Time for action – destroying enemies

1. Add checkShotEnemyImpacts() and checkRocketSplashDamage() to the Collision Detection region of the WeaponManager class:

   private static void checkShotEnemyImpacts(Sprite shot)
   {
       if (shot.Expired)
       {
           return;
       }
   
       foreach (Enemy enemy in EnemyManager.Enemies)
       {
           if (!enemy.Destroyed)
           {
               if (shot.IsCircleColliding(
                   enemy.EnemyBase.WorldCenter, 
                   enemy.EnemyBase.CollisionRadius))
               {
                   shot.Expired = true;
                   enemy.Destroyed = true;
                   if (shot.Frame == 0)
                   {
                       EffectsManager.AddExplosion(
                           enemy.EnemyBase.WorldCenter,
                           enemy.EnemyBase.Velocity / 30);
                   }
                   else
                   {
                       if (shot.Frame == 1)
                       {
                           createLargeExplosion(shot.WorldCenter);
                    ...