Add PreExplodeEvents (#1234)

patches/api/0053-Add-PreExplodeEvents.patch

@@ -0,0 +1,134 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: SageSphinx63920 <sage@sagesphinx63920.dev>
+Date: Mon, 26 Dec 2022 23:40:13 +0100
+Subject: [PATCH] Add PreExplodeEvents
+
+
+diff --git a/src/main/java/org/purpurmc/purpur/event/PreBlockExplodeEvent.java b/src/main/java/org/purpurmc/purpur/event/PreBlockExplodeEvent.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..b7db0db7f3afbccdb07390d1bcada109e9e6b30b
+--- /dev/null
++++ b/src/main/java/org/purpurmc/purpur/event/PreBlockExplodeEvent.java
+@@ -0,0 +1,52 @@
++package org.purpurmc.purpur.event;
++
++import org.bukkit.block.Block;
++import org.bukkit.event.Cancellable;
++import org.bukkit.event.HandlerList;
++import org.bukkit.event.block.BlockExplodeEvent;
++import org.jetbrains.annotations.NotNull;
++import java.util.Collections;
++
++/**
++ * Called before a block's explosion is processed
++ */
++public class PreBlockExplodeEvent extends BlockExplodeEvent implements Cancellable {
++    private static final HandlerList handlers = new HandlerList();
++    private boolean cancelled;
++    private final float yield;
++
++    public PreBlockExplodeEvent(@NotNull final Block what, final float yield) {
++        super(what, Collections.emptyList(), yield);
++        this.yield = yield;
++        this.cancelled = false;
++    }
++
++    /**
++     * Returns the percentage of blocks to drop from this explosion
++     *
++     * @return The yield.
++     */
++    public float getYield() {
++        return yield;
++    }
++
++    @Override
++    public boolean isCancelled() {
++        return this.cancelled;
++    }
++
++    @Override
++    public void setCancelled(boolean cancel) {
++        this.cancelled = cancel;
++    }
++
++    @Override
++    public @NotNull HandlerList getHandlers() {
++        return handlers;
++    }
++
++    @NotNull
++    public static HandlerList getHandlerList() {
++        return handlers;
++    }
++}
+diff --git a/src/main/java/org/purpurmc/purpur/event/entity/PreEntityExplodeEvent.java b/src/main/java/org/purpurmc/purpur/event/entity/PreEntityExplodeEvent.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..2d4f68228861492baaea0bcc604dfef623b337ba
+--- /dev/null
++++ b/src/main/java/org/purpurmc/purpur/event/entity/PreEntityExplodeEvent.java
+@@ -0,0 +1,64 @@
++package org.purpurmc.purpur.event.entity;
++
++import org.bukkit.Location;
++import org.bukkit.event.Cancellable;
++import org.bukkit.event.HandlerList;
++import org.bukkit.event.entity.EntityExplodeEvent;
++import org.jetbrains.annotations.NotNull;
++import java.util.Collections;
++
++/**
++ * Called before an entity's explosion is processed
++ */
++public class PreEntityExplodeEvent extends EntityExplodeEvent implements Cancellable {
++    private static final HandlerList handlers = new HandlerList();
++    private boolean cancelled;
++    private final float yield;
++    private final Location location;
++
++    public PreEntityExplodeEvent(@NotNull org.bukkit.entity.Entity what, @NotNull final Location location, final float yield) {
++        super(what, location, Collections.emptyList(), yield);
++        this.cancelled = false;
++        this.yield = yield;
++        this.location = location;
++    }
++
++    /**
++     * Returns the percentage of blocks to drop from this explosion
++     *
++     * @return The yield.
++     */
++    public float getYield() {
++        return yield;
++    }
++
++    /**
++     * Returns the location where the explosion happened.
++     *
++     * @return The location of the explosion
++     */
++    @NotNull
++    public Location getLocation() {
++        return location;
++    }
++
++    @Override
++    public boolean isCancelled() {
++        return this.cancelled;
++    }
++
++    @Override
++    public void setCancelled(boolean cancel) {
++        this.cancelled = cancel;
++    }
++
++    @Override
++    public @NotNull HandlerList getHandlers() {
++        return handlers;
++    }
++
++    @NotNull
++    public static HandlerList getHandlerList() {
++        return handlers;
++    }
++}

patches/server/0310-Add-PreExplodeEvents.patch

@@ -0,0 +1,34 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: SageSphinx63920 <sage@sagesphinx63920.dev>
+Date: Mon, 26 Dec 2022 23:42:37 +0100
+Subject: [PATCH] Add PreExplodeEvents
+
+
+diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
+index 3c9e0cee78deeae6b47a186f1bfc47f3956ec9c7..cd63170e56b402fbf8bbd904270979fa51330e26 100644
+--- a/src/main/java/net/minecraft/world/level/Explosion.java
++++ b/src/main/java/net/minecraft/world/level/Explosion.java
+@@ -141,6 +141,23 @@ public class Explosion {
+             return;
+         }
+         // CraftBukkit end
++
++        // Purpur start - add PreExplodeEvents
++        if(this.source != null){
++            Location location = new Location(this.level.getWorld(), this.x, this.y, this.z);
++            if(!new org.purpurmc.purpur.event.entity.PreEntityExplodeEvent(this.source.getBukkitEntity(), location, this.blockInteraction == Explosion.BlockInteraction.DESTROY_WITH_DECAY ? 1.0F / this.radius : 1.0F).callEvent()) {
++                this.wasCanceled = true;
++                return;
++            }
++        }else {
++            Location location = new Location(this.level.getWorld(), this.x, this.y, this.z);
++            if(!new org.purpurmc.purpur.event.PreBlockExplodeEvent(location.getBlock(), this.blockInteraction == Explosion.BlockInteraction.DESTROY_WITH_DECAY ? 1.0F / this.radius : 1.0F).callEvent()) {
++                this.wasCanceled = true;
++                return;
++            }
++        }
++        //Purpur end
++
+         this.level.gameEvent(this.source, GameEvent.EXPLODE, new Vec3(this.x, this.y, this.z));
+         Set<BlockPos> set = Sets.newHashSet();
+         boolean flag = true;