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#include "client/pch.hh"
#include "client/entity/sound_emitter.hh"
#include "core/config/number.hh"
#include "core/math/constexpr.hh"
#include "shared/entity/transform.hh"
#include "shared/entity/velocity.hh"
#include "shared/world/dimension.hh"
#include "shared/coord.hh"
#include "client/entity/camera.hh"
#include "client/sound/sound.hh"
#include "client/globals.hh"
entity::SoundEmitter::SoundEmitter(void)
{
alGenSources(1, &source);
sound = nullptr;
}
entity::SoundEmitter::~SoundEmitter(void)
{
alSourceStop(source);
alDeleteSources(1, &source);
}
void entity::SoundEmitter::update(void)
{
if(globals::dimension) {
const auto view = globals::dimension->entities.view<entity::SoundEmitter>();
const auto& pivot = entity::camera::position_chunk;
const auto gain = math::clamp(sound::volume_effects.get_value() * 0.01f, 0.0f, 1.0f);
for(const auto [entity, emitter] : view.each()) {
alSourcef(emitter.source, AL_GAIN, gain);
if(const auto transform = globals::dimension->entities.try_get<entity::client::TransformIntr>(entity)) {
auto position = coord::to_relative(pivot, transform->chunk, transform->local);
alSource3f(emitter.source, AL_POSITION, position.x, position.y, position.z);
}
if(const auto velocity = globals::dimension->entities.try_get<entity::Velocity>(entity)) {
alSource3f(emitter.source, AL_VELOCITY, velocity->value.x, velocity->value.y, velocity->value.z);
}
ALint source_state;
alGetSourcei(emitter.source, AL_SOURCE_STATE, &source_state);
if(source_state == AL_STOPPED) {
alSourceRewind(emitter.source);
emitter.sound = nullptr;
}
}
}
}
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