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Question by galealuke · Oct 29, 2014 at 06:40 PM · cameraresolutionscreen

Handling different resolutions?

Hi guys, so I just made a simple top-down shooter to get used to unity. I found the co ordinates where the camera ends, and spawned monsters from there, and had a life bar on the top left..etc

Now when I play it on android suddenly I see a whole mess because the view is not the same from pc resolution to the phone resolution (duh).

So is there a way that I can reference directly the camera co-ordinates and instantiate according to where the edges of the camera are? I assume this is how one would handle different screen resolutions...

Thanks, Luke

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felixmann

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avatar image tanoshimi · Oct 29, 2014 at 07:03 PM 0
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Welcome to the world of Android development: one platform, millions of different device configurations :)

Generally speaking, it's not resolution that presents the problem: a game running on a 320x240 screen and one running on a 640x480 screen should show the same extents - Unity does that for you automatically. But the problem is when aspect ratio changes: what do you show on a screen that is, say, 640x600? What to do with the 120 pixels or extra "height"?

There's no universal way to handle different screen sizes: scaling, letterboxing, zooming are all options. In your question, you want to know the worldspace coordinates of the four corners of the visible camera viewport - is that right?

avatar image galealuke · Oct 29, 2014 at 11:02 PM 0
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Yes pretty much. I guess now it zooms in when it finds a different aspect ratio, which is not desirable as some stuff is left out of the screen. Apparently it seems harder than I thought so I'm gonna have to do some research about this..thanks :)

avatar image galealuke · Oct 30, 2014 at 07:05 PM 0
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So now the weirdest thing is happening to me. I used width and height to and then converted it using ScreenToWorldPoint. For some reason when I instantiate moving objects it works fine, but still objects do not show on the screen, even though they are instantiated in the object hierarchy. Then if I log the position generated by ScreenToWorldPoint, and instantiate them on that position they show. Has this ever happened before?

Thanks

avatar image MrSoad · Oct 30, 2014 at 08:48 PM 0
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Are you doing anything with scale anywhere, if anything that relates to the placing procedure is not at a scale of (1,1,1) you can get odd behavior...?

avatar image galealuke · Oct 31, 2014 at 09:56 AM 0
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well I change the scale in a lot of the objects, I didn't know that's bad..although now I changed the object I'm trying to instantiate to 1,1,1 and it's still not showing.

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Answer by CasvanMarcel · Dec 19, 2014 at 11:54 PM

I posted a response here to solve this horrible problem http://gamedev.stackexchange.com/questions/79546/how-do-you-handle-aspect-ratio-differences-with-unity-2d/89973#89973

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Answer by MrSoad · Oct 29, 2014 at 07:03 PM

You can do something like this :

 private var fScreen_Width : float;
 private var fScreen_Height : float;
 
 fScreen_Width = Screen.width;
 fScreen_Height = Screen.height;

which will give you your current screen dimensions. You can then use this info to adjust whatever you need to.

Edit: You can than do what tanoshimi says and calculate the ratio from these values and use that as your base for adjustments.

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avatar image galealuke · Oct 29, 2014 at 11:04 PM 0
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Thanks, I'll try to figure out how to work with these :)

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