- Offset: The offset from the actor's view to move the camera about.
- Flags: (Default is -1, which means don't change flags)
- VPSF_ABSOLUTEOFFSET: Don't include actor angles in calculation.
- VPSF_ABSOLUTEPOS: Position is absolute, and disables all transformations. Modders are responsible for being portal aware!
Notes:
- `ViewPos` in Actor will be `null` until A_SetViewPos is called for the first time.
**Issues:**
- Hiding sprite while in portal incomplete.
With fixed point math barely being used anywhere with the vast majority of calls in the software voxel drawer it makes sense to reduce the function interface to the minimum possible and move the shift value into the function call as an argument.