night/day

[Hammerite]

wen some1 is doing night and day in their game, do they use different bgs for night time and daytime?

[DoorKnobHandle]

You can either use different backgrounds or use the screen tint functions. But usually you really should use different backgrounds, because then you have more control over how things will look. Example: A room with lights off at day and then when it's night, you wouldn't want to simply tint the room all darkbluish, but maybe turn on that light and thus have different shadows...

[Hammerite]

Would I have to make new rooms for day and night or what?

[DoorKnobHandle]

Either make new rooms or use the "SetBackgroundFrame" function to set the background image accordingly whenever the player enters that certain room.

For closer information, please refer to the manual!

[Gilbert]

You may also check this.