public void checkKillBullet(EvilChopper c)
        {
            if (Position.X > c.Position.X + 600)
            {
                this.alive = false;
            }
            if (Position.X < c.Position.X - 600)
            {
                this.alive = false;
            }
            if(this.BoundingBox.Intersects(c.BoundingBox)){
                this.alive=false;
                c.alive=false;

            }
        }
        public void Veloc(EvilChopper chopper)
        {
            if (chopper.Position.X > Position.X)
            {

                Velocity.X += 0.1f;

                if (Velocity.X > 5)
                {
                    Velocity.X = 5;
                }

            }
            if (chopper.Position.X <Position.X)
            {
                Velocity.X -= 0.1f;

                if (Velocity.X < -5)
                {
                    Velocity.X = -5;
                }
            }
            if (chopper.Position.X == Position.X)
            {
                Velocity.X = 0;
            }
            if (chopper.Position.Y > Position.Y)
            {

                Velocity.Y += 0.1f;

                if (Velocity.Y > 5)
                {
                    Velocity.Y = 5;
                }
            }
            if (chopper.Position.Y < Position.Y)
            {

                Velocity.Y -= 0.1f;

                if (Velocity.Y < -5)
                {
                    Velocity.Y = -5;
                }
            }
            if (chopper.Position.Y == Position.Y)
            {
               Velocity.Y = 0;
            }
        }
 public void Move(EvilChopper command)
 {
     prePosition = Position;
     Position.X += Velocity.X ;
     Position.Y += Velocity.Y;
 }