Say I have a fixed stage size, and I have a game area that is bigger than the stage. (Is the stage the full size of the game? or is it the physical size that the flash file takes up?)
Anyway, I want to be able to zoom in and out of the game area, as well as scroll around, without changing the physical size that the flash window takes up.
Am I going to use:
or does that change the window size?
Also, is scrolling and scaling going to mess up the _x, _y coordinates of objects on the stage?
The stage size is the visible size of the game. Unless I'm mistaken, you cannot manipulate the _root as if it were an object... it represents the timeline. You will need to have your entire game contained inside a movieclip and control its scale for zooming effects. Scrolling and scaling will change the coordinates of the items relative to the _root stage, but not relative to the movieclip that contains them.