More abilities

PkmnLib.Dynamic/BattleFlow/MoveTurnExecutor.cs

@@ -76,7 +76,8 @@ public static class MoveTurnExecutor
             return;
 
         byte ppUsed = 1;
-        // TODO: Modify the PP used by the move.
+        executingMove.RunScriptHook(x => x.ModifyPPUsed(executingMove, ref ppUsed));
+        targets.WhereNotNull().RunScriptHook(x => x.ModifyPPUsedForIncomingMove(executingMove, ref ppUsed));
         if (!executingMove.ChosenMove.TryUse(ppUsed))
             return;
 

PkmnLib.Dynamic/Models/Battle.cs

@@ -311,7 +311,6 @@ public class BattleImpl : ScriptSource, IBattle
 
         if (choice is IMoveChoice moveChoice)
         {
-            // TODO: Hook to change number of PP needed.
             if (moveChoice.ChosenMove.CurrentPp < 1)
                 return false;
             if (!TargetResolver.IsValidTarget(moveChoice.TargetSide, moveChoice.TargetPosition,

PkmnLib.Dynamic/Models/Pokemon.cs

@@ -1072,6 +1072,11 @@ public class PokemonImpl : ScriptSource, IPokemon
 
         // Allow scripts to trigger based on the faint.
         this.RunScriptHook(script => script.OnFaint(this, source));
+        foreach (var ally in BattleData.BattleSide.Pokemon.WhereNotNull().Where(x => x != this))
+        {
+            ally.RunScriptHook(script => script.OnAllyFaint(ally, this));
+        }
+
         // Make sure the OnRemove script is run.
         this.RunScriptHook(script => script.OnRemove());
 

PkmnLib.Dynamic/ScriptHandling/Script.cs

@@ -562,6 +562,13 @@ public abstract class Script : IDeepCloneable
     {
     }
 
+    /// <summary>
+    /// This function is triggered on a Pokemon when an ally Pokemon faints.
+    /// </summary>
+    public virtual void OnAllyFaint(IPokemon ally, IPokemon faintedPokemon)
+    {
+    }
+
     /// <summary>
     /// This function is triggered on a Pokemon and its parents when the given Pokemon switches out
     /// of the battlefield.
@@ -801,4 +808,18 @@ public abstract class Script : IDeepCloneable
     public virtual void OnAfterHeldItemChange(IPokemon pokemon, IItem? previous, IItem? item)
     {
     }
+
+    /// <summary>
+    /// This function allows a script to modify the PP used by a move.
+    /// </summary>
+    public virtual void ModifyPPUsed(IExecutingMove executingMove, ref byte ppUsed)
+    {
+    }
+
+    /// <summary>
+    /// This function allows a script to modify the PP used by an incoming move. This is used for abilities such as Pressure.
+    /// </summary>
+    public virtual void ModifyPPUsedForIncomingMove(IExecutingMove executingMove, ref byte ppUsed)
+    {
+    }
 }