84 lines
1.5 KiB
C++
84 lines
1.5 KiB
C++
#include "pch.h"
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#include "Sound.h"
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int Sound::num_channels;
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bool Sound::enabled_flag = false;
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int* Sound::TimeStamps = nullptr;
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bool Sound::Init(int channels, bool enableFlag)
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{
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Mix_Init(MIX_INIT_MID_Proxy);
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auto result = Mix_OpenAudio(MIX_DEFAULT_FREQUENCY, MIX_DEFAULT_FORMAT, 2, 1024);
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SetChannels(channels);
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Enable(enableFlag);
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return !result;
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}
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void Sound::Enable(bool enableFlag)
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{
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enabled_flag = enableFlag;
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if (!enableFlag)
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Mix_HaltChannel(-1);
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}
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void Sound::Activate()
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{
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Mix_Resume(-1);
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}
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void Sound::Deactivate()
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{
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Mix_Pause(-1);
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}
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void Sound::Close()
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{
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delete[] TimeStamps;
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TimeStamps = nullptr;
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Mix_CloseAudio();
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Mix_Quit();
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}
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void Sound::PlaySound(Mix_Chunk* wavePtr, int time)
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{
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if (wavePtr && enabled_flag)
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{
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if (Mix_Playing(-1) == num_channels)
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{
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auto oldestChannel = std::min_element(TimeStamps, TimeStamps + num_channels) - TimeStamps;
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Mix_HaltChannel(oldestChannel);
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}
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auto channel = Mix_PlayChannel(-1, wavePtr, 0);
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if (channel != -1)
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TimeStamps[channel] = time;
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}
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}
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Mix_Chunk* Sound::LoadWaveFile(const std::string& lpName)
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{
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auto wavFile = fopenu(lpName.c_str(), "r");
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if (!wavFile)
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return nullptr;
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fclose(wavFile);
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return Mix_LoadWAV(lpName.c_str());
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}
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void Sound::FreeSound(Mix_Chunk* wave)
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{
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if (wave)
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Mix_FreeChunk(wave);
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}
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void Sound::SetChannels(int channels)
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{
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if (channels <= 0)
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channels = 8;
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num_channels = channels;
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delete[] TimeStamps;
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TimeStamps = new int[num_channels]();
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Mix_AllocateChannels(num_channels);
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}
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