Implements more abilities

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

@@ -0,0 +1,32 @@
+namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
+
+/// <summary>
+/// Emergency Exit is an ability that makes the Pokémon switch out when its HP drops below half.
+/// This ability is similar to Wimp Out and is exclusive to Golisopod.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Emergency_Exit_(Ability)">Bulbapedia - Emergency Exit</see>
+/// </summary>
+[Script(ScriptCategory.Ability, "emergency_exit")]
+public class EmergencyExit : Script
+{
+    /// <inheritdoc />
+    public override void OnDamage(IPokemon pokemon, DamageSource source, uint oldHealth, uint newHealth)
+    {
+        if (pokemon.BattleData is null)
+            return;
+        if (source is DamageSource.Confusion)
+            return;
+
+        var oldHealthFraction = (float)oldHealth / pokemon.MaxHealth;
+        var newHealthFraction = (float)newHealth / pokemon.MaxHealth;
+        if (!(oldHealthFraction >= 0.5f) || !(newHealthFraction < 0.5f))
+            return;
+
+        if (pokemon.BattleData.Battle.IsWildBattle)
+        {
+            pokemon.BattleData.Battle.ForceEndBattle();
+            return;
+        }
+        pokemon.BattleData.BattleSide.SwapPokemon(pokemon.BattleData.Position, null);
+    }
+}