way to avoid timers

is it possible to avoid timers by:
creating a real type game attribute called gamePrevTime
storing gametime into this attribute each frame
and doing calculations like pos.x = pos.x + scrollSpeed * (Game.Time - Game.gamePrevTime)
???
also, are the rules and change attributes that are inside actors run through each frame?
creating a real type game attribute called gamePrevTime
storing gametime into this attribute each frame
and doing calculations like pos.x = pos.x + scrollSpeed * (Game.Time - Game.gamePrevTime)
???
also, are the rules and change attributes that are inside actors run through each frame?
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