revert: bring shotgun ammo AoE again^2

[scarf005]

Purpose of change (The Why)

#4924 (comment)

#6028 and #5981 is resolved which means AoE shotshells can be reintroduced again

blocked by #6035

Describe the solution (The How)

reverts #6027

Describe alternatives you've considered

remove damage falloff and

• make AoE cone angle narrower
• nerfs damage and arpen

or

making shots blocked by targets? but this makes shotguns weaker on point-blank range which i don't like (will only hit 1 targets)

Testing

Additional context

BEHOLD MY UN-NERF INATOR

https://www.youtube.com/watch?v=mHtq-mlzY7s

Checklist

Mandatory

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax like closes #1234 in Summary of the PR so it can be closed automatically.
• I've committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

[chaosvolt]

That reminds me, at some point some accidental tweaks to the damage values slipped through that should not have, I'll do a separate PR in a bit to fix that.

[scarf005]

That reminds me, at some point some accidental tweaks to the damage values slipped through that should not have, I'll do a separate PR in a bit to fix that.

i guess we could merge the accidental tweaks here

[chaosvolt]

If you want I'll put up the suggestions for them in a sec then, sure.

EDIT: At least one of them is out of range to make a code suggestion actually so oops, I'll just PR it separately. XD

[RoyalFox2140]

Flechette and Buckshot should never be AoE, we can add new shell types for this but this is a regression on the playability of the game.

With damage falloff on AoE this is just a dramatic nerf to the actual usability of them as ammunition, we can add more shell types for this. A flat revert is a Hard No.

If all the shells except slugs are aoe then you just have 3 degrees of the same thing, you have high aoe at low damage and low arpen, medium aoe at medium damage and low arpen, and then low aoe at medium damage and medium arpen, I.E. Birdshot, 00 Shot, Flechette

So we could add #4 shot instead, and now we have Buckshot AoE behavior on a different shell without making everything the same.

AoE buckshot dramatically changes the primary single target attack option for guns with one of the most common ammo types

Buckshot is in it's own niche as a great ammo type for players without gun skill and with average perception, and now it's gone. Flechettes are their own niche for high armor penetration buckshot and now that's gone too.

[chaosvolt]

Just to be sure since we have at least one vital prereq PR whose balance is still undecided before this can be merged, I went ahead and converted back to draft for safekeeping.