What is the value of gameMap? It seems to be a Texture, which means that your mapPosX should be a Quad, but that does not seem to be what you think you're getting.

The definition of gameMap is not visible anywhere, can you post that?

I like it! It's quite hard, too.

Also, where do these Ennui cards come from? They seem to randomly appear, although I think there's probably some kind of rule?

You need to store the actual movement direction. As soon as you move one step left, you are no longer at the right-most edge and unless you make the program remember that it was going in a specific direction, it will move right again (and appear to be stuck) if x >= window_width - rectangle_width th...

I asked the same question recently (viewtopic.php?f=4&t=82545&hilit=translation) and the answer seems to be "no".

That's what I mentioned in my last paragraph, but it's a lot more complex, which is why I suggested doing it the simpler way first

Yeah, the subject is just called "collision detection". That term should get you plenty of tutorials and examples :) The reason your player teleports to the same location every time is that you just set his x to be on the left side of the wall. In order to make the player stop when he hits...

Any chance you could stop the code in a debugger after the rectangle disappears to see if all the variables are still set properly?

You seem to have made a two-dimensional inventory, where each entry in the inventory can, itself, contain multiple items. I don't think that's intentional, and it's probably causing your issue. Your inventory starts out like this: { {}, {}, {}, {}, {} } -- 5 empty entries Then, when you add your fir...

You're going to have explain a bit more about what's going wrong... what exactly are you trying to do and which parts don't work?

The library has a validate function, which you pass a table and a pre-defined schema. You would have to change it to work better for validating functions, it's currently designed to validate whether tables are in the correct format. It works like this: -- define a schema to check against later valid...