Added example of the Facade pattern

Author: Habrador

Assets/Patterns/22. Facade.meta

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Facade.RandomNumbers
+{
+    public class RandomNumberFacade
+    {
+        private static IRandomNumberGenerator rng;
+
+
+        static RandomNumberFacade()
+        {
+            //rng = new RandomNumbersNative();
+            rng = new RandomNumbersUnity();
+        }
+
+
+        public static void InitSeed(int seed)
+        {
+            rng.InitSeed(seed);
+        }
+
+
+        public static float GetRandom01()
+        {
+            return rng.GetRandom01();
+        }
+
+
+        public static float GetRandom(float min, float max)
+        {
+            return rng.GetRandom(min, max);
+        }
+
+
+        public static int GetRandomInt(int min, int max)
+        {
+            return rng.GetRandomInt(min, max);
+        }
+    }
+}

Assets/Patterns/22. Facade/Random numbers.meta

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Facade.RandomNumbers
+{
+    public interface IRandomNumberGenerator
+    {
+        public void InitSeed(int seed);
+
+        public float GetRandom01();
+
+        public float GetRandom(float min, float max);
+
+        public int GetRandomInt(int min, int max);
+    }
+}

Assets/Patterns/22. Facade/Random numbers/Facade.meta

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Facade.RandomNumbers
+{
+    //Generate random numbers by using C#'s System.Random
+    public class RandomNumbersNative : IRandomNumberGenerator
+    {
+        private System.Random rng;
+
+        public RandomNumbersNative()
+        {
+            rng = new System.Random();
+        }
+
+        public float GetRandom(float min, float max)
+        {
+            return (float)((rng.NextDouble() * (max - min)) + min);
+        }
+
+        public float GetRandom01()
+        {
+            return (float)rng.NextDouble();
+        }
+
+        public int GetRandomInt(int min, int max)
+        {
+            return rng.Next(min, max);
+        }
+
+        public void InitSeed(int seed)
+        {
+            rng = new System.Random(seed);
+        }
+    }
+}

Assets/Patterns/22. Facade/Random numbers/Facade/RandomNumberFacade.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Facade.RandomNumbers
+{
+    //Geerate random numbers by using Unity's Random.Range
+    public class RandomNumbersUnity : IRandomNumberGenerator
+    {
+        public float GetRandom(float min, float max)
+        {
+            return Random.Range(min, max);
+        }
+
+        public float GetRandom01()
+        {
+            return Random.Range(0f, 1f);
+        }
+
+        public int GetRandomInt(int min, int max)
+        {
+            return Random.Range(min, max);
+        }
+
+        public void InitSeed(int seed)
+        {
+            Random.InitState(seed);
+        }
+    }
+}

Assets/Patterns/22. Facade/Random numbers/Facade/RandomNumberFacade.cs.meta

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using Facade.RandomNumbers;
+
+//Example of the Facade programming pattern (and possibly Adapter because they are very similar)
+public class RandomNumbersController : MonoBehaviour
+{
+    private void Start()
+    {
+        RandomNumberFacade.InitSeed(0);
+
+        Debug.Log("Float: 0 -> 1");
+
+        for (int i = 0; i < 5; i++)
+        {
+            Debug.Log(RandomNumberFacade.GetRandom01());
+        }
+
+        Debug.Log("Float: -1 -> 2");
+
+        for (int i = 0; i < 10; i++)
+        {
+            Debug.Log(RandomNumberFacade.GetRandom(-1f, 2f));
+        }
+
+        Debug.Log("Integer: -10 -> 20");
+
+        for (int i = 0; i < 10; i++)
+        {
+            Debug.Log(RandomNumberFacade.GetRandomInt(-10, 21));
+        }
+    }
+
+
+
+}