More abilities

Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Frisk.cs

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+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Frisk is an ability that reveals the held items of opposing Pokémon when the Pokémon enters battle.
+/// This ability is commonly associated with Banette and Gothitelle.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Frisk_(Ability)">Bulbapedia - Frisk</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "frisk")]
+public class Frisk : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        if (pokemon.BattleData?.BattleSide is null)
+            return;
+
+        // Check if the Pokémon has an opposing side
+        var opposingSide =
+            pokemon.BattleData.Battle.Sides.FirstOrDefault(side => side != pokemon.BattleData.BattleSide);
+        if (opposingSide is null)
+            return;
+
+        EventBatchId batchId = new();
+        // Iterate through the opposing Pokémon
+        foreach (var opponent in opposingSide.Pokemon.WhereNotNull())
+        {
+            // If the opponent has a held item, reveal it
+            if (opponent.HeldItem != null)
+            {
+                pokemon.BattleData.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon)
+                {
+                    Metadata = new Dictionary<StringKey, object?>
+                    {
+                        { "opponent", opponent },
+                        { "held_item", opponent.HeldItem },
+                    },
+                    BatchId = batchId,
+                });
+            }
+        }
+    }
+}