Implements more abilities

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

@@ -0,0 +1,25 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Early Bird is an ability that allows the Pokémon to wake up from sleep twice as fast.
+/// This means the number of turns the Pokémon stays asleep is halved, rounded down.
+/// This ability is commonly associated with Kangaskhan and Dodrio.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Early_Bird_(Ability)">Bulbapedia - Early Bird</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "early_bird")]
+public class EarlyBird : Script
+{
+    /// <inheritdoc />
+    public override void CustomTrigger(StringKey eventName, IDictionary<StringKey, object?>? parameters)
+    {
+        if (eventName != CustomTriggers.ModifySleepTurns)
+            return;
+        if (parameters == null)
+            return;
+        if (parameters.TryGetValue("turns", out var turnsObj) && turnsObj is int turns)
+        {
+            parameters["turns"] = turns / 2;
+        }
+    }
+}