JSRobots Programming Game

TLDR: link (In mobile the interface is awful, but it’s your life)

I was at my company gathering the other day and I ended up chatting with a colleague, let’s call him Alberto, who has a young son. We were discussing that he would like to get his son interested in programming, and since I’ve also developed the passion for programming and computer science at a quite young age, he was asking for advice.

So I was trying to remember how I got interested in programming, and I have no answer for this, I guess it was a combination of my father introducing to it and me discovering the power to control this mistical thing that was the computer at the time, not obiquitous like they are now, with smartphones, smart devices and so on. But still, I think the my interest was very much related to the fact that programming gives you very powerful building tools to unleash your imagination. It’s like Lego, but you don’t have to ask your parents to buy you the new set to have more pieces, all the pieces are already there, you just have to discover them. In fact, this is the hard part: discover the tools and how to use them is the key. This can be a tedious and long process, and it’s difficult to focus for this much time especially at young age, you really just want to “play”.

But sometimes you find some ways to bridge the gap and that lets you have some quick results. After having a way to easily see how you can affect a digital world, here’s where you understand if you like programming or not. And I loved it.

So, back to me at a young age, I remember at some point, probably around 13 years old or so, already admittingly quite deep into the computer science world (I had already some little programming projects ongoing) I discovered a programming game called JRobots. It was inspired (actually more than that, almost only a Java port of that) by a much older game called CRobots (written in C). It’s a simple game in which you can program your bot to fight against others in an arena, defining its behaviour by coding its “brain”, which takes decisions on how to act at every time step.

But the JRobots game still had a lot of overhead to get started, install and setup the JVM, download the source, make it run correctly, download other people’s bots and make them run along with the rest. I was lucky to have the knowledge to do it, and spent some months playing with this game, learning trigonometry and implementing new ideas (algorithms) like no school teacher could have done, in a very funny way.

So, here you have JSRobots, a JS rewrite of the thing. As in JRobots, in this programming game you have to write some code to control the behaviour of your “robot”, which is then placed in an arena to combat with another bot (possibly written by someone else). I think this is a nice way to get closer to programming because with very few lines of code you can see the differences of behaviour of your robot, and you can iteratively make it better and see its improvements and fails. Behing written in JS and running entirely in the browser, this is a zero overhead way to start writing some code. You start with the given example, you try to change it, press one button and the code is executing, showing your impact in this digital world.

Current state of the project is it’s a proof of concept, and can be improved in many ways. Has no server side logic, I could add some to be able to submit your bot for others to play against, but I have to take into account some security concerns before implementing that. For the rest, It’s missing some debug options for sure, but it’s usable.

The rules and documentation for the game are provided on the website itself (thanks to chatGPT again, if it’s not clear enough complain to openAI) and if you wish to send me your bot to be added to the list of opponents please do. You can find one of my emails somewhere in this blog or in the internet or at nicassio.it/daniele

The code is also on github

Party Guestbook

Now in Barcelona, home parties are back again! So, following other projects I did for party guest entertainment, this time I decided to develop a digital Guestbook for people to use.. it was nice!

Also, this time I asked chatGPT to help me, and in 4 to 5 prompts I had it all done – with some tweaks afterwards. The way I interacted with chatGPT to produce some working code was nice, a first for me, but I would say very convenient. I had exactly in mind what I wanted, just didn’t know how to do it in detail without searching the internet. So here are a screenshot of the result and the prompts I used to build this:

ChatGPT prompts, with ChatGPT commenting on them:

[AI written content starts here]

Prompt 1: Node.js Express Server with Queue Endpoints

Prompt: Write a node.js Express server with two endpoints: a POST /add that adds a text to a queue, and a GET /queue that returns a JSON with the queue and empties it.

Description: This prompt asks for the creation of a Node.js Express server with two endpoints. The first endpoint (POST /add) should handle a POST request to add text to a queue. The second endpoint (GET /queue) should handle a GET request to retrieve the queue and empty it. The goal is to implement a basic queuing system using the provided endpoints.

Prompt 2: Serving Static Files in Express

Prompt: Modify the code so that every request to files in the public/ folder is served as normal files.

Description: This prompt involves modifying the Node.js Express server code to serve static files from a public/ directory. The goal is to ensure that any requests for files within the public/ folder are served as normal files, allowing them to be accessed by clients. This modification will enable the server to serve static content such as HTML, CSS, JavaScript files, images, and other assets stored in the public/ folder.

Prompt 3: HTML Page for POST Submission

Prompt: Write an HTML page to submit a POST with a JSON payload populated with a text taken from a textarea as an input.

Description: In this prompt, the task is to create an HTML page that includes a form with a textarea input. The user will enter some text into the textarea, and upon submission, a POST request with a JSON payload should be sent to the server. The JSON payload should contain the text entered in the textarea. The purpose of this HTML page is to allow users to submit text to the server for further processing or storage.

Prompt 4: Displaying Queue Data Dynamically

Prompt: Write an HTML page that reads data from the queue with an async call every 10 seconds. Display the pieces of text that it reads from the queue in a random font, color, and size, and place them in a random position on the page.

Description: This prompt involves building an HTML page that fetches data from the server’s /queue endpoint every 10 seconds using an asynchronous call. The retrieved data represents a queue, and the goal is to dynamically display the text from the queue on the page. The displayed text should be styled randomly with fonts, colors, and sizes. Additionally, the text should be positioned randomly on the page, creating a visually dynamic and engaging display.

Prompt 5: Generating QR Code SVG for URL

Prompt: Write the HTML code for an SVG image representing a QR code for the URL https://giada.0bl.eu:3000/add.html.

Description: In this prompt, the task is to write the HTML code for an SVG image that represents a QR code for a specific URL. The provided URL is https://giada.0bl.eu:3000/add.html. The generated SVG image should be suitable for displaying a scannable QR code that, when scanned, will direct the user to the provided URL. The QR code is a widely used method for encoding and decoding information, often used for quickly accessing URLs or other data through mobile devices.

[AI written content ends here]

So, thanks to ChatGPT for helping me code this project, but also for helping me write this too long and inflated blog post. I guess you can paste all this into chatGPT and ask it to make a summary of it, in a net-zero information process that earns some money to openAI 🙂