.

DoomDeathmatch/DoomDeathmatch.csproj

@@ -10,8 +10,4 @@
       <ProjectReference Include="..\Engine\Engine.csproj" />
     </ItemGroup>
 
-    <ItemGroup>
-      <Folder Include="src\Scene\Play\" />
-    </ItemGroup>
-
 </Project>

DoomDeathmatch/asset/model/map.obj

@@ -0,0 +1,101 @@
+# Blender 4.2.3 LTS
+# www.blender.org
+o Plane
+v -14.316629 -4.684887 0.000000
+v 14.316629 -4.684887 0.000000
+v -14.316629 4.684887 0.000000
+v 14.316629 4.684887 0.000000
+v 6.822107 -4.684887 0.000000
+v 6.822107 4.684887 0.000000
+v 14.316629 33.607601 0.000000
+v 6.822107 33.607601 0.000000
+v 14.316629 25.280016 0.000000
+v 6.822107 25.280016 0.000000
+v -6.847844 33.607601 0.000000
+v -6.847844 25.280016 0.000000
+v -25.254845 24.277735 0.000000
+v -18.173466 20.114567 0.000000
+v -26.336294 7.837210 0.000000
+v -19.225933 10.395360 0.000000
+v -14.316629 -4.684887 3.000000
+v 14.316629 -4.684887 3.000000
+v 14.316629 4.684887 3.000000
+v 6.822107 -4.684887 3.000000
+v 14.316629 33.607601 3.000000
+v 6.822107 33.607601 3.000000
+v 14.316629 25.280016 3.000000
+v -6.847844 33.607601 3.000000
+v -25.254845 24.277735 3.000000
+v -26.336294 7.837210 3.000000
+v -14.316629 4.684887 3.000000
+v 6.822107 4.684887 3.000000
+v 6.822107 25.280016 3.000000
+v -6.847844 25.280016 3.000000
+v -18.173466 20.114567 3.000000
+v -19.225933 10.395360 3.000000
+vn -0.0000 -0.0000 1.0000
+vn -1.0000 -0.0000 -0.0000
+vn 0.7214 0.6925 -0.0000
+vn 0.9978 -0.0656 -0.0000
+vn 0.4521 -0.8920 -0.0000
+vn -0.0000 -1.0000 -0.0000
+vn -0.0000 1.0000 -0.0000
+vn -0.7583 -0.6519 -0.0000
+vn 1.0000 -0.0000 -0.0000
+vn -0.4150 0.9098 -0.0000
+vn -0.9942 0.1077 -0.0000
+vt 1.000000 0.000000
+vt 0.738258 1.000000
+vt 0.738258 0.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vt 1.000000 1.000000
+s 0
+f 2/1/1 6/2/1 5/3/1
+f 5/3/1 3/4/1 1/5/1
+f 9/6/1 8/2/1 10/2/1
+f 4/6/1 10/2/1 6/2/1
+f 8/2/1 12/2/1 10/2/1
+f 11/2/1 14/2/1 12/2/1
+f 14/2/1 15/2/1 16/2/1
+f 3/4/1 15/2/1 1/5/1
+f 2/1/2 19/6/2 4/6/2
+f 15/2/3 17/5/3 1/5/3
+f 13/2/4 26/2/4 15/2/4
+f 4/6/2 23/6/2 9/6/2
+f 11/2/5 25/2/5 13/2/5
+f 7/6/6 22/2/6 8/2/6
+f 8/2/6 24/2/6 11/2/6
+f 1/5/7 20/3/7 5/3/7
+f 5/3/7 18/1/7 2/1/7
+f 9/6/2 21/6/2 7/6/2
+f 12/2/7 29/2/7 10/2/7
+f 3/4/8 32/2/8 16/2/8
+f 10/2/9 28/2/9 6/2/9
+f 14/2/10 30/2/10 12/2/10
+f 6/2/6 27/4/6 3/4/6
+f 16/2/11 31/2/11 14/2/11
+f 2/1/1 4/6/1 6/2/1
+f 5/3/1 6/2/1 3/4/1
+f 9/6/1 7/6/1 8/2/1
+f 4/6/1 9/6/1 10/2/1
+f 8/2/1 11/2/1 12/2/1
+f 11/2/1 13/2/1 14/2/1
+f 14/2/1 13/2/1 15/2/1
+f 3/4/1 16/2/1 15/2/1
+f 2/1/2 18/1/2 19/6/2
+f 15/2/3 26/2/3 17/5/3
+f 13/2/4 25/2/4 26/2/4
+f 4/6/2 19/6/2 23/6/2
+f 11/2/5 24/2/5 25/2/5
+f 7/6/6 21/6/6 22/2/6
+f 8/2/6 22/2/6 24/2/6
+f 1/5/7 17/5/7 20/3/7
+f 5/3/7 20/3/7 18/1/7
+f 9/6/2 23/6/2 21/6/2
+f 12/2/7 30/2/7 29/2/7
+f 3/4/8 27/4/8 32/2/8
+f 10/2/9 29/2/9 28/2/9
+f 14/2/10 31/2/10 30/2/10
+f 6/2/6 28/2/6 27/4/6
+f 16/2/11 32/2/11 31/2/11

DoomDeathmatch/src/Component/HealthComponent.cs

@@ -1,33 +0,0 @@
-namespace DoomDeathmatch.Component;
-
-public class HealthComponent : Engine.Scene.Component.Component
-{
-  public float MaxHealth { get; set; } = 100;
-  public float Health { get; private set; } = 100;
-  public event Action<HealthComponent>? HealthChanged;
-  public event Action<HealthComponent>? Died;
-
-  public void TakeDamage(float parDamage)
-  {
-    Health -= parDamage;
-    if (Health <= 0)
-    {
-      Died?.Invoke(this);
-    }
-    else
-    {
-      HealthChanged?.Invoke(this);
-    }
-  }
-
-  public void Heal(float parHeal)
-  {
-    Health += parHeal;
-    if (Health > MaxHealth)
-    {
-      Health = MaxHealth;
-    }
-
-    HealthChanged?.Invoke(this);
-  }
-}

DoomDeathmatch/src/Component/MVC/Controller/HealthController.cs

@@ -0,0 +1,31 @@
+using DoomDeathmatch.Component.MVC.Model;
+using DoomDeathmatch.Component.MVC.View;
+
+namespace DoomDeathmatch.Component.MVC.Controller;
+
+public class HealthController : Engine.Scene.Component.Component
+{
+  private readonly HealthModel _healthModel = new(100);
+  private HealthView? _healthView;
+
+  public override void Awake()
+  {
+    _healthView = GameObject.GetComponent<HealthView>();
+
+    if (_healthView != null)
+    {
+      _healthView.UpdateView(_healthModel);
+      _healthModel.HealthChanged += _healthView.UpdateView;
+    }
+  }
+
+  public void TakeDamage(float parDamage)
+  {
+    _healthModel.Health -= parDamage;
+  }
+
+  public void Heal(float parHeal)
+  {
+    _healthModel.Health += parHeal;
+  }
+}

DoomDeathmatch/src/Component/MVC/Controller/PlayerController.cs

@@ -0,0 +1,45 @@
+using DoomDeathmatch.Component.MVC.Model;
+using Engine.Input;
+
+namespace DoomDeathmatch.Component.MVC.Controller;
+
+public class PlayerController : Engine.Scene.Component.Component
+{
+  private readonly IInputHandler _inputHandler = Engine.Engine.Instance.InputHandler!;
+
+  private HealthController _healthController = null!;
+  private WeaponController _weaponController = null!;
+  private ScoreController _scoreController = null!;
+
+  public override void Awake()
+  {
+    _healthController = GameObject.GetComponent<HealthController>()!;
+    _weaponController = GameObject.GetComponent<WeaponController>()!;
+    _scoreController = GameObject.GetComponent<ScoreController>()!;
+
+    ArgumentNullException.ThrowIfNull(_healthController);
+    ArgumentNullException.ThrowIfNull(_weaponController);
+    ArgumentNullException.ThrowIfNull(_scoreController);
+  }
+
+  public override void Update(double parDeltaTime)
+  {
+    if (_inputHandler.IsKeyJustPressed(KeyboardButtonCode.C))
+      _weaponController.AddWeapon(WeaponData.Shotgun);
+
+    for (var i = 0; i < 10; i++)
+    {
+      if (KeyboardButtonCode.D1 + i > KeyboardButtonCode.D0)
+        break;
+
+      if (!_inputHandler.IsKeyJustPressed(KeyboardButtonCode.D1 + i))
+        continue;
+
+      _weaponController.SelectWeapon(i);
+      break;
+    }
+
+    if (_inputHandler.IsKeyJustPressed(KeyboardButtonCode.Space))
+      _weaponController.TryShoot();
+  }
+}

DoomDeathmatch/src/Component/MVC/Controller/ScoreController.cs

@@ -0,0 +1,22 @@
+using DoomDeathmatch.Component.MVC.Model;
+using DoomDeathmatch.Component.MVC.View;
+
+namespace DoomDeathmatch.Component.MVC.Controller;
+
+public class ScoreController : Engine.Scene.Component.Component
+{
+  private readonly ScoreModel _scoreModel = new();
+  private ScoreView _scoreView = null!;
+
+  public override void Awake()
+  {
+    _scoreView = GameObject.GetComponent<ScoreView>()!;
+    _scoreView.UpdateView(_scoreModel);
+    _scoreModel.ScoreChanged += _scoreView.UpdateView;
+  }
+
+  public void AddScore(int parScore)
+  {
+    _scoreModel.Score += parScore;
+  }
+}

