Implements more move effects

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

@@ -0,0 +1,36 @@
+using System.Collections.Generic;
+using System.Linq;
+using PkmnLib.Plugin.Gen7.Scripts.Pokemon;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "gravity")]
+public class Gravity : Script
+{
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var battleData = target.BattleData;
+        if (battleData == null)
+            return;
+
+        battleData.Battle.Volatile.StackOrAdd("gravity", () =>
+        {
+            battleData.Battle.Library.ScriptResolver.TryResolve(ScriptCategory.Battle, "gravity",
+                new Dictionary<StringKey, object?>(), out var script);
+            return script;
+        });
+
+        foreach (var pokemon in battleData.Battle.Sides.SelectMany(x => x.Pokemon).WhereNotNull())
+        {
+            var chargeBounceEffect = ScriptUtils.ResolveName<ChargeBounceEffect>();
+            if (pokemon.Volatile.Contains(chargeBounceEffect))
+                pokemon.Volatile.Remove(chargeBounceEffect);
+            var flyEffect = ScriptUtils.ResolveName<ChargeFlyEffect>();
+            if (pokemon.Volatile.Contains(flyEffect))
+                pokemon.Volatile.Remove(flyEffect);
+            // TODO: Sky Drop
+        }
+    }
+}