SetViewport problem

[BorisZ]

I am experimenting with third and first person combination and I have encountered an problem with first perspective view: If I use SetViewport on large (x-axis only) background by x and y mouse coordinates,  room doesn't scroll to full width - it comes on about 2/3 (maybe less) of background, untill cursor comes to end of the screen. And what I would like is to scroll to full width, off course. I have tried with invisible character to scroll by too, but that was problematic because of flickering etc.
Any sugestions?

[Ashen feels lazy]

How are you making it scroll? If you're using something like:
  SetViewport (mouse.x, GetViewportY());
the problem is that mouse.x never gets above 320 (unless you're using 800 x 600), so that's the furthest right you can scroll.

Try something like:
in rep_ex of 1st person room
if (mouse.x <= 20) { //if mouse is near left of screen
  SetViewport (GetViewportX() - 10, GetViewportY()); // scroll left 10 pixels. Change this for quicker or slower scrolling.
}
else if (mouse.x >= 300) { //if mouse is near right of screen
  SetViewport (GetViewportX() + 10, GetViewportY()); // scroll right 10 pixels. Change this for quicker or slower scrolling.
}
If you're using 800x600 resolution, you'll need to change (mouse.x >= 300) to (mouse.x >= 380).

[BorisZ]

Thanks!