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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Mon, 10 Sep 2018 23:36:16 -0400
Subject: [PATCH] Prevent chunk loading from Fluid Flowing
diff --git a/src/main/java/net/minecraft/world/level/material/FlowingFluid.java b/src/main/java/net/minecraft/world/level/material/FlowingFluid.java
index 818c83934a97c4b2ad4db69f4b0fcf0a500ea918..0aeb9faa1ce22359361741a591aa3d465d955970 100644
--- a/src/main/java/net/minecraft/world/level/material/FlowingFluid.java
+++ b/src/main/java/net/minecraft/world/level/material/FlowingFluid.java
@@ -176,7 +176,8 @@ public abstract class FlowingFluid extends Fluid {
Direction enumdirection = (Direction) entry.getKey();
FluidState fluid1 = (FluidState) entry.getValue();
BlockPos blockposition1 = pos.relative(enumdirection);
- BlockState iblockdata1 = world.getBlockState(blockposition1);
+ BlockState iblockdata1 = world.getBlockStateIfLoaded(blockposition1); // Paper - Prevent chunk loading from fluid flowing
+ if (iblockdata1 == null) continue; // Paper - Prevent chunk loading from fluid flowing
if (this.canSpreadTo(world, pos, blockState, enumdirection, blockposition1, iblockdata1, world.getFluidState(blockposition1), fluid1.getType())) {
// CraftBukkit start
@@ -203,7 +204,8 @@ public abstract class FlowingFluid extends Fluid {
while (iterator.hasNext()) {
Direction enumdirection = (Direction) iterator.next();
BlockPos blockposition1 = pos.relative(enumdirection);
- BlockState iblockdata1 = world.getBlockState(blockposition1);
+ BlockState iblockdata1 = world.getBlockStateIfLoaded(blockposition1); // Paper - Prevent chunk loading from fluid flowing
+ if (iblockdata1 == null) continue; // Paper - Prevent chunk loading from fluid flowing
FluidState fluid = iblockdata1.getFluidState();
if (fluid.getType().isSame(this) && this.canPassThroughWall(enumdirection, world, pos, state, blockposition1, iblockdata1)) {
@@ -320,11 +322,18 @@ public abstract class FlowingFluid extends Fluid {
if (enumdirection1 != direction) {
BlockPos blockposition2 = pos.relative(enumdirection1);
short short0 = FlowingFluid.getCacheKey(fromPos, blockposition2);
- Pair<BlockState, FluidState> pair = (Pair) stateCache.computeIfAbsent(short0, (short1) -> {
- BlockState iblockdata1 = world.getBlockState(blockposition2);
+ // Paper start - Prevent chunk loading from fluid flowing
+ Pair<BlockState, FluidState> pair = stateCache.get(short0);
+ if (pair == null) {
+ BlockState iblockdatax = world.getBlockStateIfLoaded(blockposition2);
+ if (iblockdatax == null) {
+ continue;
+ }
- return Pair.of(iblockdata1, iblockdata1.getFluidState());
- });
+ pair = Pair.of(iblockdatax, iblockdatax.getFluidState());
+ stateCache.put(short0, pair);
+ }
+ // Paper end - Prevent chunk loading from fluid flowing
BlockState iblockdata1 = (BlockState) pair.getFirst();
FluidState fluid = (FluidState) pair.getSecond();
@@ -396,11 +405,16 @@ public abstract class FlowingFluid extends Fluid {
Direction enumdirection = (Direction) iterator.next();
BlockPos blockposition1 = pos.relative(enumdirection);
short short0 = FlowingFluid.getCacheKey(pos, blockposition1);
- Pair<BlockState, FluidState> pair = (Pair) short2objectmap.computeIfAbsent(short0, (short1) -> {
- BlockState iblockdata1 = world.getBlockState(blockposition1);
-
- return Pair.of(iblockdata1, iblockdata1.getFluidState());
- });
+ // Paper start - Prevent chunk loading from fluid flowing
+ Pair pair = (Pair) short2objectmap.get(short0);
+ if (pair == null) {
+ BlockState iblockdatax = world.getBlockStateIfLoaded(blockposition1);
+ if (iblockdatax == null) continue;
+
+ pair = Pair.of(iblockdatax, iblockdatax.getFluidState());
+ short2objectmap.put(short0, pair);
+ }
+ // Paper end - Prevent chunk loading from fluid flowing
BlockState iblockdata1 = (BlockState) pair.getFirst();
FluidState fluid = (FluidState) pair.getSecond();
FluidState fluid1 = this.getNewLiquid(world, blockposition1, iblockdata1);
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