MAJOR: Re-organize entire project

Assets/Scripts/GameManager/GameManager.cs

@@ -0,0 +1,68 @@
+using System.Collections;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+namespace Scampz.GameJam
+{
+  public class GameManager : MonoBehaviour
+  {
+    public static GameManager Instance;
+    public Animator animator;
+
+    void Awake()
+    {
+      if (Instance == null)
+      {
+        Instance = this;
+      }
+    }
+
+    void OnEnable()
+    {
+      //SceneManager.sceneLoaded += OnSceneLoaded;
+    }
+
+    void OnDisable()
+    {
+      //SceneManager.sceneLoaded -= OnSceneLoaded;
+    }
+
+    public void LoadScene(string sceneName, LoadSceneMode loadSceneMode)
+    {
+      StartCoroutine(LoadSceneAsync(sceneName, loadSceneMode));
+    }
+
+    public void UnloadScene(string sceneName)
+    {
+      StartCoroutine(UnloadSceneAsync(sceneName));
+    }
+
+    private IEnumerator LoadSceneAsync(string sceneName, LoadSceneMode loadSceneMode)
+    {
+      yield return null;
+
+      var loadSceneOperation = SceneManager.LoadSceneAsync(sceneName, loadSceneMode);
+      loadSceneOperation.allowSceneActivation = false;
+      while (!loadSceneOperation.isDone)
+      {
+        if (loadSceneOperation.progress >= 0.9f)
+          break;
+      }
+
+      loadSceneOperation.allowSceneActivation = true;
+      yield return loadSceneOperation;
+    }
+
+    private IEnumerator UnloadSceneAsync(string sceneName)
+    {
+      yield return null;
+      if (SceneManager.GetSceneByName(sceneName).IsValid())
+        SceneManager.UnloadSceneAsync(sceneName);
+    }
+
+    private void OnSceneLoaded(Scene scene, LoadSceneMode loadSceneMode)
+    {
+      //BGMManager.Instance.PlaySong();
+    }
+  }
+}