Implements more abilities

PkmnLib.Dynamic/Events/Handling/EventBatchId.cs

@@ -8,16 +8,10 @@ namespace PkmnLib.Dynamic.Events;
 /// For example, when a Pokemon gets hurt by poison, we want to show the purple poison animation and the damage at the
 /// same time. This is done by batching the events together.
 /// </remarks>
-public readonly record struct EventBatchId
+public readonly record struct EventBatchId()
 {
-    /// <inheritdoc cref="EventBatchId"/>
-    public EventBatchId()
-    {
-        Id = Guid.NewGuid();
-    }
-
     /// <summary>
     /// The unique identifier for this batch of events.
     /// </summary>
-    public Guid Id { get; init; }
+    public Guid Id { get; init; } = Guid.NewGuid();
 }

PkmnLib.Dynamic/Events/StatusChangeEvent.cs

@@ -0,0 +1,36 @@
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Dynamic.Events;
+
+/// <summary>
+/// Represents an event that occurs when a Pokémon's status changes.
+/// </summary>
+public record StatusChangeEvent : IEventData
+{
+    /// <inheritdoc cref="StatusChangeEvent"/>
+    public StatusChangeEvent(IPokemon pokemon, StringKey? previousStatus, StringKey? newStatus)
+    {
+        Pokemon = pokemon;
+        PreviousStatus = previousStatus;
+        NewStatus = newStatus;
+    }
+
+    /// <summary>
+    /// The Pokémon whose status has changed.
+    /// </summary>
+    public IPokemon Pokemon { get; }
+
+    /// <summary>
+    /// The new status of the Pokémon after the change.
+    /// </summary>
+    public StringKey? NewStatus { get; }
+
+    /// <summary>
+    /// The previous status of the Pokémon before the change.
+    /// </summary>
+    public StringKey? PreviousStatus { get; }
+
+    /// <inheritdoc />
+    public EventBatchId BatchId { get; init; }
+}

PkmnLib.Dynamic/Events/TerrainChangeEvent.cs

@@ -0,0 +1,18 @@
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Dynamic.Events;
+
+public class TerrainChangeEvent : IEventData
+{
+    public StringKey? OldTerrain { get; }
+    public StringKey? NewTerrain { get; }
+
+    public TerrainChangeEvent(StringKey? oldTerrain, StringKey? newTerrain)
+    {
+        OldTerrain = oldTerrain;
+        NewTerrain = newTerrain;
+    }
+
+    /// <inheritdoc />
+    public EventBatchId BatchId { get; init; }
+}

PkmnLib.Dynamic/Events/WeatherChangeEvent.cs

@@ -0,0 +1,18 @@
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Dynamic.Events;
+
+public class WeatherChangeEvent : IEventData
+{
+    public StringKey? OldWeather { get; }
+    public StringKey? NewWeather { get; }
+
+    public WeatherChangeEvent(StringKey? oldWeather, StringKey? newWeather)
+    {
+        OldWeather = oldWeather;
+        NewWeather = newWeather;
+    }
+
+    /// <inheritdoc />
+    public EventBatchId BatchId { get; init; }
+}

PkmnLib.Dynamic/Libraries/DataLoaders/Models/SerializedSpecies.cs

@@ -106,6 +106,11 @@ public class SerializedForm
     /// <inheritdoc cref="PkmnLib.Static.Species.IForm.Flags"/>
     public string[] Flags { get; set; } = [];
 
+    /// <summary>
+    /// Check if the form is a battle-only form, meaning it should return to its original form after the battle ends.
+    /// </summary>
+    public bool IsBattleOnly { get; set; }
+
     /// <summary>
     /// Additional data that is not part of the standard form data.
     /// </summary>

PkmnLib.Dynamic/Libraries/DataLoaders/SpeciesDataLoader.cs

@@ -108,7 +108,7 @@ public static class SpeciesDataLoader
         return new FormImpl(name, form.Height, form.Weight, form.BaseExp, types, DeserializeStats(form.BaseStats),
             form.Abilities.Select(x => new StringKey(x)).ToList(),
             form.HiddenAbilities.Select(x => new StringKey(x)).ToList(), DeserializeMoves(form.Moves),
-            form.Flags.Select(x => new StringKey(x)).ToImmutableHashSet());
+            form.Flags.Select(x => new StringKey(x)).ToImmutableHashSet(), form.IsBattleOnly || form.IsMega);
     }
 
     private static ILearnableMoves DeserializeMoves(SerializedMoves moves)

PkmnLib.Dynamic/Models/Battle.cs

@@ -13,7 +13,7 @@ namespace PkmnLib.Dynamic.Models;
 /// A battle is a representation of a battle in the Pokemon games. It contains all the information needed
 /// to simulate a battle, and can be used to simulate a battle between two parties.
 /// </summary>
-public interface IBattle : IScriptSource, IDeepCloneable
+public interface IBattle : IScriptSource, IDeepCloneable, IDisposable
 {
     /// <summary>
     /// The library the battle uses for handling.
@@ -40,6 +40,12 @@ public interface IBattle : IScriptSource, IDeepCloneable
     /// </summary>
     byte PositionsPerSide { get; }
 
+    /// <summary>
+    /// Whether this battle is a wild battle. In a wild battle, the player can catch the opposing Pokemon,
+    /// and moves like roar will end the battle instead of switching out the Pokemon.
+    /// </summary>
+    bool IsWildBattle { get; }
+
     /// <summary>
     /// A list of all sides in the battle.
     /// </summary>
@@ -93,6 +99,11 @@ public interface IBattle : IScriptSource, IDeepCloneable
     /// </summary>
     void ValidateBattleState();
 
+    /// <summary>
+    /// Forcefully ends the battle. This will set the result to inconclusive and set HasEnded to true.
+    /// </summary>
+    void ForceEndBattle();
+
     /// <summary>
     /// Checks whether a Pokemon has a forced turn choice. If it does, this returns true and the choice
     /// is set in the out parameter. If it does not, this returns false and the out parameter is null.
@@ -119,7 +130,7 @@ public interface IBattle : IScriptSource, IDeepCloneable
     /// A duration can be passed to set the duration of the weather in turns. This duration can be modified by
     /// other scripts before the weather is set through the <see cref="Script.ChangeWeatherDuration"/> script hook.
     /// </summary>
-    bool SetWeather(StringKey? weatherName, int duration);
+    bool SetWeather(StringKey? weatherName, int duration, EventBatchId batchId = default);
 
     /// <summary>
     /// Volatile scripts are scripts that are not permanent and can be removed by other scripts.
@@ -134,8 +145,7 @@ public interface IBattle : IScriptSource, IDeepCloneable
     /// <summary>
     /// Sets the current terrain for the battle. If null is passed, this clears the terrain.
     /// </summary>
-    /// <param name="terrainName"></param>
+    void SetTerrain(StringKey? terrainName, EventBatchId batchId = default);
-    void SetTerrain(StringKey? terrainName);
 
