objective c - iOS game-world calendar/clock -

objective c - iOS game-world calendar/clock -

i'm working on ios game needs have in-game "calendar" , day/night cycle. envision finish "24 hours" take maybe 15 minutes real-world time (for example). previously, i've used int counter time of day.

how can efficiently track game-world calendar?

i figure @ to the lowest degree utilize time of day counter, , every time resets, can increment day counter, , every 7 days can increment week, , on.

or might worth using epoch-like scheme , converting readable format.

if want 24 false hours take 15 real minutes, can convert nstimeintervals so:

nstimeinterval real = [[nsdate date] timeintervalsince1970]; nstimeinterval false = real * 96.0; // there 96 false minutes each real minute.

you record game world's start time nsuserdefaults , utilize offset in [[nsdate date] timeintervalsincedate:date] instead, if choose.

ios objective-c