Fix special spawn event not firing in many cases. (#5389)

Co-authored-by: tterrag <tterrag1098@gmail.com>

patches/minecraft/net/minecraft/entity/EntityType.java.patch

@@ -9,7 +9,15 @@
     private static final Logger field_200731_aJ = LogManager.getLogger();
     public static final EntityType<EntityAreaEffectCloud> field_200788_b = func_200712_a("area_effect_cloud", EntityType.Builder.func_201757_a(EntityAreaEffectCloud.class, EntityAreaEffectCloud::new));
     public static final EntityType<EntityArmorStand> field_200789_c = func_200712_a("armor_stand", EntityType.Builder.func_201757_a(EntityArmorStand.class, EntityArmorStand::new));
-@@ -386,15 +386,53 @@
+@@ -263,6 +263,7 @@
+    @Nullable
+    public T func_208050_a(World p_208050_1_, @Nullable NBTTagCompound p_208050_2_, @Nullable ITextComponent p_208050_3_, @Nullable EntityPlayer p_208050_4_, BlockPos p_208050_5_, boolean p_208050_6_, boolean p_208050_7_) {
+       T t = this.func_210761_b(p_208050_1_, p_208050_2_, p_208050_3_, p_208050_4_, p_208050_5_, p_208050_6_, p_208050_7_);
++      if (t instanceof net.minecraft.entity.EntityLiving && net.minecraftforge.event.ForgeEventFactory.doSpecialSpawn((EntityLiving) t, p_208050_1_, p_208050_5_.func_177958_n(), p_208050_5_.func_177956_o(), p_208050_5_.func_177952_p(), null)) return null;
+       p_208050_1_.func_72838_d(t);
+       return t;
+    }
+@@ -386,15 +387,53 @@
        return p_200719_1_ == null ? null : p_200719_1_.func_200721_a(p_200719_0_);
     }
  
@@ -63,7 +71,7 @@
        }
  
        public static <T extends Entity> EntityType.Builder<T> func_201757_a(Class<? extends T> p_201757_0_, Function<? super World, ? extends T> p_201757_1_) {
-@@ -417,12 +455,26 @@
+@@ -417,12 +456,26 @@
           return this;
        }
  
@@ -91,7 +99,7 @@
                 if (SharedConstants.field_206244_b) {
                    throw illegalstateexception;
                 }
-@@ -431,7 +483,7 @@
+@@ -431,7 +484,7 @@
              }
           }
  

src/test/java/net/minecraftforge/debug/entity/living/SpecialSpawnTest.java

@@ -0,0 +1,47 @@
+/*
+ * Minecraft Forge
+ * Copyright (c) 2016-2018.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+package net.minecraftforge.debug.entity.living;
+
+import net.minecraft.entity.monster.EntityPigZombie;
+import net.minecraftforge.event.entity.living.LivingSpawnEvent;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+
+@Mod(modid = SpecialSpawnTest.MOD_ID, name = "Special Spawn Test", version = "1.0", acceptableRemoteVersions = "*")
+@Mod.EventBusSubscriber(modid = SpecialSpawnTest.MOD_ID)
+public class SpecialSpawnTest
+{
+    static final String MOD_ID = "special_spawn_test";
+    static final boolean ENABLED = false;
+
+    @SubscribeEvent
+    public static void onSpecialSpawn(LivingSpawnEvent.SpecialSpawn event)
+    {
+        if (!ENABLED)
+        {
+            return;
+        }
+
+        if (event.getEntity() instanceof EntityPigZombie)
+        {
+            event.getEntity().setCustomNameTag("Called SpecialSpawn");
+        }
+    }
+}