From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Fri, 7 Feb 2020 14:36:56 -0600
Subject: [PATCH] Add option to nerf pigmen from nether portals


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 0cae631634823c4e062cba5e98c0d7cb580c678c..a5b04bd80be0e1d2c474c5d298e56a09a3ab5b9d 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -592,4 +592,9 @@ public class PaperWorldConfig {
         disableHopperMoveEvents = getBoolean("hopper.disable-move-event", disableHopperMoveEvents);
         log("Hopper Move Item Events: " + (disableHopperMoveEvents ? "disabled" : "enabled"));
     }
+
+    public boolean nerfNetherPortalPigmen = false;
+    private void nerfNetherPortalPigmen() {
+        nerfNetherPortalPigmen = getBoolean("game-mechanics.nerf-pigmen-from-nether-portals", nerfNetherPortalPigmen);
+    }
 }
diff --git a/src/main/java/net/minecraft/server/BlockPortal.java b/src/main/java/net/minecraft/server/BlockPortal.java
index a224a04ee1bb9705166913ef1c66aa031d87c270..4132cd4c6f13cfa1c0cda43daaa908ff3c07f32b 100644
--- a/src/main/java/net/minecraft/server/BlockPortal.java
+++ b/src/main/java/net/minecraft/server/BlockPortal.java
@@ -44,6 +44,8 @@ public class BlockPortal extends Block {
 
                 if (entity != null) {
                     entity.resetPortalCooldown();
+                    entity.fromNetherPortal = true; // Paper
+                    if (worldserver.paperConfig.nerfNetherPortalPigmen) ((EntityInsentient) entity).aware = false; // Paper
                 }
             }
         }
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 240675705fe52af6326b78ce0e3bf8ec0e8b50e1..d728a3aae38c083fe8dfa28a8b8460545e99bcb9 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -189,6 +189,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
     public long activatedTick = Integer.MIN_VALUE;
     public boolean isTemporarilyActive = false; // Paper
     public boolean spawnedViaMobSpawner; // Paper - Yes this name is similar to above, upstream took the better one
+    public boolean fromNetherPortal; // Paper
     protected int numCollisions = 0; // Paper
     public void inactiveTick() { }
     // Spigot end
@@ -1604,6 +1605,9 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
             if (spawnedViaMobSpawner) {
                 nbttagcompound.setBoolean("Paper.FromMobSpawner", true);
             }
+            if (fromNetherPortal) {
+                nbttagcompound.setBoolean("Paper.FromNetherPortal", true);
+            }
             // Paper end
             return nbttagcompound;
         } catch (Throwable throwable) {
@@ -1734,6 +1738,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
             }
 
             spawnedViaMobSpawner = nbttagcompound.getBoolean("Paper.FromMobSpawner"); // Restore entity's from mob spawner status
+            fromNetherPortal = nbttagcompound.getBoolean("Paper.FromNetherPortal");
             if (nbttagcompound.hasKey("Paper.SpawnReason")) {
                 String spawnReasonName = nbttagcompound.getString("Paper.SpawnReason");
                 try {