init

src/Actions/PhysicsDefenceActionCard.cs

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+using Cthangover.Core.Characters;
+
+namespace Cthangover.CardBattle.Actions
+{
+
+    /// <summary>
+    /// Executor that adds a fixed amount of defence to the target character.
+    /// Defence acts as a damage-absorbing shield that is consumed before health when the
+    /// character takes damage (see <see cref="PhysicsDamageActionCard"/>). The defence delta
+    /// comes from the <c>"Defence"</c> property on the action card.
+    /// Registered in <see cref="CardBattleActionProvider"/> under <c>"physics/defence"</c>.
+    /// </summary>
+    public class PhysicsDefenceActionCard : ActionBase
+    {
+
+        /// <summary>
+        /// Unique identifier registered in <see cref="CardBattleActionProvider"/> as <c>"physics/defence"</c>.
+        /// </summary>
+        public override string ID => "PhysicsDefenceActionCard";
+        
+        /// <summary>
+        /// Adds a flat defence value to <paramref name="target"/> after deducting action points
+        /// from <paramref name="user"/>. The returned <see cref="ChangedAttributes"/> carries the
+        /// defence delta for floating text display.
+        /// </summary>
+        public override ChangedAttributes Execute(ActionCharacter actionCard, Character user, Character target)
+        {
+            if (target == null || user == null || !CheckRequiredAndUsePoint(actionCard, user))
+                return new ChangedAttributes { Result = false };
+
+            var defenceDelta = actionCard.GetInt("Defence");
+            target.Attributes.Defence.Value += defenceDelta;
+            
+            return new ChangedAttributes { Result = true, Target = { Defence = defenceDelta}};
+        }
+
+    }
+
+}