--- a/net/minecraft/world/level/material/LavaFluid.java
+++ b/net/minecraft/world/level/material/LavaFluid.java
@@ -25,8 +25,11 @@
 import net.minecraft.world.level.block.state.StateDefinition;
 
 public abstract class LavaFluid extends FlowingFluid {
+
     public static final float MIN_LEVEL_CUTOFF = 0.44444445F;
 
+    public LavaFluid() {}
+
     @Override
     public Fluid getFlowing() {
         return Fluids.FLOWING_LAVA;
@@ -44,18 +47,20 @@
 
     @Override
     public void animateTick(Level world, BlockPos pos, FluidState state, RandomSource random) {
-        BlockPos blockPos = pos.above();
-        if (world.getBlockState(blockPos).isAir() && !world.getBlockState(blockPos).isSolidRender(world, blockPos)) {
+        BlockPos blockposition1 = pos.above();
+
+        if (world.getBlockState(blockposition1).isAir() && !world.getBlockState(blockposition1).isSolidRender(world, blockposition1)) {
             if (random.nextInt(100) == 0) {
-                double d = (double)pos.getX() + random.nextDouble();
-                double e = (double)pos.getY() + 1.0D;
-                double f = (double)pos.getZ() + random.nextDouble();
-                world.addParticle(ParticleTypes.LAVA, d, e, f, 0.0D, 0.0D, 0.0D);
-                world.playLocalSound(d, e, f, SoundEvents.LAVA_POP, SoundSource.BLOCKS, 0.2F + random.nextFloat() * 0.2F, 0.9F + random.nextFloat() * 0.15F, false);
+                double d0 = (double) pos.getX() + random.nextDouble();
+                double d1 = (double) pos.getY() + 1.0D;
+                double d2 = (double) pos.getZ() + random.nextDouble();
+
+                world.addParticle(ParticleTypes.LAVA, d0, d1, d2, 0.0D, 0.0D, 0.0D);
+                world.playLocalSound(d0, d1, d2, SoundEvents.LAVA_POP, SoundSource.BLOCKS, 0.2F + random.nextFloat() * 0.2F, 0.9F + random.nextFloat() * 0.15F, false);
             }
 
             if (random.nextInt(200) == 0) {
-                world.playLocalSound((double)pos.getX(), (double)pos.getY(), (double)pos.getZ(), SoundEvents.LAVA_AMBIENT, SoundSource.BLOCKS, 0.2F + random.nextFloat() * 0.2F, 0.9F + random.nextFloat() * 0.15F, false);
+                world.playLocalSound((double) pos.getX(), (double) pos.getY(), (double) pos.getZ(), SoundEvents.LAVA_AMBIENT, SoundSource.BLOCKS, 0.2F + random.nextFloat() * 0.2F, 0.9F + random.nextFloat() * 0.15F, false);
             }
         }
 
@@ -65,34 +70,52 @@
     public void randomTick(Level world, BlockPos pos, FluidState state, RandomSource random) {
         if (world.getGameRules().getBoolean(GameRules.RULE_DOFIRETICK)) {
             int i = random.nextInt(3);
+
             if (i > 0) {
-                BlockPos blockPos = pos;
+                BlockPos blockposition1 = pos;
 
-                for(int j = 0; j < i; ++j) {
-                    blockPos = blockPos.offset(random.nextInt(3) - 1, 1, random.nextInt(3) - 1);
-                    if (!world.isLoaded(blockPos)) {
+                for (int j = 0; j < i; ++j) {
+                    blockposition1 = blockposition1.offset(random.nextInt(3) - 1, 1, random.nextInt(3) - 1);
+                    if (!world.isLoaded(blockposition1)) {
                         return;
                     }
 
-                    BlockState blockState = world.getBlockState(blockPos);
-                    if (blockState.isAir()) {
-                        if (this.hasFlammableNeighbours(world, blockPos)) {
-                            world.setBlockAndUpdate(blockPos, BaseFireBlock.getState(world, blockPos));
+                    BlockState iblockdata = world.getBlockState(blockposition1);
+
+                    if (iblockdata.isAir()) {
+                        if (this.hasFlammableNeighbours(world, blockposition1)) {
+                            // CraftBukkit start - Prevent lava putting something on fire
+                            if (world.getBlockState(blockposition1).getBlock() != Blocks.FIRE) {
+                                if (org.bukkit.craftbukkit.v1_19_R2.event.CraftEventFactory.callBlockIgniteEvent(world, blockposition1, pos).isCancelled()) {
+                                    continue;
+                                }
+                            }
+                            // CraftBukkit end
+                            world.setBlockAndUpdate(blockposition1, BaseFireBlock.getState(world, blockposition1));
                             return;
                         }
-                    } else if (blockState.getMaterial().blocksMotion()) {
+                    } else if (iblockdata.getMaterial().blocksMotion()) {
                         return;
                     }
                 }
             } else {
-                for(int k = 0; k < 3; ++k) {
-                    BlockPos blockPos2 = pos.offset(random.nextInt(3) - 1, 0, random.nextInt(3) - 1);
-                    if (!world.isLoaded(blockPos2)) {
+                for (int k = 0; k < 3; ++k) {
+                    BlockPos blockposition2 = pos.offset(random.nextInt(3) - 1, 0, random.nextInt(3) - 1);
+
+                    if (!world.isLoaded(blockposition2)) {
                         return;
                     }
 
