>>> Prompt:
In a game, given the below update function of a sprite walking on ground. The sprite should adjust
itself on the Y axis automatically (both up and down) as it is a bit hilly ground. Right now it just walks in a straight
line. Note that the ground underneath can be either dirt or rock.
I don't need explanation of the code, I need you to fix the code.
>>> Catch-up notes:
Backup was named: 'index - Copy (21).html'
Associated LLM context: n/a