DoomDeathmatch/src/Component/MVC/Controller/WeaponController.cs

@@ -0,0 +1,74 @@
+using DoomDeathmatch.Component.MVC.Model;
+using DoomDeathmatch.Component.MVC.View;
+
+namespace DoomDeathmatch.Component.MVC.Controller;
+
+public class WeaponController : Engine.Scene.Component.Component
+{
+  public event Action<WeaponData>? OnWeaponShot;
+
+  private readonly WeaponModel _weaponModel = new();
+  private WeaponView _weaponView = null!;
+
+  public override void Awake()
+  {
+    _weaponView = GameObject.GetComponent<WeaponView>()!;
+    _weaponView.UpdateView(_weaponModel.SelectedWeapon);
+
+    _weaponModel.OnWeaponSelected += WeaponSelected;
+    WeaponSelected(null, _weaponModel.SelectedWeapon);
+  }
+
+  public bool TryShoot()
+  {
+    if (_weaponModel.SelectedWeapon.Ammo <= 0)
+      return false;
+
+    _weaponModel.SelectedWeapon.Ammo--;
+
+    OnWeaponShot?.Invoke(_weaponModel.SelectedWeapon);
+
+    return true;
+  }
+
+  public void Reload()
+  {
+    _weaponModel.SelectedWeapon.Ammo = _weaponModel.SelectedWeapon.MaxAmmo;
+  }
+
+  public void AddWeapon(WeaponData parWeaponData)
+  {
+    if (_weaponModel.Weapons.Contains(parWeaponData))
+      return;
+
+    _weaponModel.Weapons.Add(parWeaponData);
+  }
+
+  public void RemoveWeapon(int parIndex)
+  {
+    if (parIndex <= 0 || parIndex >= _weaponModel.Weapons.Count)
+      return;
+
+    var newSelectedIndex = parIndex >= _weaponModel.SelectedWeaponIndex ? _weaponModel.SelectedWeaponIndex : 0;
+
+    _weaponModel.SelectedWeaponIndex = newSelectedIndex;
+    _weaponModel.Weapons.RemoveAt(parIndex);
+  }
+
+  public void SelectWeapon(int parIndex)
+  {
+    if (parIndex >= _weaponModel.Weapons.Count)
+      return;
+
+    _weaponModel.SelectedWeaponIndex = parIndex;
+  }
+
+  private void WeaponSelected(WeaponData? parOldWeapon, WeaponData parNewWeapon)
+  {
+    if (parOldWeapon != null)
+      parOldWeapon.OnAmmoChanged -= _weaponView.UpdateAmmoView;
+
+    parNewWeapon.OnAmmoChanged += _weaponView.UpdateAmmoView;
+    _weaponView.UpdateView(parNewWeapon);
+  }
+}

DoomDeathmatch/src/Component/MVC/Model/HealthModel.cs

@@ -0,0 +1,35 @@
+namespace DoomDeathmatch.Component.MVC.Model;
+
+public class HealthModel
+{
+  public float MaxHealth
+  {
+    get => _maxHealth;
+    set
+    {
+      _maxHealth = Math.Max(value, 1);
+      HealthChanged?.Invoke(this);
+    }
+  }
+
+  public float Health
+  {
+    get => _health;
+    set
+    {
+      _health = Math.Clamp(value, 0, MaxHealth);
+      HealthChanged?.Invoke(this);
+    }
+  }
+
+  public event Action<HealthModel>? HealthChanged;
+
+  private float _health;
+  private float _maxHealth;
+
+  public HealthModel(float parMaxHealth)
+  {
+    MaxHealth = parMaxHealth;
+    Health = parMaxHealth;
+  }
+}

DoomDeathmatch/src/Component/MVC/Model/ScoreModel.cs

@@ -0,0 +1,18 @@
+namespace DoomDeathmatch.Component.MVC.Model;
+
+public class ScoreModel
+{
+  public event Action<ScoreModel>? ScoreChanged;
+
+  public int Score
+  {
+    get => _score;
+    set
+    {
+      _score = Math.Max(value, 0);
+      ScoreChanged?.Invoke(this);
+    }
+  }
+
+  private int _score;
+}

DoomDeathmatch/src/Component/MVC/Model/WeaponData.cs

@@ -0,0 +1,54 @@
+namespace DoomDeathmatch.Component.MVC.Model;
+
+public class WeaponData
+{
+  public static WeaponData Pistol =>
+    new(30) { Id = "pistol", Name = "Пистолет", Texture = "texture/pistol.png", Damage = 10 };
+
+  public static WeaponData Shotgun =>
+    new(10) { Id = "shotgun", Name = "Дробовик", Texture = "texture/shotgun.png", Damage = 50 };
+
+  public string Id { get; private init; } = "";
+  public string Name { get; private init; } = "";
+  public string Texture { get; private init; } = "";
+  public int Damage { get; private init; }
+  public int MaxAmmo { get; }
+
+  public int Ammo
+  {
+    get => _ammo;
+    set
+    {
+      if (value < 0)
+        value = 0;
+      if (value > MaxAmmo)
+        value = MaxAmmo;
+
+      if (_ammo == value)
+        return;
+
+      _ammo = value;
+      OnAmmoChanged?.Invoke(this);
+    }
+  }
+
+  public event Action<WeaponData>? OnAmmoChanged;
+
+  private int _ammo;
+
+  private WeaponData(int parMaxAmmo)
+  {
+    MaxAmmo = parMaxAmmo;
+    Ammo = MaxAmmo;
+  }
+
+  public override bool Equals(object? parObj)
+  {
+    return parObj is WeaponData weaponModel && Id == weaponModel.Id;
+  }
+
+  public override int GetHashCode()
+  {
+    return HashCode.Combine(Id);
+  }
+}

DoomDeathmatch/src/Component/MVC/Model/WeaponModel.cs

@@ -0,0 +1,29 @@
+namespace DoomDeathmatch.Component.MVC.Model;
+
+public class WeaponModel
+{
+  public event Action<WeaponData, WeaponData>? OnWeaponSelected;
+
+  public IList<WeaponData> Weapons => _weapons;
+
+  public WeaponData SelectedWeapon => _weapons[_selectedWeaponIndex];
+
+  public int SelectedWeaponIndex
+  {
+    get => _selectedWeaponIndex;
+    set
+    {
+      value = Math.Clamp(value, 0, _weapons.Count - 1);
+
+      if (_selectedWeaponIndex == value)
+        return;
+
+      var oldSelectedWeapon = SelectedWeapon;
+      _selectedWeaponIndex = value;
+      OnWeaponSelected?.Invoke(oldSelectedWeapon, SelectedWeapon);
+    }
+  }
+
+  private readonly List<WeaponData> _weapons = [WeaponData.Pistol];
+  private int _selectedWeaponIndex = 0;
+}

DoomDeathmatch/src/Component/MVC/View/HealthView.cs

@@ -0,0 +1,23 @@
+using DoomDeathmatch.Component.MVC.Model;
+using Engine.Scene.Component.BuiltIn.Renderer;
+
+namespace DoomDeathmatch.Component.MVC.View;
+
+public class HealthView : Engine.Scene.Component.Component
+{
+  private readonly TextRenderer _healthTextRenderer;
+
+  public HealthView(TextRenderer parHealthTextRenderer)
+  {
+    _healthTextRenderer = parHealthTextRenderer;
+  }
+
+  public void UpdateView(HealthModel parHealthModel)
+  {
+    var percentage = parHealthModel.Health / parHealthModel.MaxHealth * 100;
+    if (parHealthModel.Health != 0)
+      percentage = Math.Max(1, percentage);
+
+    _healthTextRenderer.Text = $"Здоровье: {percentage:000}";
+  }
+}

DoomDeathmatch/src/Component/MVC/View/ScoreView.cs

@@ -0,0 +1,19 @@
+using DoomDeathmatch.Component.MVC.Model;
+using Engine.Scene.Component.BuiltIn.Renderer;
+
+namespace DoomDeathmatch.Component.MVC.View;
+
+public class ScoreView : Engine.Scene.Component.Component
+{
+  private readonly TextRenderer _scoreTextRenderer;
+
+  public ScoreView(TextRenderer parScoreTextRenderer)
+  {
+    _scoreTextRenderer = parScoreTextRenderer;
+  }
+
+  public void UpdateView(ScoreModel parScoreModel)
+  {
+    _scoreTextRenderer.Text = $"Счет: {parScoreModel.Score:00000}";
+  }
+}

DoomDeathmatch/src/Component/MVC/View/WeaponView.cs

@@ -0,0 +1,31 @@
+using DoomDeathmatch.Component.MVC.Model;
+using Engine.Graphics.Texture;
+using Engine.Scene.Component.BuiltIn.Renderer;
+
+namespace DoomDeathmatch.Component.MVC.View;
+
+public class WeaponView : Engine.Scene.Component.Component
+{
+  private readonly TextRenderer _weaponName;
+  private readonly TextRenderer _weaponAmmo;
+  private readonly Box2DRenderer _weaponSprite;
+
+  public WeaponView(TextRenderer parWeaponName, TextRenderer parWeaponAmmo, Box2DRenderer parWeaponSprite)
+  {
+    _weaponName = parWeaponName;
+    _weaponAmmo = parWeaponAmmo;
+    _weaponSprite = parWeaponSprite;
+  }
+
+  public void UpdateView(WeaponData parWeaponData)
+  {
+    UpdateAmmoView(parWeaponData);
+    _weaponName.Text = $"Оружие: {parWeaponData.Name}";
+    _weaponSprite.Texture = Engine.Engine.Instance.AssetResourceManager.Load<Texture>(parWeaponData.Texture);
+  }
+
+  public void UpdateAmmoView(WeaponData parWeaponData)
+  {
+    _weaponAmmo.Text = $"Патроны: {parWeaponData.Ammo}/{parWeaponData.MaxAmmo}";
+  }
+}

DoomDeathmatch/src/Component/UI/SelectorComponent.cs

@@ -67,7 +67,7 @@ public class SelectorComponent : Engine.Scene.Component.Component
     var scale = transformMatrix.ExtractScale();
 
     GameObject.Transform.Translation = translation;
-    GameObject.Transform.Translation.X -= scale.X / 2 + 0.05f;
+    GameObject.Transform.Translation.X -= scale.X / 2;
 
     GameObject.Transform.Size.Y = scale.Y;
   }

DoomDeathmatch/src/Component/UI/TestComponent.cs

@@ -1,20 +0,0 @@
-using Engine.Input;
-using Engine.Scene.Component.BuiltIn;
-
-namespace DoomDeathmatch.Component.UI;
-
-public class TestComponent : Engine.Scene.Component.Component
-{
-  private readonly IInputHandler _inputHandler = Engine.Engine.Instance.InputHandler!;
-  public Camera? Camera { get; set; }
-
-  public override void Update(double parDeltaTime)
-  {
-    if (Camera == null)
-    {
-      return;
-    }
-
-    GameObject.Transform.Size.Xy = 2 * Camera.ScreenToWorld(_inputHandler.MousePosition).Xy;
-  }
-}