     /// <summary>
     /// Gets the current terrain of the battle. If no terrain is present, this returns null.
@@ -165,13 +175,14 @@ public class BattleImpl : ScriptSource, IBattle
     /// <param name="positionsPerSide">The number of spots there are on each side for Pokémon. 1 for singles, 2 for doubles, etc.</param>
     /// <param name="randomSeed">The seed for the RNG. If null, this uses a time-dependent seed.</param>
     public BattleImpl(IDynamicLibrary library, IReadOnlyList<IBattleParty> parties, bool canFlee, byte numberOfSides,
-        byte positionsPerSide, int? randomSeed = null)
+        byte positionsPerSide, bool isWildBattle, int? randomSeed = null)
     {
         Library = library;
         Parties = parties;
         CanFlee = canFlee;
         NumberOfSides = numberOfSides;
         PositionsPerSide = positionsPerSide;
+        IsWildBattle = isWildBattle;
         Volatile = new ScriptSet(this);
         var sides = new IBattleSide[numberOfSides];
         for (byte i = 0; i < numberOfSides; i++)
@@ -196,6 +207,9 @@ public class BattleImpl : ScriptSource, IBattle
     /// <inheritdoc />
     public byte PositionsPerSide { get; }
 
+    /// <inheritdoc />
+    public bool IsWildBattle { get; }
+
     /// <inheritdoc />
     public IReadOnlyList<IBattleSide> Sides { get; }
 
@@ -263,6 +277,13 @@ public class BattleImpl : ScriptSource, IBattle
         HasEnded = true;
     }
 
+    /// <inheritdoc />
+    public void ForceEndBattle()
+    {
+        HasEnded = true;
+        Result = BattleResult.Inconclusive;
+    }
+
     /// <inheritdoc />
     public bool HasForcedTurn(IPokemon pokemon, [NotNullWhen(true)] out ITurnChoice? choice)
     {
@@ -376,10 +397,28 @@ public class BattleImpl : ScriptSource, IBattle
     public IReadOnlyScriptContainer WeatherScript => _weatherScript;
 
     /// <inheritdoc />
-    public bool SetWeather(StringKey? weatherName, int duration)
+    public bool SetWeather(StringKey? weatherName, int duration, EventBatchId batchId = default)
     {
+        var preventWeatherChange = false;
+        this.RunScriptHook(x => x.PreventWeatherChange(weatherName, ref preventWeatherChange));
+        if (preventWeatherChange)
+            return false;
+
+        var oldWeatherName = WeatherScript.Script?.Name;
         if (weatherName.HasValue)
         {
+            if (weatherName == oldWeatherName)
+            {
+                // Extend duration of existing weather
+                if (_weatherScript.Script is ILimitedTurnsScript existingWeatherScript)
+                {
+                    this.RunScriptHook(x => x.ChangeWeatherDuration(weatherName.Value, ref duration));
+                    if (duration < existingWeatherScript.TurnsRemaining)
+                        return true;
+                    existingWeatherScript.SetTurns(duration);
+                }
+                return true;
+            }
             if (!Library.ScriptResolver.TryResolve(ScriptCategory.Weather, weatherName.Value, null, out var script))
                 throw new InvalidOperationException($"Weather script {weatherName} not found.");
 
@@ -396,8 +435,13 @@ public class BattleImpl : ScriptSource, IBattle
         {
             _weatherScript.Clear();
         }
+        EventHook.Invoke(new WeatherChangeEvent(oldWeatherName, weatherName)
+        {
+            BatchId = batchId,
+        });
+        Sides.SelectMany(x => x.Pokemon).WhereNotNull()
+            .RunScriptHook(x => x.OnWeatherChange(this, weatherName, oldWeatherName));
         return true;
-        // TODO: Trigger weather change script hooks
     }
 
     /// <inheritdoc />
@@ -409,12 +453,14 @@ public class BattleImpl : ScriptSource, IBattle
     private readonly ScriptContainer _terrainScript = new();
 
     /// <inheritdoc />
-    public void SetTerrain(StringKey? terrainName)
+    public void SetTerrain(StringKey? terrainName, EventBatchId batchId = default)
     {
+        var oldTerrainName = TerrainName;
         if (terrainName.HasValue)
         {
             if (!Library.ScriptResolver.TryResolve(ScriptCategory.Terrain, terrainName.Value, null, out var script))
                 throw new InvalidOperationException($"Terrain script {terrainName} not found.");
+
             _terrainScript.Set(script);
             script.OnAddedToParent(this);
         }
@@ -422,6 +468,10 @@ public class BattleImpl : ScriptSource, IBattle
         {
             _terrainScript.Clear();
         }
+        EventHook.Invoke(new TerrainChangeEvent(oldTerrainName, terrainName)
+        {
+            BatchId = batchId,
+        });
     }
 
     /// <inheritdoc />
@@ -463,4 +513,19 @@ public class BattleImpl : ScriptSource, IBattle
 
     /// <inheritdoc />
     public override void CollectScripts(List<IEnumerable<ScriptContainer>> scripts) => GetOwnScripts(scripts);
+
+    /// <inheritdoc />
+    public void Dispose()
+    {
+        foreach (var party in Parties)
+        {
+            foreach (var pokemon in party.Party.WhereNotNull())
+            {
+                pokemon.ClearBattleData();
+            }
+        }
+        _weatherScript.Clear();
+        _terrainScript.Clear();
+        Volatile.Clear();
+    }
 }

PkmnLib.Dynamic/Models/DamageSource.cs

@@ -35,4 +35,9 @@ public enum DamageSource
     /// The damage is done because of a status condition.
     /// </summary>
     Status = 5,
+
+    /// <summary>
+    /// The damage is done due to the Pokémon being confused and hitting itself.
+    /// </summary>
+    Confusion = 6,
 }

PkmnLib.Dynamic/Models/Pokemon.cs

@@ -354,12 +354,12 @@ public interface IPokemon : IScriptSource, IDeepCloneable
     /// <summary>
     /// Adds a non-volatile status to the Pokemon.
     /// </summary>
-    bool SetStatus(StringKey status);
+    bool SetStatus(StringKey status, EventBatchId batchId = default);
 
     /// <summary>
     /// Removes the current non-volatile status from the Pokemon.
     /// </summary>
-    void ClearStatus();
+    void ClearStatus(EventBatchId batchId = default);
 
     /// <summary>
     /// Modifies the level by a certain amount
@@ -382,6 +382,11 @@ public interface IPokemon : IScriptSource, IDeepCloneable
     /// <param name="position"></param>
     void SetBattleSidePosition(byte position);
 
