Recoil is incorrect [IV of Spades]

[iamgreaser]

Branch: 4 - IV of Spades

These cases modify the base recoil values:

• If the player is airborne, crouching is ignored in terms of recoil calculation (so no halving of the base value) and instead the recoil is doubled from the base value.
• If the player is pressing any of the 4 horizontal movement keys, and fires an unscoped shot, the recoil is doubled on top of that.

Furthermore, the base recoil values being used are guessed ones, rather than correct ones.

See commit 43b759f on master.

The recoil model itself is also incorrect (it rotates the camera, rather than moves the forward axis then normalises). I've filed this as yvt#1097 so you'll want to follow that. However, it's not as drastic as, well, having 1/8 of the recoil in certain situations.