From ae65ef53fc8b70ebee3b43bb06ecd091aaae2a26 Mon Sep 17 00:00:00 2001
From: Stijn Buys <ingar@osirion.org>
Date: Thu, 17 Jul 2008 14:19:18 +0000
Subject: engine sounds
---
src/audio/audio.cc | 41 +++++++++++++++++++++++++++++++++++++++++
src/audio/audio.h | 13 +++++++++++++
src/audio/sources.cc | 26 ++++++++++++++++++++++++++
src/audio/sources.h | 4 ++++
4 files changed, 84 insertions(+)
(limited to 'src/audio')
diff --git a/src/audio/audio.cc b/src/audio/audio.cc
index 1895d21..ff0918d 100644
--- a/src/audio/audio.cc
+++ b/src/audio/audio.cc
@@ -91,4 +91,45 @@ void play(const char *name)
}
}
+void update_source(size_t source_index, math::Vector3f const & location, math::Vector3f const & velocity, float pitch, float gain)
+{
+ 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);
+}
+
+void loop( size_t source_index, const char *name, float pitch, float gain)
+{
+ if (!audio_context)
+ return;
+
+ ALuint source = Sources::source(source_index);
+ Buffers::bind(source, Buffers::load(std::string(name)));
+
+ alSourcef(source, AL_PITCH, pitch);
+ alSourcef(source, AL_GAIN, gain);
+
+ alSourcei(source, AL_LOOPING, AL_TRUE);
+ alSourceRewind(source);
+ alSourcePlay(source);
+}
+
+void update_listener(math::Vector3f const &location, math::Axis const &axis, float speed)
+{
+ alListenerfv(AL_POSITION, location.ptr());
+
+ math::Vector3f velocity(axis.forward());
+ velocity = velocity * speed;
+ //alListenerfv(AL_VELOCITY, velocity.ptr());
+
+ ALfloat orientation[6];
+ for (size_t i =0; i <3; i++) {
+ orientation[i] = axis.forward()[i];
+ orientation[i+3] = axis.up()[i];
+ }
+ alListenerfv(AL_ORIENTATION, orientation);
+}
+
}
diff --git a/src/audio/audio.h b/src/audio/audio.h
index bf97a4a..629ae88 100644
--- a/src/audio/audio.h
+++ b/src/audio/audio.h
@@ -7,6 +7,8 @@
#ifndef __INCLUDED_AUDIO_AUDIO_H__
#define __INCLUDED_AUDIO_AUDIO_H__
+#include <iostream>
+
#ifdef _WIN32
#include <windows.h>
#endif
@@ -14,6 +16,9 @@
#include "AL/al.h"
#include "AL/alc.h"
+#include "math/vector3f.h"
+#include "math/axis.h"
+
/// functions to handle audio
namespace audio
{
@@ -30,6 +35,14 @@ void load(const char *name);
/// play a previously loaded audio sample
void play(const char *name);
+/// 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);
+
+/// 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);
+
+/// update listener parameters
+void update_listener(math::Vector3f const &location, math::Axis const &axis, float speed);
}
#endif // __INCLUDED_AUDIO_AUDIO_H__
diff --git a/src/audio/sources.cc b/src/audio/sources.cc
index 2c67304..3a6b3fc 100644
--- a/src/audio/sources.cc
+++ b/src/audio/sources.cc
@@ -53,4 +53,30 @@ void Sources::clear()
}
+size_t Sources::get()
+{
+ for (size_t i= MAXUISOURCES; i < MAXSOURCES; i++) {
+ if (source_available[i]) {
+ source_available[i] = false;
+ alSourcef(sources[i], AL_PITCH, 1.0);
+ alSourcef(sources[i], AL_GAIN, 1.0);
+ //con_debug << "reserved source " << i << std::endl;
+ return i;
+ }
+ }
+ return 0;
+}
+
+void Sources::remove(size_t index)
+{
+ if ( (index < MAXUISOURCES ) || (MAXSOURCES <= index))
+ return;
+
+ source_available[index] = true;
+ alSourcef(sources[index], AL_GAIN, 0);
+ alSourceRewind(sources[index]);
+
+ //con_debug << "removed source " << index << std::endl;
+}
+
}
diff --git a/src/audio/sources.h b/src/audio/sources.h
index 302d5d5..078c424 100644
--- a/src/audio/sources.h
+++ b/src/audio/sources.h
@@ -27,6 +27,10 @@ public:
static inline bool available(size_t index) { return source_available[index]; }
static inline ALuint source(size_t index) { return sources[index]; }
+
+ static size_t get();
+ static void remove(size_t index);
+
private:
static void clear();
--
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