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