Initial commit

Assets/Scripts/UI/NonDrawingGraphic.cs

@@ -0,0 +1,21 @@
+using UnityEngine.TestTools;
+using UnityEngine.UI;
+
+namespace BracerLib.UI
+{
+    /// A concrete subclass of the Unity UI `Graphic` class that just skips drawing.
+    /// Useful for providing a raycast target without actually drawing anything.
+    [ExcludeFromCoverage]
+    public class NonDrawingGraphic : Graphic
+    {
+        public override void SetMaterialDirty() { }
+
+        public override void SetVerticesDirty() { }
+
+        /// Probably not necessary since the chain of calls `Rebuild()`->`UpdateGeometry()`->`DoMeshGeneration()`->`OnPopulateMesh()` won't happen; so here really just as a fail-safe.
+        protected override void OnPopulateMesh(VertexHelper vh)
+        {
+            vh.Clear();
+        }
+    }
+}

Assets/Scripts/UI/NonDrawingGraphic.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: b78fc1af781b54e4392ff1040214c054

Assets/Scripts/UI/SceneLoadingManager.cs

@@ -0,0 +1,88 @@
+using System.Collections;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+namespace BracerLib.UI
+{
+    public class SceneLoadingManager : MonoBehaviour
+    {
+        private static SceneLoadingManager _instance;
+
+        public static void LoadScenes(string[] scenePath, LoadSceneMode sceneMode)
+        {
+            if (!ValidInstance())
+                return;
+
+            _instance.TryLoadScenes(scenePath, sceneMode);
+        }
+
+        public static void Show()
+        {
+            if (ValidInstance())
+                _instance.Toggle(true);
+        }
+
+        public static void Hide()
+        {
+            if (ValidInstance())
+                _instance.Toggle(false);
+        }
+
+        private static bool ValidInstance()
+        {
+            if (_instance != null)
+                return true;
+
+            Debug.LogError("No Load Screen Manager found.");
+
+            return false;
+        }
+
+        [SerializeField]
+        private GameObject _loadingScreenGameObject;
+
+        private Coroutine _sceneLoadingCoroutine;
+
+        private void Awake()
+        {
+            DontDestroyOnLoad(_loadingScreenGameObject);
+            if (_instance != null)
+            {
+                Debug.LogError("Multiple LoadScreenManagers found. Please delete one", this);
+                Destroy(this);
+
+                return;
+            }
+
+            _instance = this;
+        }
+
+        private void TryLoadScenes(string[] scenePaths, LoadSceneMode sceneMode)
+        {
+            if (_sceneLoadingCoroutine != null)
+            {
+                Debug.LogError("SceneLoadingManager is already loading scenes.");
+
+                return;
+            }
+
+            _sceneLoadingCoroutine = StartCoroutine(LoadSceneCoroutine(scenePaths, sceneMode));
+        }
+
+        private IEnumerator LoadSceneCoroutine(string[] scenePaths, LoadSceneMode sceneMode)
+        {
+            Show();
+
+            for (var i = 0; i < scenePaths.Length; i++)
+                yield return SceneManager.LoadSceneAsync(scenePaths[i], sceneMode);
+
+            Hide();
+            _sceneLoadingCoroutine = null;
+        }
+
+        private void Toggle(bool state)
+        {
+            _loadingScreenGameObject.SetActive(state);
+        }
+    }
+}

Assets/Scripts/UI/SceneLoadingManager.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 7e94d21e86e94de46b81f938aa50a29e