+    /// <summary>
+    /// Resets the battle data of the Pokémon. This is called when the battle ends.
+    /// </summary>
+    void ClearBattleData();
+
     /// <summary>
     /// Marks a Pokemon as seen in the battle.
     /// </summary>
@@ -475,6 +480,16 @@ public interface IPokemonBattleData : IDeepCloneable
     /// The side the Pokémon is on.
     /// </summary>
     IBattleSide BattleSide { get; }
+
+    /// <summary>
+    /// The species of the Pokémon at the time it was sent out.
+    /// </summary>
+    ISpecies OriginalSpecies { get; }
+
+    /// <summary>
+    /// The form of the Pokémon at the time it was sent out.
+    /// </summary>
+    IForm OriginalForm { get; }
 }
 
 /// <inheritdoc cref="IPokemon"/>
@@ -928,7 +943,7 @@ public class PokemonImpl : ScriptSource, IPokemon
     }
 
     /// <inheritdoc />
-    public void ChangeForm(IForm form, EventBatchId batchId)
+    public void ChangeForm(IForm form, EventBatchId batchId = default)
     {
         if (form == Form)
             return;
@@ -1120,13 +1135,14 @@ public class PokemonImpl : ScriptSource, IPokemon
     public bool HasStatus(StringKey status) => StatusScript.Script?.Name == status;
 
     /// <inheritdoc />
-    public bool SetStatus(StringKey status)
+    public bool SetStatus(StringKey status, EventBatchId batchId = default)
     {
         if (!Library.ScriptResolver.TryResolve(ScriptCategory.Status, status, null, out var statusScript))
             throw new KeyNotFoundException($"Status script {status} not found");
 
         if (!StatusScript.IsEmpty)
             return false;
+        var oldStatus = StatusScript.Script?.Name;
 
         var preventStatus = false;
         this.RunScriptHook(script => script.PreventStatusChange(this, status, ref preventStatus));
@@ -1135,11 +1151,22 @@ public class PokemonImpl : ScriptSource, IPokemon
 
         StatusScript.Set(statusScript);
         statusScript.OnAddedToParent(this);
+        BattleData?.Battle.EventHook.Invoke(new StatusChangeEvent(this, oldStatus, status)
+        {
+            BatchId = batchId,
+        });
         return true;
     }
 
     /// <inheritdoc />
-    public void ClearStatus() => StatusScript.Clear();
+    public void ClearStatus(EventBatchId batchId = default)
+    {
+        StatusScript.Clear();
+        BattleData?.Battle.EventHook.Invoke(new StatusChangeEvent(this, StatusScript.Script?.Name, null)
+        {
+            BatchId = batchId,
+        });
+    }
 
     /// <inheritdoc />
     public void ChangeLevelBy(int change)
@@ -1160,7 +1187,17 @@ public class PokemonImpl : ScriptSource, IPokemon
         }
         else
         {
-            BattleData = new PokemonBattleDataImpl(battle, sideIndex, battle.CurrentTurnNumber);
+            BattleData = new PokemonBattleDataImpl(battle, sideIndex, battle.CurrentTurnNumber, Species, Form);
+        }
+        if (ActiveAbility != null && Library.ScriptResolver.TryResolve(ScriptCategory.Ability, ActiveAbility.Name,
+                ActiveAbility.Parameters, out var abilityScript))
+        {
+            AbilityScript.Set(abilityScript);
+            abilityScript.OnAddedToParent(this);
+        }
+        else
+        {
+            AbilityScript.Clear();
         }
     }
 
@@ -1192,6 +1229,24 @@ public class PokemonImpl : ScriptSource, IPokemon
         }
     }
 
+    /// <inheritdoc />
+    public void ClearBattleData()
+    {
+        var battleData = BattleData;
+        BattleData = null;
+        Volatile.Clear();
+        WeightInKg = Form.Weight;
+        HeightInMeters = Form.Height;
+        Types = Form.Types;
+        OverrideAbility = null;
+        AbilitySuppressed = false;
+        StatBoost.Reset();
+        if (battleData != null && Form.IsBattleOnlyForm)
+        {
+            ChangeForm(battleData.OriginalSpecies == Species ? battleData.OriginalForm : Species.GetDefaultForm());
+        }
+    }
+
     /// <inheritdoc />
     public void MarkOpponentAsSeen(IPokemon pokemon) => BattleData?.MarkOpponentAsSeen(pokemon);
 
@@ -1295,11 +1350,14 @@ public class PokemonImpl : ScriptSource, IPokemon
 public class PokemonBattleDataImpl : IPokemonBattleData
 {
     /// <inheritdoc cref="PokemonBattleDataImpl"/>
-    public PokemonBattleDataImpl(IBattle battle, byte sideIndex, uint switchInTurn)
+    public PokemonBattleDataImpl(IBattle battle, byte sideIndex, uint switchInTurn, ISpecies originalSpecies,
+        IForm originalForm)
     {
         Battle = battle;
         SideIndex = sideIndex;
         SwitchInTurn = switchInTurn;
+        OriginalSpecies = originalSpecies;
+        OriginalForm = originalForm;
     }
 
     /// <inheritdoc />
@@ -1342,4 +1400,10 @@ public class PokemonBattleDataImpl : IPokemonBattleData
 
     /// <inheritdoc />
     public IBattleSide BattleSide => Battle.Sides[SideIndex];
+
+    /// <inheritdoc />
+    public ISpecies OriginalSpecies { get; }
+
+    /// <inheritdoc />
+    public IForm OriginalForm { get; }
 }

PkmnLib.Dynamic/ScriptHandling/ILimitedTurnsScript.cs

@@ -5,6 +5,11 @@ namespace PkmnLib.Dynamic.ScriptHandling;
 /// </summary>
 public interface ILimitedTurnsScript
 {
+    /// <summary>
+    /// Gets the number of turns remaining for the script to last.
+    /// </summary>
+    public int TurnsRemaining { get; }
+
     /// <summary>
     /// Sets the number of turns the script will last.
     /// </summary>

PkmnLib.Dynamic/ScriptHandling/Script.cs

@@ -371,6 +371,14 @@ public abstract class Script : IDeepCloneable
     {
     }
 
+    /// <summary>
+    /// This function allows a script to change the damage modifier of an incoming move.
+    /// </summary>
+    public virtual void ChangeIncomingMoveDamageModifier(IExecutingMove executingMove, IPokemon target, byte hitNumber,
+        ref float modifier)
+    {
+    }
+
     /// <summary>
     /// This function allows a script to modify the outgoing damage done by a move.
     /// </summary>
@@ -740,4 +748,16 @@ public abstract class Script : IDeepCloneable
     public virtual void IsFloating(IPokemon pokemon, ref bool isFloating)
     {
     }
+
+    /// <summary>
+    /// This function allows a script to prevent the weather from changing. This is used for abilities such as
+    /// Delta Stream, which prevent the weather from changing to anything other than strong winds.
+    /// </summary>
+    public virtual void PreventWeatherChange(StringKey? weatherName, ref bool preventWeatherChange)
+    {
+    }
+
+    public virtual void OnWeatherChange(IBattle battle, StringKey? weatherName, StringKey? oldWeatherName)
+    {
+    }
 }

