Centered Menus For My Stock Quake Engine

[Stroggos]

I been trying to figure this out for a few months now and I can't fathom it. How can you center the menus in a stock quake engine? I know its possible because it's in FitzQuake. But I can't seem to do it.

[mh]

Have a look in menu.c; here's the original M_DrawPic function as an example:

Code: Select all

void M_DrawPic (int x, int y, qpic_t *pic)
{
   Draw_Pic (x + ((vid.width - 320)>>1), y, pic);
}

Now, the "x + ((vid.width - 320)>>1)" part is used for centering the menu horizontally, so to center it vertically you would do something similar for the y coord, only use "y + ((vid.height - 240)>>1)" instead.

[Stroggos]

thanks mh!!!!!!

[Spike]

pos = screenalignmentpoint - imagealignmentpoint

top left in the top left, alignmentpoint is 0 in all cases, meaning pos = 0
align the top left of the image to the center of the screen and you want screencenter - 0. align the right of the image to the center of the screen and its screencenter - imagesize. align the bottom right of the image to the bottom right of the screen and its screensize-imagesize.
the center of the image or screen is the size in pixels divided by 2.
and if you're aligning the center of the image at the center of the screen then (swidth-iwidth)/2 is the same as swidth/2-iwidth/2, just a bit more optimised.

320 is used for the menu because the menu is logically drawn as a 320*200 or so wide image, aligned to the horizontal center and top of the screen. Any M_DrawPic offsets will use x and x+width between 0 and 320.
So to center the y value too, decide on your virtual menu 'image' height, and do (sheight-mheight)/2.
The minimum resolution quake generally allows is 200 high, not 240. if you use 240, your y offset could become negative and parts of your menu could go missing/offscreen.

[mh]

Spike is, of course, correct here.

[Spike]

and bored, too.

[Stroggos]

Okay, I have done all of that and the menus look great all central. Now the only problem is i can't align the "Player Setup Pic" in the multiplayer player setup menu. IF that makes ANY sense at all. If it doesn't i'll take a screenshot.

[mh]

Look for M_DrawTransPicTranslate in menu.c

[Stroggos]

Oh, Okay