Added code to illustrate Flyweight pattern by sharing data

Author: Habrador

Assets/Patterns/2. Flyweight.meta

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Flyweight
+{
+    //Data that can be shared across all objects
+    public class Data
+    {
+        private double number1 = 5d;
+        private double number2 = 5d;
+        private double number3 = 5d;
+        private double number4 = 5d;
+        private double number5 = 5d;
+        private double number6 = 5d;
+        private double number7 = 5d;
+        private double number8 = 5d;
+        private double number9 = 5d;
+        private double number10 = 5d;
+        private double number11 = 5d;
+        private double number12 = 5d;
+        private double number13 = 5d;
+        private double number14 = 5d;
+        private double number15 = 5d;
+        private double number16 = 5d;
+        private double number17 = 5d;
+        private double number18 = 5d;
+        private double number19 = 5d;
+        private double number20 = 5d;
+    }
+}

Assets/Patterns/2. Flyweight/Data.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Flyweight
+{
+    public class Flyweight
+    {
+        //Data for each individual object
+        private float health;
+
+        //This is the data that's being shared among all objects so you have to inject it in the constructor
+        private Data data;
+
+
+        public Flyweight(Data data)
+        {
+            health = Random.Range(10f, 100f);
+
+            this.data = data;
+        }
+    }
+}

Assets/Patterns/2. Flyweight/Data.cs.meta

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Flyweight
+{
+    //Illustrates the flyweight pattern
+    //Open the profiler and click on Memory to see how much memory is being used
+    //Switch between Heavy and Flyweight to compare and you should see that the difference is several hundred megabytes even though the data in this case is just 20 doubles
+    public class FlyweightController : MonoBehaviour
+    {
+        private List<Heavy> heavyObjects = new List<Heavy>();
+
+        private List<Flyweight> flyweightObjects = new List<Flyweight>();
+
+
+        void Start()
+        {
+            int numberOfObjects = 1000000;
+
+
+            //Generate Heavy objects that doesn't share any data
+            for (int i = 0; i < numberOfObjects; i++)
+            {
+                Heavy newHeavy = new Heavy();
+
+                heavyObjects.Add(newHeavy);
+            }
+
+
+            //Generate Flyweight objects
+
+            //Generate the data that's being shared among all objects
+            //Data data = new Data();
+
+            //for (int i = 0; i < numberOfObjects; i++)
+            //{
+            //    Flyweight newFlyweight = new Flyweight(data);
+
+            //    flyweightObjects.Add(newFlyweight);
+            //}
+        }
+    }
+}

Assets/Patterns/2. Flyweight/Flyweight.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Flyweight
+{
+    //This class doesn't share any data among all objects
+    public class Heavy
+    {
+        private float health;
+
+        private Data data;
+
+
+        public Heavy()
+        {
+            health = Random.Range(10f, 100f);
+
+            data = new Data();
+        }
+    }
+}