Implements several more moves

PkmnLib.Dynamic/Models/Pokemon.cs

@@ -252,12 +252,18 @@ public interface IPokemon : IScriptSource, IDeepCloneable
     /// <param name="stat">The stat to be changed</param>
     /// <param name="change">The amount to change the stat by</param>
     /// <param name="selfInflicted">Whether the change was self-inflicted. This can be relevant in scripts.</param>
-    bool ChangeStatBoost(Statistic stat, sbyte change, bool selfInflicted);
+    /// <param name="batchId">The event batch ID this change is a part of. This is relevant for visual handling</param>
+    bool ChangeStatBoost(Statistic stat, sbyte change, bool selfInflicted, EventBatchId batchId = default);
 
+    /// <summary>
+    /// Suppresses the ability of the Pokémon.
+    /// </summary>
+    public void SuppressAbility();
+    
     /// <summary>
     /// Returns the currently active ability.
     /// </summary>
-    IAbility ActiveAbility { get; }
+    IAbility? ActiveAbility { get; }
 
     /// <summary>
     /// Calculates the flat stats on the Pokemon. This should be called when for example the base
@@ -362,6 +368,11 @@ public interface IPokemon : IScriptSource, IDeepCloneable
     /// the Pokémon already has it.
     /// </summary>
     bool AddType(TypeIdentifier type);
+    
+    /// <summary>
+    /// Replace the types of the Pokémon with the provided types.
+    /// </summary>
+    void SetTypes(IReadOnlyList<TypeIdentifier> types);
 
     /// <summary>
     /// Converts the data structure to a serializable format.
@@ -714,7 +725,7 @@ public class PokemonImpl : ScriptSource, IPokemon
     }
 
     /// <inheritdoc />
-    public bool ChangeStatBoost(Statistic stat, sbyte change, bool selfInflicted)
+    public bool ChangeStatBoost(Statistic stat, sbyte change, bool selfInflicted, EventBatchId batchId = default)
     {
         var prevented = false;
         this.RunScriptHook(script => script.PreventStatBoostChange(this, stat, change, selfInflicted, ref prevented));
@@ -736,18 +747,34 @@ public class PokemonImpl : ScriptSource, IPokemon
         if (BattleData != null)
         {
             var newBoost = StatBoost.GetStatistic(stat);
-            BattleData.Battle.EventHook.Invoke(new StatBoostEvent(this, stat, oldBoost, newBoost));
+            BattleData.Battle.EventHook.Invoke(new StatBoostEvent(this, stat, oldBoost, newBoost)
+            {
+                BatchId = batchId,
+            });
         }
 
         RecalculateBoostedStats();
         return true;
     }
+    
+    /// <summary>
+    /// Whether the ability of the Pokémon is suppressed.
+    /// </summary>
+    public bool AbilitySuppressed { get; private set; }
+    
+    /// <inheritdoc />
+    public void SuppressAbility()
+    {
+        OverrideAbility = null;
+    }
 
     /// <inheritdoc />
-    public IAbility ActiveAbility
+    public IAbility? ActiveAbility
     {
         get
         {
+            if (AbilitySuppressed)
+                return null;
             if (OverrideAbility != null)
                 return OverrideAbility;
             var ability = Form.GetAbility(AbilityIndex);
@@ -1004,6 +1031,9 @@ public class PokemonImpl : ScriptSource, IPokemon
                 Volatile.Clear();
                 WeightInKg = Form.Weight;
                 HeightInMeters = Form.Height;
+                Types = Form.Types;
+                OverrideAbility = null;
+                AbilitySuppressed = false;
             }
         }
     }
@@ -1032,6 +1062,12 @@ public class PokemonImpl : ScriptSource, IPokemon
         return true;
     }
 
+    /// <inheritdoc />
+    public void SetTypes(IReadOnlyList<TypeIdentifier> types)
+    {
+        _types = types.ToList();
+    }
+
     /// <inheritdoc />
     public SerializedPokemon Serialize() => new(this);
 

PkmnLib.Static/Libraries/TypeLibrary.cs

@@ -28,6 +28,8 @@ public interface IReadOnlyTypeLibrary
     /// This is equivalent to running get_single_effectiveness on each defending type, and multiplying the results with each other.
     /// </summary>
     float GetEffectiveness(TypeIdentifier attacking, IReadOnlyList<TypeIdentifier> defending);
+
+    IEnumerable<(TypeIdentifier type, float effectiveness)> GetAllEffectivenessFromAttacking(TypeIdentifier attacking);
 }
 
