PaperMC/nms-patches/BlockPumpkinCarved.patch

--- a/net/minecraft/server/BlockPumpkinCarved.java
+++ b/net/minecraft/server/BlockPumpkinCarved.java
@@ -4,6 +4,12 @@
 import java.util.function.Predicate;
 import javax.annotation.Nullable;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.util.BlockStateListPopulator;
+import org.bukkit.event.block.BlockRedstoneEvent;
+import org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason;
+// CraftBukkit end
+
 public class BlockPumpkinCarved extends BlockFacingHorizontal {
 
     public static final BlockStateDirection a = BlockFacingHorizontal.FACING;
@@ -42,19 +48,28 @@
         EntityPlayer entityplayer;
         int j;
 
+        BlockStateListPopulator blockList = new BlockStateListPopulator(world); // CraftBukkit - Use BlockStateListPopulator
         if (shapedetector_shapedetectorcollection != null) {
             for (i = 0; i < this.getSnowmanShape().b(); ++i) {
                 ShapeDetectorBlock shapedetectorblock = shapedetector_shapedetectorcollection.a(0, i, 0);
 
-                world.setTypeAndData(shapedetectorblock.getPosition(), Blocks.AIR.getBlockData(), 2);
-                world.triggerEffect(2001, shapedetectorblock.getPosition(), Block.getCombinedId(shapedetectorblock.a()));
+                blockList.setTypeAndData(shapedetectorblock.getPosition(), Blocks.AIR.getBlockData(), 2); // CraftBukkit
+                // world.triggerEffect(2001, shapedetectorblock.getPosition(), Block.getCombinedId(shapedetectorblock.a())); // CraftBukkit
             }
 
             EntitySnowman entitysnowman = (EntitySnowman) EntityTypes.SNOW_GOLEM.a(world);
             BlockPosition blockposition1 = shapedetector_shapedetectorcollection.a(0, 2, 0).getPosition();
 
             entitysnowman.setPositionRotation((double) blockposition1.getX() + 0.5D, (double) blockposition1.getY() + 0.05D, (double) blockposition1.getZ() + 0.5D, 0.0F, 0.0F);
-            world.addEntity(entitysnowman);
+            // CraftBukkit start
+            if (!world.addEntity(entitysnowman, SpawnReason.BUILD_SNOWMAN)) {
+                return;
+            }
+            for (BlockPosition pos : blockList.getBlocks()) {
+                world.triggerEffect(2001, pos, Block.getCombinedId(world.getType(pos)));
+            }
+            blockList.updateList();
+            // CraftBukkit end
             iterator = world.a(EntityPlayer.class, entitysnowman.getBoundingBox().g(5.0D)).iterator();
 
             while (iterator.hasNext()) {
@@ -74,8 +89,8 @@
                     for (int k = 0; k < this.getIronGolemShape().b(); ++k) {
                         ShapeDetectorBlock shapedetectorblock2 = shapedetector_shapedetectorcollection.a(i, k, 0);
 
-                        world.setTypeAndData(shapedetectorblock2.getPosition(), Blocks.AIR.getBlockData(), 2);
-                        world.triggerEffect(2001, shapedetectorblock2.getPosition(), Block.getCombinedId(shapedetectorblock2.a()));
+                        blockList.setTypeAndData(shapedetectorblock2.getPosition(), Blocks.AIR.getBlockData(), 2); // CraftBukkit
+                        // world.triggerEffect(2001, shapedetectorblock2.getPosition(), Block.getCombinedId(shapedetectorblock2.a())); // CraftBukkit
                     }
                 }
 
@@ -84,7 +99,15 @@
 
                 entityirongolem.setPlayerCreated(true);
                 entityirongolem.setPositionRotation((double) blockposition2.getX() + 0.5D, (double) blockposition2.getY() + 0.05D, (double) blockposition2.getZ() + 0.5D, 0.0F, 0.0F);
-                world.addEntity(entityirongolem);
+                // CraftBukkit start
+                if (!world.addEntity(entityirongolem, SpawnReason.BUILD_IRONGOLEM)) {
+                    return;
+                }
+                for (BlockPosition pos : blockList.getBlocks()) {
+                    world.triggerEffect(2001, pos, Block.getCombinedId(world.getType(pos)));
+                }
+                blockList.updateList();
+                // CraftBukkit end
                 iterator = world.a(EntityPlayer.class, entityirongolem.getBoundingBox().g(5.0D)).iterator();
 
                 while (iterator.hasNext()) {