From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 11 Feb 2018 10:43:46 +0000
Subject: [PATCH] Extend Player Interact cancellation

GUIs are opened on the client, meaning that the server cannot block them from opening,
However, it is possible to close these GUIs from the server.

Flower pots are also not updated on the client when interaction is cancelled, this patch
also resolves this.

Update adjacent blocks of doors, double plants, pistons and beds
when cancelling interaction.

diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index 9d303a962950c7464d1d4a2a0ce3f658628cc785..a67b7c82236d448bf10c257ab0a10476372ce89c 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -178,6 +178,11 @@ public class ServerPlayerGameMode {
                 PlayerInteractEvent event = CraftEventFactory.callPlayerInteractEvent(this.player, Action.LEFT_CLICK_BLOCK, pos, direction, this.player.getInventory().getSelected(), InteractionHand.MAIN_HAND);
                 if (event.isCancelled()) {
                     // Let the client know the block still exists
+                    // Paper start - brute force neighbor blocks for any attached blocks
+                    for (Direction dir : Direction.values()) {
+                        this.player.connection.send(new ClientboundBlockUpdatePacket(level, pos.relative(dir)));
+                    }
+                    // Paper end
                     this.player.connection.send(new ClientboundBlockUpdatePacket(this.level, pos));
                     // Update any tile entity data for this block
                     BlockEntity tileentity = this.level.getBlockEntity(pos);
@@ -493,7 +498,13 @@ public class ServerPlayerGameMode {
 
                 // send a correcting update to the client for the block above as well, this because of replaceable blocks (such as grass, sea grass etc)
                 player.connection.send(new ClientboundBlockUpdatePacket(world, blockposition.above()));
+            // Paper start  - extend Player Interact cancellation // TODO: consider merging this into the extracted method
+            } else if (iblockdata.getBlock() instanceof net.minecraft.world.level.block.StructureBlock) {
+                player.connection.send(new net.minecraft.network.protocol.game.ClientboundContainerClosePacket(this.player.containerMenu.containerId));
+            } else if (iblockdata.getBlock() instanceof net.minecraft.world.level.block.CommandBlock) {
+                player.connection.send(new net.minecraft.network.protocol.game.ClientboundContainerClosePacket(this.player.containerMenu.containerId));
             }
+            // Paper end - extend Player Interact cancellation
             player.getBukkitEntity().updateInventory(); // SPIGOT-2867
             enuminteractionresult = (event.useItemInHand() != Event.Result.ALLOW) ? InteractionResult.SUCCESS : InteractionResult.PASS;
         } else if (this.gameModeForPlayer == GameType.SPECTATOR) {