My idea is that for example, you are behind some sandbags, and maybe you want to jump to the other side.... What you have to do is just go around the sandbags, no? what about a system, similar to the one in Call of duty, where you can just get close to the obstacle and an advise will apear in the screen, saying that, if you press the jump button, you wil just jump to the other side, or climb the trenche in where you currently are.