Automatic window alignment
As I just played the 5th campaign mission, I missed a feature that is implemented in OTTD: automatic window alignment.
First of all the window(Visible screen) borders are some base align points you can align a wondow with (eg Screens right side aligns with the left side of a window, only vertical alignment). But you can also align windows with other windows. When their edges are close, they also align horizontal/vertical.
As this makes it quite easy to align windows in a good looking way I think we also should implement this feature. Alignment strength is quite weak so custom, overlapping positioning should be still possible.
As I think the explanation is quite bad, I could either make a short video or one just downloads ottd and checks it for him/herself.
see #55