Even more moves

Plugins/PkmnLib.Plugin.Gen7/Scripts/Side/SpikesEffect.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using PkmnLib.Static.Utils;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Side;
+
+[Script(ScriptCategory.Side, "spikes")]
+public class SpikesEffect : Script
+{
+    private int _layers = 1;
+
+    /// <inheritdoc />
+    public override void Stack()
+    {
+        if (_layers < 3)
+            _layers++;
+    }
+
+    /// <inheritdoc />
+    public override void OnSwitchIn(IPokemon pokemon, byte position)
+    {
+        if (pokemon.IsFloating)
+            return;
+
+        var modifier = _layers switch
+        {
+            1 => 1 / 16f,
+            2 => 3 / 16f,
+            3 => 1 / 4f,
+            _ => throw new ArgumentOutOfRangeException(),
+        };
+        var damage = (uint)(pokemon.MaxHealth * modifier);
+
+        EventBatchId eventBatch = new();
+        pokemon.Damage(damage, DamageSource.Misc, eventBatch);
+        pokemon.BattleData?.Battle.EventHook.Invoke(new DialogEvent("spikes_damage", new Dictionary<string, object>
+        {
+            { "pokemon", pokemon },
+        })
+        {
+            BatchId = eventBatch,
+        });
+    }
+}