//Function to paint on the FORM (repaint also)
        private void Form1_Paint(object sender, PaintEventArgs e)
        {
            // Clear the screen
            e.Graphics.Clear(Color.White);
            // Set the Background
            BG.Draw(e.Graphics);
            // Set the upper Background
            BG1.Draw(e.Graphics);
            //Draw clouds
            foreach (cloud t in clouds)
            {
                t.Draw(e.Graphics);
            }
            //Draw the player Rockets
            for (int i = 0; i < playerPlane.getFiredRocekts().Count; i++)
            {
                playerPlane.getFiredRocekts()[i].Draw(e.Graphics);
            }
            //Draw Bullets
            for (int i = 0; i < playerPlane.getFiredBullets().Count; i++)
            {
                playerPlane.getFiredBullets()[i].Draw(e.Graphics);
            }
            //Check if the Boss Fight is taking place
            if (!BosFight)
            {
                //Draw enemy plain at last possition
                for (int i = 0; i < Planes.Count; i++)
                {
                    Planes[i].Draw(e.Graphics);
                }
                //Draw "Bam picture" if a enemy plane has been destroyed
                if (Blast)
                {
                    Blast = false;
                    e.Graphics.DrawImage(Images.getWinImg(), xBam, yBam);
                }
            }
            //Draw the Boss and his Rockets
            else
            {
                boss.Draw(e.Graphics);
                foreach (Rocket r in bossRockets)
                {
                    r.Draw(e.Graphics);
                }
            }
            //Check if the player is dead to draw the last image
            if (playerPlane.getPlayerLife() == 0)
            {
                e.Graphics.DrawImage(Images.getLoseImg(), playerPlane.getX(), playerPlane.getY());
            }
            // Draw the player plane
            else
            {
                playerPlane.Draw(e.Graphics);
            }
        }