Hi

I’m more then a biggner but i’m confused about a concept.

In 2d game, a sprite is running over a ground. i have a link for you.

https://www.youtube.com/watch?v=kiWZ74ivp48

Please help me which major concepts are use there to move/run a sprite/character  over a ground.

how to lenghty background is required at once, moving camera or moving ground ETC.