Dev wrote on Oct 14, 2012, 04:29:
Well some of the "LOS" issues I think are confusion over how the game mechanics work. The "cover" thing really is just a reduction to the "to hit" percentages of a shot. It doesn't have much to do with LOS. Full cover gives a big bonus, half cover gives a smaller bonus. In original x-com, if you were around the corner, you were out of LOS. You had to step out to be in LOS.

In this one, if you are around a corner, you are still in LOS, but you have a defense bonus. When you fire, you lean out to shoot. You can both be around a different corner's of a hallway and still have LOS to shoot each other. If you hang back an extra space though, you will be out of LOS. So to truly hide behind a corner out of LOS, one needs to adjust thinking to be an extra space further behind corner. And of course anything thats only half cover, people can usually shoot you since it doesn't do anything for LOS blocking.