Added texture cache and sprite origins.

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

@@ -1,5 +1,6 @@
 using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
+using System;
 
 namespace AlienAttack.MonoGame.Things.Enemies.Mines;
 
@@ -9,12 +10,12 @@ public abstract class Mine : MoveableSprite
     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)
     {
+        Origin = new(30, 33);
         BoundBox = new(10, 14, 40, 38);
         YVelocity = 1;
         XVelocity = 0;
@@ -74,6 +75,18 @@ public abstract class Mine : MoveableSprite
 
         CollisionBox = new Rectangle((int)XPosition + BoundBox.X - (int)Origin.X, (int)YPosition + BoundBox.Y - (int)Origin.Y, BoundBox.Width, BoundBox.Height);
 
+        float xDiff = (XPosition + Origin.X) - (context.Player.XPosition + context.Player.Origin.X);
+        float yDiff = (YPosition + Origin.Y) - (context.Player.YPosition + context.Player.Origin.Y);
+
+        double distance = Math.Sqrt(xDiff * xDiff + yDiff * yDiff);
+
+        if (distance < 100)
+        {
+            IsDead = true;
+            SpawnExplosion(context);
+            return;
+        }
+
         if (YPosition - Origin.Y > context.ViewTransform.ScreenHeight)
         {
             IsDead = true;
@@ -87,4 +100,10 @@ public abstract class Mine : MoveableSprite
             Rotation = 0;
         }
     }
+
+    private void SpawnExplosion(SpriteUpdateContext context)
+    {
+        context.SpawnSprite(new Explosion((int)XPosition, (int)YPosition, XVelocity, YVelocity));
+        context.AudioManager.PlayExplosion();
+    }
 }