 /// <inheritdoc />
@@ -70,6 +72,17 @@ public class TypeLibrary : IReadOnlyTypeLibrary
         defending.Aggregate<TypeIdentifier, float>(1,
             (current, type) => current * GetSingleEffectiveness(attacking, type));
 
+    /// <inheritdoc />
+    public IEnumerable<(TypeIdentifier, float)> GetAllEffectivenessFromAttacking(TypeIdentifier attacking)
+    {
+        if (attacking.Value < 1 || attacking.Value > _effectiveness.Count)
+            throw new ArgumentOutOfRangeException(nameof(attacking));
+        for (var i = 0; i < _effectiveness.Count; i++)
+        {
+            yield return (new TypeIdentifier((byte)(i + 1)), _effectiveness[attacking.Value - 1][i]);
+        }
+    }
+
     /// <summary>
     /// Registers a new type in the library.
     /// </summary>

PkmnLib.Static/Statistic.cs

@@ -29,4 +29,16 @@ public enum Statistic : byte
     /// Speed determines the order that a Pokémon can act in battle.
     /// </summary>
     Speed,
+    
+    /// <summary>
+    /// Evasion determines the likelihood that a Pokémon will dodge an attack.
+    /// This is not part of base stats, but is a temporary stat boost.
+    /// </summary>
+    Evasion,
+    
+    /// <summary>
+    /// Accuracy determines the likelihood that a Pokémon will hit an attack.
+    /// This is not part of base stats, but is a temporary stat boost.
+    /// </summary>
+    Accuracy,
 }

PkmnLib.Static/StatisticSet.cs

@@ -168,12 +168,24 @@ public record StatisticSet<T> : ImmutableStatisticSet<T>, IEnumerable<T>, IDeepC
                 Speed = Add(Speed, value);
                 break;
             default:
-                throw new ArgumentException("Invalid statistic.");
+                SetUnknownStat(stat, Add(GetUnknownStat(stat), value));
+                break;
         }
 
         return true;
     }
 
+    protected virtual T GetUnknownStat(Statistic stat)
+    {
+        throw new ArgumentException($"Invalid statistic {stat}");
+    }
+    
+    protected virtual void SetUnknownStat(Statistic stat, T value)
+    {
+        throw new ArgumentException($"Invalid statistic {stat}");
+    }
+    
+
     /// <summary>
     /// Decreases a statistic in the set by a value.
     /// </summary>
@@ -200,14 +212,15 @@ public record StatisticSet<T> : ImmutableStatisticSet<T>, IEnumerable<T>, IDeepC
                 Speed = Subtract(Speed, value);
                 break;
             default:
-                throw new ArgumentException("Invalid statistic.");
+                SetUnknownStat(stat, Subtract(GetUnknownStat(stat), value));
+                break;
         }
 
         return true;
     }
 
     /// <inheritdoc />
-    public IEnumerator<T> GetEnumerator()
+    public virtual IEnumerator<T> GetEnumerator()
     {
         yield return Hp;
         yield return Attack;
@@ -332,6 +345,47 @@ public record StatBoostStatisticSet : ClampedStatisticSet<sbyte>
         sbyte speed) : base(hp, attack, defense, specialAttack, specialDefense, speed)
     {
     }
+
+    /// <inheritdoc />
+    protected override sbyte GetUnknownStat(Statistic stat)
+    {
+        return stat switch
+        {
+            Statistic.Evasion => Evasion,
+            Statistic.Accuracy => Accuracy,
+            _ => throw new ArgumentException($"Invalid statistic {stat}"),
+        };
+    }
+
+    /// <inheritdoc />
+    /// <inheritdoc />
+    protected override void SetUnknownStat(Statistic stat, sbyte value)
+    {
+        switch (stat)
+        {
+            case Statistic.Evasion:
+                Evasion = value;
+                break;
+            case Statistic.Accuracy:
+                Accuracy = value;
+                break;
+            default:
+                throw new ArgumentException($"Invalid statistic {stat}");
+        }
+    }
+
+    /// <inheritdoc />
+    public override IEnumerator<sbyte> GetEnumerator()
+    {
+        yield return Hp;
+        yield return Attack;
+        yield return Defense;
+        yield return SpecialAttack;
+        yield return SpecialDefense;
+        yield return Speed;
+        yield return Evasion;
+        yield return Accuracy;
+    }
 }
 
