Forward Vector for character

[ktimam]

What is the best way to get the forward vector for Character?

[SirLynix]

Take its quaternion rotation and multiply it by your forward.
For example:

JPH::Vec3 charForward = character.GetRotation() * JPH::Vec3(0, 0, -1); // assuming Y up and right-handed, (0,0,1) for left-handed

[eliasdaler]

(0, 0, 1) can still be "forward" in right-handed coordinate systems if your X axis points to the left - that’s the glTF coordinate system. :)

[jrouwe]

Note that there's a slightly more efficient version: -character.GetRotation().RotateAxisZ()