Reworking item spawn, adding item conversion.

Assets/Scripts/Products/ProductSpawnSchedule.cs

@@ -0,0 +1,36 @@
+using System;
+using UnityEngine;
+using Random = UnityEngine.Random;
+
+[CreateAssetMenu(fileName = "New Product Spawn Schedule", menuName = "Data/Product Spawn Schedule", order = 0)]
+public class ProductSpawnSchedule : ScriptableObject
+{
+    [Serializable]
+    public struct Product
+    {
+        public GameObject Prefab;
+        [Range(0,100)]
+        public int Probability;
+    }
+
+    public Product[] Products;
+    
+    public GameObject GetRandomProduct()
+    {
+        float randomValue = Random.Range(0, 100);
+        float sum = 0;
+        
+        for (var i = 0; i < Products.Length; i++)
+        {
+            var product = Products[i];
+
+            sum += product.Probability;
+            if (randomValue <= sum)
+            {
+                return product.Prefab;
+            }
+        }
+
+        return null;
+    }
+}