 /// <summary>

PkmnLib.Tests/Data/Moves.json

@@ -1424,7 +1424,10 @@
       "category": "status",
       "flags": [
         "snatch"
-      ]
+      ],
+      "effect": {
+        "name": "calm_mind"
+      }
     },
     {
       "name": "camouflage",
@@ -1437,7 +1440,10 @@
       "category": "status",
       "flags": [
         "snatch"
-      ]
+      ],
+      "effect": {
+        "name": "camouflage"
+      }
     },
     {
       "name": "captivate",
@@ -1452,7 +1458,10 @@
         "protect",
         "reflectable",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "captivate"
+      }
     },
     {
       "name": "catastropika",
@@ -1476,7 +1485,10 @@
       "priority": 0,
       "target": "Self",
       "category": "status",
-      "flags": []
+      "flags": [],
+      "effect": {
+        "name": "celebrate"
+      }
     },
     {
       "name": "charge",
@@ -1489,7 +1501,10 @@
       "category": "status",
       "flags": [
         "snatch"
-      ]
+      ],
+      "effect": {
+        "name": "charge"
+      }
     },
     {
       "name": "charge_beam",
@@ -1503,7 +1518,14 @@
       "flags": [
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "change_user_special_attack",
+        "chance": 70,
+        "parameters": {
+          "amount": 1
+        }
+      }
     },
     {
       "name": "charm",
@@ -1518,7 +1540,13 @@
         "protect",
         "reflectable",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "change_target_attack",
+        "parameters": {
+          "amount": -2
+        }
+      }
     },
     {
       "name": "chatter",
@@ -1535,7 +1563,10 @@
         "sound",
         "distance",
         "ignore-substitute"
-      ]
+      ],
+      "effect": {
+        "name": "confuse"
+      }
     },
     {
       "name": "chip_away",
@@ -1550,7 +1581,10 @@
         "contact",
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "chip_away"
+      }
     },
     {
       "name": "circle_throw",
@@ -1565,7 +1599,10 @@
         "contact",
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "circle_throw"
+      }
     },
     {
       "name": "clamp",
@@ -1580,7 +1617,10 @@
         "contact",
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "bind"
+      }
     },
     {
       "name": "clanging_scales",
@@ -1596,7 +1636,13 @@
         "mirror",
         "sound",
         "ignore-substitute"
-      ]
+      ],
+      "effect": {
+        "name": "change_user_defense",
+        "parameters": {
+          "amount": -1
+        }
+      }
     },
     {
       "name": "clear_smog",
@@ -1610,7 +1656,10 @@
       "flags": [
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "reset_target_stats"
+      }
     },
     {
       "name": "close_combat",
@@ -1625,7 +1674,13 @@
         "contact",
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "change_user_defense",
+        "parameters": {
+          "amount": -1
+        }
+      }
     },
     {
       "name": "coil",
@@ -1638,7 +1693,10 @@
       "category": "status",
       "flags": [
         "snatch"
-      ]
+      ],
+      "effect": {
+        "name": "coil"
+      }
     },
     {
       "name": "comet_punch",
@@ -1654,7 +1712,10 @@
         "protect",
         "mirror",
         "punch"
-      ]
+      ],
+      "effect": {
+        "name": "2_5_hit_move"
+      }
     },
     {
       "name": "confide",
@@ -1670,7 +1731,13 @@
         "mirror",
         "sound",
         "ignore-substitute"
-      ]
+      ],
+      "effect": {
+        "name": "change_target_special_attack",
+        "parameters": {
+          "amount": -1
+        }
+      }
     },
     {
       "name": "confuse_ray",
@@ -1685,7 +1752,10 @@
         "protect",
         "reflectable",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "confuse"
+      }
     },
     {
       "name": "confusion",
@@ -1699,7 +1769,11 @@
       "flags": [
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "confuse",
+        "chance": 10
+      }
     },
     {
       "name": "constrict",
@@ -1714,7 +1788,14 @@
         "contact",
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "change_target_speed",
+        "chance": 10,
+        "parameters": {
+          "amount": -1
+        }
+      }
     },
     {
       "name": "continental_crush__physical",
@@ -1749,7 +1830,10 @@
       "category": "status",
       "flags": [
         "snatch"
-      ]
+      ],
+      "effect": {
+        "name": "conversion"
+      }
     },
     {
       "name": "conversion_2",
@@ -1762,7 +1846,10 @@
       "category": "status",
       "flags": [
         "ignore-substitute"
-      ]
+      ],
+      "effect": {
+        "name": "conversion_2"
+      }
     },
     {
       "name": "copycat",
@@ -1773,7 +1860,10 @@
       "priority": 0,
       "target": "Self",
       "category": "status",
-      "flags": []
+      "flags": [],
+      "effect": {
+        "name": "copycat"
+      }
     },
     {
       "name": "core_enforcer",
@@ -1787,7 +1877,10 @@
       "flags": [
         "protect",
         "mirror"
-      ]
+      ],
+      "effect": {
+        "name": "core_enforcer"
+      }
     },
     {
       "name": "corkscrew_crash__physical",
@@ -1822,7 +1915,10 @@
       "category": "status",
       "flags": [
         "snatch"
-      ]
+      ],
+      "effect": {
+        "name": "cosmic_power"
+      }
     },
     {
       "name": "cotton_guard",
@@ -1835,7 +1931,13 @@
       "category": "status",
       "flags": [
         "snatch"
-      ]
+      ],
+      "effect": {
+        "name": "change_user_defense",
+        "parameters": {
+          "amount": 3
+        }
+      }
     },
     {
       "name": "cotton_spore",
@@ -1851,7 +1953,13 @@
         "reflectable",
         "mirror",
         "powder"
-      ]
+      ],
+      "effect": {
+        "name": "change_target_speed",
+        "parameters": {
+          "amount": -2
+        }
+      }
     },
     {
       "name": "counter",

