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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
52 lines
2.1 KiB
Diff
52 lines
2.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Thu, 10 Jun 2021 14:36:00 -0700
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Subject: [PATCH] Optimise BlockSoil nearby water lookup
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Apparently the abstract block iteration was taking about
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75% of the method call.
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diff --git a/src/main/java/net/minecraft/world/level/block/FarmBlock.java b/src/main/java/net/minecraft/world/level/block/FarmBlock.java
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index 66106b821d7a384a2eb0f27993beb9f4257e6815..6e4c852c93f2418ea69e485ed3a10cbe3a6e3bd2 100644
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--- a/src/main/java/net/minecraft/world/level/block/FarmBlock.java
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+++ b/src/main/java/net/minecraft/world/level/block/FarmBlock.java
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@@ -151,19 +151,28 @@ public class FarmBlock extends Block {
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}
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private static boolean isNearWater(LevelReader world, BlockPos pos) {
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- Iterator iterator = BlockPos.betweenClosed(pos.offset(-4, 0, -4), pos.offset(4, 1, 4)).iterator();
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-
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- BlockPos blockposition1;
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-
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- do {
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- if (!iterator.hasNext()) {
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- return false;
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+ // Paper start - Perf: remove abstract block iteration
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+ int xOff = pos.getX();
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+ int yOff = pos.getY();
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+ int zOff = pos.getZ();
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+
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+ for (int dz = -4; dz <= 4; ++dz) {
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+ int z = dz + zOff;
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+ for (int dx = -4; dx <= 4; ++dx) {
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+ int x = xOff + dx;
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+ for (int dy = 0; dy <= 1; ++dy) {
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+ int y = dy + yOff;
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+ net.minecraft.world.level.chunk.LevelChunk chunk = (net.minecraft.world.level.chunk.LevelChunk)world.getChunk(x >> 4, z >> 4);
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+ net.minecraft.world.level.material.FluidState fluid = chunk.getBlockStateFinal(x, y, z).getFluidState();
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+ if (fluid.is(FluidTags.WATER)) {
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+ return true;
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+ }
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+ }
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}
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+ }
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- blockposition1 = (BlockPos) iterator.next();
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- } while (!world.getFluidState(blockposition1).is(FluidTags.WATER));
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-
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- return true;
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+ return false;
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+ // Paper end - Perf: remove abstract block iteration
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}
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@Override
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