More move effects

Plugins/PkmnLib.Plugin.Gen7/Scripts/Moves/FreezeDry.cs

@@ -0,0 +1,41 @@
+using System.Linq;
+
+namespace PkmnLib.Plugin.Gen7.Scripts.Moves;
+
+[Script(ScriptCategory.Move, "freeze_dry")]
+public class FreezeDry : Script
+{
+    /// <inheritdoc />
+    public override void ChangeEffectiveness(IExecutingMove move, IPokemon target, byte hit, ref float effectiveness)
+    {
+        var battleData = target.BattleData;
+        if (battleData == null)
+            return;
+
+        var typeLibrary = battleData.Battle.Library.StaticLibrary.Types;
+        if (!typeLibrary.TryGetTypeIdentifier("water", out var waterType))
+            return;
+
+        if (target.Types.Contains(waterType))
+        {
+            var effectivenessWithoutWater = target.Types
+                .Where(x => x != waterType)
+                .Select(x => typeLibrary.GetEffectiveness(x, target.Types))
+                .Aggregate(1f, (a, b) => a * b);
+            effectiveness = effectivenessWithoutWater * 2;
+        }
+    }
+
+    /// <inheritdoc />
+    public override void OnSecondaryEffect(IExecutingMove move, IPokemon target, byte hit)
+    {
+        var battleData = target.BattleData;
+        if (battleData == null)
+            return;
+
+        if (battleData.Battle.Random.EffectChance(10, move, target, hit))
+        {
+            target.SetStatus("frozen");
+        }
+    }
+}