If I were to guess, what seems to be happening if i were to guess is that the “get hit result under curser by channel” works properly as if it was a top-down, however when it is turned to a side-scroll i don’t get the result i need. I looked at the position of the mouse and when i click on a platform it shoots out from the character at approximately the direction it would go if the character was top-down, however as its from the side it shoots at the camera, rather then at the mouse.
Also it seems that the backdrop is causing issues as the positions of the background is way different then the platforms which causes the weird rotations when i click on the sky.
Also if i were to guess the “set Velocity in Local Space” is not correct.
For the items you asked for, when i set pitch to 90, i get the projectile firing off directly to the left, yaw to 90 it shoots directly at the horizon line, roll to 90 it shoots through the floor. I recorded a video at http://tempestintheaether.org/public_downloads/pyr-test.avi
Latest video with actor location printed in yellow, http://tempestintheaether.org/public_downloads/bandicam%202015-04-28%2021-19-33-313.avi