DoomDeathmatch/src/Component/UI/TextAlignComponent.cs

@@ -27,9 +27,7 @@ public class TextAlignComponent : Engine.Scene.Component.Component
     _cachedText = _textRenderer.Text;
     var font = _textRenderer.Font;
     var size = font.Measure(_textRenderer.Text);
-    var scale = GameObject.Transform.FullTransformMatrix.ExtractScale();
-    var offset = GetOffset(size) + new Vector2(0, font.Metadata.Metrics.LineHeight - font.Metadata.Metrics.Ascender) / 2;
-    offset *= scale.Xy;
+    var offset = GetOffset(size) + new Vector2(0, _textRenderer.Font.Metadata.Metrics.Descender / 4);
 
     GameObject.Transform.Translation.Xy = offset;
   }

DoomDeathmatch/src/Component/UI/UiComponent.cs

@@ -8,7 +8,7 @@ public class UiComponent : Engine.Scene.Component.Component
   public UiContainerComponent? Container { get; set; }
   public Anchor Anchor { get; set; } = Anchor.Center;
   public Vector2 Offset { get; set; } = Vector2.Zero;
-  public Vector2 Center { get; set; } = Vector2.Zero;
+  public Anchor Center { get; set; } = Anchor.Center;
 
   public event Action<UiComponent>? OnClick;
   public event Action<UiComponent>? OnMouseOver;
@@ -22,17 +22,17 @@ public class UiComponent : Engine.Scene.Component.Component
       return;
     }
 
-    GameObject.Transform.Translation.Xy = GetAnchorPosition(Container.GameObject.Transform.Size.Xy) + Offset;
+    var size = GameObject.Transform.Size * GameObject.Transform.Scale;
+    GameObject.Transform.Translation.Xy = GetAnchorPosition(Container.GameObject.Transform.Size.Xy, Anchor) + Offset -
+                                          GetAnchorPosition(size.Xy, Center);
+
     var transformMatrix = GameObject.Transform.FullTransformMatrix;
+    var actualSize = transformMatrix.ExtractScale();
     var translation = transformMatrix.ExtractTranslation();
-    var scale = transformMatrix.ExtractScale();
 
-    var relativeMousePosition = Container.MousePosition.Xy -
-                                (translation.Xy);
+    var relativeMousePosition = Container.MousePosition.Xy - translation.Xy;
 
-    var objectSize = scale.Xy;
-
-    if (Math.Abs(relativeMousePosition.X) <= objectSize.X / 2 && Math.Abs(relativeMousePosition.Y) <= objectSize.Y / 2)
+    if (Math.Abs(relativeMousePosition.X) <= actualSize.X / 2 && Math.Abs(relativeMousePosition.Y) <= actualSize.Y / 2)
     {
       OnMouseOver?.Invoke(this);
 
@@ -48,14 +48,14 @@ public class UiComponent : Engine.Scene.Component.Component
     OnClick?.Invoke(this);
   }
 
-  private Vector2 GetAnchorPosition(Vector2 parSize)
+  private static Vector2 GetAnchorPosition(Vector2 parSize, Anchor parAnchor)
   {
-    return parSize * GetAnchorRatio();
+    return parSize * GetAnchorRatio(parAnchor);
   }
 
-  private Vector2 GetAnchorRatio()
+  private static Vector2 GetAnchorRatio(Anchor parAnchor)
   {
-    return Anchor switch
+    return parAnchor switch
     {
       Anchor.TopLeft => new Vector2(-0.5f, 0.5f),
       Anchor.TopCenter => new Vector2(0, 0.5f),
@@ -66,7 +66,7 @@ public class UiComponent : Engine.Scene.Component.Component
       Anchor.BottomLeft => new Vector2(-0.5f, -0.5f),
       Anchor.BottomCenter => new Vector2(0, -0.5f),
       Anchor.BottomRight => new Vector2(0.5f, -0.5f),
-      _ => throw new ArgumentOutOfRangeException(nameof(Anchor), Anchor, null)
+      _ => throw new ArgumentOutOfRangeException(nameof(parAnchor), parAnchor, null)
     };
   }
 }

DoomDeathmatch/src/Component/Util/BillboardComponent.cs

@@ -1,7 +1,7 @@
 using Engine.Scene.Component.BuiltIn;
 using OpenTK.Mathematics;
 
-namespace DoomDeathmatch.Component;
+namespace DoomDeathmatch.Component.Util;
 
 public class BillboardComponent : Engine.Scene.Component.Component
 {

DoomDeathmatch/src/Component/Util/ControllerComponent.cs

@@ -1,7 +1,7 @@
 using Engine.Input;
 using OpenTK.Mathematics;
 
-namespace DoomDeathmatch.Component;
+namespace DoomDeathmatch.Component.Util;
 
 public class ControllerComponent : Engine.Scene.Component.Component
 {

DoomDeathmatch/src/Component/Util/CopySizeComponent.cs

@@ -0,0 +1,25 @@
+using Engine.Scene.Component.BuiltIn;
+using OpenTK.Mathematics;
+
+namespace DoomDeathmatch.Component.Util;
+
+public class CopySizeComponent : Engine.Scene.Component.Component
+{
+  public Vector3 Coefficient { get; set; } = Vector3.One;
+  public Transform? Target { get; set; }
+
+  public override void Update(double parDeltaTime)
+  {
+    if (Target == null)
+      return;
+
+    if (Coefficient.X != 0)
+      GameObject.Transform.Size.X = Target.Size.X * Coefficient.X;
+
+    if (Coefficient.Y != 0)
+      GameObject.Transform.Size.Y = Target.Size.Y * Coefficient.Y;
+
+    if (Coefficient.Z != 0)
+      GameObject.Transform.Size.Z = Target.Size.Z * Coefficient.Z;
+  }
+}

DoomDeathmatch/src/Component/Util/DragComponent.cs

@@ -1,6 +1,6 @@
 using OpenTK.Mathematics;
 
-namespace DoomDeathmatch.Component;
+namespace DoomDeathmatch.Component.Util;
 
 public class DragComponent : Engine.Scene.Component.Component
 {

DoomDeathmatch/src/Component/Util/GravityComponent.cs

@@ -1,6 +1,6 @@
 using OpenTK.Mathematics;
 
-namespace DoomDeathmatch.Component;
+namespace DoomDeathmatch.Component.Util;
 
 public class GravityComponent : Engine.Scene.Component.Component
 {

DoomDeathmatch/src/Component/Util/RigidbodyComponent.cs

@@ -1,6 +1,6 @@
 using OpenTK.Mathematics;
 
-namespace DoomDeathmatch.Component;
+namespace DoomDeathmatch.Component.Util;
 
 public class RigidbodyComponent : Engine.Scene.Component.Component
 {

DoomDeathmatch/src/Component/Util/RotateComponent.cs

@@ -1,7 +1,7 @@
 using Engine.Input;
 using OpenTK.Mathematics;
 
-namespace DoomDeathmatch.Component;
+namespace DoomDeathmatch.Component.Util;
 
 public class RotateComponent : Engine.Scene.Component.Component
 {

DoomDeathmatch/src/DoomDeathmatch.cs

@@ -21,70 +21,6 @@ public static class DoomDeathmatch
 {
   public static void Initialize(Engine.Engine parEngine)
   {
-    parEngine.SceneManager.TransitionTo(MainScene.Create(parEngine));
+    parEngine.SceneManager.TransitionTo(() => MainScene.Create(parEngine));
   }
-
-  // private static Scene MainScene(Engine.Engine parEngine)
-  // {
-  //   var playerObject = new GameObject();
-  //   playerObject.AddComponent<RigidbodyComponent>();
-  //   playerObject.AddComponent(new ControllerComponent { Speed = 5f });
-  //   playerObject.AddComponent(new DragComponent { Drag = 5f, Coefficient = new Vector3(1, 1, 0) });
-  //   playerObject.AddComponent(new TestComponent());
-  //
-  //   var cameraObject = new GameObject();
-  //   cameraObject.Transform.Translation.Z = 2;
-  //   cameraObject.AddComponent<PerspectiveCamera>();
-  //
-  //   var testObject = new GameObject { Transform = { Translation = new Vector3(0, 6, 0), Rotation = Quaternion.FromAxisAngle(Vector3.UnitX, (float)Math.PI / 2) } };
-  //   testObject.AddComponent(new Box2DRenderer { Color = new Vector4(1, 0, 0, 1) });
-  //
-  //   var mesh = parEngine.AssetResourceManager.Load<Mesh>("model/untitled.obj");
-  //   var texture = parEngine.AssetResourceManager.Load<Texture>("TestImage.png");
-  //   var font = parEngine.AssetResourceManager.Load<Font>("font/test");
-  //
-  //   var box2dRenderer = new GameObject
-  //   {
-  //     Transform = { Scale = new Vector3(1), Rotation = Quaternion.FromAxisAngle(Vector3.UnitX, (float)Math.PI / 2) }
-  //   };
-  //   // box2dRenderer.AddComponent(new MeshRenderer { Mesh = mesh, Albedo = texture });
-  //   box2dRenderer.AddComponent(new TextRenderer { Font = font, Text = "A", RenderLayer = RenderLayer.HUD });
-  //   // box2dRenderer.AddComponent(new BillboardComponent { Target = cameraObject.Transform });
-  //
-  //   var xAxis = new GameObject();
-  //   xAxis.Transform.Translation.X = 5;
-  //   xAxis.Transform.Scale.X = 10;
-  //   xAxis.AddComponent(new Box2DRenderer { Color = new Vector4(1, 0, 0, 1) });
-  //
-  //   var yAxis = new GameObject();
-  //   yAxis.Transform.Translation.Y = 5;
-  //   yAxis.Transform.Scale.X = 10;
-  //   yAxis.Transform.Rotation *= Quaternion.FromAxisAngle(Vector3.UnitZ, (float)Math.PI / 2);
-  //   yAxis.AddComponent(new Box2DRenderer { Color = new Vector4(0, 1, 0, 1) });
-  //
-  //   var zAxis = new GameObject();
-  //   zAxis.Transform.Translation.Z = 5;
-  //   zAxis.Transform.Scale.Y = 10;
-  //   zAxis.Transform.Scale.X = 10;
-  //   zAxis.Transform.Rotation *= Quaternion.FromAxisAngle(Vector3.UnitX, (float)Math.PI / 2);
-  //   zAxis.AddComponent(new Box2DRenderer
-  //   {
-  //     Color = new Vector4(0, 0, 1, 1), Texture = parEngine.AssetResourceManager.Load<Texture>("test.jpeg")
-  //   });
-  //
-  //   var scene = new Scene();
-  //   scene.Add(cameraObject);
-  //   scene.AddChild(cameraObject, testObject);
-  //   scene.Add(playerObject);
-  //   scene.SetChild(playerObject, cameraObject);
-  //
-  //   scene.Add(box2dRenderer);
-  //   // scene.AddChild(box2dRenderer, testChild);
-  //
-  //   scene.Add(xAxis);
-  //   // scene.Add(yAxis);
-  //   // scene.Add(zAxis);
-  //
-  //   return scene;
-  // }
 }

