Add BellRingEvent for village bells (#2230)

Spigot-API-Patches/Add-BellRingEvent.patch

@@ -0,0 +1,69 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Eearslya Sleiarion <eearslya@gmail.com>
+Date: Mon, 24 Jun 2019 21:27:39 -0700
+Subject: [PATCH] Add BellRingEvent
+
+Add a new event, BellRingEvent, to trigger whenever a player rings a
+village bell. Passes along the bell block and the player who rang it.
+
+diff --git a/src/main/java/io/papermc/paper/event/block/BellRingEvent.java b/src/main/java/io/papermc/paper/event/block/BellRingEvent.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/event/block/BellRingEvent.java
+@@ -0,0 +0,0 @@
++package io.papermc.paper.event.block;
++
++import org.bukkit.block.Block;
++import org.bukkit.entity.Entity;
++import org.bukkit.event.Cancellable;
++import org.bukkit.event.HandlerList;
++import org.bukkit.event.block.BlockEvent;
++import org.bukkit.potion.PotionEffect;
++import org.jetbrains.annotations.NotNull;
++import org.jetbrains.annotations.Nullable;
++
++/**
++ * Called when a bell is rung.
++ */
++public class BellRingEvent extends BlockEvent implements Cancellable {
++    private static final HandlerList handlers = new HandlerList();
++    private boolean cancelled;
++    private final Entity entity;
++
++    public BellRingEvent(@NotNull Block block, @Nullable Entity entity) {
++        super(block);
++        this.entity = entity;
++    }
++
++    @Override
++    public boolean isCancelled() {
++        return cancelled;
++    }
++
++    @Override
++    public void setCancelled(boolean cancelled) {
++        this.cancelled = cancelled;
++    }
++
++    /**
++     * Gets the entity that rang the bell.
++     *
++     * @return the ringer or null if none
++     */
++    @Nullable
++    public Entity getEntity() {
++        return entity;
++    }
++
++    @NotNull
++    @Override
++    public HandlerList getHandlers() {
++        return handlers;
++    }
++
++    @NotNull
++    public static HandlerList getHandlerList() {
++        return handlers;
++    }
++}

Spigot-Server-Patches/Add-BellRingEvent.patch

@@ -0,0 +1,49 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Eearslya Sleiarion <eearslya@gmail.com>
+Date: Sun, 23 Aug 2020 13:04:02 +0200
+Subject: [PATCH] Add BellRingEvent
+
+Add a new event, BellRingEvent, to trigger whenever a player rings a
+village bell. Passes along the bell block and the player who rang it.
+
+diff --git a/src/main/java/net/minecraft/server/BlockBell.java b/src/main/java/net/minecraft/server/BlockBell.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/server/BlockBell.java
++++ b/src/main/java/net/minecraft/server/BlockBell.java
+@@ -0,0 +0,0 @@
+ package net.minecraft.server;
+ 
++import io.papermc.paper.event.block.BellRingEvent;
++
+ import javax.annotation.Nullable;
+ 
+ public class BlockBell extends BlockTileEntity {
+@@ -0,0 +0,0 @@ public class BlockBell extends BlockTileEntity {
+         boolean flag1 = !flag || this.a(iblockdata, enumdirection, movingobjectpositionblock.getPos().y - (double) blockposition.getY());
+ 
+         if (flag1) {
+-            boolean flag2 = this.a(world, blockposition, enumdirection);
++            boolean flag2 = this.handleBellRing(world, blockposition, enumdirection, entityhuman); // Paper
+ 
+             if (flag2 && entityhuman != null) {
+                 entityhuman.a(StatisticList.BELL_RING);
+@@ -0,0 +0,0 @@ public class BlockBell extends BlockTileEntity {
+     }
+ 
+     public boolean a(World world, BlockPosition blockposition, @Nullable EnumDirection enumdirection) {
++        // Paper start - add ringer param
++        return this.handleBellRing(world, blockposition, enumdirection, null);
++    }
++    public boolean handleBellRing(World world, BlockPosition blockposition, @Nullable EnumDirection enumdirection, @Nullable Entity ringer) {
++        // Paper end
+         TileEntity tileentity = world.getTileEntity(blockposition);
+ 
+         if (!world.isClientSide && tileentity instanceof TileEntityBell) {
+@@ -0,0 +0,0 @@ public class BlockBell extends BlockTileEntity {
+                 enumdirection = (EnumDirection) world.getType(blockposition).get(BlockBell.a);
+             }
+ 
++            if (!new BellRingEvent(world.getWorld().getBlockAt(MCUtil.toLocation(world, blockposition)), ringer == null ? null : ringer.getBukkitEntity()).callEvent()) return false; // Paper - BellRingEvent
+             ((TileEntityBell) tileentity).a(enumdirection);
+             world.playSound((EntityHuman) null, blockposition, SoundEffects.BLOCK_BELL_USE, SoundCategory.BLOCKS, 2.0F, 1.0F);
+             return true;