From 28ea7bb56067c44a5fbab397114b96f94e360f20 Mon Sep 17 00:00:00 2001
From: Byteflux <byte@byteflux.net>
Date: Wed, 8 Aug 2018 16:33:21 -0600
Subject: [PATCH] Configurable speed for water flowing over lava

---
 .../world/level/block/LiquidBlock.java.patch  | 44 ++++++++++++++++++-
 1 file changed, 43 insertions(+), 1 deletion(-)

diff --git a/paper-server/patches/sources/net/minecraft/world/level/block/LiquidBlock.java.patch b/paper-server/patches/sources/net/minecraft/world/level/block/LiquidBlock.java.patch
index 46df5baba5..42df446a82 100644
--- a/paper-server/patches/sources/net/minecraft/world/level/block/LiquidBlock.java.patch
+++ b/paper-server/patches/sources/net/minecraft/world/level/block/LiquidBlock.java.patch
@@ -9,7 +9,49 @@
  
          if (fluidtype instanceof FlowingFluid fluidtypeflowing) {
              dataresult = DataResult.success(fluidtypeflowing);
-@@ -175,14 +175,20 @@
+@@ -141,11 +141,31 @@
+     @Override
+     protected void onPlace(BlockState state, Level world, BlockPos pos, BlockState oldState, boolean notify) {
+         if (this.shouldSpreadLiquid(world, pos, state)) {
+-            world.scheduleTick(pos, state.getFluidState().getType(), this.fluid.getTickDelay(world));
++            world.scheduleTick(pos, state.getFluidState().getType(), this.getFlowSpeed(world, pos)); // Paper - Configurable speed for water flowing over lava
+         }
+ 
+     }
+ 
++    // Paper start - Configurable speed for water flowing over lava
++    public int getFlowSpeed(Level world, BlockPos blockposition) {
++        if (net.minecraft.core.registries.BuiltInRegistries.FLUID.wrapAsHolder(this.fluid).is(FluidTags.WATER)) {
++            if (
++                isLava(world, blockposition.north(1)) ||
++                isLava(world, blockposition.south(1)) ||
++                isLava(world, blockposition.west(1)) ||
++                isLava(world, blockposition.east(1))
++            ) {
++                return world.paperConfig().environment.waterOverLavaFlowSpeed;
++            }
++        }
++        return this.fluid.getTickDelay(world);
++    }
++    private static boolean isLava(Level world, BlockPos blockPos) {
++        final FluidState fluidState = world.getFluidIfLoaded(blockPos);
++        return fluidState != null && fluidState.is(FluidTags.LAVA);
++    }
++    // Paper end - Configurable speed for water flowing over lava
++
+     @Override
+     protected BlockState updateShape(BlockState state, LevelReader world, ScheduledTickAccess tickView, BlockPos pos, Direction direction, BlockPos neighborPos, BlockState neighborState, RandomSource random) {
+         if (state.getFluidState().isSource() || neighborState.getFluidState().isSource()) {
+@@ -158,7 +178,7 @@
+     @Override
+     protected void neighborChanged(BlockState state, Level world, BlockPos pos, Block sourceBlock, @Nullable Orientation wireOrientation, boolean notify) {
+         if (this.shouldSpreadLiquid(world, pos, state)) {
+-            world.scheduleTick(pos, state.getFluidState().getType(), this.fluid.getTickDelay(world));
++            world.scheduleTick(pos, state.getFluidState().getType(), this.getFlowSpeed(world, pos)); // Paper - Configurable speed for water flowing over lava
+         }
+ 
+     }
+@@ -175,14 +195,20 @@
                  if (world.getFluidState(blockposition1).is(FluidTags.WATER)) {
                      Block block = world.getFluidState(pos).isSource() ? Blocks.OBSIDIAN : Blocks.COBBLESTONE;