Paper/nms-patches/BlockPortal.patch

--- a/net/minecraft/server/BlockPortal.java
+++ b/net/minecraft/server/BlockPortal.java
@@ -3,6 +3,9 @@
 import com.google.common.cache.LoadingCache;
 import java.util.Random;
 
+import org.bukkit.event.entity.EntityPortalEnterEvent; // CraftBukkit
+import org.bukkit.event.world.PortalCreateEvent; // CraftBukkit
+
 public class BlockPortal extends BlockHalfTransparent {
 
     public static final BlockStateEnum<EnumDirection.EnumAxis> AXIS = BlockStateEnum.of("axis", EnumDirection.EnumAxis.class, new EnumDirection.EnumAxis[] { EnumDirection.EnumAxis.X, EnumDirection.EnumAxis.Z});
@@ -25,7 +28,8 @@
             }
 
             if (i > 0 && !world.getType(blockposition1.up()).getBlock().isOccluding()) {
-                Entity entity = ItemMonsterEgg.a(world, 57, (double) blockposition1.getX() + 0.5D, (double) blockposition1.getY() + 1.1D, (double) blockposition1.getZ() + 0.5D);
+                // CraftBukkit - set spawn reason to NETHER_PORTAL
+                Entity entity = ItemMonsterEgg.spawnCreature(world, 57, (double) blockposition1.getX() + 0.5D, (double) blockposition1.getY() + 1.1D, (double) blockposition1.getZ() + 0.5D, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.NETHER_PORTAL);
 
                 if (entity != null) {
                     entity.portalCooldown = entity.aq();
@@ -67,14 +71,16 @@
         BlockPortal.Shape blockportal_shape = new BlockPortal.Shape(world, blockposition, EnumDirection.EnumAxis.X);
 
         if (blockportal_shape.d() && blockportal_shape.e == 0) {
-            blockportal_shape.e();
-            return true;
+            // CraftBukkit start - return portalcreator
+            return blockportal_shape.e();
+            // return true;
         } else {
             BlockPortal.Shape blockportal_shape1 = new BlockPortal.Shape(world, blockposition, EnumDirection.EnumAxis.Z);
 
             if (blockportal_shape1.d() && blockportal_shape1.e == 0) {
-                blockportal_shape1.e();
-                return true;
+                return blockportal_shape1.e();
+                // return true;
+                // CraftBukkit end
             } else {
                 return false;
             }
@@ -105,6 +111,10 @@
 
     public void a(World world, BlockPosition blockposition, IBlockData iblockdata, Entity entity) {
         if (entity.vehicle == null && entity.passenger == null) {
+            // CraftBukkit start - Entity in portal
+            EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), blockposition.getX(), blockposition.getY(), blockposition.getZ()));
+            world.getServer().getPluginManager().callEvent(event);
+            // CraftBukkit end
             entity.d(blockposition);
         }
 
@@ -185,6 +195,7 @@
         private BlockPosition f;
         private int g;
         private int h;
+        java.util.Collection<org.bukkit.block.Block> blocks = new java.util.HashSet<org.bukkit.block.Block>(); // CraftBukkit - add field
 
         public Shape(World world, BlockPosition blockposition, EnumDirection.EnumAxis enumdirection_enumaxis) {
             this.a = world;
@@ -243,6 +254,10 @@
         }
 
         protected int c() {
+            // CraftBukkit start
+            this.blocks.clear();
+            org.bukkit.World bworld = this.a.getWorld();
+            // CraftBukkit end
             int i;
 
             label56:
@@ -263,11 +278,21 @@
                         block = this.a.getType(blockposition.shift(this.d)).getBlock();
                         if (block != Blocks.OBSIDIAN) {
                             break label56;
+                            // CraftBukkit start - add the block to our list
+                        } else {
+                            BlockPosition pos = blockposition.shift(this.d);
+                            blocks.add(bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ()));
+                            // CraftBukkit end
                         }
                     } else if (i == this.h - 1) {
                         block = this.a.getType(blockposition.shift(this.c)).getBlock();
                         if (block != Blocks.OBSIDIAN) {
                             break label56;
+                            // CraftBukkit start - add the block to our list
+                        } else {
+                            BlockPosition pos = blockposition.shift(this.c);
+                            blocks.add(bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ()));
+                            // CraftBukkit end
                         }
                     }
                 }
@@ -277,6 +302,11 @@
                 if (this.a.getType(this.f.shift(this.c, i).up(this.g)).getBlock() != Blocks.OBSIDIAN) {
                     this.g = 0;
                     break;
+                    // CraftBukkit start - add the block to our list
+                } else {
+                    BlockPosition pos = this.f.shift(this.c, i).up(this.g);
+                    blocks.add(bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ()));
+                    // CraftBukkit end
                 }
             }
 
@@ -298,7 +328,27 @@
             return this.f != null && this.h >= 2 && this.h <= 21 && this.g >= 3 && this.g <= 21;
         }
 
-        public void e() {
+        // CraftBukkit start - return boolean
+        public boolean e() {
+            org.bukkit.World bworld = this.a.getWorld();
+
+            // Copy below for loop
+            for (int i = 0; i < this.h; ++i) {
+                BlockPosition blockposition = this.f.shift(this.c, i);
+
+                for (int j = 0; j < this.g; ++j) {
+                    BlockPosition pos = blockposition.up(j);
+                    blocks.add(bworld.getBlockAt(pos.getX(), pos.getY(), pos.getZ()));
+                }
+            }
+
+            PortalCreateEvent event = new PortalCreateEvent(blocks, bworld, PortalCreateEvent.CreateReason.FIRE);
+            this.a.getServer().getPluginManager().callEvent(event);
+
+            if (event.isCancelled()) {
+                return false;
+            }
+            // CraftBukkit end
             for (int i = 0; i < this.h; ++i) {
                 BlockPosition blockposition = this.f.shift(this.c, i);
 
@@ -307,6 +357,7 @@
                 }
             }
 
+            return true; // CraftBukkit
         }
     }
 }