SPIGOT-2886: Call BlockFormEvent when Lava and Water collide

nms-patches/BlockFlowing.patch

@@ -24,7 +24,7 @@
          int i = ((Integer) iblockdata.get(BlockFlowing.LEVEL)).intValue();
          byte b0 = 1;
  
-@@ -88,6 +98,12 @@
+@@ -88,9 +98,16 @@
          IBlockData iblockdata2 = world.getType(blockposition.down());
  
          if (this.h(world, blockposition.down(), iblockdata2)) {
@@ -35,9 +35,14 @@
 +            }
 +            if (!event.isCancelled()) {
              if (this.material == Material.LAVA && world.getType(blockposition.down()).getMaterial() == Material.WATER) {
-                 world.setTypeUpdate(blockposition.down(), Blocks.STONE.getBlockData());
+-                world.setTypeUpdate(blockposition.down(), Blocks.STONE.getBlockData());
++                if (org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockFormEvent(world, blockposition.down(), Blocks.STONE, null)){
                  this.fizz(world, blockposition.down());
-@@ -99,6 +115,8 @@
++                }
+                 return;
+             }
+ 
+@@ -99,6 +116,8 @@
              } else {
                  this.flow(world, blockposition.down(), iblockdata2, i + 8);
              }
@@ -46,7 +51,7 @@
          } else if (i >= 0 && (i == 0 || this.g(world, blockposition.down(), iblockdata2))) {
              Set set = this.c(world, blockposition);
  
-@@ -116,14 +134,23 @@
+@@ -116,14 +135,23 @@
              while (iterator1.hasNext()) {
                  EnumDirection enumdirection1 = (EnumDirection) iterator1.next();
  

nms-patches/BlockFluids.patch

@@ -0,0 +1,27 @@
+--- a/net/minecraft/server/BlockFluids.java
++++ b/net/minecraft/server/BlockFluids.java
+@@ -163,14 +163,20 @@
+                 Integer integer = (Integer) iblockdata.get(BlockFluids.LEVEL);
+ 
+                 if (integer.intValue() == 0) {
+-                    world.setTypeUpdate(blockposition, Blocks.OBSIDIAN.getBlockData());
+-                    this.fizz(world, blockposition);
++                    // CraftBukkit start
++                    if (org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockFormEvent(world, blockposition, Blocks.OBSIDIAN, null)) {
++                        this.fizz(world, blockposition);
++                    }
++                    // CraftBukkit end
+                     return true;
+                 }
+ 
+                 if (integer.intValue() <= 4) {
+-                    world.setTypeUpdate(blockposition, Blocks.COBBLESTONE.getBlockData());
+-                    this.fizz(world, blockposition);
++                    // CraftBukkit start
++                    if (org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockFormEvent(world, blockposition, Blocks.COBBLESTONE, null)) {
++                        this.fizz(world, blockposition);
++                    }
++                    // CraftBukkit end
+                     return true;
+                 }
+             }