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

@@ -8,7 +8,8 @@ public class BulkUp : Script
     /// <inheritdoc />
     public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
     {
-        move.User.ChangeStatBoost(Statistic.Attack, 1, true);
+        EventBatchId eventBatchId = new();
-        move.User.ChangeStatBoost(Statistic.Defense, 1, true);
+        move.User.ChangeStatBoost(Statistic.Attack, 1, true, eventBatchId);
+        move.User.ChangeStatBoost(Statistic.Defense, 1, true, eventBatchId);
     }
 }

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

@@ -0,0 +1,15 @@
+using PkmnLib.Static;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "calm_mind")]
+public class CalmMind : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        EventBatchId eventBatchId = new();
+        move.User.ChangeStatBoost(Statistic.SpecialAttack, 1, true, eventBatchId);
+        move.User.ChangeStatBoost(Statistic.SpecialDefense, 1, true, eventBatchId);
+    }
+}

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

@@ -0,0 +1,7 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "camouflage")]
+public class Camouflage : Script
+{
+    // FIXME: Implement this. How to get the terrain in a sane manner?
+}

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

@@ -0,0 +1,25 @@
+using PkmnLib.Static;
+using PkmnLib.Static.Species;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "captivate")]
+public class Captivate : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var user = move.User;
+        if (target.Gender == Gender.Genderless || target.Gender == user.Gender)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        if (target.ActiveAbility?.Name == "oblivious")
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        target.ChangeStatBoost(Statistic.SpecialAttack, -2, false);
+    }
+}

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

@@ -0,0 +1,13 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "celebrate")]
+public class Celebrate : Script
+{
+    /// <inheritdoc />
+    public override void PreventMoveSelection(IMoveChoice choice, ref bool prevent)
+    {
+        // This move is mostly useless, and it's not worth the effort to implement it.
+        // Prevent it from being selected.
+        prevent = true;
+    }
+}

