Updated asteriods, mines, and explosions.

AlientAttack.MonoGame/Things/Asteroids/Asteroid.cs

@@ -1,27 +1,28 @@
-using Microsoft.Xna.Framework;
+using AlienAttack.MonoGame.Things.Bullets;
+using AlienAttack.MonoGame.Things.Explosions;
+using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
 
 namespace AlienAttack.MonoGame.Things.Asteroids;
 
-public class Asteroid : MoveableSprite
+public abstract class Asteroid : MoveableSprite
 {
-    public const int Width = 39;
-    public const int Height = 37;
+    protected abstract int MaxHealth { get; }
+    protected abstract string TextureName { get; }
 
-    protected float Rotation = 0;
+    protected int Health { get; set; }
+    protected float RotationSpeed { get; set; } = 1f;
 
     public Asteroid(int x, int y) : base(x, y)
     {
-        Origin = new(Width / 2, Height / 2);
-        BoundBox = new(0, 0, Width, Height);
-        YVelocity = 1;
-        XVelocity = 0;
+        Health = MaxHealth;
+        RotationSpeed = 1f;
     }
 
     public override void Draw(SpriteDrawArgs args)
     {
-        Texture2D texture = args.Content.Load<Texture2D>("Sprites/Asteroid 01");
-        args.SpriteBatch.Draw(texture, Position, null, DrawColor, Rotation, Origin, 1f, SpriteEffects.None, 1);
+        Texture2D texture = args.Textures.Get(TextureName);
+        args.SpriteBatch.Draw(texture, Position, null, DrawColor, Rotation, Origin, Scale, SpriteEffects.None, 1);
 
         base.Draw(args);
     }
@@ -32,17 +33,33 @@ public class Asteroid : MoveableSprite
 
         CollisionBox = new Rectangle((int)XPosition + BoundBox.X - (int)Origin.X, (int)YPosition + BoundBox.Y - (int)Origin.Y, BoundBox.Width, BoundBox.Height);
 
+        if (Health <= 0)
+        {
+            IsDead = true;
+            context.SpawnSprite(new Explosion((int)XPosition, (int)YPosition, XVelocity, YVelocity));
+            context.AudioManager.PlayExplosion();
+            return;
+        }
+
         if (YPosition - Origin.Y > context.ViewTransform.ScreenHeight)
         {
             IsDead = true;
             return;
         }
 
-        Rotation += 0.01f;
+        Rotation = MathHelper.WrapAngle(Rotation + RotationSpeed * context.DeltaTime);
+    }
 
-        if (Rotation > 360f)
+    public override void OnCollision(SpriteCollisionContext context)
+    {
+        if (context.Sprite is Bullet bullet && bullet.Owner is Player)
         {
-            Rotation = 0;
+            Health -= bullet.Damage;
+        }
+
+        if (context.Sprite is Player)
+        {
+            Health = 0;
         }
     }
 }