Random Manager (#37)

* Base Commit : Random Manager

* Cleanup

* Updated Changelog

CHANGELOG.md

 
 * Added generic `bool Manager.TryGet<T>(out T manager)`
 * Added `SimplePlayerInput` to supersede `KeyboardGamepadPlayerInput` 
+* Added new **RandomManager** and **SetRandomSeedAction**: Enables setting seeds for the `UnityEngine.Random`
 
 #### Fixed
 

Resources/Default_RandomManager.prefab

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Runtime/LevelScripting/Actions/SetRandomSeedAction.cs

+using NaughtyAttributes;
+using System;
+using UnityEngine;
+
+namespace GameplayIngredients.Actions
+{
+    public class SetRandomSeedAction : ActionBase
+    {
+        [Tooltip("Whether to set a new random seed, or a fixed seed")]
+        public bool newRandomSeed;
+        [DisableIf("newRandomSeed")]
+        [Tooltip("If New Random Seed is False. the new Random seed to apply")]
+        public int newSeed;
+
+        public override void Execute(GameObject instigator = null)
+        {
+            if(Manager.TryGet(out RandomManager randomManager))
+            {
+                if (newRandomSeed)
+                    randomManager.SetRandomSeed(new System.Random((int)(DateTime.Now.Ticks - new DateTime(2021,1,1).Ticks)).Next());
+                else
+                    randomManager.SetRandomSeed(newSeed);
+            }
+        }
+    }
+}
+
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Runtime/Managers/Implementations/RandomManager.cs

+using UnityEngine;
+
+namespace GameplayIngredients
+{
+    [ManagerDefaultPrefab("RandomManager")]
+    public class RandomManager : Manager
+    {
+        public bool setInitialSeed = false;
+        public int initialSeed = 0;
+
+        public int currentSeed { get; private set; }
+
+        void Awake()
+        {
+            if (setInitialSeed)
+                SetRandomSeed(initialSeed);
+        }
+
+        public void SetRandomSeed(int seed)
+        {
+            Random.InitState(seed);
+            currentSeed = seed;
+        }
+    }
+}
+
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