Added mines.

AlientAttack.MonoGame/Things/Enemies/Mines/BlueMine.cs

@@ -0,0 +1,6 @@
+namespace AlienAttack.MonoGame.Things.Enemies.Mines;
+
+public class BlueMine(int x, int y) : Mine(x, y)
+{
+    protected override string CoverColor => "Blue";
+}

AlientAttack.MonoGame/Things/Enemies/Mines/GreenMine.cs

@@ -0,0 +1,6 @@
+namespace AlienAttack.MonoGame.Things.Enemies.Mines;
+
+public class GreenMine(int x, int y) : Mine(x, y)
+{
+    protected override string CoverColor => "Green";
+}

AlientAttack.MonoGame/Things/Enemies/Mines/Mine.cs

@@ -0,0 +1,90 @@
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+
+namespace AlienAttack.MonoGame.Things.Enemies.Mines;
+
+public abstract class Mine : MoveableSprite
+{
+    public const int Width = 65;
+    public const int Height = 64;
+
+    protected float Rotation = 0;
+    protected Vector2 Origin = new(30, 33);
+
+    protected abstract string CoverColor { get; }
+
+    public Mine(int x, int y) : base(x, y)
+    {
+        BoundBox = new(10, 14, 40, 38);
+        YVelocity = 1;
+        XVelocity = 0;
+    }
+
+    public override void Draw(SpriteDrawArgs args)
+    {
+        DrawRotor(args);
+        DrawCover(args);
+        //DrawCollisionBox(args);
+    }
+
+    private void DrawRotor(SpriteDrawArgs args)
+    {
+        Texture2D texture = args.Content.Load<Texture2D>("Sprites/Rotor");
+        args.SpriteBatch.Draw(texture, Position, null, DrawColor, Rotation, Origin, 1f, SpriteEffects.None, 1);
+    }
+
+    private void DrawCover(SpriteDrawArgs args)
+    {
+        Texture2D texture = args.Content.Load<Texture2D>($"Sprites/Cover_{CoverColor}");
+        args.SpriteBatch.Draw(texture, Position, null, DrawColor, Rotation, Origin, 1f, SpriteEffects.None, 1);
+    }
+
+    private void DrawCollisionBox(SpriteDrawArgs args)
+    {
+        //var pixel = DebugPixel; // static cached
+
+        Texture2D pixel = new Texture2D(args.SpriteBatch.GraphicsDevice, 1, 1);
+        pixel.SetData(new[] { Color.White });
+
+        //Rectangle r = GetWorldCollisionBox();
+
+        Color c = Color.LimeGreen; // debug color
+
+        // Top
+        args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Y, CollisionBox.Width, 1), c);
+        // Bottom
+        args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Bottom - 1, CollisionBox.Width, 1), c);
+        // Left
+        args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.X, CollisionBox.Y, 1, CollisionBox.Height), c);
+        // Right
+        args.SpriteBatch.Draw(pixel, new Rectangle(CollisionBox.Right - 1, CollisionBox.Y, 1, CollisionBox.Height), c);
+    }
+
+    //Rectangle GetWorldCollisionBox()
+    //{
+    //    int x = (int)(XPosition - Origin.X + BoundBox.X);
+    //    int y = (int)(YPosition - Origin.Y + BoundBox.Y);
+
+    //    return new Rectangle(x, y, BoundBox.Width, BoundBox.Height);
+    //}
+
+    public override sealed void Update(SpriteUpdateContext context)
+    {
+        base.Update(context);
+
+        CollisionBox = new Rectangle((int)XPosition + BoundBox.X - (int)Origin.X, (int)YPosition + BoundBox.Y - (int)Origin.Y, BoundBox.Width, BoundBox.Height);
+
+        if (YPosition - Origin.Y > context.ViewTransform.ScreenHeight)
+        {
+            IsDead = true;
+            return;
+        }
+
+        Rotation += 0.01f;
+
+        if (Rotation > 360f)
+        {
+            Rotation = 0;
+        }
+    }
+}

AlientAttack.MonoGame/Things/Enemies/Mines/RedMine.cs

@@ -0,0 +1,6 @@
+namespace AlienAttack.MonoGame.Things.Enemies.Mines;
+
+public class RedMine(int x, int y) : Mine(x, y)
+{
+    protected override string CoverColor => "Red";
+}

AlientAttack.MonoGame/Things/Player.cs

@@ -71,7 +71,7 @@ public class Player : MoveableSprite
         WeaponDef weaponDef = new()
         {
             Name = "Weapon 1",
-            Bullet = BulletDefinitions.ProtonLarge,
+            Bullet = BulletDefinitions.LaserLarge,
             Pattern = ShotPatterns.TripleSpread,
             FireSfxKey = ""
         };