Implements more abilities

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

@@ -0,0 +1,58 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Dry Skin is an ability that makes the Pokémon take more damage from Fire-type moves,
+/// heal from Water-type moves, heal in rain, and take damage in harsh sunlight.
+/// This ability is commonly associated with Paras and Toxicroak.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Dry_Skin_(Ability)">Bulbapedia - Dry Skin</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "dry_skin")]
+public class DrySkin : Script
+{
+    private IPokemon? _owningPokemon;
+
+    /// <inheritdoc />
+    public override void OnAddedToParent(IScriptSource source)
+    {
+        if (source is not IPokemon pokemon)
+        {
+            throw new ArgumentException("DrySkin script must be added to a Pokemon.", nameof(source));
+        }
+        _owningPokemon = pokemon;
+    }
+
+    /// <inheritdoc />
+    public override void ChangeDamageModifier(IExecutingMove move, IPokemon target, byte hit, ref float modifier)
+    {
+        var hitType = move.GetHitData(target, hit).Type;
+        if (hitType?.Name == "fire")
+        {
+            modifier *= 1.25f;
+        }
+        else if (hitType?.Name == "water")
+        {
+            modifier = 0;
+            target.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(target));
+            target.Heal(target.MaxHealth / 4);
+        }
+    }
+
+    /// <inheritdoc />
+    public override void OnEndTurn(IBattle battle)
+    {
+        if (_owningPokemon == null)
+            return;
+        var weather = battle.WeatherName;
+        if (weather == ScriptUtils.ResolveName<Weather.Rain>())
+        {
+            _owningPokemon.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(_owningPokemon));
+            _owningPokemon.Heal(_owningPokemon.MaxHealth / 8);
+        }
+        else if (weather == ScriptUtils.ResolveName<Weather.HarshSunlight>())
+        {
+            _owningPokemon.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(_owningPokemon));
+            _owningPokemon.Damage(_owningPokemon.MaxHealth / 8, DamageSource.Weather);
+        }
+    }
+}