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sound.cpp

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#include <SDL/SDL_mixer.h>
#include <iostream>
#include <SDL/SDL.h>
#include <vector>

#include "sound.h"
#include "sample.h"
#include "music.h"
#include "application.h"


using namespace std;

vector<Sample *>Sound::sEffects;
Music *Sound::theme;

Sound::Sound(int n) {
        //This should initialize the audio NF
        if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0) {
                cerr << "SDL_Init Error: " << SDL_GetError() << endl;
                return;
        }

        if (Mix_OpenAudio(22050, MIX_DEFAULT_FORMAT, 2, 2048) < 0) {
                cerr << "Mix_OpenAudio Error: " << Mix_GetError() << endl;
                return;
        }

        Mix_AllocateChannels(n);

        //put the sounds in the game.

        //sound 0: Ufo sound
        sEffects.push_back(new Sample(UFO_SOUND, -1));
        //sound 1: Gun Shot
        sEffects.push_back(new Sample(GUN_SHOT, 1));
        //sound 2: Walking sound
        sEffects.push_back(new Sample(WALK_SOUND, 2));
        //sound 3: Bear walking sound
        sEffects.push_back(new Sample(BEAR_WALK_SOUND_1, 3));

        //This should get the music going
        theme = new Music(THEME_MUSIC);
}

Sound::~Sound() {
        int numtimesopened, frequency, channels;
        Uint16 format;
        numtimesopened = Mix_QuerySpec(&frequency, &format, &channels);
        
        while (numtimesopened) {
                Mix_CloseAudio();
                numtimesopened--;
        }
    
        for(unsigned int k = 0; k < sEffects.size(); ++k)
                delete sEffects[k];
        
        sEffects.erase(sEffects.begin(), sEffects.end());

        delete theme;
}

void Sound::PlaySample(sound s) {
        switch(s) {
                case UFO_NOISE: sEffects[0]->Play(0); break;
                case GUNSHOT: sEffects[1]->Play(0); break;
                case WALKING: sEffects[2]->Play(0); break;
                case BEAR_WALK: sEffects[3]->Play(0); break;
        }
}

void Sound::PlayTheme(int loops) {
        theme->Play(loops);
}

void Sound::StopTheme() {
        theme->Stop();
}

void Sound::LoadTheme(string path) {
        if (ThemeIsPlaying()) StopTheme();
        delete theme;
        theme = new Music(path);
        PlayTheme(-1);
}

bool Sound::ThemeIsPlaying() {
        return theme->IsPlaying();
}

bool Sound::SampleIsPlaying(sound s) {
        switch(s) {
                case UFO_NOISE: return sEffects[0]->isPlaying();
                case GUNSHOT: return sEffects[1]->isPlaying();
                case WALKING: return sEffects[2]->isPlaying();
                case BEAR_WALK: return sEffects[3]->isPlaying();
        }
        return false;
}

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