DoomDeathmatch/src/GameObjectUtil.cs

@@ -0,0 +1,35 @@
+using Engine.Scene;
+using Engine.Scene.Component.BuiltIn;
+
+namespace DoomDeathmatch;
+
+public static class GameObjectUtil
+{
+  public static GameObject CreateGameObject(Engine.Scene.Scene parScene,
+    List<Engine.Scene.Component.Component> parComponents)
+  {
+    var gameObject = new GameObject();
+    foreach (var component in parComponents)
+    {
+      gameObject.AddComponent(component);
+    }
+
+    parScene.Add(gameObject);
+
+    return gameObject;
+  }
+
+  public static GameObject CreateGameObject(Engine.Scene.Scene parScene, Transform parTransform,
+    List<Engine.Scene.Component.Component> parComponents)
+  {
+    var gameObject = new GameObject(parTransform);
+    foreach (var component in parComponents)
+    {
+      gameObject.AddComponent(component);
+    }
+
+    parScene.Add(gameObject);
+
+    return gameObject;
+  }
+}

DoomDeathmatch/src/Scene/Leaders/LeadersScene.cs

@@ -16,36 +16,25 @@ public static class LeadersScene
 
     var (cameraObject, camera) = UiUtil.CreateOrthographicCamera(scene);
 
-    var (uiContainerObject, uiContainer) = UiUtil.CreateBackgroundUi(scene, camera);
+    var (uiContainerObject, uiContainer) = UiUtil.CreateBackgroundUi(scene, new UiContainerComponent { Camera = camera });
 
     var (logoObject, logoUi) = UiUtil.CreateLogoUi(parEngine, scene, uiContainer);
+    logoUi.Offset = new Vector2(0, 3f);
 
-    var (backUiObject, backUi) = UiUtil.CreateTextUi(scene, uiContainer,
+    var (backUiObject, backUi, _) = UiUtil.CreateTextUi(scene, uiContainer,
       UiUtil.GetDoomFont(parEngine), "Назад");
-    backUi.OnClick += _ => parEngine.SceneManager.TransitionTo(MainScene.Create(parEngine));
+    backUi.OnClick += _ => parEngine.SceneManager.TransitionTo(() => MainScene.Create(parEngine));
 
-    var (stackObject, stack) = UiUtil.CreateStackUi(scene, uiContainer,
-      [backUi]);
-    stack.Offset = new Vector2(0, -1f);
-    stackObject.Transform.Size = new Vector3(1f, 6f, 1f);
+    var (stackObject, stack) = UiUtil.CreateStackUi(scene,
+      new StackComponent { Offset = new Vector2(0, -1f), Container = uiContainer, Children = { backUi } });
+    stackObject.Transform.Size.Xy = new Vector2(1f, 6f);
 
-    var selectorObject = new GameObject
-    {
-      Transform = { Translation = new Vector3(0, 0, -1), Size = new Vector3(0.5f, 1f, 1f) }
-    };
-    selectorObject.AddComponent(new SelectorComponent
-    {
-      Children = { backUi },
-      SelectKey = KeyboardButtonCode.Space,
-      NextKey = KeyboardButtonCode.Down,
-      PrevKey = KeyboardButtonCode.Up,
-    });
-    selectorObject.AddComponent(new Box2DRenderer { Color = new Vector4(1, 0, 0, 1) });
+    var (selectorObject, selector) = UiUtil.CreateSelectorUi(scene, new SelectorComponent { Children = { backUi } });
 
     scene.AddChild(uiContainerObject, selectorObject);
-    scene.SetChild(uiContainerObject, logoObject);
-    scene.SetChild(uiContainerObject, stackObject);
-    scene.SetChild(stackObject, backUiObject);
+    scene.AddChild(uiContainerObject, logoObject);
+    scene.AddChild(uiContainerObject, stackObject);
+    scene.AddChild(stackObject, backUiObject);
 
     return scene;
   }

DoomDeathmatch/src/Scene/Main/MainScene.cs

@@ -1,11 +1,8 @@
 using DoomDeathmatch.Component.UI;
 using DoomDeathmatch.Scene.Leaders;
+using DoomDeathmatch.Scene.Play;
 using DoomDeathmatch.Scene.Rules;
-using Engine.Asset.Font;
-using Engine.Input;
-using Engine.Scene;
 using Engine.Scene.Component.BuiltIn;
-using Engine.Scene.Component.BuiltIn.Renderer;
 using OpenTK.Mathematics;
 
 namespace DoomDeathmatch.Scene.Main;
@@ -18,60 +15,49 @@ public static class MainScene
 
     var (cameraObject, camera) = UiUtil.CreateOrthographicCamera(scene);
 
-    AddMainUi(parEngine, scene, camera);
+    var (uiContainerObject, uiContainer) =
+      UiUtil.CreateBackgroundUi(scene, new UiContainerComponent { Camera = camera });
+
+    var (playUiObject, playUi, _) =
+      UiUtil.CreateTextUi(scene, uiContainer, UiUtil.GetDoomFont(parEngine), "Играть");
+
+    var (leadersUiObject, leadersUi, _) =
+      UiUtil.CreateTextUi(scene, uiContainer, UiUtil.GetDoomFont(parEngine), "Лидеры");
+
+    var (rulesUiObject, rulesUi, _) =
+      UiUtil.CreateTextUi(scene, uiContainer, UiUtil.GetDoomFont(parEngine), "Правила");
+
+    var (exitUiObject, exitUi, _) =
+      UiUtil.CreateTextUi(scene, uiContainer, UiUtil.GetDoomFont(parEngine), "Выход");
+
+    var (stackObject, stack) = UiUtil.CreateStackUi(scene,
+      new StackComponent
+      {
+        Offset = new Vector2(0, -1f), Container = uiContainer, Children = { playUi, leadersUi, rulesUi, exitUi }
+      });
+    stackObject.Transform.Size.Xy = new Vector2(1f, 6f);
+
+    playUi.OnClick += _ => parEngine.SceneManager.TransitionTo(() => PlayScene.Create(parEngine));
+    leadersUi.OnClick += _ => parEngine.SceneManager.TransitionTo(() => LeadersScene.Create(parEngine));
+    rulesUi.OnClick += _ => parEngine.SceneManager.TransitionTo(() => RulesScene.Create(parEngine));
+    exitUi.OnClick += _ => parEngine.Close();
+
+    var (logoObject, logoUi) = UiUtil.CreateLogoUi(parEngine, scene, uiContainer);
+    logoUi.Offset = new Vector2(0, 3f);
+
+    var (selectorObject, selector) = UiUtil.CreateSelectorUi(scene,
+      new SelectorComponent { Children = { playUi, leadersUi, rulesUi, exitUi } });
+
+    scene.AddChild(uiContainerObject, selectorObject);
+
+    scene.AddChild(uiContainerObject, stackObject);
+    scene.AddChild(uiContainerObject, logoObject);
+
+    scene.AddChild(stackObject, playUiObject);
+    scene.AddChild(stackObject, leadersUiObject);
+    scene.AddChild(stackObject, rulesUiObject);
+    scene.AddChild(stackObject, exitUiObject);
 
     return scene;
   }
-
-  private static void AddMainUi(Engine.Engine parEngine, Engine.Scene.Scene parScene, Camera parCamera)
-  {
-    var (uiContainerObject, uiContainer) = UiUtil.CreateBackgroundUi(parScene, parCamera);
-
-    var (playUiObject, playUi) =
-      UiUtil.CreateTextUi(parScene, uiContainer, UiUtil.GetDoomFont(parEngine), "Играть");
-
-    var (leadersUiObject, leadersUi) =
-      UiUtil.CreateTextUi(parScene, uiContainer, UiUtil.GetDoomFont(parEngine), "Лидеры");
-
-    var (rulesUiObject, rulesUi) =
-      UiUtil.CreateTextUi(parScene, uiContainer, UiUtil.GetDoomFont(parEngine), "Правила");
-
-    var (exitUiObject, exitUi) =
-      UiUtil.CreateTextUi(parScene, uiContainer, UiUtil.GetDoomFont(parEngine), "Выход");
-
-    var (stackObject, stack) = UiUtil.CreateStackUi(parScene, uiContainer,
-      [playUi, leadersUi, rulesUi, exitUi]);
-    stack.Offset = new Vector2(0, -1f);
-    stackObject.Transform.Size = new Vector3(2f, 5f, 1f);
-
-    playUi.OnClick += _ => Console.WriteLine("Play");
-    leadersUi.OnClick += _ => parEngine.SceneManager.TransitionTo(LeadersScene.Create(parEngine));
-    rulesUi.OnClick += _ => parEngine.SceneManager.TransitionTo(RulesScene.Create(parEngine));
-    exitUi.OnClick += _ => parEngine.Close();
-
-    var (logoObject, logoUi) = UiUtil.CreateLogoUi(parEngine, parScene, uiContainer);
-
-    var selectorObject = new GameObject
-    {
-      Transform = { Translation = new Vector3(0, 0, -1), Size = new Vector3(0.5f, 1f, 1f) }
-    };
-    selectorObject.AddComponent(new SelectorComponent
-    {
-      Children = { playUi, leadersUi, rulesUi, exitUi },
-      SelectKey = KeyboardButtonCode.Space,
-      NextKey = KeyboardButtonCode.Down,
-      PrevKey = KeyboardButtonCode.Up,
-    });
-    selectorObject.AddComponent(new Box2DRenderer { Color = new Vector4(1, 0, 0, 1) });
-
-    parScene.AddChild(uiContainerObject, selectorObject);
-
-    parScene.SetChild(uiContainerObject, stackObject);
-    parScene.SetChild(uiContainerObject, logoObject);
-
-    parScene.SetChild(stackObject, playUiObject);
-    parScene.SetChild(stackObject, leadersUiObject);
-    parScene.SetChild(stackObject, rulesUiObject);
-    parScene.SetChild(stackObject, exitUiObject);
-  }
 }

