More abilities

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

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+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Power Construct is an ability that allows Zygarde to change form when its HP drops below half.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Power_Construct_(Ability)">Bulbapedia - Power Construct</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "power_construct")]
+public class PowerConstruct : Script
+{
+    private IPokemon? _pokemon;
+
+    /// <inheritdoc />
+    public override void OnAddedToParent(IScriptSource source)
+    {
+        if (source is not IPokemon pokemon)
+            throw new InvalidOperationException("PowerConstruct script must be attached to a Pokemon.");
+        _pokemon = pokemon;
+    }
+
+    /// <inheritdoc />
+    public override void OnEndTurn(IBattle battle)
+    {
+        if (_pokemon?.BattleData?.Battle == null)
+            return;
+        if (_pokemon.Species.Name != "zygarde")
+            return;
+        if (_pokemon.CurrentHealth > _pokemon.BoostedStats.Hp / 2)
+            return;
+        if (_pokemon.Form.Name != "10" || _pokemon.Form.Name != "50")
+            return;
+        if (!_pokemon.Species.TryGetForm("complete", out var completeForm))
+            return;
+
+        _pokemon.ChangeForm(completeForm);
+    }
+}