Not able to push changes in Richie week 4 branch

[yash-6795]

guys I add some new functionality in NPC class and made some changes in GameObject class(i.e. change in identifiers) but i didn't find a way to commit changes in existing branch.
All I could do was, I created a new Repository with this url ->
"https://github.com/yash-6795/3D5B-Working_Branch_Richie_Week_4)" .
Please have a look in modified files and we will discus it in the next meeting.