I emailed them once asking about concerned joe.

Thanks for reaching out.
The game's design changed and it became Move or Die instead, so everyone who got the early access got whatever we had of concerned Joe back then, and a Move or Die steam key.

I didn't get a steam key.

I can download and run it fine, I don't get what it does. Looks pretty though.

I don't get it

This will only be true if x is exactly -10. Depending on how you're manipulating it, X might never be exactly -10. What you should do is something like this This checks if x is lower or equal to -10.

Is that the whole code? I don't see anything wrong with that.,

If you post your code we can help you better

There are ways to do what you describe. But you'd be better off just using a tile map editor like tiled. Tiled can export to .lua files so it's not hard to load them into your game. Plus there's a library called "sti" that can handle it for you.

If you post your code we can help you better.

You can get away with having a pretty large table as long as you don't iterate over the whole thing every frame.

I use a technique in this that only iterates over the part of the map that's visible to the camera.

Oh. I didn't realise that setBlendMode had a 2nd argument. You'd think if you need premultiplied alpha to use the multiply blend mode it would default to that.
Or the error would indicate that it needs a 2nd argument.