bpp/example.bpp at master · kscheff/bpp · GitHub

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goto main

screen: { !include source "screen.bpp" }

main: {

      gosub screen.clear
      gosub screen.theme

ask:  print "how do you feel?":print
      print "1) i feel great!"
      print "2) nothing to complain about"
      print "3) not so well..."
      print "4) quit asking"
      print
      input a

      rem check the range...

      if a < 1 goto error
      if a > 4 goto error

      print

      rem give the answer...

      on a gosub answer.good, answer.neutral, answer.bad, done

      rem repeat...

      gosub delay
      goto main

error: print: print "please enter a number between 1 and 4!":
       gosub delay: gosub screen.clear
       goto ask

answer: {

       good:    print "well that's swell!": goto done

       neutral: print "ok, carry on then...": goto done

       bad:     on int(rnd(23)*3)+1 goto one, two, three

       one:   print "here, have a cookie!": goto done
       two:   print "dont' worry, be happy!": goto done
       three: print "cheer up!": goto done

       done: return

       }
}

done: print: print "see ya!": end

delay: { for i = 0 to 1024: next i: return }