DoomDeathmatch/src/Scene/Play/PlayScene.cs

@@ -0,0 +1,136 @@
+using DoomDeathmatch.Component;
+using DoomDeathmatch.Component.MVC.Controller;
+using DoomDeathmatch.Component.MVC.View;
+using DoomDeathmatch.Component.UI;
+using DoomDeathmatch.Component.Util;
+using Engine.Asset.Mesh;
+using Engine.Graphics.Pipeline;
+using Engine.Graphics.Texture;
+using Engine.Scene;
+using Engine.Scene.Component.BuiltIn;
+using Engine.Scene.Component.BuiltIn.Renderer;
+using OpenTK.Mathematics;
+
+namespace DoomDeathmatch.Scene.Play;
+
+public static class PlayScene
+{
+  public static Engine.Scene.Scene Create(Engine.Engine parEngine)
+  {
+    var scene = new Engine.Scene.Scene();
+
+    var (hudCameraObject, hudCamera) = UiUtil.CreateOrthographicCamera(scene, RenderLayer.HUD);
+    var (uiContainerObject, uiContainer) =
+      UiUtil.CreateContainerUi(scene, new UiContainerComponent { Camera = hudCamera });
+
+    var (bottomContainerObject, bottomContainer) =
+      UiUtil.CreateContainerUi(scene, new UiContainerComponent { Container = uiContainer });
+    bottomContainer.Anchor = Anchor.BottomCenter;
+    bottomContainer.Center = Anchor.BottomCenter;
+    bottomContainerObject.AddComponent(new Box2DRenderer
+    {
+      Color = new Vector4(1, 0, 0, 1), RenderLayer = RenderLayer.HUD
+    });
+    bottomContainerObject.AddComponent(new CopySizeComponent
+    {
+      Target = uiContainerObject.Transform, Coefficient = new Vector3(1, 0, 1)
+    });
+    bottomContainerObject.Transform.Size.Y = 1.5f;
+    scene.AddChild(uiContainerObject, bottomContainerObject);
+
+    var (gunObject, (gunUi, gunSprite)) = UiUtil.CreateSpriteUi(scene, bottomContainer,
+      parEngine.AssetResourceManager.Load<Texture>("texture/pistol.png"), RenderLayer.HUD);
+    gunObject.Transform.Scale = new Vector3(5);
+    gunUi.Anchor = Anchor.TopCenter;
+    gunUi.Center = Anchor.BottomCenter;
+    scene.AddChild(bottomContainerObject, gunObject);
+
+    var (healthObject, healthUi, (_, healthTextRenderer)) =
+      UiUtil.CreateTextUi(scene, bottomContainer, UiUtil.GetDoomFont(parEngine), "Здоровье: 000",
+        TextAlignComponent.Align.Center,
+        RenderLayer.HUD);
+    healthObject.Transform.Scale = new Vector3(0.75f);
+    healthUi.Anchor = Anchor.CenterLeft;
+    healthUi.Center = Anchor.CenterLeft;
+    scene.AddChild(bottomContainerObject, healthObject);
+
+    var (ammoObject, ammoUi, (_, ammoTextRenderer)) =
+      UiUtil.CreateTextUi(scene, bottomContainer, UiUtil.GetDoomFont(parEngine), "Патроны: 00/00",
+        TextAlignComponent.Align.Center,
+        RenderLayer.HUD);
+    ammoObject.Transform.Scale = new Vector3(0.75f);
+    ammoUi.Anchor = Anchor.TopRight;
+    ammoUi.Center = Anchor.TopRight;
+    scene.AddChild(bottomContainerObject, ammoObject);
+
+    var (weaponObject, weaponUi, (_, weaponTextRenderer)) =
+      UiUtil.CreateTextUi(scene, bottomContainer, UiUtil.GetDoomFont(parEngine), "Оружие: ОРУЖИЕОР",
+        TextAlignComponent.Align.Center,
+        RenderLayer.HUD);
+    weaponObject.Transform.Scale = new Vector3(0.75f);
+    weaponUi.Anchor = Anchor.BottomRight;
+    weaponUi.Center = Anchor.BottomRight;
+    scene.AddChild(bottomContainerObject, weaponObject);
+
+    var (topContainerObject, topContainer) =
+      UiUtil.CreateContainerUi(scene, new UiContainerComponent { Container = uiContainer });
+    topContainer.Anchor = Anchor.TopCenter;
+    topContainer.Center = Anchor.TopCenter;
+    topContainerObject.AddComponent(
+      new Box2DRenderer { Color = new Vector4(1, 0, 0, 1), RenderLayer = RenderLayer.HUD });
+    topContainerObject.AddComponent(new CopySizeComponent
+    {
+      Target = uiContainerObject.Transform, Coefficient = new Vector3(1, 0, 1)
+    });
+    topContainerObject.Transform.Size.Y = 1f;
+    scene.AddChild(uiContainerObject, topContainerObject);
+
+    var (timerObject, timerUi, _) =
+      UiUtil.CreateTextUi(scene, topContainer, UiUtil.GetDoomFont(parEngine), "Время: 00:00",
+        parRenderLayer: RenderLayer.HUD);
+    timerUi.Anchor = Anchor.CenterLeft;
+    timerUi.Center = Anchor.CenterLeft;
+    scene.AddChild(topContainerObject, timerObject);
+
+    var (scoreObject, scoreUi, (_, scoreTextRenderer)) =
+      UiUtil.CreateTextUi(scene, topContainer, UiUtil.GetDoomFont(parEngine), "Счет: 00000",
+        parRenderLayer: RenderLayer.HUD);
+    scoreUi.Anchor = Anchor.CenterRight;
+    scoreUi.Center = Anchor.CenterRight;
+    scene.AddChild(topContainerObject, scoreObject);
+
+    var playerObject = GameObjectUtil.CreateGameObject(scene, [
+      new RigidbodyComponent(),
+      new ControllerComponent { Speed = 5f },
+      new DragComponent { Drag = 5f, Coefficient = new Vector3(1, 1, 0) },
+
+      new PlayerController(),
+
+      new WeaponController(),
+      new WeaponView(weaponTextRenderer, ammoTextRenderer, gunSprite),
+
+      new HealthController(),
+      new HealthView(healthTextRenderer),
+
+      new ScoreController(),
+      new ScoreView(scoreTextRenderer),
+    ]);
+
+    var (perspectiveCameraObject, perspectiveCamera) = UiUtil.CreatePerspectiveCamera(scene);
+    perspectiveCameraObject.Transform.Translation.Z = 2;
+
+    var mapObject = GameObjectUtil.CreateGameObject(scene, [
+      new MeshRenderer { Mesh = parEngine.AssetResourceManager.Load<Mesh>("model/map.obj") },
+    ]);
+
+    var impObject = GameObjectUtil.CreateGameObject(scene,
+      new Transform { Translation = new Vector3(0, 0, 1), Scale = new Vector3(1, 2, 1), }, [
+        new Box2DRenderer { Texture = parEngine.AssetResourceManager.Load<Texture>("texture/imp.png") },
+        new BillboardComponent { Target = perspectiveCameraObject.Transform }
+      ]);
+
+    scene.AddChild(playerObject, perspectiveCameraObject);
+
+    return scene;
+  }
+}

DoomDeathmatch/src/Scene/Rules/RulesScene.cs

@@ -1,9 +1,5 @@
 using DoomDeathmatch.Component.UI;
 using DoomDeathmatch.Scene.Main;
-using Engine.Asset.Font;
-using Engine.Input;
-using Engine.Scene;
-using Engine.Scene.Component.BuiltIn.Renderer;
 using OpenTK.Mathematics;
 
 namespace DoomDeathmatch.Scene.Rules;
@@ -16,42 +12,31 @@ public static class RulesScene
 
     var (cameraObject, camera) = UiUtil.CreateOrthographicCamera(scene);
 
-    var (uiContainerObject, uiContainer) = UiUtil.CreateBackgroundUi(scene, camera);
+    var (uiContainerObject, uiContainer) = UiUtil.CreateBackgroundUi(scene, new UiContainerComponent { Camera = camera });
 
     var (logoObject, logoUi) = UiUtil.CreateLogoUi(parEngine, scene, uiContainer);
+    logoUi.Offset = new Vector2(0, 3f);
 
-    var (backUiObject, backUi) = UiUtil.CreateTextUi(scene, uiContainer,
-      parEngine.AssetResourceManager.Load<Font>("font/test"), "Назад");
-    backUi.OnClick += _ => parEngine.SceneManager.TransitionTo(MainScene.Create(parEngine));
+    var (backUiObject, backUi, _) = UiUtil.CreateTextUi(scene, uiContainer,
+      UiUtil.GetDoomFont(parEngine), "Назад");
+    backUi.OnClick += _ => parEngine.SceneManager.TransitionTo(() => MainScene.Create(parEngine));
 
-    var (rulesObject, rulesUi) = UiUtil.CreateTextUi(scene, uiContainer,
-      parEngine.AssetResourceManager.Load<Font>("font/test"), "Правила");
+    var (rulesObject, rulesUi, _) = UiUtil.CreateTextUi(scene, uiContainer,
+      UiUtil.GetDoomFont(parEngine), "Правила");
 
