I thought I’d just pop this on here as I have a habit of loosing or forgetting about ideas over time. It’s a quick experiment to turn a single image of a game level (in this example DonkeyKong Country) into a usable tile map with support for tile flipping.
In there you will find maprecon.html which can load an image, and cut into a map of tiles.
There is also an example project to display this format. It’s using the TAS engine as a base, but with a custom line filler in place of the main background.
That 71fps is a little inaccurate as (for me) it runs slightly faster in the emulator. On hardware I get 61fps with the current code.