add curse of panic

src/main/java/me/youhavetrouble/enchantio/events/PlayerPanicEvent.java

@@ -0,0 +1,68 @@
+package me.youhavetrouble.enchantio.events;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.Cancellable;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.player.PlayerEvent;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Called when a player with the Panic enchantment takes damage and their hotbar is scrambled.
+ */
+public class PlayerPanicEvent extends PlayerEvent implements Cancellable {
+
+    private static final HandlerList HANDLERS = new HandlerList();
+
+    private boolean cancelled = false;
+    private final List<ItemStack> scrambledItems;
+
+    public PlayerPanicEvent(@NotNull Player player, @NotNull List<ItemStack> scrambledItems) {
+        super(player);
+        this.scrambledItems = scrambledItems;
+    }
+
+    /**
+     * Get the hotbar items that will be set for the player. List order will be preserved.
+     * @return The unmodifiable list of hotbar items
+     */
+    public List<ItemStack> getScrambledItems() {
+        return Collections.unmodifiableList(scrambledItems);
+    }
+
+    /**
+     * Set the new player hotbar items. List order will be preserved. List must have a size of 9.
+     * @param scrambledItems The new hotbar items
+     */
+    public void setScrambledItems(@NotNull List<ItemStack> scrambledItems) {
+        if (scrambledItems.size() != 9) {
+            throw new IllegalArgumentException("Scrambled items must have a size of 9");
+        }
+        this.scrambledItems.clear();
+        this.scrambledItems.addAll(scrambledItems);
+    }
+
+    @Override
+    public @NotNull HandlerList getHandlers() {
+        return HANDLERS;
+    }
+
+    @Override
+    public boolean isCancelled() {
+        return cancelled;
+    }
+
+    @Override
+    public void setCancelled(boolean cancel) {
+        this.cancelled = cancel;
+    }
+
+    @NotNull
+    public static HandlerList getHandlerList() {
+        return HANDLERS;
+    }
+
+}