From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Mon, 13 Apr 2020 07:31:44 +0100
Subject: [PATCH] Prevent opening inventories when frozen


diff --git a/src/main/java/net/minecraft/server/level/EntityPlayer.java b/src/main/java/net/minecraft/server/level/EntityPlayer.java
index 8371d5ac694f469804ad55669fdedb8b3fc627bd..320be04d9e3284d728adb2df9da7edb63e5f71d1 100644
--- a/src/main/java/net/minecraft/server/level/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/level/EntityPlayer.java
@@ -559,7 +559,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
             containerUpdateDelay = world.paperConfig.containerUpdateTickRate;
         }
         // Paper end
-        if (!this.world.isClientSide && !this.activeContainer.canUse(this)) {
+        if (!this.world.isClientSide && this.activeContainer != this.defaultContainer && (isFrozen() || !this.activeContainer.canUse(this))) { // Paper - auto close while frozen
             this.closeInventory(org.bukkit.event.inventory.InventoryCloseEvent.Reason.CANT_USE); // Paper
             this.activeContainer = this.defaultContainer;
         }
@@ -1398,7 +1398,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
             } else {
                 // CraftBukkit start
                 this.activeContainer = container;
-                this.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, container.getType(), container.getTitle()));
+                if (!isFrozen()) this.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, container.getType(), container.getTitle())); // Paper
                 // CraftBukkit end
                 container.addSlotListener(this);
                 return OptionalInt.of(this.containerCounter);
@@ -2199,7 +2199,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
     }
 
     @Override
-    protected boolean isFrozen() {
+    public boolean isFrozen() { // Paper - protected > public
         return super.isFrozen() || (this.playerConnection != null && this.playerConnection.isDisconnected()); // Paper
     }
 
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index 2ca9d061ec951fb0563959620f0e99590e3038af..35ede7760ee5f0b28f9b52443f663498f8a21c0c 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -321,7 +321,7 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
         if (adventure$title == null) adventure$title = io.papermc.paper.adventure.PaperAdventure.LEGACY_SECTION_UXRC.deserialize(container.getBukkitView().getTitle()); // Paper
 
         //player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, CraftChatMessage.fromString(title)[0])); // Paper // Paper - comment
-        player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, io.papermc.paper.adventure.PaperAdventure.asVanilla(adventure$title))); // Paper
+        if (!player.isFrozen()) player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, io.papermc.paper.adventure.PaperAdventure.asVanilla(adventure$title))); // Paper
         getHandle().activeContainer = container;
         getHandle().activeContainer.addSlotListener(player);
     }
@@ -395,7 +395,7 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
         net.kyori.adventure.text.Component adventure$title = inventory.title(); // Paper
         if (adventure$title == null) adventure$title = io.papermc.paper.adventure.PaperAdventure.LEGACY_SECTION_UXRC.deserialize(inventory.getTitle()); // Paper
         //player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, CraftChatMessage.fromString(title)[0])); // Paper - comment
-        player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, io.papermc.paper.adventure.PaperAdventure.asVanilla(adventure$title))); // Paper
+        if (!player.isFrozen()) player.playerConnection.sendPacket(new PacketPlayOutOpenWindow(container.windowId, windowType, io.papermc.paper.adventure.PaperAdventure.asVanilla(adventure$title))); // Paper
         player.activeContainer = container;
         player.activeContainer.addSlotListener(player);
     }