PkmnLib.Static/Species/Form.cs

@@ -89,6 +89,11 @@ public interface IForm : INamedValue
     /// Check if the form has a specific flag set.
     /// </summary>
     bool HasFlag(string key);
+
+    /// <summary>
+    /// Check if the form is a battle-only form, meaning it should return to its original form after the battle ends.
+    /// </summary>
+    bool IsBattleOnlyForm { get; }
 }
 
 /// <inheritdoc />
@@ -97,7 +102,8 @@ public class FormImpl : IForm
     /// <inheritdoc cref="FormImpl" />
     public FormImpl(StringKey name, float height, float weight, uint baseExperience, IEnumerable<TypeIdentifier> types,
         ImmutableStatisticSet<ushort> baseStats, IEnumerable<StringKey> abilities,
-        IEnumerable<StringKey> hiddenAbilities, ILearnableMoves moves, ImmutableHashSet<StringKey> flags)
+        IEnumerable<StringKey> hiddenAbilities, ILearnableMoves moves, ImmutableHashSet<StringKey> flags,
+        bool isBattleOnlyForm)
     {
         Name = name;
         Height = height;
@@ -109,6 +115,7 @@ public class FormImpl : IForm
         HiddenAbilities = [..hiddenAbilities];
         Moves = moves;
         Flags = flags;
+        IsBattleOnlyForm = isBattleOnlyForm;
 
         if (Types.Count == 0)
             throw new ArgumentException("A form must have at least one type.");
@@ -202,4 +209,7 @@ public class FormImpl : IForm
 
     /// <inheritdoc />
     public bool HasFlag(string key) => Flags.Contains(key);
+
+    /// <inheritdoc />
+    public bool IsBattleOnlyForm { get; }
 }

PkmnLib.Static/StatisticSet.cs

@@ -399,6 +399,21 @@ public record StatBoostStatisticSet : ClampedStatisticSet<sbyte>
         yield return (Statistic.Evasion, Evasion);
         yield return (Statistic.Accuracy, Accuracy);
     }
+
+    /// <summary>
+    /// Resets all statistics to 0.
+    /// </summary>
+    public void Reset()
+    {
+        Hp = 0;
+        Attack = 0;
+        Defense = 0;
+        SpecialAttack = 0;
+        SpecialDefense = 0;
+        Speed = 0;
+        Evasion = 0;
+        Accuracy = 0;
+    }
 }
 
 /// <summary>

PkmnLib.Tests/Integration/IntegrationTestRunner.cs

@@ -86,8 +86,8 @@ public class IntegrationTestRunner
 
             return new BattlePartyImpl(party, x.Indices.Select(y => new ResponsibleIndex(y[0], y[1])).ToArray());
         }).ProcessOneAtATime().GetResultsAsync();
-        var battle = new BattleImpl(library, parties, test.BattleSetup.CanFlee, test.BattleSetup.NumberOfSides,
+        using var battle = new BattleImpl(library, parties, test.BattleSetup.CanFlee, test.BattleSetup.NumberOfSides,
-            test.BattleSetup.PositionsPerSide, test.BattleSetup.Seed);
+            test.BattleSetup.PositionsPerSide, false, test.BattleSetup.Seed);
 
         foreach (var action in test.Actions)
         {

PkmnLib.Tests/Static/DeepCloneTests.cs

@@ -108,7 +108,7 @@ public class DeepCloneTests
             new BattlePartyImpl(party1, [new ResponsibleIndex(0, 0)]),
             new BattlePartyImpl(party2, [new ResponsibleIndex(1, 0)]),
         };
-        var battle = new BattleImpl(library, parties, false, 2, 3, 0);
+        using var battle = new BattleImpl(library, parties, false, 2, 3, false, 0);
         battle.Sides[0].SwapPokemon(0, party1[0]);
         battle.Sides[1].SwapPokemon(0, party2[0]);
         party1[0]!.ChangeStatBoost(Statistic.Defense, 2, true);

Plugins/PkmnLib.Plugin.Gen7/Data/Abilities.jsonc

@@ -77,7 +77,7 @@
   "chlorophyll": {
     "effect": "speed_modifier_in_weather",
     "parameters": {
-      "weather": "sunny",
+      "weather": "harsh_sunlight",
       "modifier": 2.0
     }
   },
@@ -131,26 +131,55 @@
   "defiant": {
     "effect": "defiant"
   },
-  "delta_stream": {},
+  "delta_stream": {
-  "desolate_land": {},
+    "effect": "delta_stream"
+  },
+  "desolate_land": {
+    "effect": "desolate_land"
+  },
   "disguise": {
+    "effect": "disguise",
     "canBeChanged": false,
     "flags": [
       "cant_be_copied"
     ]
   },
-  "download": {},
+  "download": {
-  "drizzle": {},
+    "effect": "download"
-  "drought": {},
+  },
-  "dry_skin": {},
+  "drizzle": {
-  "early_bird": {},
+    "effect": "drizzle"
-  "effect_spore": {},
+  },
-  "electric_surge": {},
+  "drought": {
-  "emergency_exit": {},
+    "effect": "drought"
-  "fairy_aura": {},
+  },
-  "filter": {},
+  "dry_skin": {
-  "flame_body": {},
+    "effect": "dry_skin"
-  "flare_boost": {},
+  },
+  "early_bird": {
+    "effect": "early_bird"
+  },
+  "effect_spore": {
+    "effect": "effect_spore"
+  },
+  "electric_surge": {
+    "effect": "electric_surge"
+  },
+  "emergency_exit": {
+    "effect": "emergency_exit"
+  },
+  "fairy_aura": {
+    "effect": "fairy_aura"
+  },
+  "filter": {
+    "effect": "filter"
+  },
+  "flame_body": {
+    "effect": "flame_body"
+  },
+  "flare_boost": {
+    "effect": "flare_boost"
+  },
   "flash_fire": {},
   "flower_gift": {
     "flags": [

Plugins/PkmnLib.Plugin.Gen7/Data/Moves.jsonc

@@ -4669,11 +4669,7 @@
         "snatch"
       ],
       "effect": {
-        "name": "change_multiple_user_stat_boosts",
+        "name": "growth"
-        "parameters": {
-          "attack": 1,
-          "specialAttack": 1
-        }
       }
     },
     {
@@ -11208,7 +11204,7 @@
       "effect": {
         "name": "set_weather",
         "parameters": {
-          "weather": "sunny"
+          "weather": "harsh_sunlight"
         }
       }
     },

