Fix Dragoon jumps

[gamesmart]

More than avoid exploits if this is intentional is because SE programmers don't want to do some effort programming a nice jump, just too much for them program a parable jump calculating the terrain.

There are so many things that could go wrong with a parabolic (that's the term, not parable, since English isn't your first language) curve to any of the jumps. Just look at the U'Ghamaro Mines - with an actual parabolic curve, you'd either only be able to jump to something 2 yalms in front of you, or you'd break out of the map every single time you tried.