1. Is it good to start with HD 720p/1080p project? And how is that going to affect the performance of users with a lower resolution device?
2. How to detect/calculate the user's device aspect ratio? Example, I'm working on a 16:9 project. When my game is played on a tablet which can be 4:3, how can I know that by event sheet?
3. How do I spawn an object at the middle of the current window/camera location/xy?
Edit: [Okay, I worked out this one, but please I'd like to know how you'll do it.]
4. Settings rotations of objects takes some performance as says so in the performance tutorial. Is the turret behavior's rotation as intensive as manually setting rotation via action in the event sheet?