Implements more abilities

Plugins/PkmnLib.Plugin.Gen7/Scripts/Weather/PrimordialSea.cs

@@ -0,0 +1,29 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Weather;
+
+[Script(ScriptCategory.Weather, "primordial_sea")]
+public class PrimordialSea : Script
+{
+    private HashSet<IPokemon> _placers = new();
+
+    public void MarkAsPlaced(IPokemon pokemon)
+    {
+        _placers.Add(pokemon);
+    }
+
+    /// <inheritdoc />
+    public override void OnSwitchOut(IPokemon oldPokemon, byte position)
+    {
+        _placers.Remove(oldPokemon);
+        if (_placers.Count == 0)
+            oldPokemon.BattleData?.Battle.SetWeather(null, 0);
+    }
+
+    /// <inheritdoc />
+    public override void PreventWeatherChange(StringKey? weatherName, ref bool preventWeatherChange)
+    {
+        if (weatherName == ScriptUtils.ResolveName<DesolateLands>() ||
+            weatherName == ScriptUtils.ResolveName<StrongWinds>())
+            return;
+        preventWeatherChange = true;
+    }
+}