Add WardenAngerChangeEvent (#7943)

patches/api/Add-WardenAngerChangeEvent.patch

@@ -0,0 +1,117 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: nopjar <code.nopjar@gmail.com>
+Date: Sun, 12 Jun 2022 00:56:45 +0200
+Subject: [PATCH] Add WardenAngerChangeEvent
+
+Adding a event which gets called when a warden is angered by
+another entity.
+
+diff --git a/src/main/java/io/papermc/paper/event/entity/WardenAngerChangeEvent.java b/src/main/java/io/papermc/paper/event/entity/WardenAngerChangeEvent.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/event/entity/WardenAngerChangeEvent.java
+@@ -0,0 +0,0 @@
++package io.papermc.paper.event.entity;
++
++import org.bukkit.entity.Entity;
++import org.bukkit.entity.Warden;
++import org.bukkit.event.Cancellable;
++import org.bukkit.event.HandlerList;
++import org.bukkit.event.entity.EntityEvent;
++import org.jetbrains.annotations.NotNull;
++import org.jetbrains.annotations.Nullable;
++
++/**
++ * Called when a Warden's anger level has changed due to another entity.
++ * <p>
++ * If the event is cancelled, the warden's anger level will not change.
++ */
++public class WardenAngerChangeEvent extends EntityEvent implements Cancellable {
++
++    private static final HandlerList handlers = new HandlerList();
++    private boolean cancelled;
++    private final Entity target;
++    private final int oldAnger;
++    private int newAnger;
++
++    public WardenAngerChangeEvent(@NotNull final Warden warden, @Nullable final Entity target, final int oldAnger, final int newAnger) {
++        super(warden);
++        this.target = target;
++        this.oldAnger = oldAnger;
++        this.newAnger = newAnger;
++    }
++
++    /**
++     * Gets the entity (if any) which triggered this anger update.
++     *
++     * @return triggering entity, or null
++     */
++    @Nullable
++    public Entity getTarget() {
++        return target;
++    }
++
++    /**
++     * Gets the old anger level.
++     *
++     * @return old anger level
++     * @see Warden#getAnger(Entity)
++     */
++    public int getOldAnger() {
++        return oldAnger;
++    }
++
++    /**
++     * Gets the new anger level resulting from this event.
++     *
++     * @return new anger level
++     * @see Warden#getAnger(Entity)
++     */
++    public int getNewAnger() {
++        return newAnger;
++    }
++
++    /**
++     * Sets the new anger level resulting from this event.
++     * <p>
++     * The anger of a warden is capped at 150.
++     *
++     * @param newAnger the new anger level, max 150
++     * @see Warden#setAnger(Entity, int)
++     * @throws IllegalArgumentException if newAnger is greater than 150
++     */
++    public void setNewAnger(int newAnger) {
++        if (newAnger > 150)
++            throw new IllegalArgumentException("newAnger must not be greater than 150");
++
++        this.newAnger = newAnger;
++    }
++
++    @NotNull
++    @Override
++    public Warden getEntity() {
++        return (Warden) entity;
++    }
++
++    @Override
++    public boolean isCancelled() {
++        return cancelled;
++    }
++
++    @Override
++    public void setCancelled(boolean cancelled) {
++        this.cancelled = cancelled;
++    }
++
++    @NotNull
++    @Override
++    public HandlerList getHandlers() {
++        return handlers;
++    }
++
++    @NotNull
++    public static HandlerList getHandlerList() {
++        return handlers;
++    }
++}

patches/server/Add-WardenAngerChangeEvent.patch

@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: nopjar <code.nopjar@gmail.com>
+Date: Sun, 12 Jun 2022 02:26:04 +0200
+Subject: [PATCH] Add WardenAngerChangeEvent
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/monster/warden/AngerManagement.java b/src/main/java/net/minecraft/world/entity/monster/warden/AngerManagement.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/warden/AngerManagement.java
++++ b/src/main/java/net/minecraft/world/entity/monster/warden/AngerManagement.java
+@@ -0,0 +0,0 @@ public class AngerManagement {
+     public int increaseAnger(Entity entity, int amount) {
+         boolean bl = !this.angerBySuspect.containsKey(entity);
+         int i = this.angerBySuspect.computeInt(entity, (suspect, anger) -> {
+-            return Math.min(150, (anger == null ? 0 : anger) + amount);
++            return Math.min(150, (anger == null ? 0 : anger) + amount); // Paper - diff on change
+         });
+         if (bl) {
+             int j = this.angerByUuid.removeInt(entity.getUUID());
+diff --git a/src/main/java/net/minecraft/world/entity/monster/warden/Warden.java b/src/main/java/net/minecraft/world/entity/monster/warden/Warden.java
+index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/warden/Warden.java
++++ b/src/main/java/net/minecraft/world/entity/monster/warden/Warden.java
+@@ -0,0 +0,0 @@ public class Warden extends Monster implements VibrationListener.VibrationListen
+ 
+     @Override
+     public Brain<Warden> getBrain() {
+-        return super.getBrain();
++        return (Brain<Warden>) super.getBrain(); // Paper - decompile fix
+     }
+ 
+     @Override
+@@ -0,0 +0,0 @@ public class Warden extends Monster implements VibrationListener.VibrationListen
+     @VisibleForTesting
+     public void increaseAngerAt(@Nullable Entity entity, int amount, boolean listening) {
+         if (!this.isNoAi() && this.canTargetEntity(entity)) {
++            // Paper start
++            int activeAnger = this.angerManagement.getActiveAnger(entity);
++            io.papermc.paper.event.entity.WardenAngerChangeEvent event = new io.papermc.paper.event.entity.WardenAngerChangeEvent((org.bukkit.entity.Warden) this.getBukkitEntity(), entity.getBukkitEntity(), activeAnger, Math.min(150, activeAnger + amount));
++            this.level.getCraftServer().getPluginManager().callEvent(event);
++            if (event.isCancelled()) {
++                return;
++            }
++            amount = event.getNewAnger() - activeAnger;
++            // Paper end
+             WardenAi.setDigCooldown(this);
+             boolean bl = !(this.getBrain().getMemory(MemoryModuleType.ATTACK_TARGET).orElse((LivingEntity)null) instanceof Player);
+             int i = this.angerManagement.increaseAnger(entity, amount);