nuclear@47: #include <stdio.h>
nuclear@47: #include "openal.h"
nuclear@47: #include "audio.h"
nuclear@47: 
nuclear@47: static ALCdevice *dev;
nuclear@47: static ALCcontext *ctx;
nuclear@47: 
nuclear@47: 
nuclear@47: bool init_audio()
nuclear@47: {
nuclear@47: 	if(dev) {
nuclear@47: 		return true;
nuclear@47: 	}
nuclear@47: 
nuclear@47: 	if(!(dev = alcOpenDevice(0))) {
nuclear@47: 		fprintf(stderr, "failed to open OpenAL device\n");
nuclear@47: 		return false;
nuclear@47: 	}
nuclear@47: 	ctx = alcCreateContext(dev, 0);
nuclear@47: 	alcMakeContextCurrent(ctx);
nuclear@47: 
nuclear@47: 	alGetError();	// clear error code
nuclear@47: 	return true;
nuclear@47: }
nuclear@47: 
nuclear@47: void destroy_audio()
nuclear@47: {
nuclear@47: 	alcMakeContextCurrent(0);
nuclear@47: 	if(ctx) {
nuclear@47: 		alcDestroyContext(ctx);
nuclear@47: 	}
nuclear@47: 	if(dev) {
nuclear@47: 		alcCloseDevice(dev);
nuclear@47: 	}
nuclear@47: }
nuclear@50: 
nuclear@50: void set_audio_listener(const Matrix4x4 &xform)
nuclear@50: {
nuclear@50: 	float pos[3], orient[6];
nuclear@50: 
nuclear@50: 	pos[0] = xform[0][3];
nuclear@50: 	pos[1] = xform[1][3];
nuclear@50: 	pos[2] = xform[2][3];
nuclear@50: 
nuclear@50: 	orient[0] = xform[0][2];
nuclear@50: 	orient[1] = xform[1][2];
nuclear@51: 	orient[2] = -xform[2][2];
nuclear@50: 
nuclear@50: 	orient[3] = xform[0][1];
nuclear@50: 	orient[4] = xform[1][1];
nuclear@50: 	orient[5] = xform[2][1];
nuclear@50: 
nuclear@50: 	alListenerfv(AL_POSITION, pos);
nuclear@50: 	alListenerfv(AL_ORIENTATION, orient);
nuclear@50: }