15 — High score: a tiny project

Everything you know fits into one small project: a dice game that remembers its best score. use random rolls the die, use file saves the record.

#Steps

1. Create best.nme and save the whole game as one file:

   use random latest
   use file latest
   import os
   ask name What is your name?
   score = 0
   3 times:
       roll = random_number(1, 6)
       if roll >= 4:
           score add 1
       say f"{name} rolled {roll} (score {score})"
   if os.path.exists("best.json"):
       best = json_load("best.json")
       say f"Last best was {best['score']}"
   else:
       best = {"name": "nobody", "score": 0}
   if score > best["score"]:
       json_save("best.json", {"name": name, "score": score})
       say f"New best: {score}"
   else:
       say f"Best stays {best['score']}"
   

   copyrun it →

   Three rounds roll a die; each roll of 4 or more adds 1 to the score. The if lines read a saved best and save a new best when the score beats it.

2. Run it and type a name. One run might print:

   nme run best
   

   copy

   What is your name? Mina rolled 6 (score 1)
   Mina rolled 6 (score 2)
   Mina rolled 5 (score 3)
   New best: 3
   

   copy

   Your rolls and score will differ — the dice are random. The first run has no saved best, so the score always becomes the new best.

3. Run it again: the previous best comes back from the file before the game starts, and best.json holds {"name": "Mina", "score": 3}. Beating it saves a new best; otherwise the old one stays.

4. Korean writes the same project with 랜덤 사용 최신, 파일 사용 최신, 점수에 1 더해, and json저장. The full Korean program is in the Korean guide; this snippet loads a saved best:

   파일 사용 최신
   최고 = json읽기("best.json")
   말해 f"저장된 최고 점수: {최고['score']}점"
   

   copyrun it →

#Try it yourself

Make the game harder: change 3 times: to 4 times: for a longer game, or change roll >= 4 to roll >= 5 for a stricter score.

#What you learned

• One project can combine use random, use file, ask, 3 times:, if, and JSON in a single file.
• os.path.exists(path) checks whether a saved file is there yet.
• json_load restores the previous best; json_save writes a new one.
• score add 1 / 점수에 1 더해 grows the score only inside the condition block.