Use while loops rather than if statements, and colour output

[lucablackwell]

Hello all,
I found this repo earlier this morning, and have converted it to PHP on my local machine, as I'm more comfortable with it (though my roots are in python.) I love the idea behind it and it's nice to see other Mr. Robot fans with similar mindsets.
I would like to suggest using while loops to wait for the correct input from the user, as at the moment the functions 'progress' without telling the user, and doesn't stop progress.

As seen above, even if the user 'fails' to do the correct steps previously, they can still get on the boat and 'win'.

I'm more than willing to implement these changes, I can fork or commit directly (I may fork to upload my PHP version because why not), just let me know.

[lucablackwell]

Ah, I forgot to talk about colours - this is optional but I thought it'd be nice to add some colour to the output, like colouring the prompt or ascii art.

Again, just a thought, but I'd be happy to put in the work to do this.