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DoomDeathmatch/src/Component/UI/TextAlignComponent.cs

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+using Engine.Scene.Component.BuiltIn.Renderer;
+using OpenTK.Mathematics;
+
+namespace DoomDeathmatch.Component.UI;
+
+public class TextAlignComponent : Engine.Scene.Component.Component
+{
+  public Align Alignment { get; set; } = Align.Left;
+
+  private TextRenderer _textRenderer = null!;
+
+  private string? _cachedText;
+
+  public override void Awake()
+  {
+    _textRenderer = GameObject.GetComponent<TextRenderer>()!;
+  }
+
+  public override void Update(double parDeltaTime)
+  {
+    if (_textRenderer.Text == null)
+      return;
+
+    if (_cachedText == _textRenderer.Text)
+      return;
+
+    _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;
+
+    GameObject.Transform.Translation.Xy = offset;
+  }
+
+  public Vector2 GetOffset(Vector2 parSize)
+  {
+    return Alignment switch
+    {
+      Align.Left => new Vector2(0, -parSize.Y / 2),
+      Align.Center => new Vector2(-parSize.X / 2, -parSize.Y / 2),
+      Align.Right => new Vector2(-parSize.X, -parSize.Y / 2),
+      _ => throw new ArgumentOutOfRangeException(nameof(Alignment), Alignment, null)
+    };
+  }
+
+  public enum Align
+  {
+    Left,
+    Center,
+    Right
+  }
+}