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 2a0319d45de0bfb246313a6e533d26aa24c28df1..38aa300d296124729297aa5c6975f797961d7063 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -526,6 +526,11 @@ public class PaperWorldConfig {
         log("Hopper Ignore Occluding Blocks: " + (hoppersIgnoreOccludingBlocks ? "enabled" : "disabled"));
     }
 
+    public boolean nerfNetherPortalPigmen = false;
+    private void nerfNetherPortalPigmen() {
+        nerfNetherPortalPigmen = getBoolean("game-mechanics.nerf-pigmen-from-nether-portals", nerfNetherPortalPigmen);
+    }
+
     public int lightQueueSize = 20;
     private void lightQueueSize() {
         lightQueueSize = getInt("light-queue-size", lightQueueSize);
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index ee66ad71eee4619bb69eaada8f6a0a42a03283d4..13e6fd62d7e9026a31455c5e2fa36392c7a0b249 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -333,6 +333,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
     public long activatedImmunityTick = Integer.MIN_VALUE; // Paper
     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
@@ -1875,6 +1876,9 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
             if (spawnedViaMobSpawner) {
                 nbt.putBoolean("Paper.FromMobSpawner", true);
             }
+            if (fromNetherPortal) {
+                nbt.putBoolean("Paper.FromNetherPortal", true);
+            }
             // Paper end
             return nbt;
         } catch (Throwable throwable) {
@@ -2016,6 +2020,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
             }
 
             spawnedViaMobSpawner = nbt.getBoolean("Paper.FromMobSpawner"); // Restore entity's from mob spawner status
+            fromNetherPortal = nbt.getBoolean("Paper.FromNetherPortal");
             if (nbt.contains("Paper.SpawnReason")) {
                 String spawnReasonName = nbt.getString("Paper.SpawnReason");
                 try {
diff --git a/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java b/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
index 8edc7e3cf88eeebc06408a713ba6a41c9bd53e40..d2b82872f6f8c3febb6c4b6468fd39f3549b1ed8 100644
--- a/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/NetherPortalBlock.java
@@ -66,6 +66,8 @@ public class NetherPortalBlock extends Block {
 
                 if (entity != null) {
                     entity.setPortalCooldown();
+                    entity.fromNetherPortal = true; // Paper
+                    if (world.paperConfig.nerfNetherPortalPigmen) ((net.minecraft.world.entity.Mob) entity).aware = false; // Paper
                 }
             }
         }