Yes,
You need to add delta time to anywhere you use counters, acceleration, movement, friction. and more. You do NOT need delta time if you have a timer. For example, every 2 seconds you print "Hello World".
You need to add delta time to anywhere you use counters, acceleration, movement, friction. and more. You do NOT need delta time if you have a timer. For example, every 2 seconds you print "Hello World".