Plugins/PkmnLib.Plugin.Gen7/GlobalUsings.cs

@@ -4,3 +4,4 @@ global using PkmnLib.Dynamic.Events;
 global using PkmnLib.Dynamic.Models;
 global using PkmnLib.Dynamic.Models.Choices;
 global using PkmnLib.Static;
+global using PkmnLib.Static.Utils;

Plugins/PkmnLib.Plugin.Gen7/Libraries/Battling/Gen7DamageCalculator.cs

@@ -155,6 +155,8 @@ public class Gen7DamageCalculator(Gen7PluginConfiguration configuration) : IDama
 
         executingMove.RunScriptHook(script =>
             script.ChangeDamageModifier(executingMove, target, hitNumber, ref modifier));
+        target.RunScriptHook(script =>
+            script.ChangeIncomingMoveDamageModifier(executingMove, target, hitNumber, ref modifier));
 
         return modifier;
     }

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

@@ -0,0 +1,27 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Delta Stream is an ability that creates strong winds when the Pokémon enters battle.
+/// These winds weaken the power of super-effective Flying-type moves and prevent other weather conditions.
+/// This ability is exclusive to Mega Rayquaza.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Delta_Stream_(Ability)">Bulbapedia - Delta Stream</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "delta_stream")]
+public class DeltaStreamAbility : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        var battle = pokemon.BattleData?.Battle;
+        if (battle == null)
+            return;
+
+        battle.SetWeather(ScriptUtils.ResolveName<Weather.StrongWinds>(), -1);
+        if (battle.WeatherName == ScriptUtils.ResolveName<Weather.StrongWinds>())
+        {
+            ((Weather.StrongWinds)battle.WeatherScript.Script!).MarkAsPlaced(pokemon);
+            battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon));
+        }
+    }
+}

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

@@ -0,0 +1,27 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Desolate Land is an ability that creates extremely harsh sunlight when the Pokémon enters battle.
+/// This sunlight is so intense that it prevents other weather conditions and makes Water-type moves fail.
+/// This ability is exclusive to Primal Groudon.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Desolate_Land_(Ability)">Bulbapedia - Desolate Land</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "desolate_land")]
+public class DesolateLandAbility : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        var battle = pokemon.BattleData?.Battle;
+        if (battle == null)
+            return;
+
+        battle.SetWeather(ScriptUtils.ResolveName<Weather.DesolateLands>(), -1);
+        if (battle.WeatherName == ScriptUtils.ResolveName<Weather.DesolateLands>())
+        {
+            ((Weather.DesolateLands)battle.WeatherScript.Script!).MarkAsPlaced(pokemon);
+            battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon));
+        }
+    }
+}

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

@@ -0,0 +1,50 @@
+using PkmnLib.Static.Species;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Disguise is an ability that allows the Pokémon to avoid damage from one attack.
+/// After being hit, the disguise is broken and the Pokémon's appearance changes.
+/// This ability is exclusive to Mimikyu.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Disguise_(Ability)">Bulbapedia - Disguise</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "disguise")]
+public class Disguise : Script
+{
+    /// <inheritdoc />
+    public override void ChangeIncomingDamage(IPokemon pokemon, DamageSource source, ref uint damage)
+    {
+        if (pokemon.BattleData == null)
+            return;
+        if (source is not DamageSource.MoveDamage and not DamageSource.Confusion)
+            return;
+        if (pokemon.Form.Name == "busted" || pokemon.Form.Name == "totem-busted")
+            return;
+        IForm form;
+        if (pokemon.Form.Name == "default")
+        {
+            if (!pokemon.Species.TryGetForm("busted", out form!))
+                return;
+        }
+        else if (pokemon.Form.Name == "totem-disguised")
+        {
+            if (!pokemon.Species.TryGetForm("totem-busted", out form!))
+                return;
+        }
+        else
+        {
+            return;
+        }
+
+        EventBatchId batchId = new();
+
+        pokemon.BattleData.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon)
+        {
+            BatchId = batchId,
+        });
+        pokemon.ChangeForm(form, batchId);
+
+        damage = 0;
+    }
+}

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

@@ -0,0 +1,36 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Download is an ability that raises the Pokémon's Attack or Special Attack stat when it enters battle,
+/// depending on which stat is lower on the opposing Pokémon.
+/// This ability is commonly associated with Porygon and its evolutions.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Download_(Ability)">Bulbapedia - Download</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "download")]
+public class Download : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        var battleData = pokemon.BattleData;
+        if (battleData == null)
+            return;
+
+        var opponents = battleData.Battle.Sides.Where(x => x != battleData.BattleSide).SelectMany(x => x.Pokemon)
+            .WhereNotNull().ToArray();
+        if (opponents.Length == 0)
+            return;
+        var opponentAverageDefense = opponents.Average(x => x.BoostedStats.Defense);
+        var opponentAverageSpecialDefense = opponents.Average(x => x.BoostedStats.SpecialDefense);
+
+        EventBatchId batchId = new();
+        battleData.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon)
+        {
+            BatchId = batchId,
+        });
+        pokemon.ChangeStatBoost(
+            opponentAverageDefense < opponentAverageSpecialDefense ? Statistic.Attack : Statistic.SpecialAttack, 1,
+            true, batchId);
+    }
+}

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

@@ -0,0 +1,27 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Drizzle is an ability that creates rain when the Pokémon enters battle.
+/// This rain boosts Water-type moves and weakens Fire-type moves.
+/// This ability is commonly associated with Kyogre and Politoed.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Drizzle_(Ability)">Bulbapedia - Drizzle</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "drizzle")]
+public class Drizzle : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        var battleData = pokemon.BattleData;
+        if (battleData == null)
+            return;
+
+        EventBatchId batchId = new();
+        battleData.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon)
+        {
+            BatchId = batchId,
+        });
+        battleData.Battle.SetWeather(ScriptUtils.ResolveName<Weather.Rain>(), 5, batchId);
+    }
+}

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

@@ -0,0 +1,27 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Drought is an ability that creates harsh sunlight when the Pokémon enters battle.
+/// This sunlight boosts Fire-type moves and weakens Water-type moves.
+/// This ability is commonly associated with Groudon and Ninetales.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Drought_(Ability)">Bulbapedia - Drought</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "drought")]
+public class Drought : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        var battleData = pokemon.BattleData;
+        if (battleData == null)
+            return;
+
+        EventBatchId batchId = new();
+        battleData.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon)
+        {
+            BatchId = batchId,
+        });
+        battleData.Battle.SetWeather(ScriptUtils.ResolveName<Weather.HarshSunlight>(), 5, batchId);
+    }
+}

