Support for Bide

PkmnLib.Dynamic/Models/Battle.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using PkmnLib.Dynamic.Events;
 using PkmnLib.Dynamic.Libraries;
 using PkmnLib.Dynamic.Models.BattleFlow;
@@ -92,6 +93,8 @@ public interface IBattle : IScriptSource, IDeepCloneable
     /// </summary>
     void ValidateBattleState();
 
+    bool HasForcedTurn(IPokemon pokemon, [NotNullWhen(true)] out ITurnChoice? choice);
+    
     /// <summary>
     /// Checks whether a choice is actually possible.
     /// </summary>
@@ -229,11 +232,31 @@ public class BattleImpl : ScriptSource, IBattle
         HasEnded = true;
     }
 
+    /// <inheritdoc />
+    public bool HasForcedTurn(IPokemon pokemon, [NotNullWhen(true)] out ITurnChoice? choice)
+    {
+        var battleData = pokemon.BattleData;
+        if (battleData == null)
+        {
+            choice = null;
+            return false;
+        }
+        
+        ITurnChoice? forcedChoice = null;
+        pokemon.RunScriptHook(
+            script => script.ForceTurnSelection(battleData.SideIndex, battleData.Position, ref forcedChoice));
+        choice = forcedChoice;
+        return choice != null;
+    }
+
     /// <inheritdoc />
     public bool CanUse(ITurnChoice choice)
     {
         if (!choice.User.IsUsable)
             return false;
+        if (HasForcedTurn(choice.User, out var forcedChoice) && choice != forcedChoice)
+            return false;
+        
         if (choice is IMoveChoice moveChoice)
         {
             // TODO: Hook to change number of PP needed.

PkmnLib.Dynamic/ScriptHandling/Script.cs

@@ -83,6 +83,10 @@ public abstract class Script : IDeepCloneable
     public virtual void PreventMoveSelection(IMoveChoice choice, ref bool prevent)
     {
     }
+    
+    public virtual void ForceTurnSelection(byte sideIndex, byte position, ref ITurnChoice? choice)
+    {
+    }
 
     /// <summary>
     /// This function is ran just before the start of the turn. Everyone has made its choices here,

PkmnLib.Tests/Data/Moves.json

@@ -810,21 +810,27 @@
       "flags": [
         "mirror",
         "ignore-substitute"
-      ]
+      ],
+      "effect": {
+        "name": "bestow"
+      }
     },
     {
       "name": "bide",
       "type": "normal",
       "power": 0,
       "pp": 10,
-      "accuracy": 0,
+      "accuracy": 255,
       "priority": 1,
       "target": "Self",
       "category": "physical",
       "flags": [
         "contact",
         "protect"
-      ]
+      ],
+      "effect": {
+        "name": "bide"
+      }
     },
     {
       "name": "bind",

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

@@ -0,0 +1,25 @@
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Dynamic.ScriptHandling;
+using PkmnLib.Dynamic.ScriptHandling.Registry;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "bestow")]
+public class Bestow : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var user = move.User;
+        var userHeldItem = user.HeldItem;
+        var targetHeldItem = target.HeldItem;
+        
+        if (userHeldItem == null || targetHeldItem != null)
+        {
+            move.GetHitData(target, hit).Fail();
+            return;
+        }
+        
+        _ = target.SetHeldItem(userHeldItem);
+    }
+}

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

@@ -0,0 +1,30 @@
+using System.Linq;
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Dynamic.ScriptHandling;
+using PkmnLib.Dynamic.ScriptHandling.Registry;
+using PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "bide")]
+public class Bide : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var bideEffect = move.User.Volatile.Get<BideEffect>();
+        if (bideEffect == null)
+        {
+            bideEffect = new BideEffect(move.User);
+            move.User.Volatile.Add(bideEffect);
+        }
+
+        bideEffect.Turns += 1;
+        if (bideEffect.Turns < 2)
+            return;
+        var lastPokemon = bideEffect.HitBy.LastOrDefault(x => x.BattleData?.IsOnBattlefield == true);
+        lastPokemon?.Damage(bideEffect.DamageTaken, DamageSource.MoveDamage);
+
+        RemoveSelf();
+    }
+}

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

@@ -0,0 +1,69 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Dynamic.Models.Choices;
+using PkmnLib.Dynamic.ScriptHandling;
+using PkmnLib.Dynamic.ScriptHandling.Registry;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+[Script(ScriptCategory.Pokemon, "bide")]
+public class BideEffect : Script
+{
+    private readonly IPokemon? _owner;
+    public byte Turns;
+    public uint DamageTaken;
+    public readonly List<IPokemon> HitBy = [];
+
+    private BideEffect()
+    {
+    }
+    
+    public BideEffect(IPokemon owner)
+    {
+        _owner = owner;
+    }
+
+    /// <inheritdoc />
+    public override void OnIncomingHit(IExecutingMove move, IPokemon target, byte hit)
+    {
+        HitBy.Add(move.User);
+    }
+
+    /// <inheritdoc />
+    public override void OnDamage(IPokemon pokemon, DamageSource source, uint oldHealth, uint newHealth)
+    {
+        DamageTaken += oldHealth - newHealth;
+    }
+    
+    private ITurnChoice? _choice;
+
+    /// <inheritdoc />
+    public override void ForceTurnSelection(byte sideIndex, byte position, ref ITurnChoice? choice)
+    {
+        if (_owner == null)
+            return;
+        var ownerBattleData = _owner.BattleData;
+        if (ownerBattleData == null)
+            return;
+        if (ownerBattleData.SideIndex != sideIndex || ownerBattleData.Position != position)
+            return;
+        if (_choice != null)
+        {
+            choice = _choice;
+            return;
+        }
+        
+        var bideMove = _owner.Moves.FirstOrDefault(x => x?.MoveData.Name == "bide");
+        if (bideMove == null)
+        {
+            if (!_owner.Library.StaticLibrary.Moves.TryGet("bide", out var moveData))
+                throw new Exception("Move 'bide' not found in move library.");
+            
+            bideMove = new LearnedMoveImpl(moveData, MoveLearnMethod.Unknown);
+        }
+
+        choice = _choice = new MoveChoice(_owner, bideMove, sideIndex, position);
+    }
+}