lovr.audio.getVelocity; lovr.audio.setVelocity;

src/audio/audio.c

@@ -31,8 +31,9 @@ void lovrAudioInit() {
   state.device = device;
   state.context = context;
   vec_init(&state.sources);
-  vec3_set(state.position, 0, 0, 0);
   quat_set(state.orientation, 0, 0, 0, -1);
+  vec3_set(state.position, 0, 0, 0);
+  vec3_set(state.velocity, 0, 0, 0);
 
   atexit(lovrAudioDestroy);
 }
@@ -82,6 +83,12 @@ void lovrAudioGetPosition(float* x, float* y, float* z) {
   *z = state.position[2];
 }
 
+void lovrAudioGetVelocity(float* x, float* y, float* z) {
+  *x = state.velocity[0];
+  *y = state.velocity[1];
+  *z = state.velocity[2];
+}
+
 float lovrAudioGetVolume() {
   float volume;
   alGetListenerf(AL_GAIN, &volume);
@@ -135,6 +142,11 @@ void lovrAudioSetPosition(float x, float y, float z) {
   alListener3f(AL_POSITION, x, y, z);
 }
 
+void lovrAudioSetVelocity(float x, float y, float z) {
+  vec3_set(state.velocity, x, y, z);
+  alListener3f(AL_VELOCITY, x, y, z);
+}
+
 void lovrAudioSetVolume(float volume) {
   alListenerf(AL_GAIN, volume);
 }

src/audio/audio.h

@@ -10,8 +10,9 @@ typedef struct {
   ALCdevice* device;
   ALCcontext* context;
   vec_void_t sources;
-  float position[3];
   float orientation[4];
+  float position[3];
+  float velocity[4];
 } AudioState;
 
 void lovrAudioInit();
@@ -20,6 +21,7 @@ void lovrAudioUpdate();
 void lovrAudioAdd(Source* source);
 void lovrAudioGetOrientation(float* angle, float* ax, float* ay, float* az);
 void lovrAudioGetPosition(float* x, float* y, float* z);
+void lovrAudioGetVelocity(float* x, float* y, float* z);
 float lovrAudioGetVolume();
 int lovrAudioHas(Source* source);
 void lovrAudioPause();
@@ -27,5 +29,6 @@ void lovrAudioResume();
 void lovrAudioRewind();
 void lovrAudioSetOrientation(float angle, float ax, float ay, float az);
 void lovrAudioSetPosition(float x, float y, float z);
+void lovrAudioSetVelocity(float x, float y, float z);
 void lovrAudioSetVolume(float volume);
 void lovrAudioStop();

src/lovr.c

@@ -133,8 +133,9 @@ void lovrInit(lua_State* L, int argc, char** argv) {
     "    if lovr.audio then "
     "      lovr.audio.update() "
     "      if lovr.headset and lovr.headset.isPresent() then "
-    "        lovr.audio.setPosition(lovr.headset.getPosition()) "
     "        lovr.audio.setOrientation(lovr.headset.getOrientation()) "
+    "        lovr.audio.setPosition(lovr.headset.getPosition()) "
+    "        lovr.audio.setVelocity(lovr.headset.getVelocity()) "
     "      end "
     "    end "
     "    if lovr.update then lovr.update(dt) end "

src/lovr/audio.c

@@ -9,6 +9,7 @@ const luaL_Reg lovrAudio[] = {
   { "update", l_lovrAudioUpdate },
   { "getOrientation", l_lovrAudioGetOrientation },
   { "getPosition", l_lovrAudioGetPosition },
+  { "getVelocity", l_lovrAudioGetVelocity },
   { "getVolume", l_lovrAudioGetVolume },
   { "newSource", l_lovrAudioNewSource },
   { "pause", l_lovrAudioPause },
@@ -16,6 +17,7 @@ const luaL_Reg lovrAudio[] = {
   { "rewind", l_lovrAudioRewind },
   { "setOrientation", l_lovrAudioSetOrientation },
   { "setPosition", l_lovrAudioSetPosition },
+  { "setVelocity", l_lovrAudioSetVelocity },
   { "setVolume", l_lovrAudioSetVolume },
   { "stop", l_lovrAudioStop },
   { NULL, NULL }
@@ -58,6 +60,15 @@ int l_lovrAudioGetPosition(lua_State* L) {
   return 3;
 }
 
+int l_lovrAudioGetVelocity(lua_State* L) {
+  float x, y, z;
+  lovrAudioGetVelocity(&x, &y, &z);
+  lua_pushnumber(L, x);
+  lua_pushnumber(L, y);
+  lua_pushnumber(L, z);
+  return 3;
+}
+
 int l_lovrAudioGetVolume(lua_State* L) {
   lua_pushnumber(L, lovrAudioGetVolume());
   return 1;
@@ -114,6 +125,14 @@ int l_lovrAudioSetPosition(lua_State* L) {
   return 0;
 }
 
+int l_lovrAudioSetVelocity(lua_State* L) {
+  float x = luaL_checknumber(L, 1);
+  float y = luaL_checknumber(L, 2);
+  float z = luaL_checknumber(L, 3);
+  lovrAudioSetVelocity(x, y, z);
+  return 0;
+}
+
 int l_lovrAudioSetVolume(lua_State* L) {
   float volume = luaL_checknumber(L, 1);
   lovrAudioSetVolume(volume);

src/lovr/audio.h

@@ -8,6 +8,7 @@ int l_lovrAudioInit(lua_State* L);
 int l_lovrAudioUpdate(lua_State* L);
 int l_lovrAudioGetOrientation(lua_State* L);
 int l_lovrAudioGetPosition(lua_State* L);
+int l_lovrAudioGetVelocity(lua_State* L);
 int l_lovrAudioGetVolume(lua_State* L);
 int l_lovrAudioNewSource(lua_State* L);
 int l_lovrAudioPause(lua_State* L);
@@ -15,5 +16,6 @@ int l_lovrAudioResume(lua_State* L);
 int l_lovrAudioRewind(lua_State* L);
 int l_lovrAudioSetOrientation(lua_State* L);
 int l_lovrAudioSetPosition(lua_State* L);
+int l_lovrAudioSetVelocity(lua_State* L);
 int l_lovrAudioSetVolume(lua_State* L);
 int l_lovrAudioStop(lua_State* L);