Added first script, bugfixes

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

@@ -77,7 +77,7 @@ public class Gen7DamageCalculator(bool hasRandomness) : IDamageCalculator
     {
         if (executingMove.UseMove.Category == MoveCategory.Status)
             return 0;
-        var basePower = hitData.BasePower;
+        var basePower = executingMove.UseMove.BasePower;
         executingMove.RunScriptHook(script =>
             script.ChangeBasePower(executingMove, target, hitNumber, ref basePower));
         return basePower;

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

@@ -0,0 +1,25 @@
+using PkmnLib.Dynamic.Models;
+using PkmnLib.Dynamic.ScriptHandling;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Moves;
+
+/// <summary>
+/// The user nimbly strikes the target. If the user is not holding an item, this attack inflicts massive damage. 
+/// </summary>
+/// <remarks>
+/// Does double base power if the user is not holding an item.
+/// </remarks>
+[Script(ScriptCategory.Move, "acrobatics")]
+public class Acrobatics : Script
+{
+    /// <inheritdoc />
+    public override string Name => "acrobatics";
+
+    /// <inheritdoc />
+    public override void ChangeBasePower(IExecutingMove move, IPokemon target, byte hit, ref byte basePower)
+    {
+        if (move.User.HeldItem == null)
+            basePower = basePower.MultiplyOrMax(2);
+    }
+}