Bots - Shoot through glass + penetrateables

[nullsystem]

Description

• Bots should now be able to shoot through glass if not using a shotgun
• If using a shotgun, try to change to a weapon that can utilize the glass if possible
• Change back to a shotgun if not behind glass?
• Tested/check if it doesn't straight up shoot through any penetrable like wallhack ability, non-glass penetrable only shoot through if it's recently seen enemy
• Enemy player that can shoot towards the ghoster behind penetrable should be able to try shooting at it
• Test/check for non-penetrable glass (tarmac non-penetrable vs oilstain penetrable)
• Slight scale between weapon penetration on when the bots will attempt to do penetration, so like SRS will do longer distance than SRM.
• Limited wallbang at ghoster ability to hard + expert bots

Toolchain

• Linux GCC Distro Native Gentoo/GCC 14

Linked Issues

• fixes Bots - Shoot through glass (when not using shotguns) #1282

[sunzenshen]

LGTM, bots now can shoot through glass when they couldn't do so before.

bot_penetratables_oilstain_glass.mp4

bot_penetratables_ballistrade_glass.mp4

[Rainyan]

TODO (LATER): Test/check for non-penetrable glass?

Tested against the tarmac non-penetrable glass, and indeed it seems the bots will fruitlessly empty their magazine against the bulletproof windows.

To repro:

neo_bot_quota 2;
map ntre_tarmac_ctg;

// Spawn to the garage side, so the bot spawns on the tarmac side.

// Then, teleport near the bulletproof window.
setang 7.062000 13.297527 0.000000;
setpos 477.418365 -252.499146 -210.468750;

But we can leave it for some future PR if you don't feel like it belongs here.

[nullsystem]

@Rainyan I've added in glass penetration vs non-penetration check, just does an extra trace then penetration check without distance limitation.

@sunzenshen I've added in distance restriction scaling by weapon's penetration, so for example: a bot using an SRS will attempt a further distance than MX which will attempt further than SRM. It is still short distance and does become shorter distance for weapons weaker than MX but it's intended to be kept limited.

[sunzenshen]

Bots no longer try to shoot through the impenetrable glass on Tarmac:

bot_penetratables_tarmac_bulletproof_fix.mp4

Bots appear to open fire on a player that is holding the ghost behind a paper wall near the house spawn on Isolation:

bot_penetratables_ghost_behind_cover_attack.mp4

[Rainyan]

Bots appear to open fire on a player that is holding the ghost behind a paper wall near the house spawn on Isolation

Maybe you meant this already as a positive, but this is probably the desired behaviour, since good players should absolutely wallbang the ghoster when they have the chance.

It'd be really cool if we had some kind of "confidence level" that the bots had on the enemy location, and if they felt confident enough (seen player recently in area, sound cues, etc), they could outright start wallbanging thin surfaces to do preemptive damage, like a real high-level human player would. But that's out of scope for this PR surely.

The classic situation is hearing someone cloak just around the corner/make steps, and preemptively start shooting at them before they appear visually. Although this should probably only happen for expert bots.

[Rainyan]

For the tarmac bulletproof glass case mentioned before, it seems that if you are holding the ghost, the bots will still attempt to wallbang.

If it's not too much work, could you make it such that even if the bots have vision of the ghoster (possibly through a bullet-proof window), if they know their bullets cannot penetrate (the wall thickness check), they won't waste bullets trying to shoot through the impenetrable areas, but instead consider it as impossible and choose whatever is their alternative action to shooting instantly.

Steps to reproduce:

neo_bot_quota 2;
map ntre_tarmac_ctg;

// Spawn to the garage side, so the bot spawns on the tarmac side.

// Then, drop your gun and noclip to go grab the ghost

// Then, teleport near the bulletproof window.

setang 7.062000 13.297527 0.000000;
setpos 477.418365 -252.499146 -210.468750;

What happens:

• The bots attempt to spam the ghost carrier through the bullet-proof glass

What should happen:

• The bots recognize they cannot penetrate, and choose something else

[nullsystem]

@Rainyan I've dropped the extra statement preventing penetration test flag from utilizing glass-only check if and that looks to have fixed the firing at ghoster behind non-penetrated glass issue. Also limited the ability to wallbang ghoster at hard + expert bots.

@sunzenshen Added CHAR_TEX_BLOCKBULLETS define and used Clamp function instead.

[sunzenshen]

Ghost behind ballistic glass now works as expected:

bot_penetratables_tarmac_bulletproof_ghost_fix.mp4

[Rainyan]

👍