Add project files.

AlientAttack.MonoGame/Things/Weapons/IWeapon.cs

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+namespace AlienAttack.MonoGame.Things.Weapons;
+
+public interface IWeapon
+{
+    int FireThreshold { get; }
+    void UpdateFireThreshold();
+    bool TryFire(Sprite owner, SpriteUpdateContext context);
+}

AlientAttack.MonoGame/Things/Weapons/Minigun.cs

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+using AlienAttack.MonoGame.Things.Bullets;
+using Microsoft.Xna.Framework;
+
+namespace AlienAttack.MonoGame.Things.Weapons;
+
+public class Minigun : Weapon
+{
+    public override int FireThreshold => 15;
+
+    public override void Fire(Sprite owner, SpriteUpdateContext context)
+    {
+        // Calculate bullet spawn positions relative to the player's bounding box
+        int x1 = (int)owner.XPosition + 12;
+        int x2 = (int)owner.XPosition + owner.BoundBox.Width - 20;
+        int y = (int)owner.YPosition + 6;
+
+        // Create bullets with velocity (0, -4)
+        MinigunBulletSmall bullet1 = new(x1, y, 0, -6, owner);
+        MinigunBulletSmall bullet2 = new(x2, y, 0, -6, owner);
+
+        // Queue the bullets for spawning
+        context.SpawnSprite(bullet1);
+        context.SpawnSprite(bullet2);
+    }
+}
+
+public class FastMinigun : Weapon
+{
+    public override int FireThreshold => 10;
+
+    public override void Fire(Sprite owner, SpriteUpdateContext context)
+    {
+        // Calculate bullet spawn positions relative to the player's bounding box
+        float x = (owner.Position.X - (7/2) + owner.BoundBox.Width / 2);
+        float y = owner.YPosition - 16;
+
+        // Create bullets with velocity (0, -4)
+        MinigunBulletSmall bullet = new(x, y, 0, -6, owner);
+
+        // Queue the bullets for spawning
+        context.SpawnSprite(bullet);
+    }
+}

AlientAttack.MonoGame/Things/Weapons/Weapon.cs

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+namespace AlienAttack.MonoGame.Things.Weapons;
+
+public abstract class Weapon : IWeapon
+{
+    public abstract int FireThreshold { get; }
+    public int CurrentFireThreshold { get; private set; }
+
+    public void UpdateFireThreshold()
+    {
+        if (CurrentFireThreshold > 0)
+            CurrentFireThreshold--;
+    }
+
+    public bool TryFire(Sprite owner, SpriteUpdateContext context)
+    {
+        if (CurrentFireThreshold > 0)
+            return false;
+
+        Fire(owner, context);
+        CurrentFireThreshold = FireThreshold;
+
+        return true;
+    }
+
+    public abstract void Fire(Sprite owner, SpriteUpdateContext context);
+}