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);
+        }
+    }
+}

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

@@ -0,0 +1,25 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Early Bird is an ability that allows the Pokémon to wake up from sleep twice as fast.
+/// This means the number of turns the Pokémon stays asleep is halved, rounded down.
+/// This ability is commonly associated with Kangaskhan and Dodrio.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Early_Bird_(Ability)">Bulbapedia - Early Bird</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "early_bird")]
+public class EarlyBird : Script
+{
+    /// <inheritdoc />
+    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    {
+        if (eventName != CustomTriggers.ModifySleepTurns)
+            return;
+        if (parameters == null)
+            return;
+        if (parameters.TryGetValue("turns", out var turnsObj) && turnsObj is int turns)
+        {
+            parameters["turns"] = turns / 2;
+        }
+    }
+}

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

@@ -0,0 +1,49 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Effect Spore is an ability that has a 30% chance of inflicting a status condition on the attacker
+/// when hit by a contact move. The status condition can be poison (9%), paralysis (10%), or sleep (11%).
+/// This ability is commonly associated with Paras and Shroomish.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Effect_Spore_(Ability)">Bulbapedia - Effect Spore</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "effect_spore")]
+public class EffectSpore : Script
+{
+    /// <inheritdoc />
+    public override void OnIncomingHit(IExecutingMove move, IPokemon target, byte hit)
+    {
+        if (move.User.Types.Any(x => x.Name == "grass"))
+            return;
+        if (move.User.ActiveAbility?.Name == "effect_spore")
+            return;
+        if (move.User.HasHeldItem("safety_goggles"))
+            return;
+        if (!move.UseMove.HasFlag("contact"))
+            return;
+
+        var rng = move.Battle.Random;
+        var chance = rng.GetInt(0, 100);
+        EventBatchId batchId = new();
+        if (chance < 30)
+        {
+            move.Battle.EventHook.Invoke(new AbilityTriggerEvent(target)
+            {
+                BatchId = batchId,
+            });
+        }
+
+        switch (chance)
+        {
+            case < 9:
+                move.User.SetStatus(ScriptUtils.ResolveName<Status.Poisoned>(), batchId);
+                break;
+            case < 19:
+                move.User.SetStatus(ScriptUtils.ResolveName<Status.Paralyzed>(), batchId);
+                break;
+            case < 30:
+                move.User.SetStatus(ScriptUtils.ResolveName<Status.Sleep>(), batchId);
+                break;
+        }
+    }
+}

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

@@ -0,0 +1,29 @@
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Electric Surge is an ability that creates Electric Terrain when the Pokémon enters battle.
+/// This terrain prevents grounded Pokémon from falling asleep and boosts Electric-type moves.
+/// This ability is exclusive to Tapu Koko.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Electric_Surge_(Ability)">Bulbapedia - Electric Surge</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "electric_surge")]
+public class ElectricSurge : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        var battleData = pokemon.BattleData;
+        if (battleData == null)
+            return;
+
+        EventBatchId batchId = new();
+        battleData.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon)
+        {
+            BatchId = batchId,
+        });
+        battleData.Battle.SetTerrain(ScriptUtils.ResolveName<Terrain.ElectricTerrain>(), batchId);
+    }
+}

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

@@ -0,0 +1,32 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Emergency Exit is an ability that makes the Pokémon switch out when its HP drops below half.
+/// This ability is similar to Wimp Out and is exclusive to Golisopod.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Emergency_Exit_(Ability)">Bulbapedia - Emergency Exit</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "emergency_exit")]
+public class EmergencyExit : Script
+{
+    /// <inheritdoc />
+    public override void OnDamage(IPokemon pokemon, DamageSource source, uint oldHealth, uint newHealth)
+    {
+        if (pokemon.BattleData is null)
+            return;
+        if (source is DamageSource.Confusion)
+            return;
+
+        var oldHealthFraction = (float)oldHealth / pokemon.MaxHealth;
+        var newHealthFraction = (float)newHealth / pokemon.MaxHealth;
+        if (!(oldHealthFraction >= 0.5f) || !(newHealthFraction < 0.5f))
+            return;
+
+        if (pokemon.BattleData.Battle.IsWildBattle)
+        {
+            pokemon.BattleData.Battle.ForceEndBattle();
+            return;
+        }
+        pokemon.BattleData.BattleSide.SwapPokemon(pokemon.BattleData.Position, null);
+    }
+}

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

@@ -0,0 +1,34 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Fairy Aura is an ability that increases the power of Fairy-type moves by 33% for all Pokémon on the field.
+/// The effect can be modified by other abilities (such as Aura Break) via a custom script hook.
+/// This ability is exclusive to Xerneas.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Fairy_Aura_(Ability)">Bulbapedia - Fairy Aura</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "fairy_aura")]
+public class FairyAura : Script
+{
+    /// <inheritdoc />
+    public override void ChangeDamageModifier(IExecutingMove move, IPokemon target, byte hit, ref float modifier)
+    {
+        if (move.GetHitData(target, hit).Type?.Name == "fairy")
+        {
+            var auraModifier = 5448f / 4096f;
+            var parameters = new Dictionary<StringKey, object?>
+            {
+                ["aura_type"] = "fairy",
+                ["modifier"] = auraModifier,
+            };
+            move.Battle.Sides.SelectMany(side => side.Pokemon).WhereNotNull()
+                .RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifyAuraEffect, parameters));
+            if (parameters.TryGetValue("modifier", out var modObj) && modObj is float modValue)
+            {
+                auraModifier = modValue;
+            }
+            modifier *= auraModifier;
+            move.Battle.EventHook.Invoke(new AbilityTriggerEvent(move.User));
+        }
+    }
+}

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

@@ -0,0 +1,22 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Filter is an ability that reduces the damage taken from super-effective moves by 25%.
+/// This ability is similar to Solid Rock, but is exclusive to certain Pokémon like Mr. Mime.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Filter_(Ability)">Bulbapedia - Filter</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "filter")]
+public class Filter : Script
+{
+    /// <inheritdoc />
+    public override void ChangeIncomingMoveDamageModifier(IExecutingMove move, IPokemon target, byte hit,
+        ref float modifier)
+    {
+        if (move.GetHitData(target, hit).Effectiveness >= 2.0f)
+        {
+            modifier *= 0.75f;
+            move.Battle.EventHook.Invoke(new AbilityTriggerEvent(move.User));
+        }
+    }
+}

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

@@ -0,0 +1,25 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Flame Body is an ability that has a 30% chance of burning the attacker when hit by a contact move.
+/// This ability is similar to Effect Spore and Static, but inflicts burn instead of other status conditions.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Flame_Body_(Ability)">Bulbapedia - Flame Body</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "flame_body")]
+public class FlameBody : Script
+{
+    /// <inheritdoc />
+    public override void OnIncomingHit(IExecutingMove move, IPokemon target, byte hit)
+    {
+        if (!move.UseMove.HasFlag("contact"))
+            return;
+
+        var rng = move.Battle.Random;
+        if (rng.GetInt(0, 100) >= 30) // 30% chance
+            return;
+
+        move.Battle.EventHook.Invoke(new AbilityTriggerEvent(target));
+        move.User.SetStatus(ScriptUtils.ResolveName<Status.Burned>());
+    }
+}

