @@ public class BlockFlowing extends BlockFluids {
}
+ // Paper start
+ private boolean canFlowTo(World world, org.bukkit.block.Block source, BlockFace face) {
+ return source.getWorld().isChunkLoaded((source.getX() + face.getModX()) >> 4, (source.getZ() + face.getModZ()) >> 4);
+ }
+ // Paper end
+
private void flow(World world, BlockPosition blockposition, IBlockData iblockdata, int i) {
- if (world.isLoaded(blockposition) && this.h(world, blockposition, iblockdata)) { // CraftBukkit - add isLoaded check
+ if (/*world.isLoaded(blockposition) &&*/ this.h(world, blockposition, iblockdata)) { // CraftBukkit - add isLoaded check // Paper - Already checked before we get here for isLoaded
if (iblockdata.getMaterial() != Material.AIR) {
if (this.material == Material.LAVA) {
this.fizz(world, blockposition);
--
2.12.2.windows.2