Use the up and down arrow keys on your keyboard to control your launch speed (what makes you go faster and higher). Use the left and right arrow keys to control the angle (what direction it points you to).
Yup, I made this with a book -_-. I can't coooooooooode '-' CREDDDDDDDDDIITTTTTTSS TO THE BOOK I USED ;-; This is literally the best game I made buuuut idc anymore