Add implementation of cauldron and catalyst

Assets/Scripts/Catalyst/Catalyst.cs

@@ -0,0 +1,35 @@
+using UnityEngine;
+using FractionGame.Utility;
+
+namespace FractionGame.Ingredients
+{
+    public class Catalyst : Draggable, IIngredient
+    {
+        [SerializeField] private int multiplierNumerator = 1;
+        [SerializeField] private int multiplierDenominator = 1;
+        [SerializeField] private string catalystName = "Catalyst";
+
+        public Fraction Multiplier => new Fraction(multiplierNumerator, multiplierDenominator);
+
+        public Fraction Value
+        {
+            get
+            {
+                return new Fraction(0, 1);
+            }
+        }
+
+        public IngredientType Type => IngredientType.CATALYST;
+
+        public string Name => catalystName;
+
+        void Start()
+        {
+            if (multiplierDenominator == 0)
+            {
+                Debug.LogError("Catalyst denominator cannot be zero.");
+                multiplierDenominator = 1;
+            }
+        }
+    }
+}

Assets/Scripts/Cauldron/Cauldron.cs

@@ -13,20 +13,43 @@ public class Cauldron : MonoBehaviour
         public Fraction Value => value;
         public IReadOnlyList<IIngredient> Ingredients => ingredients.AsReadOnly();
 
-        public void AddIngredient(IIngredient ingredient)
-        {
-            if (ingredient == null)
+       public void AddIngredient(IIngredient ingredient)
+{
+    if (ingredient == null)
+    {
+        Debug.LogWarning("Tried to add a null ingredient to the cauldron.");
+        return;
+    }
+
+    switch (ingredient.Type)
+    {
+        case IngredientType.CATALYST:
+            // Must cast to access multiplier
+            if (ingredient is Catalyst catalyst)
             {
-                Debug.LogWarning("Tried to add a null ingredient to the cauldron.");
-                return;
+                value = value * catalyst.Multiplier;
+                Debug.Log($"Catalyst '{catalyst.Name}' applied. Multiplier: {catalyst.Multiplier}. New total: {value}");
             }
+            else
+            {
+                Debug.LogError("Ingredient is marked as CATALYST but not a Catalyst instance.");
+            }
+            break;
 
+        case IngredientType.PETAL:
             ingredients.Add(ingredient);
             value += ingredient.Value;
-
             Debug.Log($"Added {ingredient.Type} '{ingredient.Name}' with value {ingredient.Value}. Total: {value}");
-        }
+            break;
 
+        default:
+            Debug.LogWarning($"Unhandled ingredient type: {ingredient.Type}");
+            break;
+    }
+
+    // Optional: destroy used object
+    Destroy((ingredient as MonoBehaviour)?.gameObject);
+}
         public void Subtraction()
         {
             if (ingredients.Count < 2)
@@ -43,6 +66,8 @@ public void Subtraction()
 
             value = result;
             Debug.Log($"Performed subtraction. Resulting value: {value}");
+
+
         }
 
         public void ResetCauldron()

Assets/Scripts/Utility/Fraction.cs

@@ -51,7 +51,7 @@ public override string ToString()
         {
             return $"{numerator}/{denominator}";
         }
-        
+
         public static Fraction operator +(Fraction a, Fraction b)
         {
             int numerator = a.numerator * b.denominator + b.numerator * a.denominator;
@@ -61,9 +61,13 @@ public override string ToString()
 
         public static Fraction operator -(Fraction a, Fraction b)
         {
-          int numerator = a.numerator * b.denominator - b.numerator * a.denominator;
-           int denominator = a.denominator * b.denominator;
-          return new Fraction(numerator, denominator);
+            int numerator = a.numerator * b.denominator - b.numerator * a.denominator;
+            int denominator = a.denominator * b.denominator;
+            return new Fraction(numerator, denominator);
+        }
+        public static Fraction operator *(Fraction a, Fraction b)
+        {
+            return new Fraction(a.Numerator * b.Numerator, a.Denominator * b.Denominator);
         }
 
     }