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

--- ../src-base/minecraft/net/minecraft/block/BlockDynamicLiquid.java
+++ ../src-work/minecraft/net/minecraft/block/BlockDynamicLiquid.java
@@ -5,6 +5,11 @@
 import net.minecraft.init.Blocks;
 import net.minecraft.world.World;
 
+// CraftBukkit start
+import org.bukkit.block.BlockFace;
+import org.bukkit.event.block.BlockFromToEvent;
+// CraftBukkit end
+
 public class BlockDynamicLiquid extends BlockLiquid
 {
     int field_149815_a;
@@ -37,6 +42,12 @@
         int i1 = this.tickRate(p_149674_1_);
         int j1;
 
+        // Cauldron - move CB edit to after variable initialization for coremod compatibility
+        // CraftBukkit start
+        org.bukkit.World bworld = p_149674_1_.getWorld();
+        org.bukkit.Server server = p_149674_1_.getServer();
+        org.bukkit.block.Block source = bworld == null ? null : bworld.getBlockAt(p_149674_2_, p_149674_3_, p_149674_4_);
+        // CraftBukkit end
         if (l > 0)
         {
             byte b1 = -100;
@@ -66,17 +77,22 @@
                 }
             }
 
-            if (this.field_149815_a >= 2 && this.blockMaterial == Material.water)
+            // Cauldron start - allow disabling infinite water sources
+            if(net.minecraft.server.MinecraftServer.getServer().cauldronConfig.infiniteWaterSource.getValue())
             {
-                if (p_149674_1_.getBlock(p_149674_2_, p_149674_3_ - 1, p_149674_4_).getMaterial().isSolid())
+                if (this.field_149815_a >= 2 && this.blockMaterial == Material.water)
                 {
-                    j1 = 0;
+                    if (p_149674_1_.getBlock(p_149674_2_, p_149674_3_ - 1, p_149674_4_).getMaterial().isSolid())
+                    {
+                        j1 = 0;
+                    }
+                    else if (p_149674_1_.getBlock(p_149674_2_, p_149674_3_ - 1, p_149674_4_).getMaterial() == this.blockMaterial && p_149674_1_.getBlockMetadata(p_149674_2_, p_149674_3_ - 1, p_149674_4_) == 0)
+                    {
+                        j1 = 0;
+                    }
                 }
-                else if (p_149674_1_.getBlock(p_149674_2_, p_149674_3_ - 1, p_149674_4_).getMaterial() == this.blockMaterial && p_149674_1_.getBlockMetadata(p_149674_2_, p_149674_3_ - 1, p_149674_4_) == 0)
-                {
-                    j1 = 0;
-                }
             }
+            // Cauldron end
 
             if (this.blockMaterial == Material.lava && l < 8 && j1 < 8 && j1 > l && p_149674_5_.nextInt(4) != 0)
             {
@@ -89,6 +105,13 @@
                 {
                     this.func_149811_n(p_149674_1_, p_149674_2_, p_149674_3_, p_149674_4_);
                 }
+                // Cauldron start - allow lava decaying at a 'natural' rate - see https://mojang.atlassian.net/browse/MC-4631 Lava decay fails to schedule block update
+                else if (net.minecraft.server.MinecraftServer.getServer().cauldronConfig.flowingLavaDecay.getValue())
+                {
+                    // Ensure that even if the flow decay was skipped, it will retry at the material's natural flow period.
+                    p_149674_1_.scheduleBlockUpdate(p_149674_2_, p_149674_3_, p_149674_4_, this, this.tickRate(p_149674_1_));
+                }
+                // Cauldron end
             }
             else
             {
@@ -102,7 +125,18 @@
                 {
                     p_149674_1_.setBlockMetadataWithNotify(p_149674_2_, p_149674_3_, p_149674_4_, j1, 2);
                     p_149674_1_.scheduleBlockUpdate(p_149674_2_, p_149674_3_, p_149674_4_, this, i1);
-                    p_149674_1_.notifyBlocksOfNeighborChange(p_149674_2_, p_149674_3_, p_149674_4_, this);
+                    
+                    // Thermos follow PaperSpigot style and do this right here
+                    p_149674_1_.notifyBlockOfNeighborChange(p_149674_2_ - 1, p_149674_3_, p_149674_4_, this);
+                    p_149674_1_.notifyBlockOfNeighborChange(p_149674_2_ + 1, p_149674_3_, p_149674_4_, this);
+                    
+                    // DON'T UPDATE THIS ONE PAPER SPIGOT SAYS DON'T DO IT
+                    //p_149674_1_.notifyBlockOfNeighborChange(p_149674_2_, p_149674_3_ - 1, p_149674_4_, this);
+                    
+                    p_149674_1_.notifyBlockOfNeighborChange(p_149674_2_, p_149674_3_ + 1, p_149674_4_, this);
+                    p_149674_1_.notifyBlockOfNeighborChange(p_149674_2_, p_149674_3_, p_149674_4_ - 1, this);
+                    p_149674_1_.notifyBlockOfNeighborChange(p_149674_2_, p_149674_3_, p_149674_4_ + 1, this);
+                    // p_149674_1_.notifyBlocksOfNeighborChange(p_149674_2_, p_149674_3_, p_149674_4_, this);
                 }
             }
         }
@@ -111,23 +145,39 @@
             this.func_149811_n(p_149674_1_, p_149674_2_, p_149674_3_, p_149674_4_);
         }
 
