improved truster indicator, impulse engine sounds

2 files changed, 69 insertions, 17 deletions

diff --git a/src/audio/audio.cc b/src/audio/audio.cc
index 50d15c8..81a260c 100644
--- a/src/audio/audio.cc
+++ b/src/audio/audio.cc
@@ -81,19 +81,19 @@ void shutdown()
 	}	
 }
 
-void play(const char *name)
+size_t play(const char *name)
 {
 	if (!audio_context)
-		return;
+		return 0;
 
-	size_t buffer = Buffers::load(std::string(name));
+	size_t buffer_index = Buffers::load(std::string(name));
 
 	for (size_t i = 0; i < MAXUISOURCES; i++) {	
 		ALint srcstate = 0;
 		ALuint source = Sources::source(i);
 		alGetSourcei(source , AL_SOURCE_STATE , &srcstate);
 		if (srcstate != AL_PLAYING) {
-			Buffers::bind(source, buffer);
+			Buffers::bind(source, buffer_index);
  			alSourcef(source, AL_PITCH, 1.0);
     			alSourcef(source, AL_GAIN, 1.0);
 			alSourcei(source, AL_SOURCE_RELATIVE, AL_TRUE);
@@ -101,30 +101,49 @@ void play(const char *name)
 			alSourcefv(source, AL_POSITION, location);
 			alSourceRewind(source);
 			alSourcePlay(source);
-			return;
+			return buffer_index;
 		}
 	}
+
+	return 0;
 }
 
-void update_source(size_t source_index, math::Vector3f const & location, math::Vector3f const & velocity, float pitch, float gain)
+size_t play(size_t source_index, size_t buffer_index, float pitch, float gain) 
 {
-	if (!audio_context)
-		return;
+	if (!audio_context || !buffer_index)
+		return 0;
 
 	ALuint source = Sources::source(source_index);
-	alSourcefv(source, AL_POSITION, location.ptr());
-	//alSourcefv(source, AL_VELOCITY, velocity.ptr());
+	ALint srcstate = 0;
+	alGetSourcei(source , AL_SOURCE_STATE , &srcstate);
+	if (srcstate == AL_PLAYING) {
+		alSourceStop(source);
+	}
+	Buffers::bind(source, buffer_index);
+	alSourcei(source, AL_SOURCE_RELATIVE, AL_FALSE);
 	alSourcef(source, AL_PITCH, pitch);
     	alSourcef(source, AL_GAIN, gain);
+
+ 	alSourcei(source, AL_LOOPING,  AL_FALSE);
+	alSourceRewind(source);
+	alSourcePlay(source);
+
+	return buffer_index;
 }
 
-void loop( size_t source_index, const char *name, float pitch, float gain)
+size_t loop(size_t source_index, size_t buffer_index, float pitch, float gain)
 {
-	if (!audio_context)
-		return;
+	if (!audio_context || !buffer_index)
+		return 0;
 
 	ALuint source = Sources::source(source_index);
-	Buffers::bind(source, Buffers::load(std::string(name)));
+	ALint srcstate = 0;
+	alGetSourcei(source , AL_SOURCE_STATE , &srcstate);
+	if (srcstate == AL_PLAYING) {
+		alSourceStop(source);
+	}
+
+	Buffers::bind(source, buffer_index);
 
 	//alSourcef(source, AL_REFERENCE_DISTANCE, 2.0f); // might be the cause of cracks in the sound
 	alSourcei(source, AL_SOURCE_RELATIVE, AL_FALSE);
@@ -134,6 +153,20 @@ void loop( size_t source_index, const char *name, float pitch, float gain)
  	alSourcei(source, AL_LOOPING,  AL_TRUE);
 	alSourceRewind(source);
 	alSourcePlay(source);
+
+	return buffer_index;
+}
+
+size_t loop(size_t source_index, const char *name, float pitch, float gain)
+{
+	if (!audio_context)
+		return 0;
+
+	size_t buffer_index = Buffers::load(std::string(name));
+	if (buffer_index)
+		loop(source_index, buffer_index, pitch, gain);
+
+	return buffer_index;
 }
 
 void update_listener(math::Vector3f const &location, math::Axis const &axis, math::Vector3f const & velocity)
@@ -151,5 +184,18 @@ void update_listener(math::Vector3f const &location, math::Axis const &axis, mat
 	alListenerfv(AL_ORIENTATION, orientation);
 	//alListenerfv(AL_VELOCITY, velocity.ptr());
 }
+
+
+void update_source(size_t source_index, math::Vector3f const & location, math::Vector3f const & velocity, float pitch, float gain)
+{
+	if (!audio_context)
+		return;
+
+	ALuint source = Sources::source(source_index);
+	alSourcefv(source, AL_POSITION, location.ptr());
+	//alSourcefv(source, AL_VELOCITY, velocity.ptr());
+	alSourcef(source, AL_PITCH, pitch);
+    	alSourcef(source, AL_GAIN, gain);
+}
 	
 }
diff --git a/src/audio/audio.h b/src/audio/audio.h
index a3d4010..c0479d3 100644
--- a/src/audio/audio.h
+++ b/src/audio/audio.h
@@ -32,11 +32,17 @@ void shutdown();
 /// load an audio sample
 void load(const char *name);
 
-/// play a previously loaded audio sample
-void play(const char *name);
+/// play a previously loaded audio sample on the ui channel
+size_t play(const char *name);
+
+/// playe a sound from a specific buffer on a specific source
+size_t play(size_t source_index, size_t buffer_index, float pitch=1.0f, float gain=1.0f);
 
 /// play a looping sound on a specified source
-void loop( size_t source_index, const char *name, float pitch=1.0f, float gain=1.0f);
+size_t loop( size_t source_index, const char *name, float pitch=1.0f, float gain=1.0f);
+
+/// play a looping sound from a specified buffer on a specified source
+size_t loop(size_t source_index, size_t buffer_index, float pitch, float gain);
 
 /// update source parameters
 void update_source(size_t source_index, math::Vector3f const & location, math::Vector3f const & velocity, float pitch=1.0f, float gain=1.0f);