stealthbox misalignment on diagonal movement

[HMBGERDO]

Exploit Reports

• [X] I confirm this issue is not an exploit. (Required)

BYOND Version

no matter

Issue Description

if you run in stealthbox diagonally into a wall, you will move cardinal, but stealthbox will make both moves, slowly moving away from the center of your screen

What did you expect to happen?

it should always be in the middle

What happened instead?

^^^

Why is this bad/What are the consequences?

bugs bad

Steps to reproduce the issue.

activate stealthbox, go to a wall, press two movement buttons, enjoy your box walking away

When did the problem start happening?

no clue

Extra information

No response

Relevant log output/runtime error

No response