e-how-to-play-audio.org

How to play audio

Regular steps to load and play sound/music

Here are the steps you should follow:

• Call InitAudioDevice to init audio device
• call LoadSound to create Sound instance
• call LoadMusicStream to create Music instance
• Call PlaySound to play your sound effect
• Call PlayMusicStream, PauseMusicStream, StopMusicStream to control your music, make sure to call UpdateMusicStream in every frame logic to update music buffer
• Optional, if you want to draw a music progress bar, then you need the following code to calculate the played time:

  // Time played normalized [0.0f..1.0f]
  var timePlayed: f32 = 0.0;
  
  while (is_running) {
      //
      // Update music buffer with new stream data
      //
      rl.UpdateMusicStream(background_music);
  
      //
      // Get normalized time played for current music stream, used to update
      // progress bar
      //
      timePlayed = rl.GetMusicTimePlayed(background_music) / rl.GetMusicTimeLength(background_music);
  
      // Make sure time played is no longer than music
      if (timePlayed > 1.0) {
          timePlayed = 1.0;
      }
  
  
      rl.BeginDrawing();
  
      //
      // Background music progress bar
      //
      rl.DrawRectangle(
          200, // x
          180, // y
          @as(c_int, @intFromFloat(timePlayed * 400.0)), // Played time width
          12, // height
          TRON_ORANGE,
      );
  
      rl.EndDrawing();
  }
      

• Finally, call UnloadMusicStream, UnloadSound and CloseAudioDevice before program closes

Example

src/tutorial_examples/how-to-play-audio.zig