"- The most obvious workaround is simply emulating 320x240 in 640x480 resolution with 200% zoom. This is not an optimal solution as it fucks up layer scrolling of layers with 0% scrollrates and allows for "subpixel" graphics on things rendered post-zoom (like particles)."
Unfortunately that's the best you're gonna get. I've been messing with this for a long time.
To work around the 0% scrollrate issue, you'll have to position your objects relative to scrollx, scrolly. If you're using Ashley's fullscreen w/ aspect ratio example, then they must be relative to the UI_Origin or
(scrollx+barL.width)+n
(scrolly+barT.width)+n
If you really don't care about blurriness on certain PCs or maintaining aspect ratio, you can try the built-in fullscreen or maybe the window object.
Yeah, I've read your posts in an older related topic that came up in a search. Construct is a total majesty in pretty much every other aspect so far, so it really is a pain to have to come up with workarounds for something as seemingly simple as screen modes.
To be honest, zooming will probably be my very last resort. I'm still pretty new to Construct, so all of these workarounds seem a little overwhelming, not to mention the "sub-pixel" thing being a bit of a turn-off.
If I want to use the built-in fullscreen, all I have to do is get the game to at least 640x480... but then again, that's the challenging part, isn't it? ;)
I just put up an example on how to do an easy to set up retro style fullscreen in the Tutorials forum.
http://www.scirra.com/forum/topic47220_post295684.html#295684
Hope it helps you out!
Thank you for the tutorial, though you may notice that this is the same solution that I considered in the second bullet point of my original post. :P
It does seem like the best method so far, even if it's a "fake" fullscreen. The "fake" part bothers me a little, as I'm afraid that graphics from external programs (like instant messengers) will pop through the game screen during gameplay as the windows 7 start icon sometimes does, ruining the effect altogether. The other concern is the distortion that happens on certain screens--I'll comment on your tutorial topic.
I may look into writing a plugin or something that does this for you without workarounds if I decide that it's worth it (and if I can figure it out!), though I'm a little reluctant to look at code since the reason I moved to Construct from building my own engine in the first place is because I was sick of programming. :P