give_velocity is slightly off when anchored to the player

[CocytusDEDI]

When you use code like:

when_created:
anchor()

repeat:
give_velocity(0, 0, -1)

The player will be flung in the direction they're looking when the spell is cast, but it doesn't seem to be very exact, it might fling you a few degrees in the wrong direction, enough that it's noticeable.