I want to create a web code editor. Or if there's anything good, please recommend it.

I'm trying to create a web code editor, but I don't know how to start, so I'm leaving a question. The period is set at 2 months, but I don't think it'll matter if it's delayed further. I'm planning to make a game like codecombat.com, but I've never touched the web,

I'm going to learn Unity to work on the game, and I'm going to use Python for the web. I'm going to use a pretty bootstrap template for the design.

Free version of codecombat.com.So codecombat.com has left out a lot of grammatical parts of learning languages, and I'm thinking about combining the grammatical parts of Code Academy with the game parts of codecombat.com.

The target is for adolescents, and as a result of testing codecombat and entries, such systems that achieve something and motivate them, such as codecombat, worked well.

Scratch is not interested in students, and the entry is too boring. There seems to be a lot of lack of content. Unity, web interworking, web design, and development can be done while reading books

The web code editor is the problem. For now, we will separate the game and the web. We will make it possible to purchase content that can smoothly solve the game with points accumulated while learning languages on the web. By the way, I want to create an editor like the code executor on this site when I proceed with the language on the web. We're going to do it ourselves. (Do I have to parse all the execution results myself? And Do you parse code to block system functions and file usage? Or do I just have to set up my account so that I can't do anything stupid? I've only tested a few of them on this site code-executor.)

Automatic tab function and syntax emphasis keywords by language (Should I register these keywords by myself?), but please recommend these editors if there is a good open source that can be used without making them yourself... I kept searching, but I don't know the exact English keyword, so I only see the results I don't want.

If I have an editor, I will keep the server, web, game, and db simple, so I don't think there will be any problem... I ask for your help me <