From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Samsuik <40902469+Samsuik@users.noreply.github.com>
Date: Sat, 2 Dec 2023 15:14:15 +0000
Subject: [PATCH] Add option for legacy lava block formation


diff --git a/src/main/java/net/minecraft/world/level/block/LiquidBlock.java b/src/main/java/net/minecraft/world/level/block/LiquidBlock.java
index f9ad605334971007efa5bbc122fd2d0ee40ab4c2..30fd979fb5e375cbe4bacb441d7192b9a20b4a81 100644
--- a/src/main/java/net/minecraft/world/level/block/LiquidBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/LiquidBlock.java
@@ -162,7 +162,15 @@ public class LiquidBlock extends Block implements BucketPickup {
                     if (fluidState.isSource()) {
                         block = Blocks.OBSIDIAN;
                     } else {
-                        final me.samsuik.sakura.physics.PhysicsVersion physics = world.localConfig().config(pos).physicsVersion;
+                        // Sakura start - legacy block formation
+                        final me.samsuik.sakura.physics.PhysicsVersion physics;
+
+                        if (world.sakuraConfig.legacyBlockFormation) {
+                            physics = me.samsuik.sakura.physics.PhysicsVersion.v1_12;
+                        } else {
+                            physics = world.localConfig().config(pos).physicsVersion;
+                        }
+                        // Sakura end
 
                         // SANITY: In legacy a patch by paper removes the fluid level condition from vanilla.
                         if (physics.afterOrEqual(1_16_0) || physics.isLegacy()
diff --git a/src/main/java/net/minecraft/world/level/material/LavaFluid.java b/src/main/java/net/minecraft/world/level/material/LavaFluid.java
index ed3b1225bd9e59b2eee64ac4bd03a6fa59f690e0..0f13a5ea286ed42f117dd7473365ec642b46b82d 100644
--- a/src/main/java/net/minecraft/world/level/material/LavaFluid.java
+++ b/src/main/java/net/minecraft/world/level/material/LavaFluid.java
@@ -177,7 +177,7 @@ public abstract class LavaFluid extends FlowingFluid {
     public boolean canBeReplacedWith(FluidState state, BlockGetter world, BlockPos pos, Fluid fluid, Direction direction) {
         // Sakura start
         return state.getHeight(world, pos) >= 0.44444445F && fluid.is(FluidTags.WATER)
-            && world instanceof Level level && level.localConfig().config(pos).physicsVersion.afterOrEqual(1_13_0);
+            && world instanceof Level level && !level.sakuraConfig.legacyBlockFormation && level.localConfig().config(pos).physicsVersion.afterOrEqual(1_13_0);
         // Sakura end
     }
 
diff --git a/src/main/java/net/minecraft/world/level/material/WaterFluid.java b/src/main/java/net/minecraft/world/level/material/WaterFluid.java
index 4a476a933fc2ec5aa4192a755af59f99f93c29c9..f9e9332ef573c641e071400f5c8726190b464a56 100644
--- a/src/main/java/net/minecraft/world/level/material/WaterFluid.java
+++ b/src/main/java/net/minecraft/world/level/material/WaterFluid.java
@@ -105,7 +105,7 @@ public abstract class WaterFluid extends FlowingFluid {
     public boolean canBeReplacedWith(FluidState state, BlockGetter world, BlockPos pos, Fluid fluid, Direction direction) {
         // Sakura start
         return direction == Direction.DOWN && !fluid.is(FluidTags.WATER)
-            || fluid.is(FluidTags.LAVA) && world instanceof Level level && level.localConfig().config(pos).physicsVersion.before(1_13_0);
+            || fluid.is(FluidTags.LAVA) && world instanceof Level level && (level.sakuraConfig.legacyBlockFormation || level.localConfig().config(pos).physicsVersion.before(1_13_0));
         // Sakura end
     }