From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Wed, 12 May 2021 04:30:42 -0700
Subject: [PATCH] Add EntityPortalReadyEvent


diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index ca0106627279c581550c5e86bfc9a1ee5a9d6173..a60bb065cedc9c70a4c9363d6994a9d00a5c15c9 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -3095,6 +3095,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
                 if (true && !this.isPassenger() && this.portalTime++ >= i) { // CraftBukkit
                     this.level().getProfiler().push("portal");
                     this.portalTime = i;
+                    // Paper start
+                    io.papermc.paper.event.entity.EntityPortalReadyEvent event = new io.papermc.paper.event.entity.EntityPortalReadyEvent(this.getBukkitEntity(), worldserver1 == null ? null : worldserver1.getWorld(), org.bukkit.PortalType.NETHER);
+                    if (!event.callEvent()) {
+                        this.portalTime = 0;
+                    } else {
+                        worldserver1 = event.getTargetWorld() == null ? null : ((CraftWorld) event.getTargetWorld()).getHandle();
+                    // Paper end
                     this.setPortalCooldown();
                     // CraftBukkit start
                     if (this instanceof ServerPlayer) {
@@ -3102,6 +3109,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
                     } else {
                         this.changeDimension(worldserver1);
                     }
+                    } // Paper
                     // CraftBukkit end
                     this.level().getProfiler().pop();
                 }