-                    if (world.isEmptyBlock(blockPos2.above()) && this.isFlammable(world, blockPos2)) {
-                        world.setBlockAndUpdate(blockPos2.above(), BaseFireBlock.getState(world, blockPos2));
+                    if (world.isEmptyBlock(blockposition2.above()) && this.isFlammable(world, blockposition2)) {
+                        // CraftBukkit start - Prevent lava putting something on fire
+                        BlockPos up = blockposition2.above();
+                        if (world.getBlockState(up).getBlock() != Blocks.FIRE) {
+                            if (org.bukkit.craftbukkit.v1_19_R2.event.CraftEventFactory.callBlockIgniteEvent(world, up, pos).isCancelled()) {
+                                continue;
+                            }
+                        }
+                        // CraftBukkit end
+                        world.setBlockAndUpdate(blockposition2.above(), BaseFireBlock.getState(world, blockposition2));
                     }
                 }
             }
@@ -101,8 +124,13 @@
     }
 
     private boolean hasFlammableNeighbours(LevelReader world, BlockPos pos) {
-        for(Direction direction : Direction.values()) {
-            if (this.isFlammable(world, pos.relative(direction))) {
+        Direction[] aenumdirection = Direction.values();
+        int i = aenumdirection.length;
+
+        for (int j = 0; j < i; ++j) {
+            Direction enumdirection = aenumdirection[j];
+
+            if (this.isFlammable(world, pos.relative(enumdirection))) {
                 return true;
             }
         }
@@ -132,7 +160,7 @@
 
     @Override
     public BlockState createLegacyBlock(FluidState state) {
-        return Blocks.LAVA.defaultBlockState().setValue(LiquidBlock.LEVEL, Integer.valueOf(getLegacyLevel(state)));
+        return (BlockState) Blocks.LAVA.defaultBlockState().setValue(LiquidBlock.LEVEL, getLegacyLevel(state));
     }
 
     @Override
@@ -158,7 +186,8 @@
     @Override
     public int getSpreadDelay(Level world, BlockPos pos, FluidState oldState, FluidState newState) {
         int i = this.getTickDelay(world);
-        if (!oldState.isEmpty() && !newState.isEmpty() && !oldState.getValue(FALLING) && !newState.getValue(FALLING) && newState.getHeight(world, pos) > oldState.getHeight(world, pos) && world.getRandom().nextInt(4) != 0) {
+
+        if (!oldState.isEmpty() && !newState.isEmpty() && !(Boolean) oldState.getValue(LavaFluid.FALLING) && !(Boolean) newState.getValue(LavaFluid.FALLING) && newState.getHeight(world, pos) > oldState.getHeight(world, pos) && world.getRandom().nextInt(4) != 0) {
             i *= 4;
         }
 
@@ -177,10 +206,15 @@
     @Override
     protected void spreadTo(LevelAccessor world, BlockPos pos, BlockState state, Direction direction, FluidState fluidState) {
         if (direction == Direction.DOWN) {
-            FluidState fluidState2 = world.getFluidState(pos);
-            if (this.is(FluidTags.LAVA) && fluidState2.is(FluidTags.WATER)) {
+            FluidState fluid1 = world.getFluidState(pos);
+
+            if (this.is(FluidTags.LAVA) && fluid1.is(FluidTags.WATER)) {
                 if (state.getBlock() instanceof LiquidBlock) {
-                    world.setBlock(pos, Blocks.STONE.defaultBlockState(), 3);
+                    // CraftBukkit start
+                    if (!org.bukkit.craftbukkit.v1_19_R2.event.CraftEventFactory.handleBlockFormEvent(world.getMinecraftWorld(), pos, Blocks.STONE.defaultBlockState(), 3)) {
+                        return;
+                    }
+                    // CraftBukkit end
                 }
 
                 this.fizz(world, pos);
@@ -207,15 +241,18 @@
     }
 
     public static class Flowing extends LavaFluid {
+
+        public Flowing() {}
+
         @Override
         protected void createFluidStateDefinition(StateDefinition.Builder<Fluid, FluidState> builder) {
             super.createFluidStateDefinition(builder);
-            builder.add(LEVEL);
+            builder.add(LavaFluid.Flowing.LEVEL);
         }
 
         @Override
         public int getAmount(FluidState state) {
-            return state.getValue(LEVEL);
+            return (Integer) state.getValue(LavaFluid.Flowing.LEVEL);
         }
 
         @Override
@@ -225,6 +262,9 @@
     }
 
     public static class Source extends LavaFluid {
+
+        public Source() {}
+
         @Override
         public int getAmount(FluidState state) {
             return 8;
