1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/prototype/src/audio/auman.cc	Mon Sep 17 08:40:59 2012 +0300
     1.3 @@ -0,0 +1,68 @@
     1.4 +#include <algorithm>
     1.5 +#include <new>
     1.6 +#include "auman.h"
     1.7 +
     1.8 +AudioManager::AudioManager()
     1.9 +{
    1.10 +	if(!(sources = kd_create(3))) {
    1.11 +		fprintf(stderr, "failed to create kd tree\n");
    1.12 +		throw std::bad_alloc();
    1.13 +	}
    1.14 +}
    1.15 +
    1.16 +AudioManager::~AudioManager()
    1.17 +{
    1.18 +	kd_free(sources);
    1.19 +}
    1.20 +
    1.21 +void AudioManager::clear()
    1.22 +{
    1.23 +	kd_clear(sources);
    1.24 +
    1.25 +	for(auto s : active_set) {
    1.26 +		s->stop();
    1.27 +	}
    1.28 +	active_set.clear();
    1.29 +}
    1.30 +
    1.31 +void AudioManager::add_source(AudioSource *s)
    1.32 +{
    1.33 +	Vector3 pos = s->get_position();
    1.34 +	if(kd_insert3f(sources, pos.x, pos.y, pos.z, s) == -1) {
    1.35 +		fprintf(stderr, "AudioManager: failed to add source!\n");
    1.36 +	}
    1.37 +}
    1.38 +
    1.39 +void AudioManager::active_range(const Vector3 &pos, float range)
    1.40 +{
    1.41 +	std::set<AudioSource*> newset;
    1.42 +
    1.43 +	// find all the sources in the given range and construct newset.
    1.44 +	struct kdres *results = kd_nearest_range3f(sources, pos.x, pos.y, pos.z, range);
    1.45 +	while(!kd_res_end(results)) {
    1.46 +		newset.insert((AudioSource*)kd_res_item_data(results));
    1.47 +		kd_res_next(results);
    1.48 +	}
    1.49 +	kd_res_free(results);
    1.50 +
    1.51 +	/* for each of the currently active sources, if they're not in the
    1.52 +	 * new set, stop the playback.
    1.53 +	 */
    1.54 +	for(auto s : active_set) {
    1.55 +		if(newset.find(s) == newset.end()) {
    1.56 +			s->stop();
    1.57 +		}
    1.58 +	}
    1.59 +
    1.60 +	/* for each of the new active sources not found in the currently active
    1.61 +	 * set, start the playback.
    1.62 +	 */
    1.63 +	for(auto s : newset) {
    1.64 +		if(active_set.find(s) == active_set.end()) {
    1.65 +			s->play();
    1.66 +		}
    1.67 +	}
    1.68 +
    1.69 +	// swap the current with the new, previous current will be destroyed at end of scope
    1.70 +	std::swap(active_set, newset);
    1.71 +}