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

@@ -0,0 +1,23 @@
+using PkmnLib.Static.Moves;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Flare Boost is an ability that increases the power of special moves by 50% when the Pokémon is burned.
+/// This ability is exclusive to Drifblim.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Flare_Boost_(Ability)">Bulbapedia - Flare Boost</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "flare_boost")]
+public class FlareBoost : Script
+{
+    /// <inheritdoc />
+    public override void ChangeDamageModifier(IExecutingMove move, IPokemon target, byte hit, ref float modifier)
+    {
+        if (!move.User.HasStatus(ScriptUtils.ResolveName<Status.Burned>()))
+            return;
+
+        if (move.UseMove.Category == MoveCategory.Special)
+            modifier *= 1.5f;
+    }
+}

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

@@ -0,0 +1,29 @@
+using PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Flash Fire is an ability that makes the Pokémon immune to Fire-type moves.
+/// When hit by a Fire-type move, the ability activates and increases the power of the Pokémon's Fire-type moves by 50%.
+/// This ability is commonly associated with Ninetales and Arcanine.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Flash_Fire_(Ability)">Bulbapedia - Flash Fire</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "flash_fire")]
+public class FlashFire : Script
+{
+    /// <inheritdoc />
+    public override void ChangeIncomingEffectiveness(IExecutingMove executingMove, IPokemon target, byte hitIndex,
+        ref float effectiveness)
+    {
+        if (executingMove.GetHitData(target, hitIndex).Type?.Name == "fire")
+        {
+            effectiveness = 0f;
+
+            if (target.Volatile.Contains<FlashFireEffect>())
+                return;
+            target.Volatile.Add(new FlashFireEffect());
+            executingMove.Battle.EventHook.Invoke(new AbilityTriggerEvent(target));
+        }
+    }
+}

Plugins/PkmnLib.Plugin.Gen7/Scripts/CustomTriggers.cs

@@ -1,5 +1,3 @@
-using PkmnLib.Static.Utils;
-
 namespace PkmnLib.Plugin.Gen7.Scripts;
 
 public static class CustomTriggers
@@ -21,4 +19,8 @@ public static class CustomTriggers
     public static readonly StringKey Whirlpool = "whirlpool";
 
     public static readonly StringKey ModifyAuraEffect = "modify_aura_effect";
+
+    public static readonly StringKey BypassChargeMove = "bypass_charge_move";
+
+    public static readonly StringKey ModifySleepTurns = "modify_sleep_turns";
 }

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/ChargeMove.cs

@@ -7,6 +7,14 @@ public class ChargeMove : Script
 {
     public override void PreventMove(IExecutingMove move, ref bool prevent)
     {
+        var bypassCharge = false;
+        var parameters = new Dictionary<StringKey, object?>
+        {
+            { "move", move },
+            { "bypassCharge", bypassCharge },
+        };
+        move.RunScriptHook(script => script.CustomTrigger(CustomTriggers.BypassChargeMove, parameters));
+
         var chargeMoveEffect = move.User.Volatile.Get<ChargeMoveEffect>();
         if (chargeMoveEffect != null && chargeMoveEffect.MoveName == move.UseMove.Name)
             return;

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Growth.cs

@@ -0,0 +1,18 @@
+using PkmnLib.Plugin.Gen7.Scripts.Weather;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "growth")]
+public class Growth : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        EventBatchId batchId = new();
+        sbyte amount = 1;
+        if (move.Battle.WeatherName == ScriptUtils.ResolveName<HarshSunlight>())
+            amount = 2;
+        move.User.ChangeStatBoost(Statistic.Attack, amount, true, batchId);
+        move.User.ChangeStatBoost(Statistic.SpecialAttack, amount, true, batchId);
+    }
+}

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Moonlight.cs

@@ -15,7 +15,7 @@ public class Moonlight : Script
 
         var fraction = 0.5f;
         var weather = battleData.Battle.WeatherName;
-        if (weather == ScriptUtils.ResolveName<Sunny>())
+        if (weather == ScriptUtils.ResolveName<HarshSunlight>())
             fraction = 2f / 3f;
         else if (weather == ScriptUtils.ResolveName<Rain>() || weather == ScriptUtils.ResolveName<Hail>() ||
                  weather == ScriptUtils.ResolveName<Sandstorm>())

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Synthesis.cs

@@ -8,7 +8,7 @@ public class Synthesis : Script
     {
         var healModifier = 0.5f;
         var weatherName = target.BattleData?.Battle.WeatherName;
-        if (weatherName == ScriptUtils.ResolveName<Weather.Sunny>())
+        if (weatherName == ScriptUtils.ResolveName<Weather.HarshSunlight>())
             healModifier = 2 / 3f;
         else if (weatherName == ScriptUtils.ResolveName<Weather.Rain>() ||
                  weatherName == ScriptUtils.ResolveName<Weather.Hail>() ||

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/WeatherBall.cs

@@ -23,7 +23,7 @@ public class WeatherBall : Script
         if (weather is null)
             return;
 
-        if (weather == ScriptUtils.ResolveName<Weather.Sunny>() &&
+        if (weather == ScriptUtils.ResolveName<Weather.HarshSunlight>() &&
             typeLibrary.TryGetTypeIdentifier("fire", out var fireType))
             typeIdentifier = fireType;
         else if (weather == ScriptUtils.ResolveName<Weather.Rain>() &&

Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/FlashFireEffect.cs

@@ -0,0 +1,15 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+[Script(ScriptCategory.Pokemon, "flash_fire_effect")]
+public class FlashFireEffect : Script
+{
+    /// <inheritdoc />
+    public override void ChangeOffensiveStatValue(IExecutingMove move, IPokemon target, byte hit, uint defensiveStat,
+        ImmutableStatisticSet<uint> targetStats, ref uint value)
+    {
+        if (move.GetHitData(target, hit).Type?.Name == "fire")
+        {
+            value = value.MultiplyOrMax(1.5f);
+        }
+    }
+}

Plugins/PkmnLib.Plugin.Gen7/Scripts/Status/Sleep.cs

@@ -22,6 +22,13 @@ public class Sleep : Script
         {
             // 1-3 turns of sleep
             Turns = battleData.Battle.Random.GetInt(1, 4);
+            source.RunScriptHook(x => x.CustomTrigger(CustomTriggers.ModifySleepTurns,
+                new Dictionary<StringKey, object?>
+                {
+                    { "pokemon", pokemon },
+                    { "turns", Turns },
+                }));
+            Turns = Math.Max(1, Turns);
         }
     }
 

Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/DesolateLands.cs

@@ -0,0 +1,36 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Weather;
+
+[Script(ScriptCategory.Weather, "desolate_lands")]
+public class DesolateLands : HarshSunlight
+{
+    private readonly HashSet<IPokemon> _placers = [];
+
+    public void MarkAsPlaced(IPokemon pokemon)
+    {
+        _placers.Add(pokemon);
+    }
+
+    /// <inheritdoc />
+    public override void OnSwitchOut(IPokemon oldPokemon, byte position)
+    {
+        _placers.Remove(oldPokemon);
+        if (_placers.Count == 0)
+            oldPokemon.BattleData?.Battle.SetWeather(null, 0);
+    }
+
+    /// <inheritdoc />
+    public override void PreventWeatherChange(StringKey? weatherName, ref bool preventWeatherChange)
+    {
+        if (weatherName == ScriptUtils.ResolveName<PrimordialSea>() ||
+            weatherName == ScriptUtils.ResolveName<StrongWinds>())
+            return;
+        preventWeatherChange = true;
+    }
+
+    /// <inheritdoc />
+    public override void FailMove(IExecutingMove move, ref bool fail)
+    {
+        if (move.UseMove.MoveType.Name == "water")
+            fail = true;
+    }
+}

Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Hail.cs

@@ -1,5 +1,3 @@
-using PkmnLib.Static.Utils;
-
 namespace PkmnLib.Plugin.Gen7.Scripts.Weather;
 
 [Script(ScriptCategory.Weather, "hail")]
@@ -7,6 +5,9 @@ public class Hail : Script, ILimitedTurnsScript
 {
     private int? _duration;
 
+    /// <inheritdoc />
+    public int TurnsRemaining => _duration ?? 0;
+
     /// <inheritdoc />
     public void SetTurns(int turns)
     {

Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/HarshSunlight.cs

@@ -0,0 +1,59 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Weather;
+
+/// <summary>
+/// HarshSunlight is a weather condition that intensifies the effects of sunlight.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Harsh_sunlight">Bulbapedia - Harsh Sunlight</see>
+/// </summary>
+[Script(ScriptCategory.Weather, "harsh_sunlight")]
+public class HarshSunlight : Script
+{
+    /// <inheritdoc />
+    public override void ChangeBasePower(IExecutingMove move, IPokemon target, byte hit, ref ushort basePower)
+    {
+        var hitType = move.GetHitData(target, hit).Type;
+        if (hitType?.Name == "fire" || move.UseMove.Name == "hydro_steam")
+        {
+            // Increase Fire-type move power by 50% in harsh sunlight
+            basePower = (ushort)(basePower * 1.5);
+        }
+        else if (hitType?.Name == "water")
+        {
+            basePower = (ushort)(basePower * 0.5);
+        }
+    }
+
+    /// <inheritdoc />
+    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    {
+        if (eventName == CustomTriggers.BypassChargeMove)
+        {
+            if (parameters == null || !parameters.TryGetValue("move", out var moveObj) ||
+                moveObj is not IExecutingMove move)
+                return;
+            if (move.UseMove.Name == "solar_beam" || move.UseMove.Name == "solar_blade")
+            {
+                parameters["bypassCharge"] = true;
+            }
+        }
+    }
+
+    /// <inheritdoc />
+    public override void PreventStatusChange(IPokemon pokemonImpl, StringKey status, ref bool preventStatus)
+    {
+        if (status == ScriptUtils.ResolveName<Status.Frozen>())
+        {
+            preventStatus = true;
+        }
+    }
+
+    /// <inheritdoc />
+    public override void ChangeAccuracy(IExecutingMove executingMove, IPokemon target, byte hitIndex,
+        ref int modifiedAccuracy)
+    {
+        if (executingMove.UseMove.Name == "thunder" || executingMove.UseMove.Name == "hurricane")
+        {
+            modifiedAccuracy = (int)(modifiedAccuracy * 0.5);
+        }
+    }
+}

Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/PrimordialSea.cs

@@ -0,0 +1,29 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Weather;
+
+[Script(ScriptCategory.Weather, "primordial_sea")]
+public class PrimordialSea : Script
+{
+    private HashSet<IPokemon> _placers = new();
+
+    public void MarkAsPlaced(IPokemon pokemon)
+    {
+        _placers.Add(pokemon);
+    }
+
+    /// <inheritdoc />
+    public override void OnSwitchOut(IPokemon oldPokemon, byte position)
+    {
+        _placers.Remove(oldPokemon);
+        if (_placers.Count == 0)
+            oldPokemon.BattleData?.Battle.SetWeather(null, 0);
+    }
+
+    /// <inheritdoc />
+    public override void PreventWeatherChange(StringKey? weatherName, ref bool preventWeatherChange)
+    {
+        if (weatherName == ScriptUtils.ResolveName<DesolateLands>() ||
+            weatherName == ScriptUtils.ResolveName<StrongWinds>())
+            return;
+        preventWeatherChange = true;
+    }
+}

Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/StrongWinds.cs

@@ -0,0 +1,50 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Weather;
+
+/// <summary>
+/// StrongWinds is a weather condition that represents strong winds in battle.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Strong_winds">Bulbapedia - Strong Winds</see>
+/// </summary>
+[Script(ScriptCategory.Weather, "strong_winds")]
+public class StrongWinds : Script
+{
+    private HashSet<IPokemon> _placers = new();
+
+    public void MarkAsPlaced(IPokemon pokemon)
+    {
+        _placers.Add(pokemon);
+    }
+
+    /// <inheritdoc />
+    public override void OnSwitchOut(IPokemon oldPokemon, byte position)
+    {
+        _placers.Remove(oldPokemon);
+        if (_placers.Count == 0)
+            oldPokemon.BattleData?.Battle.SetWeather(null, 0);
+    }
+
+    /// <inheritdoc />
+    public override void PreventWeatherChange(StringKey? weatherName, ref bool preventWeatherChange)
+    {
+        if (weatherName == ScriptUtils.ResolveName<DesolateLands>() ||
+            weatherName == ScriptUtils.ResolveName<PrimordialSea>())
+            return;
+        preventWeatherChange = true;
+    }
+
+    /// <inheritdoc />
+    public override void ChangeTypesForMove(IExecutingMove executingMove, IPokemon target, byte hitIndex,
+        IList<TypeIdentifier> types)
+    {
+        var flyingType = types.FirstOrDefault(x => x.Name == "flying");
+        if (flyingType != null)
+        {
+            var typeLibrary = executingMove.Battle.Library.StaticLibrary.Types;
+            var hitData = executingMove.GetHitData(target, hitIndex);
+            if (hitData.Type != null && typeLibrary.GetSingleEffectiveness(hitData.Type.Value, flyingType) > 1)
+            {
+                types.Remove(flyingType);
+            }
+        }
+    }
+}

Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/Sunny.cs

@@ -1,7 +0,0 @@
-namespace PkmnLib.Plugin.Gen7.Scripts.Weather;
-
-[Script(ScriptCategory.Weather, "sunny")]
-public class Sunny : Script
-{
-    // TODO: Implement Sunny
-}