From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sat, 21 May 2022 20:59:45 -0700
Subject: [PATCH] Add BlockLockCheckEvent


diff --git a/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
index bf9ae460bdfb247456b895f026f6a7a2e162c5f5..15fd1fe1b55b6421d2c09e8385c9f69fa0152e56 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
@@ -73,17 +73,44 @@ public abstract class BaseContainerBlockEntity extends BlockEntity implements Co
     protected abstract Component getDefaultName();
 
     public boolean canOpen(Player player) {
-        return BaseContainerBlockEntity.canUnlock(player, this.lockKey, this.getDisplayName());
+        return BaseContainerBlockEntity.canUnlock(player, this.lockKey, this.getDisplayName(), this); // Paper - Add BlockLockCheckEvent
     }
 
+    @Deprecated @io.papermc.paper.annotation.DoNotUse // Paper - Add BlockLockCheckEvent
     public static boolean canUnlock(Player player, LockCode lock, Component containerName) {
+        // Paper start - Add BlockLockCheckEvent
+        return canUnlock(player, lock, containerName, null);
+    }
+    public static boolean canUnlock(Player player, LockCode lock, Component containerName, @Nullable BlockEntity blockEntity) {
+        if (player instanceof net.minecraft.server.level.ServerPlayer serverPlayer && blockEntity != null && blockEntity.getLevel() != null && blockEntity.getLevel().getBlockEntity(blockEntity.getBlockPos()) == blockEntity) {
+            final org.bukkit.block.Block block = org.bukkit.craftbukkit.block.CraftBlock.at(blockEntity.getLevel(), blockEntity.getBlockPos());
+            net.kyori.adventure.text.Component lockedMessage = net.kyori.adventure.text.Component.translatable("container.isLocked", io.papermc.paper.adventure.PaperAdventure.asAdventure(containerName));
+            net.kyori.adventure.sound.Sound lockedSound = net.kyori.adventure.sound.Sound.sound(org.bukkit.Sound.BLOCK_CHEST_LOCKED, net.kyori.adventure.sound.Sound.Source.BLOCK, 1.0F, 1.0F);
+            final io.papermc.paper.event.block.BlockLockCheckEvent event = new io.papermc.paper.event.block.BlockLockCheckEvent(block, (io.papermc.paper.block.LockableTileState) block.getState(), serverPlayer.getBukkitEntity(), lockedMessage, lockedSound);
+            event.callEvent();
+            if (event.getResult() == org.bukkit.event.Event.Result.ALLOW) {
+                return true;
+            } else if (event.getResult() == org.bukkit.event.Event.Result.DENY || (!player.isSpectator() && !lock.unlocksWith(event.isUsingCustomKeyItemStack() ? org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(event.getKeyItem()) : player.getMainHandItem()))) {
+                if (event.getLockedMessage() != null) {
+                    event.getPlayer().sendActionBar(event.getLockedMessage());
+                }
+                if (event.getLockedSound() != null) {
+                    event.getPlayer().playSound(event.getLockedSound());
+                }
+                return false;
+            } else {
+                return true;
+            }
+        } else { // logic below is replaced by logic above
+        // Paper end - Add BlockLockCheckEvent
         if (!player.isSpectator() && !lock.unlocksWith(player.getMainHandItem())) {
-            player.displayClientMessage(Component.translatable("container.isLocked", containerName), true);
+            player.displayClientMessage(Component.translatable("container.isLocked", containerName), true); // Paper - diff on change
             player.playNotifySound(SoundEvents.CHEST_LOCKED, SoundSource.BLOCKS, 1.0F, 1.0F);
             return false;
         } else {
             return true;
         }
+        } // Paper - Add BlockLockCheckEvent
     }
 
     protected abstract NonNullList<ItemStack> getItems();
diff --git a/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
index f8d432ef21e59796da4b11c9748ba151c54e5e04..b6633ca1ee73ef0f8a220992a2e0424e67dd9758 100644
--- a/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
@@ -472,7 +472,7 @@ public class BeaconBlockEntity extends BlockEntity implements MenuProvider, Name
     @Nullable
     @Override
     public AbstractContainerMenu createMenu(int syncId, Inventory playerInventory, Player player) {
-        return BaseContainerBlockEntity.canUnlock(player, this.lockKey, this.getDisplayName()) ? new BeaconMenu(syncId, playerInventory, this.dataAccess, ContainerLevelAccess.create(this.level, this.getBlockPos())) : null;
+        return BaseContainerBlockEntity.canUnlock(player, this.lockKey, this.getDisplayName(), this) ? new BeaconMenu(syncId, playerInventory, this.dataAccess, ContainerLevelAccess.create(this.level, this.getBlockPos())) : null; // Paper - Add BlockLockCheckEvent
     }
 
     @Override