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Bots hear footsteps/cloaking player sounds #2022

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2 changes: 1 addition & 1 deletion src/game/server/neo/bot/behavior/neo_bot_seek_and_destroy.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ CSound* CNEOBotSeekAndDestroy::SearchGunfireSounds(CNEOBot* me, const Vector* cu
break;
}

if (!(pSound->SoundType() & SOUND_COMBAT))
if (!(pSound->SoundType() & (SOUND_COMBAT | SOUND_PLAYER)))

@sunzenshen sunzenshen Jul 26, 2026

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Looking for feedback on whether it makes sense to use the SOUND_PLAYER flag in this way, or if it's cleaner to treat footsteps as a SOUND_COMBAT

{
continue;
}
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5 changes: 5 additions & 0 deletions src/game/server/neo/neo_player.cpp
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Expand Up @@ -1303,6 +1303,9 @@ void CNEO_Player::PlayCloakSound(bool removeLocalPlayer)
// effect lasts 0.5 seconds, but allow 200-300ms leeway with GetFogObscuredRatio cache window
m_botThermOpticCamoDisruptedTimer.Start(0.2f);
}

// For bots to notice cloak sound
CSoundEnt::InsertSound(SOUND_COMBAT, GetAbsOrigin(), SOUNDENT_VOLUME_CLOAK, 0.5, this);
}

void CNEO_Player::SetCloakState(bool state)
Expand Down Expand Up @@ -3060,6 +3063,8 @@ void CNEO_Player::PlayStepSound( Vector &vecOrigin,
surfacedata_t *psurface, float fvol, bool force )
{
BaseClass::PlayStepSound(vecOrigin, psurface, fvol, force);
// For bots to hear footsteps
CSoundEnt::InsertSound(SOUND_PLAYER | SOUND_COMBAT, GetAbsOrigin(), SOUNDENT_VOLUME_FOOTSTEP, 0.1, this);
}

bool CNEO_Player::IsCarryingGhost(void) const
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34 changes: 34 additions & 0 deletions src/game/server/soundent.h
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Expand Up @@ -90,6 +90,40 @@ enum
#define SOUNDENT_VOLUME_PISTOL 1500.0
#define SOUNDENT_VOLUME_EMPTY 500.0 // volume of the "CLICK" when you have no bullets

#ifdef NEO
// Used for calibrating bot detection distances for CSoundEnt::InsertSound()

// Murata shotgun sound uses SNDLVL_150dB with volume 1.0 [weapon_murata.single in game_sounds_weapons.txt]
// Human player recipient list hearing distance calculation:
// maxAudible = (2 * SOUND_NORMAL_CLIP_DIST) / attenuation [recipientfilter.cpp]
// SOUND_NORMAL_CLIP_DIST = 10000.0f [public/const.h]
// attenuation = SNDLVL_TO_ATTN(150) = 20.0f / (150 - 50) = 0.2 [public/soundflags.h]
// maxAudible = (2 * 10000.0) / 0.2 = 100000 units
// Volume multiplier: 100000 * 1.0 = 100000 units
// SOUNDENT_VOLUME_SHOTGUN = 1500.0
// ratio = 100000 / 1500 = 66.666...u

// Cloak sound uses SNDLVL_75dB with volume 0.7 [NeoPlayer.ThermOpticOn/Off in game_sounds_player.txt]
// Human player recipient list hearing distance calculation:
// maxAudible = (2 * SOUND_NORMAL_CLIP_DIST) / attenuation [recipientfilter.cpp]
// SOUND_NORMAL_CLIP_DIST = 10000.0f [public/const.h]
// attenuation = SNDLVL_TO_ATTN(75) = 20.0f / (75 - 50) = 0.8 [public/soundflags.h]
// maxAudible = (2 * 10000.0) / 0.8 = 25000 units
// Volume multiplier: 25000 * 0.7 = 17500 units
// SOUNDENT_VOLUME_CLOAK = 17500 / 66.666... = 262.5 units
#define SOUNDENT_VOLUME_CLOAK 262 // round down in context of int volume param

// Footstep sounds use SNDLVL_75dB with volume 1.0 [Lowest of StepLeft/StepRight in game_sounds_physics.txt]
// Human player recipient list hearing distance calculation:
// maxAudible = (2 * SOUND_NORMAL_CLIP_DIST) / attenuation [recipientfilter.cpp]
// SOUND_NORMAL_CLIP_DIST = 10000.0f [public/const.h]
// attenuation = SNDLVL_TO_ATTN(75) = 20.0f / (75 - 50) = 0.8 [public/soundflags.h]
// maxAudible = (2 * 10000.0) / 0.8 = 25000 units
// Volume multiplier: 25000 * 1.0 = 25000 units
// SOUNDENT_VOLUME_FOOTSTEP = 25000 / 66.666... = 375.0 units
#define SOUNDENT_VOLUME_FOOTSTEP 375 // round down in context of int volume param
#endif

@sunzenshen sunzenshen Jul 26, 2026

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I wasn't sure what to input for CSoundEnt::InsertSound as the volume parameter, so I estimated a rough scale based on the existing shotgun volume used elsewhere.


enum
{
SOUND_PRIORITY_VERY_LOW = -2,
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