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

@@ -0,0 +1,79 @@
+using System;
+using System.Collections.Generic;
+using PkmnLib.Static;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+public abstract class ChangeUserStats : Script
+{
+    private readonly Statistic _stat;
+    private sbyte _amount;
+
+    protected ChangeUserStats(Statistic stat)
+    {
+        _stat = stat;
+    }
+
+    /// <inheritdoc />
+    public override void OnInitialize(IReadOnlyDictionary<StringKey, object?>? parameters)
+    {
+        if (parameters == null)
+        {
+            throw new ArgumentNullException(nameof(parameters));
+        }
+
+        if (!parameters.TryGetValue("amount", out var amount) || amount == null)
+        {
+            throw new ArgumentException("Parameter 'amount' is required.");
+        }
+
+        _amount = (sbyte)amount;
+    }
+
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        move.User.ChangeStatBoost(_stat, _amount, true);
+    }
+}
+
+[Script(ScriptCategory.Move, "change_user_attack")]
+public class ChangeUserAttack : ChangeUserStats
+{
+    public ChangeUserAttack() : base(Statistic.Attack)
+    {
+    }
+}
+
+[Script(ScriptCategory.Move, "change_user_defense")]
+public class ChangeUserDefense : ChangeUserStats
+{
+    public ChangeUserDefense() : base(Statistic.Defense)
+    {
+    }
+}
+
+[Script(ScriptCategory.Move, "change_user_special_attack")]
+public class ChangeUserSpecialAttack : ChangeUserStats
+{
+    public ChangeUserSpecialAttack() : base(Statistic.SpecialAttack)
+    {
+    }
+}
+
+[Script(ScriptCategory.Move, "change_user_special_defense")]
+public class ChangeUserSpecialDefense : ChangeUserStats
+{
+    public ChangeUserSpecialDefense() : base(Statistic.SpecialDefense)
+    {
+    }
+}
+
+[Script(ScriptCategory.Move, "change_user_speed")]
+public class ChangeUserSpeed : ChangeUserStats
+{
+    public ChangeUserSpeed() : base(Statistic.Speed)
+    {
+    }
+}

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

@@ -0,0 +1,15 @@
+using PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+using PkmnLib.Static;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "charge")]
+public class Charge : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        move.User.ChangeStatBoost(Statistic.SpecialDefense, 1, true);
+        move.User.Volatile.Add(new ChargeEffect());
+    }
+}

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

@@ -0,0 +1,13 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "chip_away")]
+public class ChipAway : Script
+{
+    /// <inheritdoc />
+    public override void BypassDefensiveStatBoosts(IExecutingMove move, IPokemon target, byte hit, ref bool bypass)
+    {
+        bypass = true;
+    }
+    
+    // TODO: bypass evasion stat.
+}

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

@@ -0,0 +1,7 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "circle_throw")]
+public class CircleThrow : Script
+{
+    // TODO: Implement this. How to handle forced switch?
+}

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

@@ -0,0 +1,15 @@
+using PkmnLib.Static;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "close_combat")]
+public class CloseCombat : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        EventBatchId eventBatchId = new();
+        move.User.ChangeStatBoost(Statistic.Defense, -1, true, eventBatchId);
+        move.User.ChangeStatBoost(Statistic.SpecialDefense, -1, true, eventBatchId);
+    }
+}

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

@@ -0,0 +1,16 @@
+using PkmnLib.Static;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "coil")]
+public class Coil : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        EventBatchId eventBatchId = new();
+        move.User.ChangeStatBoost(Statistic.Attack, 1, true, eventBatchId);
+        move.User.ChangeStatBoost(Statistic.Defense, 1, true, eventBatchId);
+        move.User.ChangeStatBoost(Statistic.Accuracy, 1, true, eventBatchId);
+    }
+}

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

@@ -0,0 +1,13 @@
+using PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "confuse")]
+public class Confuse : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        target.Volatile.Add(new Confusion());
+    }
+}

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

@@ -0,0 +1,20 @@
+using System.Linq;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "conversion")]
+public class Conversion : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var moveType = move.User.Moves.WhereNotNull().FirstOrDefault()?.MoveData.MoveType;
+        if (moveType == null)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        move.User.SetTypes([moveType.Value]);
+    }
+}

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/Conversion2.cs

@@ -0,0 +1,57 @@
+using System.Linq;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "conversion_2")]
+public class Conversion2 : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var previousTurnChoices = target.BattleData?.Battle.PreviousTurnChoices;
+        var nextExecutingChoice = target.BattleData?.Battle.ChoiceQueue?.Peek();
+        var lastMoveByTarget = previousTurnChoices?
+            // The previous turn choices include the choices of the current turn, so we need to have special handling for
+            // the current turn
+            .Select((x, index) =>
+            {
+                // All choices before the current turn are valid
+                if (index < previousTurnChoices.Count - 1)
+                    return x;
+                // If there is no next choice, we're at the end of the list, so we can just return the whole list
+                if (nextExecutingChoice == null)
+                    return x;
+                // Otherwise we determine where the next choice is and return everything before that
+                var indexOfNext = x.IndexOf(nextExecutingChoice);
+                if (indexOfNext == -1)
+                    return x;
+                return x.Take(indexOfNext);
+            })
+            .SelectMany(x => x)
+            // We only want the last move choice by the target
+            .OfType<IMoveChoice>().FirstOrDefault(x => x.User == target);
+        if (lastMoveByTarget == null)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+
+        var typeLibrary = move.User.BattleData!.Battle.Library.StaticLibrary.Types;
+        // Get all types against which the last move would be not very effective
+        var type = typeLibrary.GetAllEffectivenessFromAttacking(lastMoveByTarget.ChosenMove.MoveData.MoveType)
+            .Where(x => x.effectiveness < 1)
+            // Shuffle them randomly, but deterministically
+            .OrderBy(_ => move.User.BattleData.Battle.Random.GetInt())
+            .ThenBy(x => x.type.Value)
+            // And grab the first one
+            .Select(x => x.type)
+            .FirstOrDefault();
+        if (type == null)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        move.User.SetTypes([type]);
+    }
+}

