How do I rotate an actor not on the center?

pinata14

hi gs,
so I have a turret, and i wanted to be able to rotate it around a point which is not it's center. This is because the turret has barrels that change the center, so it would rotate weird. I also tried making an invisible opposite barrel, but then you can hit the enemies when you are aiming behind it. Thanks for any help.
-Ryan

POM

Check this out :
http://forums.gamesalad.com/discussion/29037/free-yourselves-from-the-tyranny-of-center-only-rotations

Roy

pinata14

ok, but how would i make an exact formula if i wanted to have the turret rotate around "actor1" which moves around. the screen is set.

POM

EDIT:
See my comment below ..

Roy

pinata14

what are the scene attributes? if my screen is fixed I don't have to worry about them right? and what are the offsets if my point of rotation moves? (offset+game.point position X, offset+game. point position Y) (in other words can i make the offset off of variables?

POM

Hey there ...i see TSB has a video for this , i believe he explains it perfectly , it also has a demo file for download :
http://gshelper.com/?p=176

Roy

pinata14

sorry, but idgi... TSB only explains how to make it orbit, but I want the rotation to be based on the mouse position. Also, what would I change to make the box instead of rotate to face the center, rotate to face opposite the center?
Thanks for helping me out with this.

pinata14

Please can someone help with my specific situation?

RThurman

Here is a demo that might help with making off-axis rotations.
http://www.mediafire.com/download.php?nc9rawgb9y3yn5z

Hope this helps!
RThurman

pinata14

Thanks, now i just have to convert to a web size and I can update my game with graphicsx9999 better