More abilities

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

@@ -0,0 +1,15 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+[Script(ScriptCategory.Ability, "cheek_pouch")]
+public class CheekPouch : Script
+{
+    /// <inheritdoc />
+    public override void OnAfterItemConsume(IPokemon pokemon, IItem item)
+    {
+        if (item.Category == ItemCategory.Berry)
+        {
+            pokemon.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon));
+            pokemon.Heal(pokemon.MaxHealth / 3);
+        }
+    }
+}

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

@@ -0,0 +1,16 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+[Script(ScriptCategory.Ability, "color_change")]
+public class ColorChange : Script
+{
+    /// <inheritdoc />
+    public override void OnIncomingHit(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var hitData = move.GetHitData(target, hit);
+        if (hitData.Type != null && (hitData.Type != target.Types.FirstOrDefault() || target.Types.Count > 1))
+        {
+            target.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(target));
+            target.SetTypes([hitData.Type.Value]);
+        }
+    }
+}

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

@@ -5,26 +5,37 @@ namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
 [Script(ScriptCategory.Ability, "prevent_stat_lowering")]
 public class PreventStatLowering : Script
 {
-    private Statistic _statistic;
+    /// <summary>
+    /// The statistic that this ability prevents from being lowered.
+    /// Null means it prevents all stat lowering.
+    /// </summary>
+    private Statistic? _statistic;
 
     /// <inheritdoc />
     public override void OnInitialize(IReadOnlyDictionary<StringKey, object?>? parameters)
     {
         if (parameters is null)
             throw new ArgumentNullException(nameof(parameters), "Parameters cannot be null.");
-        if (!parameters.TryGetValue("stat", out var statObj) || statObj is not string statStr)
-            throw new ArgumentException("Parameter 'stat' is required and must be a string.", nameof(parameters));
-        if (!Enum.TryParse(statStr, true, out Statistic stat))
-            throw new ArgumentException($"Invalid statistic '{statStr}' provided.", nameof(statStr));
-
-        _statistic = stat;
+        if (parameters.TryGetValue("stat", out var statObj) && statObj is string statStr)
+        {
+            if (!Enum.TryParse(statStr, true, out Statistic stat))
+                throw new ArgumentException($"Invalid statistic '{statStr}' provided.", nameof(statStr));
+            _statistic = stat;
+        }
     }
 
     /// <inheritdoc />
     public override void PreventStatBoostChange(IPokemon target, Statistic stat, sbyte amount, bool selfInflicted,
         ref bool prevent)
     {
+        if (_statistic is not null && _statistic != stat)
+            return;
+        if (amount >= 0)
+            return;
         if (!selfInflicted)
-            prevent = false;
+        {
+            target.BattleData?.Battle.EventHook.Invoke(new AbilityTriggerEvent(target));
+            prevent = true;
+        }
     }
 }

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

@@ -0,0 +1,41 @@
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+[Script(ScriptCategory.Ability, "speed_modifier_in_weather")]
+public class SpeedModifierInWeather : Script
+{
+    private StringKey _weather;
+    private float _modifier;
+
+    /// <inheritdoc />
+    public override void OnInitialize(IReadOnlyDictionary<StringKey, object?>? parameters)
+    {
+        if (parameters is null)
+            throw new ArgumentNullException(nameof(parameters));
+
+        if (!parameters.TryGetValue("weather", out var weatherObj) || weatherObj is not string weatherStr)
+            throw new ArgumentException("Parameter 'weather' is required and must be a string.", nameof(parameters));
+        if (!parameters.TryGetValue("modifier", out var modifierObj))
+            throw new ArgumentException("Parameter 'modifier' is required", nameof(parameters));
+        if (modifierObj is not float modifier && modifierObj is not int)
+            throw new ArgumentException("Parameter 'modifier' must be a float or int.", nameof(parameters));
+        var weatherModifier = modifierObj is float modFloat ? modFloat : (int)modifierObj;
+
+        _weather = weatherStr;
+        _modifier = weatherModifier;
+    }
+
+    /// <inheritdoc />
+    public override void ChangeSpeed(ITurnChoice choice, ref uint speed)
+    {
+        var battle = choice.User.BattleData?.Battle;
+        if (battle is null)
+            return;
+        var weather = battle.WeatherName;
+        if (weather == _weather)
+        {
+            speed = speed.MultiplyOrMax(_modifier);
+        }
+    }
+}