void SoundScriptManager::modulate(int actor_id, int mod, float value, int linkType, int linkItemID)
{
if (disabled)
return;
if (mod >= SS_MAX_MOD)
return;
for (int i = 0; i < free_gains[mod]; i++)
{
SoundScriptInstance* inst = gains[mod + i * SS_MAX_MOD];
if (inst && inst->actor_id == actor_id && inst->sound_link_type == linkType && inst->sound_link_item_id == linkItemID)
{
// this one requires modulation
float gain = value * value * inst->templ->gain_square + value * inst->templ->gain_multiplier + inst->templ->gain_offset;
gain = std::max(0.0f, gain);
gain = std::min(gain, 1.0f);
inst->setGain(gain);
}
}
for (int i = 0; i < free_pitches[mod]; i++)
{
SoundScriptInstance* inst = pitches[mod + i * SS_MAX_MOD];
if (inst && inst->actor_id == actor_id && inst->sound_link_type == linkType && inst->sound_link_item_id == linkItemID)
{
// this one requires modulation
float pitch = value * value * inst->templ->pitch_square + value * inst->templ->pitch_multiplier + inst->templ->pitch_offset;
pitch = std::max(0.0f, pitch);
inst->setPitch(pitch);
}
}
}
