From c2c1e8aac5e937cb55ebe33e1d937471002b0e76 Mon Sep 17 00:00:00 2001
From: bjorn <tie.372@gmail.com>
Date: Thu, 5 Jan 2017 21:36:38 -0800
Subject: [PATCH] Audio listener position and orientation;

---
 src/audio/audio.c | 24 ++++++++++++++++++++++++
 src/audio/audio.h |  4 ++++
 src/lovr/audio.c  | 44 ++++++++++++++++++++++++++++++++++++++++++++
 src/lovr/audio.h  |  4 ++++
 4 files changed, 76 insertions(+)

diff --git a/src/audio/audio.c b/src/audio/audio.c
index 3d51e370..972ae4c0 100644
--- a/src/audio/audio.c
+++ b/src/audio/audio.c
@@ -47,7 +47,31 @@ void lovrAudioUpdate() {
   }
 }
 
+void lovrAudioGetOrientation(float* fx, float* fy, float* fz, float* ux, float* uy, float* uz) {
+  float v[6];
+  alGetListenerfv(AL_ORIENTATION, v);
+  *fx = v[0];
+  *fy = v[1];
+  *fz = v[2];
+  *ux = v[3];
+  *uy = v[4];
+  *uz = v[5];
+}
+
+void lovrAudioGetPosition(float* x, float* y, float* z) {
+  alGetListener3f(AL_POSITION, x, y, z);
+}
+
 void lovrAudioPlay(Source* source) {
   lovrRetain(&source->ref);
   vec_push(&state.sources, source);
 }
+
+void lovrAudioSetOrientation(float fx, float fy, float fz, float ux, float uy, float uz) {
+  ALfloat orientation[6] = { fx, fy, fz, ux, uy, uz };
+  alListenerfv(AL_ORIENTATION, orientation);
+}
+
+void lovrAudioSetPosition(float x, float y, float z) {
+  alListener3f(AL_POSITION, x, y, z);
+}
diff --git a/src/audio/audio.h b/src/audio/audio.h
index 22660eb3..a2fe62d8 100644
--- a/src/audio/audio.h
+++ b/src/audio/audio.h
@@ -17,4 +17,8 @@ typedef struct {
 void lovrAudioInit();
 void lovrAudioDestroy();
 void lovrAudioUpdate();
+void lovrAudioGetOrientation(float* fx, float* fy, float* fz, float* ux, float* uy, float* uz);
+void lovrAudioGetPosition(float* x, float* y, float* z);
 void lovrAudioPlay(Source* source);
+void lovrAudioSetOrientation(float fx, float fy, float fz, float ux, float uy, float uz);
+void lovrAudioSetPosition(float x, float y, float z);
diff --git a/src/lovr/audio.c b/src/lovr/audio.c
index 64395c34..6ec7332a 100644
--- a/src/lovr/audio.c
+++ b/src/lovr/audio.c
@@ -7,7 +7,11 @@
 
 const luaL_Reg lovrAudio[] = {
   { "update", l_lovrAudioUpdate },
+  { "getOrientation", l_lovrAudioGetOrientation },
+  { "getPosition", l_lovrAudioGetPosition },
   { "newSource", l_lovrAudioNewSource },
+  { "setOrientation", l_lovrAudioSetOrientation },
+  { "setPosition", l_lovrAudioSetPosition },
   { NULL, NULL }
 };
 
@@ -29,6 +33,27 @@ int l_lovrAudioUpdate(lua_State* L) {
   return 0;
 }
 
+int l_lovrAudioGetOrientation(lua_State* L) {
+  float fx, fy, fz, ux, uy, uz;
+  lovrAudioGetOrientation(&fx, &fy, &fz, &ux, &uy, &uz);
+  lua_pushnumber(L, fx);
+  lua_pushnumber(L, fy);
+  lua_pushnumber(L, fz);
+  lua_pushnumber(L, ux);
+  lua_pushnumber(L, uy);
+  lua_pushnumber(L, uz);
+  return 6;
+}
+
+int l_lovrAudioGetPosition(lua_State* L) {
+  float x, y, z;
+  lovrAudioGetPosition(&x, &y, &z);
+  lua_pushnumber(L, x);
+  lua_pushnumber(L, y);
+  lua_pushnumber(L, z);
+  return 3;
+}
+
 int l_lovrAudioNewSource(lua_State* L) {
   const char* filename = luaL_checkstring(L, 1);
   if (!strstr(filename, ".ogg")) {
@@ -45,3 +70,22 @@ int l_lovrAudioNewSource(lua_State* L) {
   luax_pushtype(L, Source, lovrSourceCreate(sourceData));
   return 1;
 }
+
+int l_lovrAudioSetOrientation(lua_State* L) {
+  float fx = luaL_checknumber(L, 1);
+  float fy = luaL_checknumber(L, 2);
+  float fz = luaL_checknumber(L, 3);
+  float ux = luaL_checknumber(L, 4);
+  float uy = luaL_checknumber(L, 5);
+  float uz = luaL_checknumber(L, 6);
+  lovrAudioSetOrientation(fx, fy, fz, ux, uy, uz);
+  return 0;
+}
+
+int l_lovrAudioSetPosition(lua_State* L) {
+  float x = luaL_checknumber(L, 1);
+  float y = luaL_checknumber(L, 2);
+  float z = luaL_checknumber(L, 3);
+  lovrAudioSetPosition(x, y, z);
+  return 0;
+}
diff --git a/src/lovr/audio.h b/src/lovr/audio.h
index 3d7844f9..b69fc537 100644
--- a/src/lovr/audio.h
+++ b/src/lovr/audio.h
@@ -8,4 +8,8 @@ map_int_t TimeUnits;
 extern const luaL_Reg lovrAudio[];
 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_lovrAudioNewSource(lua_State* L);
+int l_lovrAudioSetOrientation(lua_State* L);
+int l_lovrAudioSetPosition(lua_State* L);