Adding introductory text to each level

We have a good end to the levels, but the player may not be sure what to do. What we need is a bit of a story to sell the idea of destroying towers and explaining what it is the player needs to do in each level. To do this we will add a screen, much like the Score Screen at the start of each level:

1. We will need a button to start the level, which again will need to be drawn on screen. Create a new Script, scr_Menu_Button_Start, with some very familiar code:

   draw_sprite(spr_Button_Start, 0, startX, startY);
   if (win_Y > startY - start_ZoneHeight && win_Y < startY + start_ZoneHeight)
   {
       if (win_X > startX - start_ZoneWidth && win_X < startX + start_ZoneWidth)
       {
           draw_sprite(spr_Button_Start, 1, startX, startY);
           if (mouse_check_button_pressed(mb_left)) 
           {        
               isGameActive = true;
               instance_destroy();
           }
       }
   }

   All the standard button code is here, but when the button...