Even more abilities

Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/GrassySurge.cs

@@ -0,0 +1,25 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Grassy Surge is an ability that creates Grassy Terrain when the Pokémon enters battle.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Grassy_Surge_(Ability)">Bulbapedia - Grassy Surge</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "grassy_surge")]
+public class GrassySurge : Script
+{
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        var battleData = pokemon.BattleData;
+        if (battleData == null)
+            return;
+
+        EventBatchId batchId = new();
+        battleData.Battle.EventHook.Invoke(new AbilityTriggerEvent(pokemon)
+        {
+            BatchId = batchId,
+        });
+        battleData.Battle.SetTerrain(ScriptUtils.ResolveName<Terrain.GrassyTerrain>(), batchId);
+    }
+}