hello. cool tutorial. for some reason it's not letting me drag any kind of image into the source image input form. any idea why that may be? It sats 'None (sprite)". i also tried w/ your map image and did not have luck. thanks
Apologize for the late reply. The image must be set to "sprite 2D/UI" otherwise it won't work. Click the image in the project panel and change it from "texture" to "sprite" and it should work then.
