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Prevent AddMultiDamage execution with zero/negative damage #1103

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Prevent AddMultiDamage execution with zero/negative damage #1103

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5 changes: 5 additions & 0 deletions regamedll/dlls/weapons.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -107,6 +107,11 @@ void EXT_FUNC __API_HOOK(AddMultiDamage)(entvars_t *pevInflictor, CBaseEntity *p
if (!pEntity)
return;

#ifdef REGAMEDLL_FIXES
if (flDamage <= 0.0f) // avoid zero or negative damage TakeDamage
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@s1lentq s1lentq Sep 26, 2025

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This fix makes sense.
However, there is one detail I remember, some custom maps intentionally use negative damage values (e.g., env_laser with damage = -300) as a way to heal players.

The maps I recall include bhop_zerocheaters, deathrun_forest, deathrun_friends, but there are many more with different scenarios.

This is not a bug but rather a hidden feature that level designers sometimes rely on. With your change, such maps would stop working as intended, since TakeDamage would never be triggered.

So the fix could unintentionally break existing community content.
One possible approach could be to allow negative values (skip only flDamage == 0).

return;
#endif

gMultiDamage.type |= bitsDamageType;

if (pEntity != gMultiDamage.hEntity)
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