CatServer/patches/net/minecraft/block/BlockDynamicLiquid.java.patch

--- ../src-base/minecraft/net/minecraft/block/BlockDynamicLiquid.java
+++ ../src-work/minecraft/net/minecraft/block/BlockDynamicLiquid.java
@@ -3,6 +3,9 @@
 import java.util.EnumSet;
 import java.util.Random;
 import java.util.Set;
+
+import org.bukkit.event.block.BlockFromToEvent;
+
 import net.minecraft.block.material.Material;
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.init.Blocks;
@@ -26,6 +29,11 @@
 
     public void updateTick(World worldIn, BlockPos pos, IBlockState state, Random rand)
     {
+        // CraftBukkit start
+        org.bukkit.World bworld = worldIn.getWorld();
+        org.bukkit.Server server = worldIn.getServer();
+        org.bukkit.block.Block source = bworld == null ? null : bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ());
+        // CraftBukkit end
         int i = ((Integer)state.getValue(LEVEL)).intValue();
         int j = 1;
 
@@ -116,6 +124,13 @@
 
         if (this.canFlowInto(worldIn, pos.down(), iblockstate1))
         {
+            // CraftBukkit start - Send "down" to the server
+            BlockFromToEvent event = new BlockFromToEvent(source, org.bukkit.block.BlockFace.DOWN);
+            if (server != null) {
+                server.getPluginManager().callEvent(event);
+            }
+
+            if (!event.isCancelled()) {
             if (this.blockMaterial == Material.LAVA && worldIn.getBlockState(pos.down()).getMaterial() == Material.WATER)
             {
                 worldIn.setBlockState(pos.down(), Blocks.STONE.getDefaultState());
@@ -131,6 +146,8 @@
             {
                 this.tryFlowInto(worldIn, pos.down(), iblockstate1, i + 8);
             }
+            }
+            // CraftBukkit end
         }
         else if (i >= 0 && (i == 0 || this.isBlocked(worldIn, pos.down(), iblockstate1)))
         {
@@ -149,7 +166,16 @@
 
             for (EnumFacing enumfacing1 : set)
             {
-                this.tryFlowInto(worldIn, pos.offset(enumfacing1), worldIn.getBlockState(pos.offset(enumfacing1)), k1);
+                // CraftBukkit start
+                BlockFromToEvent event = new BlockFromToEvent(source, org.bukkit.craftbukkit.block.CraftBlock.notchToBlockFace(enumfacing1));
+                if (server != null) {
+                    server.getPluginManager().callEvent(event);
+                }
+
+                if (!event.isCancelled()) {
+                    this.tryFlowInto(worldIn, pos.offset(enumfacing1), worldIn.getBlockState(pos.offset(enumfacing1)), k1);
+                }
+                // CraftBukkit end
             }
         }
     }