Paper/nms-patches/TileEntityEndGateway.patch

--- a/net/minecraft/server/TileEntityEndGateway.java
+++ b/net/minecraft/server/TileEntityEndGateway.java
@@ -6,6 +6,12 @@
 import javax.annotation.Nullable;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
+// CraftBukkit start
+import org.bukkit.Bukkit;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.entity.CraftPlayer;
+import org.bukkit.event.player.PlayerTeleportEvent;
+// CraftBukkit end
 
 public class TileEntityEndGateway extends TileEntityEnderPortal implements ITickable {
 
@@ -113,7 +119,7 @@
     public void a(Entity entity) {
         if (this.world instanceof WorldServer && !this.f()) {
             this.c = 100;
-            if (this.exitPortal == null && this.world.getDimensionKey() == World.THE_END) {
+            if (this.exitPortal == null && this.world.getTypeKey() == DimensionManager.THE_END) { // CraftBukkit - work in alternate worlds
                 this.a((WorldServer) this.world);
             }
 
@@ -138,6 +144,26 @@
                     entity1 = entity.getRootVehicle();
                 }
 
+                // CraftBukkit start - Fire PlayerTeleportEvent
+                if (entity1 instanceof EntityPlayer) {
+                    org.bukkit.craftbukkit.entity.CraftPlayer player = (CraftPlayer) entity1.getBukkitEntity();
+                    org.bukkit.Location location = new Location(world.getWorld(), (double) blockposition.getX() + 0.5D, (double) blockposition.getY() + 0.5D, (double) blockposition.getZ() + 0.5D);
+                    location.setPitch(player.getLocation().getPitch());
+                    location.setYaw(player.getLocation().getYaw());
+
+                    PlayerTeleportEvent teleEvent = new PlayerTeleportEvent(player, player.getLocation(), location, PlayerTeleportEvent.TeleportCause.END_GATEWAY);
+                    Bukkit.getPluginManager().callEvent(teleEvent);
+                    if (teleEvent.isCancelled()) {
+                        return;
+                    }
+
+                    ((EntityPlayer) entity1).playerConnection.teleport(teleEvent.getTo());
+                    this.h(); // CraftBukkit - call at end of method
+                    return;
+
+                }
+                // CraftBukkit end
+
                 entity1.enderTeleportAndLoad((double) blockposition.getX() + 0.5D, (double) blockposition.getY(), (double) blockposition.getZ() + 0.5D);
             }
 
@@ -173,7 +199,7 @@
         if (this.exitPortal == null) {
             this.exitPortal = new BlockPosition(vec3d1.x + 0.5D, 75.0D, vec3d1.z + 0.5D);
             TileEntityEndGateway.LOGGER.debug("Failed to find suitable block, settling on {}", this.exitPortal);
-            WorldGenerator.END_ISLAND.b((WorldGenFeatureConfiguration) WorldGenFeatureConfiguration.k).a(worldserver, worldserver.getStructureManager(), worldserver.getChunkProvider().getChunkGenerator(), new Random(this.exitPortal.asLong()), this.exitPortal);
+            WorldGenerator.END_ISLAND.b(WorldGenFeatureConfiguration.k).a(worldserver, worldserver.getStructureManager(), worldserver.getChunkProvider().getChunkGenerator(), new Random(this.exitPortal.asLong()), this.exitPortal); // CraftBukkit - decompile error
         } else {
             TileEntityEndGateway.LOGGER.debug("Found block at {}", this.exitPortal);
         }
@@ -241,7 +267,7 @@
     }
 
     private void a(WorldServer worldserver, BlockPosition blockposition) {
-        WorldGenerator.END_GATEWAY.b((WorldGenFeatureConfiguration) WorldGenEndGatewayConfiguration.a(this.getPosition(), false)).a(worldserver, worldserver.getStructureManager(), worldserver.getChunkProvider().getChunkGenerator(), new Random(), blockposition);
+        WorldGenerator.END_GATEWAY.b(WorldGenEndGatewayConfiguration.a(this.getPosition(), false)).a(worldserver, worldserver.getStructureManager(), worldserver.getChunkProvider().getChunkGenerator(), new Random(), blockposition); // CraftBukkit - decompile error
     }
 
     public void a(BlockPosition blockposition, boolean flag) {