Michael Chiaramonte goes on with his NES Programming tutorials.

NES Programming #47 - Adding collision to the asset tool
Watch this video on YouTube.

Quote:

In this stream, I added the ability to turn on a grid in the asset tool and toggle collision in metatiles by clicking on the individual 8x8 subtiles in the metatile. This information is saved in a 2-byte bit mask and on Monday we’ll be exporting the information for the NES and implementing the collision detection. As always, thanks to all those who watched the stream live! See you Monday -- have a great weekend!