Include DifficultyChangeEvent.

Author: kitlith

patchwork-events-world/src/main/java/net/minecraftforge/event/DifficultyChangeEvent.java

@@ -0,0 +1,54 @@
+/*
+ * Minecraft Forge, Patchwork Project
+ * Copyright (c) 2016-2020, 2019-2020
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+package net.minecraftforge.event;
+
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.eventbus.api.Event;
+
+import net.minecraft.world.Difficulty;
+
+/**
+ * DifficultyChangeEvent is fired when difficulty is changing.
+ *
+ * <p>TODO: Forge bug: This event is not currently fired. See https://github.com/MinecraftForge/MinecraftForge/issues/6227</p>
+ *
+ * <p>This event is not cancellable.</p>
+ *
+ * <p>This event does not have a result.</p>
+ *
+ * <p>This event is fired on the {@link MinecraftForge#EVENT_BUS}.</p>
+ */
+public class DifficultyChangeEvent extends Event {
+	private final Difficulty difficulty;
+	private final Difficulty oldDifficulty;
+
+	public DifficultyChangeEvent(Difficulty difficulty, Difficulty oldDifficulty) {
+		this.difficulty = difficulty;
+		this.oldDifficulty = oldDifficulty;
+	}
+
+	public Difficulty getDifficulty() {
+		return difficulty;
+	}
+
+	public Difficulty getOldDifficulty() {
+		return oldDifficulty;
+	}
+}