-    var (stackObject, stack) = UiUtil.CreateStackUi(scene, uiContainer,
-      [rulesUi, backUi]);
-    stack.Offset = new Vector2(0, -1f);
-    stackObject.Transform.Size = new Vector3(1f, 6f, 1f);
+    var (stackObject, stack) = UiUtil.CreateStackUi(scene,
+      new StackComponent { Offset = new Vector2(0, -1f), Container = uiContainer, Children = { rulesUi, backUi } });
+    stackObject.Transform.Size.Xy = new Vector2(1f, 6f);
 
-    var selectorObject = new GameObject
-    {
-      Transform = { Translation = new Vector3(0, 0, -1), Size = new Vector3(0.5f, 1f, 1f) }
-    };
-    selectorObject.AddComponent(new SelectorComponent
-    {
-      Children = { backUi },
-      SelectKey = KeyboardButtonCode.Space,
-      NextKey = KeyboardButtonCode.Down,
-      PrevKey = KeyboardButtonCode.Up,
-    });
-    selectorObject.AddComponent(new Box2DRenderer { Color = new Vector4(1, 0, 0, 1) });
+    var (selectorObject, selector) = UiUtil.CreateSelectorUi(scene, new SelectorComponent { Children = { backUi } });
 
     scene.AddChild(uiContainerObject, selectorObject);
 
-    scene.SetChild(uiContainerObject, logoObject);
-    scene.SetChild(uiContainerObject, stackObject);
+    scene.AddChild(uiContainerObject, logoObject);
+    scene.AddChild(uiContainerObject, stackObject);
 
-    scene.SetChild(stackObject, rulesObject);
-    scene.SetChild(stackObject, backUiObject);
+    scene.AddChild(stackObject, rulesObject);
+    scene.AddChild(stackObject, backUiObject);
 
     return scene;
   }

DoomDeathmatch/src/UiUtil.cs

@@ -1,6 +1,8 @@
 using DoomDeathmatch.Component.UI;
 using Engine.Asset.Font;
+using Engine.Graphics.Pipeline;
 using Engine.Graphics.Texture;
+using Engine.Input;
 using Engine.Scene;
 using Engine.Scene.Component.BuiltIn;
 using Engine.Scene.Component.BuiltIn.Renderer;
@@ -15,102 +17,154 @@ public static class UiUtil
     return parEngine.AssetResourceManager.Load<Font>("font/doom");
   }
 
-  public static (GameObject, OrthographicCamera) CreateOrthographicCamera(Engine.Scene.Scene parScene)
+  public static (GameObject, OrthographicCamera) CreateOrthographicCamera(Engine.Scene.Scene parScene,
+    RenderLayer? parRenderLayer = null)
   {
-    var cameraObject = new GameObject();
-    var camera = new OrthographicCamera();
-    cameraObject.AddComponent(camera);
-
-    parScene.Add(cameraObject);
+    OrthographicCamera camera;
+    var cameraObject = GameObjectUtil.CreateGameObject(parScene, [
+      camera = new OrthographicCamera { RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT }
+    ]);
 
     return (cameraObject, camera);
   }
 
-  public static (GameObject, UiComponent) CreateTextUi(Engine.Scene.Scene parScene, UiContainerComponent parContainer,
-    Font parFont, string parText)
+  public static (GameObject, PerspectiveCamera) CreatePerspectiveCamera(Engine.Scene.Scene parScene,
+    RenderLayer? parRenderLayer = null)
+  {
+    PerspectiveCamera camera;
+    var cameraObject = GameObjectUtil.CreateGameObject(parScene, [
+      camera = new PerspectiveCamera { RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT }
+    ]);
+
+    return (cameraObject, camera);
+  }
+
+  public static (GameObject, UiContainerComponent, (GameObject, TextRenderer)) CreateTextUi(Engine.Scene.Scene parScene,
+    UiContainerComponent parContainer,
+    Font parFont, string parText, TextAlignComponent.Align parAlign = TextAlignComponent.Align.Center,
+    RenderLayer? parRenderLayer = null)
   {
     var size = parFont.Measure(parText);
     var outerObject = new GameObject
     {
       Transform = { Size = new Vector3(size.X, size.Y, 1f), Translation = new Vector3(0, 0, -1) }
     };
-    var uiComponent = new UiComponent { Container = parContainer, Anchor = Anchor.Center };
+    var uiComponent = new UiContainerComponent { Container = parContainer };
     outerObject.AddComponent(uiComponent);
-    outerObject.AddComponent(new Box2DRenderer { Color = new Vector4(0, 0, 1, 1) });
+    outerObject.AddComponent(new Box2DRenderer
+    {
+      Color = new Vector4(0, 0, 1, 1), RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT
+    });
 
     var innerObject = new GameObject { Transform = { Translation = new Vector3(0, 0, -1) } };
-    innerObject.AddComponent(new TextRenderer { Font = parFont, Text = parText });
-    innerObject.AddComponent(new TextAlignComponent { Alignment = TextAlignComponent.Align.Center });
+    // var innerUiComponent = new UiComponent { Container = uiComponent };
+    // innerObject.AddComponent(innerUiComponent);
+    var innerTextRenderer = new TextRenderer
+    {
+      Font = parFont, Text = parText, RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT
+    };
+    innerObject.AddComponent(innerTextRenderer);
+    innerObject.AddComponent(new TextAlignComponent { Alignment = parAlign });
 
     parScene.Add(outerObject);
     parScene.AddChild(outerObject, innerObject);
 
-    return (outerObject, uiComponent);
+    return (outerObject, uiComponent, (innerObject, innerTextRenderer));
   }
 
-  public static (GameObject, UiContainerComponent) CreateBackgroundUi(Engine.Scene.Scene parScene, Camera parCamera)
+  public static (GameObject, UiContainerComponent) CreateContainerUi(Engine.Scene.Scene parScene,
+    UiContainerComponent parUiContainerComponent)
   {
     var uiContainerObject = new GameObject();
-    var uiContainer = new UiContainerComponent { Camera = parCamera };
-    uiContainerObject.AddComponent(uiContainer);
-    uiContainerObject.AddComponent(new Box2DRenderer { Color = new Vector4(0.1f, 0.1f, 0.1f, 1) });
+    uiContainerObject.AddComponent(parUiContainerComponent);
 
     parScene.Add(uiContainerObject);
 
+    return (uiContainerObject, parUiContainerComponent);
+  }
+
+  public static (GameObject, UiContainerComponent) CreateBackgroundUi(Engine.Scene.Scene parScene,
+    UiContainerComponent parUiContainerComponent, Vector4? parColor = null,
+    RenderLayer? parRenderLayer = null)
+  {
+    var (uiContainerObject, uiContainer) = CreateContainerUi(parScene, parUiContainerComponent);
+    uiContainerObject.AddComponent(new Box2DRenderer
+    {
+      Color = parColor ?? new Vector4(0.1f, 0.1f, 0.1f, 1), RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT
+    });
+
     return (uiContainerObject, uiContainer);
   }
 
   public static (GameObject, UiComponent) CreateLogoUi(Engine.Engine parEngine, Engine.Scene.Scene parScene,
-    UiContainerComponent parContainer)
+    UiContainerComponent parContainer, RenderLayer? parRenderLayer = null)
   {
-    var logoObject = new GameObject
-    {
-      Transform =
+    UiComponent uiComponent;
+    var logoObject = GameObjectUtil.CreateGameObject(parScene,
+      new Transform
       {
         Translation = new Vector3(0, 0, -10), Scale = new Vector3(3), Size = new Vector3(1.6385869565f, 1f, 1f)
-      }
-    };
-    logoObject.AddComponent(new Box2DRenderer
+      }, [
+        new Box2DRenderer
         {
-      Texture = parEngine.AssetResourceManager.Load<Texture>("texture/doom_logo.png")
-    });
-
-    var uiComponent = new UiComponent { Container = null, Anchor = Anchor.Center };
-
-    logoObject.AddComponent(new UiComponent
-    {
-      Container = parContainer, Anchor = Anchor.Center, Offset = new Vector2(0, 3f)
-    });
-
-    parScene.Add(logoObject);
+          Texture = parEngine.AssetResourceManager.Load<Texture>("texture/doom_logo.png"),
+          RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT
+        },
+        uiComponent = new UiComponent { Container = parContainer, Anchor = Anchor.Center }
+      ]
+    );
 
     return (logoObject, uiComponent);
   }
 
-  public static (GameObject, StackComponent) CreateStackUi(Engine.Scene.Scene parScene,
-    UiContainerComponent parContainer, List<UiComponent> parChildren, Orientation parOrientation = Orientation.Vertical)
+  public static (GameObject, (UiComponent, Box2DRenderer)) CreateSpriteUi(Engine.Scene.Scene parScene,
+    UiContainerComponent parContainer,
+    Texture? parTexture, RenderLayer? parRenderLayer = null)
   {
-    var stack = new StackComponent
+    var spriteObject = new GameObject();
+    var spriteComponent = new Box2DRenderer
     {
-      Container = parContainer,
-      Anchor = Anchor.Center
+      Texture = parTexture, RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT
     };
+    spriteObject.AddComponent(spriteComponent);
+    var uiComponent = new UiContainerComponent { Container = parContainer };
+    spriteObject.AddComponent(uiComponent);
 
-    stack.Children.AddRange(parChildren);
-    foreach (var child in parChildren)
-    {
-      child.Container = stack;
+    return (spriteObject, (uiComponent, spriteComponent));
   }
 
-    var stackObject = new GameObject
+  public static (GameObject, StackComponent) CreateStackUi(Engine.Scene.Scene parScene,
+    StackComponent parStackComponent, RenderLayer? parRenderLayer = null)
   {
-      Transform = { Translation = new Vector3(0, 0, -1) }
-    };
-    stackObject.AddComponent(stack);
-    stackObject.AddComponent(new Box2DRenderer { Color = new Vector4(1, 0, 0, 1) });
+    foreach (var child in parStackComponent.Children)
+      child.Container = parStackComponent;
+
+    var stackObject = new GameObject { Transform = { Translation = new Vector3(0, 0, -1) } };
+    stackObject.AddComponent(parStackComponent);
+    // stackObject.AddComponent(new Box2DRenderer { Color = new Vector4(1, 0, 0, 1), RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT });
 
     parScene.Add(stackObject);
 
