SPIGOT-5735: Add EntityEnterLoveModeEvent

By: DiamondDagger590 <diamonddagger590@gmail.com>

paper-api/src/main/java/org/bukkit/event/entity/EntityEnterLoveModeEvent.java

@@ -0,0 +1,90 @@
+package org.bukkit.event.entity;
+
+import org.bukkit.entity.Animals;
+import org.bukkit.entity.HumanEntity;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Called when an entity enters love mode.
+ * <br>
+ * This can be cancelled but the item will still be consumed that was used to
+ * make the entity enter into love mode.
+ */
+public class EntityEnterLoveModeEvent extends EntityEvent implements Cancellable {
+
+    private static final HandlerList handlers = new HandlerList();
+    private boolean cancel;
+    private final HumanEntity humanEntity;
+    private int ticksInLove;
+
+    public EntityEnterLoveModeEvent(@NotNull Animals animalInLove, @Nullable HumanEntity humanEntity, int ticksInLove) {
+        super(animalInLove);
+        this.humanEntity = humanEntity;
+        this.ticksInLove = ticksInLove;
+    }
+
+    /**
+     * Gets the animal that is entering love mode.
+     *
+     * @return The animal that is entering love mode
+     */
+    @NotNull
+    @Override
+    public Animals getEntity() {
+        return (Animals) entity;
+    }
+
+    /**
+     * Gets the Human Entity that caused the animal to enter love mode.
+     *
+     * @return The Human entity that caused the animal to enter love mode, or
+     * null if there wasn't one.
+     */
+    @Nullable
+    public HumanEntity getHumanEntity() {
+        return humanEntity;
+    }
+
+    /**
+     * Gets the amount of ticks that the animal will fall in love for.
+     *
+     * @return The amount of ticks that the animal will fall in love for
+     */
+    public int getTicksInLove() {
+        return ticksInLove;
+    }
+
+    /**
+     * Sets the amount of ticks that the animal will fall in love for.
+     *
+     * @param ticksInLove The amount of ticks that the animal will fall in love
+     * for
+     */
+    public void setTicksInLove(int ticksInLove) {
+        this.ticksInLove = ticksInLove;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancel;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        this.cancel = cancel;
+    }
+
+    @NotNull
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
+}