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

@@ -0,0 +1,24 @@
+using System.Linq;
+using PkmnLib.Plugin.Gen7.Scripts.Utils;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "copycat")]
+public class Copycat : Script
+{
+    /// <inheritdoc />
+    public override void ChangeMove(IMoveChoice choice, ref StringKey moveName)
+    {
+        var lastMove = choice.User.BattleData?.Battle.PreviousTurnChoices
+            .SelectMany(x => x)
+            .OfType<IMoveChoice>()
+            .LastOrDefault();
+        if (lastMove == null || !lastMove.ChosenMove.MoveData.CanCopyMove())
+        {
+            choice.Fail();
+            return;
+        }
+        moveName = lastMove.ChosenMove.MoveData.Name;
+    }
+}

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

@@ -0,0 +1,25 @@
+using System.Linq;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "core_enforcer")]
+public class CoreEnforcer : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var battleData = target.BattleData;
+        if (battleData == null)
+            return;
+        var turnChoices = battleData.Battle.PreviousTurnChoices.Last();
+        var currentChoiceIndex = turnChoices.IndexOf(move.MoveChoice);
+        if (currentChoiceIndex == -1 || 
+            !turnChoices.Take(currentChoiceIndex).Any(choice => choice is IMoveChoice or IItemChoice))
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        target.SuppressAbility();
+    }
+}

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

@@ -0,0 +1,15 @@
+using PkmnLib.Static;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "cosmic_power")]
+public class CosmicPower : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        EventBatchId eventBatchId = new();
+        move.User.ChangeStatBoost(Statistic.Defense, 1, true, eventBatchId);
+        move.User.ChangeStatBoost(Statistic.SpecialDefense, 1, true, eventBatchId);
+    }
+}

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

@@ -0,0 +1,18 @@
+using System;
+using PkmnLib.Static;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "reset_target_stats")]
+public class ResetTargetStats : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        EventBatchId eventBatchId = new();
+        foreach (Statistic stat in Enum.GetValues(typeof(Statistic)))
+        {
+            target.ChangeStatBoost(stat, (sbyte)-target.StatBoost.GetStatistic(stat), true, eventBatchId);
+        }
+    }
+}

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

@@ -0,0 +1,30 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+[Script(ScriptCategory.Pokemon, "charge_effect")]
+public class ChargeEffect : Script
+{
+    private bool _turnOfUse = true;
+
+    /// <inheritdoc />
+    public override void ChangeDamageModifier(IExecutingMove move, IPokemon target, byte hit, ref float modifier)
+    {
+        var library = target.BattleData?.Battle.Library;
+        if (library == null)
+            return;
+        if (!library.StaticLibrary.Types.TryGetTypeIdentifier("electric", out var electricType))
+            return;
+        if (move.UseMove.MoveType == electricType)
+            modifier *= 2;
+    }
+
+    /// <inheritdoc />
+    public override void OnEndTurn(IBattle battle)
+    {
+        if (_turnOfUse)
+        {
+            _turnOfUse = false;
+            return;
+        }
+        RemoveSelf();
+    }
+}

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

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

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

@@ -36,7 +36,7 @@ public class Hail : Script
                     continue;
                 if (pokemon.Types.Contains(iceType))
                     continue;
-                if (_hailIgnoreAbilities.Contains(pokemon.ActiveAbility.Name))
+                if (pokemon.ActiveAbility != null && _hailIgnoreAbilities.Contains(pokemon.ActiveAbility.Name))
                     continue;
 
                 var maxHealth = pokemon.BoostedStats.Hp;