+        if (p_149674_1_.getType(p_149674_2_, p_149674_3_, p_149674_4_).getMaterial() != this.blockMaterial) { return; } // PaperSpigot - Stop updating flowing block if material has changed
+
         if (this.func_149809_q(p_149674_1_, p_149674_2_, p_149674_3_ - 1, p_149674_4_))
         {
-            if (this.blockMaterial == Material.lava && p_149674_1_.getBlock(p_149674_2_, p_149674_3_ - 1, p_149674_4_).getMaterial() == Material.water)
+            if (!canFlowTo(p_149674_1_, source, BlockFace.DOWN)) { return; } // Paper
+            // CraftBukkit start - Send "down" to the server
+            BlockFromToEvent event = new BlockFromToEvent(source, BlockFace.DOWN);
+
+            if (server != null && source != null)
             {
-                p_149674_1_.setBlock(p_149674_2_, p_149674_3_ - 1, p_149674_4_, Blocks.stone);
-                this.func_149799_m(p_149674_1_, p_149674_2_, p_149674_3_ - 1, p_149674_4_);
-                return;
+                server.getPluginManager().callEvent(event);
             }
 
-            if (l >= 8)
+            if (!event.isCancelled())
             {
-                this.func_149813_h(p_149674_1_, p_149674_2_, p_149674_3_ - 1, p_149674_4_, l);
+                if (this.blockMaterial == Material.lava && p_149674_1_.getBlock(p_149674_2_, p_149674_3_ - 1, p_149674_4_).getMaterial() == Material.water)
+                {
+                    p_149674_1_.setBlock(p_149674_2_, p_149674_3_ - 1, p_149674_4_, Blocks.stone);
+                    this.func_149799_m(p_149674_1_, p_149674_2_, p_149674_3_ - 1, p_149674_4_);
+                    return;
+                }
+
+                if (l >= 8)
+                {
+                    this.func_149813_h(p_149674_1_, p_149674_2_, p_149674_3_ - 1, p_149674_4_, l);
+                }
+                else
+                {
+                    this.func_149813_h(p_149674_1_, p_149674_2_, p_149674_3_ - 1, p_149674_4_, l + 8);
+                }
             }
-            else
-            {
-                this.func_149813_h(p_149674_1_, p_149674_2_, p_149674_3_ - 1, p_149674_4_, l + 8);
-            }
+
+            // CraftBukkit end
         }
         else if (l >= 0 && (l == 0 || this.func_149807_p(p_149674_1_, p_149674_2_, p_149674_3_ - 1, p_149674_4_)))
         {
@@ -144,25 +194,32 @@
                 return;
             }
 
-            if (aboolean[0])
-            {
-                this.func_149813_h(p_149674_1_, p_149674_2_ - 1, p_149674_3_, p_149674_4_, j1);
-            }
+            // CraftBukkit start - All four cardinal directions. Do not change the order!
+            BlockFace[] faces = new BlockFace[] { BlockFace.WEST, BlockFace.EAST, BlockFace.NORTH, BlockFace.SOUTH };
+            int index = 0;
 
-            if (aboolean[1])
+            for (BlockFace currentFace : faces)
             {
-                this.func_149813_h(p_149674_1_, p_149674_2_ + 1, p_149674_3_, p_149674_4_, j1);
-            }
+                if (aboolean[index])
+                {
+                    if (!canFlowTo(p_149674_1_, source, currentFace)) { continue; } // Paper
+                    BlockFromToEvent event = new BlockFromToEvent(source, currentFace);
 
-            if (aboolean[2])
-            {
-                this.func_149813_h(p_149674_1_, p_149674_2_, p_149674_3_, p_149674_4_ - 1, j1);
-            }
+                    if (server != null && source != null)
+                    {
+                        server.getPluginManager().callEvent(event);
+                    }
 
-            if (aboolean[3])
-            {
-                this.func_149813_h(p_149674_1_, p_149674_2_, p_149674_3_, p_149674_4_ + 1, j1);
+                    if (!event.isCancelled())
+                    {
+                        this.func_149813_h(p_149674_1_, p_149674_2_ + currentFace.getModX(), p_149674_3_, p_149674_4_ + currentFace.getModZ(), j1);
+                    }
+                }
+
+                index++;
             }
+
+            // CraftBukkit end
         }
     }
 
@@ -351,4 +408,10 @@
     {
         return true;
     }
+
+    // Paper start
+    private boolean canFlowTo(World world, org.bukkit.block.Block source, BlockFace face) {
+        return source.getWorld().isChunkLoaded((source.getX() + face.getModX()) >> 4, (source.getZ() + face.getModZ()) >> 4);
+    }
+    // Paper end
 }