public Form1()
        {
            InitializeComponent();


            bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);
            g   = Graphics.FromImage(bmp);
            pictureBox1.Image = bmp;


            brushwhite  = new SolidBrush(Color.White);
            brushred    = new SolidBrush(Color.Red);
            brushgreen  = new SolidBrush(Color.Green);
            brushyellow = new SolidBrush(Color.Yellow);
            brushblue   = new SolidBrush(Color.Blue);

            aster1 = new MyAsters(180, 200);
            aster2 = new MyAsters(220, 450);
            aster3 = new MyAsters(800, 170);
            aster4 = new MyAsters(610, 510);


            ship   = new SpaceShip(492, 325);
            bullet = new MyBullet(492, 240);
            gun    = new MyGun(490, 325);

            star1 = new MyStars(50, 110);
            star2 = new MyStars(400, 60);
            star3 = new MyStars(650, 100);
            star4 = new MyStars(880, 275);
            star5 = new MyStars(770, 400);
            star6 = new MyStars(865, 570);
            star7 = new MyStars(380, 500);
            star8 = new MyStars(70, 510);
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            bmp = new Bitmap(pictureBox1.Width, pictureBox1.Height);

            g = Graphics.FromImage(bmp);
            g.FillRectangle(brushblue, 0, 0, pictureBox1.Width, pictureBox1.Height);

            pictureBox1.Image = bmp;

            x1++;
            y1++;
            if (x1 == Width)
            {
                x1 = 0;
            }
            if (y1 == Height)
            {
                y1 = 0;
            }
            x2++;
            y2--;
            if (x2 == Width)
            {
                x2 = 0;
            }
            if (y2 == 0)
            {
                y2 = Height;
            }
            x3--;
            y3++;
            if (x3 == 0)
            {
                x3 = Width;
            }
            if (y3 == Height)
            {
                y3 = 0;
            }
            x4--;
            y4--;
            if (x4 == 0)
            {
                x4 = Width;
            }
            if (y4 == 0)
            {
                y4 = Height;
            }

            aster1 = new MyAsters(x1, y1);
            aster2 = new MyAsters(x2, y2);
            aster3 = new MyAsters(x3, y3);
            aster4 = new MyAsters(x4, y4);

            a1++;
            b1++;
            if (a1 == Width)
            {
                a1 = 0;
            }
            if (b1 == Height)
            {
                b1 = 0;
            }
            a2--;
            b2++;
            if (a2 == 0)
            {
                a2 = Width;
            }
            if (b2 == Height)
            {
                b2 = 0;
            }
            a3++;
            b3++;
            if (a3 == Width)
            {
                a3 = 0;
            }
            if (b3 == Height)
            {
                b3 = 0;
            }
            a4--;
            b4--;
            if (a4 == 0)
            {
                a4 = Width;
            }
            if (b4 == 0)
            {
                b4 = Height;
            }
            a5--;
            b5++;
            if (a5 == 0)
            {
                a5 = Width;
            }
            if (b5 == Height)
            {
                b5 = 0;
            }
            a6--;
            b6--;
            if (a6 == 0)
            {
                a6 = Width;
            }
            if (b6 == 0)
            {
                b6 = Height;
            }
            a7++;
            b7--;
            if (a7 == Width)
            {
                a7 = 0;
            }
            if (b7 == 0)
            {
                b7 = Height;
            }
            a8++;
            b8--;
            if (a8 == Width)
            {
                a8 = 0;
            }
            if (b8 == 0)
            {
                b8 = Height;
            }

            star1 = new MyStars(a1, b1);
            star2 = new MyStars(a2, b2);
            star3 = new MyStars(a3, b3);
            star4 = new MyStars(a4, b4);
            star5 = new MyStars(a5, b5);
            star6 = new MyStars(a6, b6);
            star7 = new MyStars(a7, b7);
            star8 = new MyStars(a8, b8);

            c1++;
            c2--;
            if (c1 == Width)
            {
                c1 = 0;
            }
            if (c2 == 0)
            {
                c2 = Height;
            }
            bullet = new MyBullet(c1, c2);


            Paint1();
        }