Your in-game
viewpoint is on a slight angle (you're not looking exactly straight down) and it's important to take this into account
when aiming up or down hill. Say I want to place a hub
where I've drawn that X.
The purple line is how I'm going to aim to make that shot.
Here's the resulting shot. Notice how the cord
between the two hubs shifts upwards in your view as it
goes uphill? That's because your viewpoint is
tilted slightly so things at higher altitudes appear higher up on your
screen.
In
tight situations aiming up or down hill properly can be
critical. That purple line shows how I aimed to land that
energy collector where it is. If I had aimed a bit
below the purple line then that energy collector would
have flown straight into the side of that cliff and blown
up, wasting valuable
energy. And if I had aimed a bit higher (to play it safe) I
wouldn't have left much room for another energy collector to
fit on that energy pool.
Shots fired directly north or directly south appear to
travel in straight lines, and so the more towards the north or
south you're aiming the less you need to compensate for the tilt
of your view. Also, each of those anti-airs were
launched with the same minimal power. The hub may look
to be closer to the northern-most anti-air than it is to the southern-most
anti-air, but that's only because the hub is at a higher
altitude than the anti-airs, and things at higher altitudes appear
higher up on your
screen. You need to remember that when deciding how
much power to use as well as when you're lining up your shot.
In order to get good at
launching up and down hills you really need to practice. I
haven't touched much on power levels here because that's
something you have to get a feel for when actually playing the
game.