Doom3world

I noticed stock Doom has 4:3 limited set of resolutions, as if it doesn't do autodetection. Is there such function in the game to detect resolutions? Would it be possible to use it via script?

r_customWidth "x"
r_customHeight "x"
r_mode "-1"
r_aspectRatio "x" (Where X is 0 = 4:3, 1= 16:9, 2 = 16:10)

Yeah, but that's not what I am talking about. There are built in function in DarkPlaces (and many other engines) that pulls list of supported resolutions for the system the game is running on. That list can be used to display in the menu. So when user runs the game, he sees all available resolutions and aspect ratios (all that can be sorted and showing only 16:9 aspect resolutions when in fullscreen mode on 16:9 screen, for example). Is there anything like that in Doom 3 ?

Not sure, but I think Grimm added more resolutions to the menu.

No there is nothing like that in d3

Ouch. Does it have to be written as an engine component or can it be created in C++ game code (function to detect available resolutions)?

No. I am working on it though, the trick is to be able to exec a configuration, or a series of commands based on a string value.
D3 cannot 'enumerate' the available resolutions, but that easy to do in the SDK for a programmer, I can't 'program' in the SDK so I always opt for GUI/script solutions. With our current hardware and CPU strength I don't see any issues with scripting performance, as long as you use your head and time your stuff wisely.

The resolution stuff in the gui is set up like this:


#str_04222 is just a string in the strings file that reads "640x480;1024x768....etc..etc.."
When you click the choicedef it sets the cvar to whatever corresponding value you set in the 'values' option of the choicedef, in this case r_mode.
The issue there is that for alternative modes to work (any widescreen mode), you need to set r_mode to -1.

So without SDK work, I am thinking of a way I might fix this.
I am going to try to extend the values to the #str_04222 and not map it to r_mode at all.
Instead I'll map it to a local variable in the GUI, and use an event to catch changes to this variable.
Then depending on these changes I'll simply set three hidden c_var choicedefs that are bound to r_mode, r_customwidth and r_customheight. That ought to do it.

Have you seen how the render selection is handled in Endarchy? That was the best that I could come up with, with just guis.

There are two guis, the first is part of the main menu, the second is in-game. I highly suggest having a quick look at it.