More moves implemented

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

@@ -0,0 +1,21 @@
+using System.Collections.Generic;
+using PkmnLib.Static;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+
+[Script(ScriptCategory.Pokemon, "smack_down")]
+public class SmackDownEffect : Script
+{
+    /// <inheritdoc />
+    public override void ChangeTypesForIncomingMove(IExecutingMove executingMove, IPokemon target, byte hitIndex,
+        IList<TypeIdentifier> types)
+    {
+        var typeLibrary = target.Library.StaticLibrary.Types;
+
+        if (executingMove.UseMove.MoveType.Name != "ground")
+            return;
+        // Remove all types that are immune to ground moves
+        types.RemoveAll(x => typeLibrary.GetSingleEffectiveness(executingMove.UseMove.MoveType, x) == 0);
+    }
+}