The Daily Click

::. ::. ::.

Post Oekaki

Posted By	Message
vetmora120 Registered 07/01/2010 Points 273	13th September, 2013 at 13/09/2013 00:07:47 - I have an object that I would like to move from point A to point B in X time. What is the formula to move it by to ensure it always gets to point B in X time? The distance is 416 px and the time is 45000 "seconds". n/a
hapsi Registered 13/11/2003 Points 775	13th September, 2013 at 13/09/2013 12:11:50 - Set speed: distance divided by seconds. I know it's really not that simple.. you have to adjust either the seconds or the distance to get it right, but once you do, it'll work on any distance or speed. [Signature][/Signature]
Sketchy Cornwall UK Registered 06/11/2004 Points 1970	13th September, 2013 at 13/09/2013 15:04:30 - As I'm sure you know, Speed = Distance / Time You just need to get the time in frames rather than seconds: Speed = Distance / ( Seconds * FramesPerSecond ) So to actually move an object, you could say: + Whenever... -> Distance = Sqr((((Ax - Bx) pow 2) + ((Ay - By) pow 2)) -> Speed = Distance / (Seconds * FramesPerSecond) -> MoveX = ((Bx - Ax) / Distance) * Speed -> MoveY = ((By - Ay) / Distance) * Speed + Always -> Add MoveX to XPos -> Add MoveY to YPos -> Set X position to XPos -> Set Y position to YPos n/a
vetmora120 Registered 07/01/2010 Points 273	14th September, 2013 at 14/09/2013 06:27:14 - Thanks for your help, Sketchy. Can't seem to get that to work though. I have the below. I've checked all the formula a few times. Note that Second is a global value and isn't supposed to be Seconds. All the alterable values are returning -1.#IND at runtime. n/a
vetmora120 Registered 07/01/2010 Points 273	14th September, 2013 at 14/09/2013 06:37:35 - Hmm, I know the problem now is using relative X and Y coordinates so it's always at the same position within the window frame. Is there another way to do this? The context is a sun that moves upwards from the horizon from dawn to midday, if that helps. n/a
hapsi Registered 13/11/2003 Points 775	14th September, 2013 at 14/09/2013 12:00:43 - Zero point is top left. So just reduce the x and y. edit: okay, i see how dumb that sounds Edited by hapsi [Signature][/Signature]

Advertisement

Worth A Click