-    return (stackObject, stack);
+    return (stackObject, parStackComponent);
+  }
+
+  public static (GameObject, SelectorComponent) CreateSelectorUi(Engine.Scene.Scene parScene,
+    SelectorComponent parSelectorComponent, RenderLayer? parRenderLayer = null)
+  {
+    var selectorObject = new GameObject { Transform = { Translation = new Vector3(0, 0, -1) } };
+    selectorObject.AddComponent(parSelectorComponent);
+    var innerSelectorObject = new GameObject
+    {
+      Transform = { Translation = new Vector3(-0.5f, 0, 0), Size = new Vector3(0.25f, 0.5f, 1f) }
+    };
+    innerSelectorObject.AddComponent(new Box2DRenderer
+    {
+      Color = new Vector4(1, 1, 1, 1), RenderLayer = parRenderLayer ?? RenderLayer.DEFAULT
+    });
+
+    parScene.Add(selectorObject);
+    parScene.AddChild(selectorObject, innerSelectorObject);
+
+    return (selectorObject, parSelectorComponent);
   }
 }

Engine/src/Engine.cs

@@ -4,6 +4,7 @@ using Engine.Asset;
 using Engine.Asset.Font;
 using Engine.Asset.Mesh;
 using Engine.Graphics;
+using Engine.Graphics.Pipeline;
 using Engine.Graphics.Pixel;
 using Engine.Graphics.Shader;
 using Engine.Graphics.Texture;
@@ -155,27 +156,32 @@ public sealed class Engine
       Debug.RenderDocStartFrame();
 #endif
 
-      Renderer.StartFrame();
+      Renderer.RunScheduledActions();
 
-      var projection = Matrix4.Identity;
-      var view = Matrix4.Identity;
-      lock (_sceneLock)
+      if (Monitor.TryEnter(_sceneLock))
       {
-        var camera = SceneManager.CurrentScene?.MainCamera;
-        if (camera != null)
+        Renderer.StartFrame();
+        var matrices = new Dictionary<RenderLayer, (Matrix4, Matrix4)>();
+        {
+          var cameras = SceneManager.CurrentScene?.Cameras;
+          if (cameras != null)
+          {
+            foreach (var (renderLayer, camera) in cameras)
             {
               camera.ScreenSize = new Vector2i(Renderer.ViewportWidth, Renderer.ViewportHeight);
-          projection = camera.Projection;
-          view = camera.View;
+              matrices[renderLayer] = (camera.Projection, camera.View);
+            }
           }
 
           SceneManager.Render();
         }
+        Monitor.Exit(_sceneLock);
 
-      Renderer.EndFrame(projection, view);
+        Renderer.EndFrame(matrices);
 
         Presenter!.Present(Renderer.RenderTexture);
         Presenter!.Render();
+      }
 
 #if DEBUG
       Debug.RenderDocEndFrame();

Engine/src/Graphics/GenericRenderer.cs

@@ -10,11 +10,11 @@ namespace Engine.Graphics;
 public class GenericRenderer : IRenderer
 {
   public QuadRenderer QuadRenderer => _quadRenderer ??= new QuadRenderer(_engine, 1024 * 8);
-  public AnyMeshRenderer AnyMeshRenderer => _globalMeshRenderer ??= new AnyMeshRenderer(_engine, 1024);
+  public AnyMeshRenderer AnyMeshRenderer => _anyMeshRenderer ??= new AnyMeshRenderer(_engine, 1024);
   public TextRenderer TextRenderer => _textRenderer ??= new TextRenderer(_engine, 1024 * 8);
 
   private QuadRenderer? _quadRenderer;
-  private AnyMeshRenderer? _globalMeshRenderer;
+  private AnyMeshRenderer? _anyMeshRenderer;
   private TextRenderer? _textRenderer;
 
   private readonly Engine _engine;
@@ -47,14 +47,23 @@ public class GenericRenderer : IRenderer
     GL.ClearColor(0.0f, 0.0f, 0.0f, 0.0f);
     GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
 
-    QuadRenderer.Render(parProjectionMatrix, parViewMatrix);
-    QuadRenderer.Reset();
+    if (_anyMeshRenderer != null)
+    {
+      _anyMeshRenderer.Render(parProjectionMatrix, parViewMatrix);
+      _anyMeshRenderer.Reset();
+    }
 
-    AnyMeshRenderer.Render(parProjectionMatrix, parViewMatrix);
-    AnyMeshRenderer.Reset();
+    if (_quadRenderer != null)
+    {
+      _quadRenderer.Render(parProjectionMatrix, parViewMatrix);
+      _quadRenderer.Reset();
+    }
 
-    TextRenderer.Render(parProjectionMatrix, parViewMatrix);
-    TextRenderer.Reset();
+    if (_textRenderer != null)
+    {
+      _textRenderer.Render(parProjectionMatrix, parViewMatrix);
+      _textRenderer.Reset();
+    }
 
     _framebuffer.Unbind();
 

Engine/src/Graphics/Renderer.cs

@@ -74,8 +74,8 @@ public class Renderer
 
     // GL.Enable(EnableCap.FramebufferSrgb);
 
-    GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
     GL.Enable(EnableCap.Blend);
+    GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
 
     GL.Viewport(0, 0, parWidth, parHeight);
   }
@@ -118,21 +118,22 @@ public class Renderer
   {
     EnsureRenderThread();
 
-    RunScheduledActions();
-
     foreach (var renderer in _renderers.Values)
     {
       renderer.StartFrame();
     }
   }
 
-  internal void EndFrame(in Matrix4 parViewMatrix, in Matrix4 parProjectionMatrix)
+  internal void EndFrame(Dictionary<RenderLayer, (Matrix4, Matrix4)> parMatrices)
   {
     EnsureRenderThread();
 
-    foreach (var renderer in _renderers.Values)
+    foreach (var (renderLayer, renderer) in _renderers)
     {
-      renderer.EndFrame(in parViewMatrix, in parProjectionMatrix);
+      if (!parMatrices.TryGetValue(renderLayer, out var matrices))
+        renderer.EndFrame(Matrix4.Identity, Matrix4.Identity);
+      else
+        renderer.EndFrame(in matrices.Item1, in matrices.Item2);
     }
 
     _framebuffer.Bind();
@@ -143,8 +144,11 @@ public class Renderer
     GL.ClearColor(0.0f, 0.0f, 0.0f, 1.0f);
     GL.Clear(ClearBufferMask.ColorBufferBit);
 
-    foreach (var renderer in _renderers.Values)
+    foreach (var (renderLayer, renderer) in _renderers)
     {
+      if (!parMatrices.ContainsKey(renderLayer))
+        continue;
+
       QuadRenderer.Commit(Matrix4.CreateScale(2f, -2f, 1f), Vector4.One, renderer._framebuffer.TextureInternal);
       QuadRenderer.Render(Matrix4.Identity, Matrix4.Identity);
       QuadRenderer.Reset();
@@ -167,7 +171,7 @@ public class Renderer
     }
   }
 
-  private void RunScheduledActions()
+  internal void RunScheduledActions()
   {
     while (_scheduleActions.TryDequeue(out var action))
     {

Engine/src/Input/KeyboardButtonCode.cs

@@ -29,6 +29,17 @@ public enum KeyboardButtonCode
   Y,
   Z,
 
+  D1,
+  D2,
+  D3,
+  D4,
+  D5,
+  D6,
+  D7,
+  D8,
+  D9,
+  D0,
+
   Ctrl,
   Alt,
   Shift,

Engine/src/Input/WindowInputHandler.cs

@@ -103,6 +103,16 @@ public class WindowInputHandler(Window parWindow) : IInputHandler
       KeyboardButtonCode.End => Keys.End,
       KeyboardButtonCode.PageUp => Keys.PageUp,
       KeyboardButtonCode.PageDown => Keys.PageDown,
+      KeyboardButtonCode.D0 => Keys.D0,
+      KeyboardButtonCode.D1 => Keys.D1,
+      KeyboardButtonCode.D2 => Keys.D2,
+      KeyboardButtonCode.D3 => Keys.D3,
+      KeyboardButtonCode.D4 => Keys.D4,
+      KeyboardButtonCode.D5 => Keys.D5,
+      KeyboardButtonCode.D6 => Keys.D6,
+      KeyboardButtonCode.D7 => Keys.D7,
+      KeyboardButtonCode.D8 => Keys.D8,
+      KeyboardButtonCode.D9 => Keys.D9,
       _ => throw new ArgumentOutOfRangeException(nameof(parKeyboardButtonCode), parKeyboardButtonCode, null)
     };
   }

Engine/src/Resource/Loader/FontLoader.cs

@@ -19,7 +19,10 @@ public class FontLoader : IResourceLoader
 
     var atlasPath = Path.Combine(parPath, "atlas.png");
     using var atlasStream = parStreamProvider.GetStream(atlasPath);
-    var atlasTexture = ImageLoader.Load(atlasStream).ToStaticTexture();
+    var atlasImage = ImageLoader.Load(atlasStream);
+
+    // TODO: We should not be using engine instance here
+    var atlasTexture = Engine.Instance.Renderer.Schedule(() => atlasImage.ToStaticTexture()).Result;
 
     return new Font(atlasTexture, metadata);
   }

Engine/src/Resource/Loader/TextureLoader.cs

@@ -7,6 +7,7 @@ public class TextureLoader : IResourceLoader
     using var stream = parStreamProvider.GetStream(parPath);
     var image = ImageLoader.Load(stream);
 
-    return image.ToStaticTexture();
+    // TODO: We should not be using engine instance here
+    return Engine.Instance.Renderer.Schedule(() => image.ToStaticTexture()).Result;
   }
 }

Engine/src/Scene/Component/BuiltIn/Camera.cs

@@ -1,4 +1,5 @@
 using Engine.Graphics.Camera;
+using Engine.Graphics.Pipeline;
 using OpenTK.Mathematics;
 using Serilog;
 
@@ -13,6 +14,8 @@ public abstract class Camera(
   public float NearPlane { get; set; } = parNearPlane;
   public float FarPlane { get; set; } = parFarPlane;
 
