Friendlier examples and API

[Ivanca]

I have more than 20 years as programmer and something that tripped me off a little was that the examples at https://killedbyapixel.github.io/LittleJS/examples/ cannot be just copy pasted, the examples with images is reasonable that need to be downloaded first but otherwise should work fine, meaning the engineInit call should be included the code

The tile system is a also quite confusing, to let beginners get started the tile constructor should allow strings with the location of the image file, maybe show a warning in the console saying this is not the best approach but allow it nonetheless, I mean like this:

tile('flappy_duck.png')

[KilledByAPixel]

Thanks for feedback! I considered doing that for the short examples but after adding so many examples (and I want to have over twice this many) it made a lot more sense to only include the functions that differ from an empty example. Otherwise it's just a lot of empty functions repeated in every single example. Also these are like code snippets that are meant to be copy and pasted in to larger programs.

Would it help if there was a button in the example browser to download the example as a full html file with all the missing functions included?

I'll have to think on the tile system. It could in theory work that way, but that also could cause more confusion down the line because that is not a very good way to do things.

We could really use a tutorial that is focused on adding art to a game using the tile system. Hopefully there are enough short examples to help for now. The sprite atlas example shows it pretty well I think.