The hardest part for me is to figure out what a bump is in terms of data structure, which only needed a few minutes for Chris to explain to me.
Then I just followed the instruction, and finished the program. At this point, it outputs very weird images, I didn’t know why, later with Chris’s help, I realized I needed
to cast the numbers written to file into ints. Then everything worked beautifully. My pox will have a different color scheme for every run, but somehow after adding a
lot of bumps, especially when stacked together, there are color mutations which made it looks very interesting.