Shoot with little red balls with space and drag the tank around with your mouse. You can change the velocity of the balls by dragging your mouse closer and farther away from the tank while shooting.
I made this with a griffpatch tutorial on youtube so here is the link if you want to try it. https://www.youtube.com/watch?v=Ge1DbXkyMKo&list=PLy4zsTUHwGJKByTn_qV76oTpEYGczqEb_&index=7
