1 files changed, 63 insertions, 0 deletions
diff --git a/src/game/client/entity/sound_emitter.cc b/src/game/client/entity/sound_emitter.cc
new file mode 100644
index 0000000..57909ec
--- /dev/null
+++ b/src/game/client/entity/sound_emitter.cc
@@ -0,0 +1,63 @@
+#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 = glm::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;
+            }
+        }
+    }
+}