im trying to make a basic top down shooter, but im new to programming with greenfoot. the parts im struggling with are projectiles, collision and enemy code(as mentioned in the title.) any help or suggestions will be appreciated. thanks.
A good starting point is the tutorial at the documentation page: click on "Documentation" above and then check out the tutorials.
Especially tutorial 3 (collision handling) and tutorial 5 (enemy code) should be interesting for you. If you encounter any unanswered question there, feel free to ask it here.
Live long and prosper,