## About The Pull Request
Adds the ability for explosions to be directional. This is achieved by
adding an angle check to `prepare_explosion_turfs()` to drop any turfs
outside the cone of the explosion. If the arc covers a full 360 degrees,
as is the default, it will accept all the turfs without performing the
angle check.
Uses this functionality to rework both rocket launcher backblast and X4
explosions. Rocket launcher backblast has been changed from a shotgun of
indendiary bullets to a directional explosion of similar length. X4 now
uses a directional explosion to "ensure user safety".
Apparently the old method of moving the explosion one tile away didn't
even work, as it blew up `target` before trying to check its density for
the directional behaviour.
https://youtu.be/Mzdt7d7Le2Y
## Why It's Good For The Game
Directional explosions - Useful functionality for a range of potential
use cases, which can be implemented with minimal extra processing cost
(Worst case scenario being very large directional explosions)
Backblast - Looks way cooler than a bunch of projectiles, and should be
significantly more functional in high-lag situations where projectile
code tends to get fucky
X4 - More predictable for players wanting to use it as a breaching
charge, you can actually stand near the charge and not have to worry
about being hoist upon your own petard.
## Changelog
🆑
add: Added support for directional explosions.
add: Rocket launcher backblast is now 271% more explosive, check your
six for friendlies!
add: X4 charges now explode in a cone away from the user when placed on
a sufficiently solid object.
fix: X4 charges will now behave correctly when placed on dense atoms
(note: don't try to read a variable from an atom you just blew up)
/🆑
920f2c6442