Paper/patches/api/0189-Add-ThrownEggHatchEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Sun, 9 Feb 2020 00:19:08 -0600
Subject: [PATCH] Add ThrownEggHatchEvent

Adds a new event similar to PlayerEggThrowEvent, but without the Player requirement
(dispensers can throw eggs to hatch them, too).

diff --git a/src/main/java/com/destroystokyo/paper/event/entity/ThrownEggHatchEvent.java b/src/main/java/com/destroystokyo/paper/event/entity/ThrownEggHatchEvent.java
new file mode 100644
index 0000000000000000000000000000000000000000..085d77dde83d6ed13eb83f23cf3e51d380187c9c
--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/event/entity/ThrownEggHatchEvent.java
@@ -0,0 +1,115 @@
+package com.destroystokyo.paper.event.entity;
+
+import org.bukkit.entity.Egg;
+import org.bukkit.entity.EntityType;
+import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Called when a thrown egg might hatch.
+ * <p>
+ * This event fires for all thrown eggs that may hatch, players, dispensers, etc.
+ */
+public class ThrownEggHatchEvent extends Event {
+    private static final HandlerList handlers = new HandlerList();
+    private final Egg egg;
+    private boolean hatching;
+    private EntityType hatchType;
+    private byte numHatches;
+
+    public ThrownEggHatchEvent(@NotNull final Egg egg, final boolean hatching, final byte numHatches, @NotNull final EntityType hatchingType) {
+        this.egg = egg;
+        this.hatching = hatching;
+        this.numHatches = numHatches;
+        this.hatchType = hatchingType;
+    }
+
+    /**
+     * Gets the egg involved in this event.
+     *
+     * @return the egg involved in this event
+     */
+    @NotNull
+    public Egg getEgg() {
+        return egg;
+    }
+
+    /**
+     * Gets whether the egg is hatching or not. Will be what the server
+     * would've done without interaction.
+     *
+     * @return boolean Whether the egg is going to hatch or not
+     */
+    public boolean isHatching() {
+        return hatching;
+    }
+
+    /**
+     * Sets whether the egg will hatch or not.
+     *
+     * @param hatching true if you want the egg to hatch, false if you want it
+     *     not to
+     */
+    public void setHatching(boolean hatching) {
+        this.hatching = hatching;
+    }
+
+    /**
+     * Get the type of the mob being hatched (EntityType.CHICKEN by default)
+     *
+     * @return The type of the mob being hatched by the egg
+     */
+    @NotNull
+    public EntityType getHatchingType() {
+        return hatchType;
+    }
+
+    /**
+     * Change the type of mob being hatched by the egg
+     *
+     * @param hatchType The type of the mob being hatched by the egg
+     */
+    public void setHatchingType(@NotNull EntityType hatchType) {
+        if (!hatchType.isSpawnable()) throw new IllegalArgumentException("Can't spawn that entity type from an egg!");
+        this.hatchType = hatchType;
+    }
+
+    /**
+     * Get the number of mob hatches from the egg. By default the number will
+     * be the number the server would've done
+     * <ul>
+     * <li>7/8 chance of being 0
+     * <li>31/256 ~= 1/8 chance to be 1
+     * <li>1/256 chance to be 4
+     * </ul>
+     *
+     * @return The number of mobs going to be hatched by the egg
+     */
+    public byte getNumHatches() {
+        return numHatches;
+    }
+
+    /**
+     * Change the number of mobs coming out of the hatched egg
+     * <p>
+     * The boolean hatching will override this number. Ie. If hatching =
+     * false, this number will not matter
+     *
+     * @param numHatches The number of mobs coming out of the egg
+     */
+    public void setNumHatches(byte numHatches) {
+        this.numHatches = numHatches;
+    }
+
+    @NotNull
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}