+  public RenderLayer RenderLayer { get; set; } = RenderLayer.DEFAULT;
+
   private Vector2i _screenSize = new(1, 1);
 
   public abstract Matrix4 View { get; }

Engine/src/Scene/Component/Component.cs

@@ -25,6 +25,14 @@ public abstract class Component : IUpdate, IRender
   public virtual void Destroy()
   {
   }
+
+  public virtual void Enable()
+  {
+  }
+
+  public virtual void Disable()
+  {
+  }
 }
 
 public static class ComponentTypeExtensions

Engine/src/Scene/GameObject.cs

@@ -7,6 +7,17 @@ namespace Engine.Scene;
 public sealed class GameObject : IUpdate, IRender
 {
   public Guid Id { get; } = Guid.NewGuid();
+
+  public bool IsEnabled
+  {
+    get => IsSelfEnabled && IsParentEnabled;
+    set => IsSelfEnabled = value;
+  }
+
+  private bool IsSelfEnabled { get; set; } = true;
+  private bool _prevIsSelfEnabled = true;
+  private bool IsParentEnabled => Scene?.Hierarchy.GetParent(this)?.IsEnabled ?? true;
+
   public Transform Transform { get; }
 
   internal Scene? Scene { get; set; }
@@ -50,6 +61,30 @@ public sealed class GameObject : IUpdate, IRender
 
   public void Update(double parDeltaTime)
   {
+    if (!IsEnabled)
+    {
+      if (!_prevIsSelfEnabled)
+        return;
+
+      foreach (var component in _components)
+      {
+        component.Disable();
+      }
+
+      _prevIsSelfEnabled = false;
+      return;
+    }
+
+    if (!_prevIsSelfEnabled)
+    {
+      foreach (var component in _components)
+      {
+        component.Enable();
+      }
+    }
+
+    _prevIsSelfEnabled = true;
+
     foreach (var component in _components)
     {
       component.Update(parDeltaTime);
@@ -58,6 +93,9 @@ public sealed class GameObject : IUpdate, IRender
 
   public void Render()
   {
+    if (!IsEnabled)
+      return;
+
     foreach (var component in _components)
     {
       component.Render();
@@ -113,7 +151,7 @@ public sealed class GameObject : IUpdate, IRender
 
       parComponent.GameObject = this;
       _components.Add(parComponent);
-      _addedComponentTypes.Add(typeof(T).GetComponentBaseType());
+      _addedComponentTypes.Add(parComponent.GetType().GetComponentBaseType());
     });
   }
 

Engine/src/Scene/Hierarchy.cs

@@ -32,7 +32,7 @@ public class Hierarchy<T>
     {
       if (_parentLookup.ContainsKey(parObj))
       {
-        throw new ArgumentException("Object is already added to hierarchy");
+        return;
       }
 
       _childrenLookup.Add(parObj, new List<T>());

Engine/src/Scene/Scene.cs

@@ -1,4 +1,5 @@
 using Engine.Graphics.Camera;
+using Engine.Graphics.Pipeline;
 using Engine.Scene.Component.BuiltIn;
 
 namespace Engine.Scene;
@@ -6,7 +7,8 @@ namespace Engine.Scene;
 public class Scene : IUpdate, IRender
 {
   public bool IsPlaying { get; private set; }
-  public ICamera? MainCamera { get; private set; }
+  public IReadOnlyDictionary<RenderLayer, ICamera> Cameras => _cameras;
+  private readonly Dictionary<RenderLayer, ICamera> _cameras = new();
 
   internal Hierarchy<GameObject> Hierarchy { get; } = new();
 
@@ -21,14 +23,25 @@ public class Scene : IUpdate, IRender
 
     ProcessChanges();
 
-    MainCamera = FindFirstComponent<Camera>();
+    var allCameras = FindAllComponents<Camera>();
+    foreach (var camera in allCameras)
+    {
+      _cameras.Add(camera.RenderLayer, camera);
+    }
 
     IsPlaying = true;
   }
 
+  public List<T> FindAllComponents<T>() where T : Component.Component
+  {
+    return Hierarchy.Objects.Select(parGameObject => parGameObject.GetComponent<T>())
+      .Where(parComponent => parComponent != null).ToList()!;
+  }
+
   public T? FindFirstComponent<T>() where T : Component.Component
   {
-    return Hierarchy.Objects.Select(parGameObject => parGameObject.GetComponent<T>()).FirstOrDefault(parComponent => parComponent != null);
+    return Hierarchy.Objects.Select(parGameObject => parGameObject.GetComponent<T>())
+      .FirstOrDefault(parComponent => parComponent != null);
   }
 
   public void Update(double parDeltaTime)
@@ -87,15 +100,10 @@ public class Scene : IUpdate, IRender
     });
   }
 
-  public void SetChild(GameObject parParent, GameObject parChild)
-  {
-    Hierarchy.AddChild(parParent, parChild);
-  }
-
   public void AddChild(GameObject parParent, GameObject parChild)
   {
     Add(parChild);
-    SetChild(parParent, parChild);
+    Hierarchy.AddChild(parParent, parChild);
   }
 
   public void Remove(GameObject parGameObject)

Engine/src/Scene/SceneManager.cs

@@ -5,9 +5,10 @@ public class SceneManager : IUpdate, IRender
   public Scene? CurrentScene => _currentScene;
 
   private Scene? _currentScene;
-  private Scene? _nextScene;
+  // private Scene? _nextScene;
+  private Func<Scene>? _nextScene;
 
-  public void TransitionTo(Scene parScene)
+  public void TransitionTo(Func<Scene>? parScene)
   {
     _nextScene = parScene;
   }
@@ -17,7 +18,7 @@ public class SceneManager : IUpdate, IRender
     if (_nextScene != null)
     {
       _currentScene?.Exit();
-      _currentScene = _nextScene;
+      _currentScene = _nextScene();
       _nextScene = null;
       _currentScene.Enter();
     }

Engine/src/Util/Timer.cs

@@ -0,0 +1,62 @@
+namespace Engine.Util;
+
+public class Timer
+{
+  public event Action? OnFinished;
+  public event Action<double>? OnUpdate;
+
+  public double TotalTime
+  {
+    get => _totalTime;
+    set
+    {
+      if (value <= 0)
+        ArgumentOutOfRangeException.ThrowIfNegativeOrZero(value);
+
+      _totalTime = value;
+      CurrentTime = value;
+    }
+  }
+
+  public double CurrentTime
+  {
+    get => _currentTime;
+    set
+    {
+      if (value < 0)
+        value = 0;
+      if (value > TotalTime)
+        value = TotalTime;
+
+      _currentTime = value;
+      OnUpdate?.Invoke(value);
+
+      if (IsFinished)
+        OnFinished?.Invoke();
+    }
+  }
+
+  public bool IsFinished => _currentTime <= 0;
+
+  private double _totalTime;
+  private double _currentTime;
+
+  public Timer(double parTotalTime)
+  {
+    if (parTotalTime <= 0)
+      ArgumentOutOfRangeException.ThrowIfNegativeOrZero(parTotalTime);
+
+    _totalTime = parTotalTime;
+    _currentTime = parTotalTime;
+  }
+
+  public void Update(double parDeltaTime)
+  {
+    CurrentTime -= parDeltaTime;
+  }
+
+  public void Reset()
+  {
+    CurrentTime = TotalTime;
+  }
+}

EngineTests/src/Scene/HierarchyTests.cs

@@ -169,16 +169,16 @@ public class HierarchyTests
     Assert.That(_hierarchy.GetChildren(obj).Count(), Is.EqualTo(0));
   }
 
-  [Test]
-  public void AddDuplicateObjectThrows()
-  {
-    var obj = new object();
-
-    _hierarchy.Add(obj);
-    _hierarchy.Add(obj);
-
-    Assert.Throws<ArgumentException>(() => _hierarchy.ProcessChanges());
-  }
+  // [Test]
+  // public void AddDuplicateObjectThrows()
+  // {
+  //   var obj = new object();
+  //
+  //   _hierarchy.Add(obj);
+  //   _hierarchy.Add(obj);
+  //
+  //   Assert.Throws<ArgumentException>(() => _hierarchy.ProcessChanges());
+  // }
 
   [Test]
   public void AddChild_ParentNotInHierarchyThrows()

PresenterConsole/src/ConsoleInputHandler.cs

@@ -99,6 +99,16 @@ public class ConsoleInputHandler : IInputHandler
       KeyboardButtonCode.End => 0x23,
       KeyboardButtonCode.PageUp => 0x21,
       KeyboardButtonCode.PageDown => 0x22,
+      KeyboardButtonCode.D0 => 0x30,
+      KeyboardButtonCode.D1 => 0x31,
+      KeyboardButtonCode.D2 => 0x32,
+      KeyboardButtonCode.D3 => 0x33,
+      KeyboardButtonCode.D4 => 0x34,
+      KeyboardButtonCode.D5 => 0x35,
+      KeyboardButtonCode.D6 => 0x36,
+      KeyboardButtonCode.D7 => 0x37,
+      KeyboardButtonCode.D8 => 0x38,
+      KeyboardButtonCode.D9 => 0x39,
       _ => throw new ArgumentOutOfRangeException(nameof(parKeyboardButtonCode), parKeyboardButtonCode, null)
     };
 }

PresenterWpf/src/WPFInputHandler.cs

@@ -163,6 +163,16 @@ public class WpfInputHandler : IInputHandler
     Key.Insert => (int)KeyboardButtonCode.Insert,
     Key.Home => (int)KeyboardButtonCode.Home,
     Key.End => (int)KeyboardButtonCode.End,
+    Key.D0 => (int)KeyboardButtonCode.D0,
+    Key.D1 => (int)KeyboardButtonCode.D1,
+    Key.D2 => (int)KeyboardButtonCode.D2,
+    Key.D3 => (int)KeyboardButtonCode.D3,
+    Key.D4 => (int)KeyboardButtonCode.D4,
+    Key.D5 => (int)KeyboardButtonCode.D5,
+    Key.D6 => (int)KeyboardButtonCode.D6,
+    Key.D7 => (int)KeyboardButtonCode.D7,
+    Key.D8 => (int)KeyboardButtonCode.D8,
+    Key.D9 => (int)KeyboardButtonCode.D9,
     _ => -1
   };