From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Thu, 14 Jan 2021 16:48:10 -0600
Subject: [PATCH] Fix stuck in portals


diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
index 976dfffac3895015d0eb00bab0ea93f9e5cc27a2..430ea84cbca69b6d119c2739bed9de37a970c2e5 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
@@ -1687,6 +1687,7 @@ public class ServerPlayer extends net.minecraft.world.entity.player.Player imple
                 worldserver1.removePlayerImmediately(this, Entity.RemovalReason.CHANGED_DIMENSION);
                 this.unsetRemoved();
                 // CraftBukkit end
+                this.portalPos = io.papermc.paper.util.MCUtil.toBlockPosition(exit); // Purpur - Fix stuck in portals
                 this.setServerLevel(worldserver);
                 this.connection.internalTeleport(PositionMoveRotation.of(teleportTarget), teleportTarget.relatives()); // CraftBukkit - use internal teleport without event
                 this.connection.resetPosition();
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 106dadefc463ba1f59e89e9c5d1386b0eda40d48..93468974af35aa2f4f72d80b72aabe2dc8519f9e 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -3470,14 +3470,17 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
         return Vec3.directionFromRotation(this.getRotationVector());
     }
 
+    public BlockPos portalPos = BlockPos.ZERO; // Purpur
     public void setAsInsidePortal(Portal portal, BlockPos pos) {
         if (this.isOnPortalCooldown()) {
+            if (!(level().purpurConfig.playerFixStuckPortal && this instanceof Player && !pos.equals(this.portalPos))) // Purpur - Fix stuck in portals
             this.setPortalCooldown();
         } else if (this.level.purpurConfig.entitiesCanUsePortals || this instanceof ServerPlayer) { // Purpur - Entities can use portals
             if (this.portalProcess != null && this.portalProcess.isSamePortal(portal)) {
                 if (!this.portalProcess.isInsidePortalThisTick()) {
                     this.portalProcess.updateEntryPosition(pos.immutable());
                     this.portalProcess.setAsInsidePortalThisTick(true);
+                    this.portalPos = BlockPos.ZERO; // Purpur - Fix stuck in portals
                 }
             } else {
                 this.portalProcess = new PortalProcessor(portal, pos.immutable());
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index c51747bf291561359b028500652e556f677a0aa0..0347b0d83a9824a355bdcaaaf36f98fd6828effd 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -327,6 +327,7 @@ public class PurpurWorldConfig {
     public int playerDeathExpDropMax = 100;
     public boolean teleportIfOutsideBorder = false;
     public boolean totemOfUndyingWorksInInventory = false;
+    public boolean playerFixStuckPortal = false;
     private void playerSettings() {
         if (PurpurConfig.version < 19) {
             boolean oldVal = getBoolean("gameplay-mechanics.player.idle-timeout.mods-target", idleTimeoutTargetPlayer);
@@ -342,6 +343,7 @@ public class PurpurWorldConfig {
         playerDeathExpDropMax = getInt("gameplay-mechanics.player.exp-dropped-on-death.maximum", playerDeathExpDropMax);
         teleportIfOutsideBorder = getBoolean("gameplay-mechanics.player.teleport-if-outside-border", teleportIfOutsideBorder);
         totemOfUndyingWorksInInventory = getBoolean("gameplay-mechanics.player.totem-of-undying-works-in-inventory", totemOfUndyingWorksInInventory);
+        playerFixStuckPortal = getBoolean("gameplay-mechanics.player.fix-stuck-in-portal", playerFixStuckPortal);
     }
 
     public boolean silkTouchEnabled = false;