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nuclear@48
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1 #include <algorithm>
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nuclear@48
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2 #include <new>
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nuclear@48
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3 #include "auman.h"
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4
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5 AudioManager::AudioManager()
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6 {
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7 if(!(sources = kd_create(3))) {
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8 fprintf(stderr, "failed to create kd tree\n");
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9 throw std::bad_alloc();
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10 }
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nuclear@51
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11 kd_data_destructor(sources, [](void *s) { delete (AudioSource*)s; });
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12 }
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13
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14 AudioManager::~AudioManager()
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15 {
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16 kd_free(sources);
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17 }
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18
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19 void AudioManager::clear()
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20 {
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21 for(auto s : active_set) {
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22 s->stop();
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23 }
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24 active_set.clear();
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25
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26 kd_clear(sources);
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27 }
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28
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29 void AudioManager::add_source(AudioSource *s)
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30 {
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31 Vector3 pos = s->get_position();
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32 if(kd_insert3f(sources, pos.x, pos.y, pos.z, s) == -1) {
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33 fprintf(stderr, "AudioManager: failed to add source!\n");
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34 }
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35 }
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36
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37 void AudioManager::active_range(const Vector3 &pos, float range)
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38 {
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39 std::set<AudioSource*> newset;
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40
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nuclear@48
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41 // find all the sources in the given range and construct newset.
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42 struct kdres *results = kd_nearest_range3f(sources, pos.x, pos.y, pos.z, range);
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43 while(!kd_res_end(results)) {
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44 newset.insert((AudioSource*)kd_res_item_data(results));
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45 kd_res_next(results);
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46 }
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47 kd_res_free(results);
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48
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49 /* for each of the currently active sources, if they're not in the
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50 * new set, stop the playback.
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51 */
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52 for(auto s : active_set) {
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53 if(newset.find(s) == newset.end()) {
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54 s->stop();
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55 }
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56 }
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57
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58 /* for each of the new active sources not found in the currently active
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59 * set, start the playback.
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60 */
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61 for(auto s : newset) {
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62 if(active_set.find(s) == active_set.end()) {
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63 s->play();
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64 }
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65 }
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66
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67 // swap the current with the new, previous current will be destroyed at end of scope
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68 std::swap(active_set, newset);
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69 }
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