Add project files.

AlientAttack.MonoGame/Things/SpriteUpdateContext.cs

@@ -0,0 +1,20 @@
+using AlienAttack.MonoGame.View;
+using Microsoft.Xna.Framework;
+using System;
+
+namespace AlienAttack.MonoGame.Things;
+
+public class SpriteUpdateContext(AlienAttackGame game)
+{
+    public ViewTransform ViewTransform => game.ViewTransform;
+    public required Action<Sprite> SpawnSprite { get; init; }
+    public required Random Random { get; init; }
+    public required GameTime GameTime { get; init; }
+}
+
+public class SpriteCollisionContext(AlienAttackGame game)
+{
+    public ViewTransform ViewTransform => game.ViewTransform;
+    public required Sprite Sprite { get; init; }
+    public required Action<Sprite> SpawnSprite { get; init; }
+}