patches/server/0771-Prevent-softlocked-end-exit-portal-generation.patch


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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Noah van der Aa <ndvdaa@gmail.com>
Date: Mon, 30 Aug 2021 15:22:18 +0200
Subject: [PATCH] Prevent softlocked end exit portal generation


diff --git a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
index 99b175625c79fe5c4d944810e3fe11be5eed997f..f8d846345c1cc3c78f9ac14635b26f2affc77190 100644
--- a/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
+++ b/src/main/java/net/minecraft/world/level/dimension/end/EndDragonFight.java
@@ -413,6 +413,11 @@ public class EndDragonFight {
             }
         }
 
+        // Paper start - Prevent "softlocked" exit portal generation
+        if (this.portalLocation.getY() <= this.level.getMinBuildHeight()) {
+            this.portalLocation = this.portalLocation.atY(this.level.getMinBuildHeight() + 1);
+        }
+        // Paper end
         endPodiumFeature.place(FeatureConfiguration.NONE, this.level, this.level.getChunkSource().getGenerator(), RandomSource.create(), this.portalLocation);
     }