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/*******************************************************************************************
*
*   raylib [audio] example - Multichannel sound playing
*
*   This example has been created using raylib 2.6 (www.raylib.com)
*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
*   Example contributed by Chris Camacho (@codifies) and reviewed by Ramon Santamaria (@raysan5)
*
*   Copyright (c) 2019 Chris Camacho (@codifies) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/

#include "raylib.h"

#if defined(PLATFORM_WEB)
    #include <emscripten/emscripten.h>
#endif

//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;

static Sound fxWav = { 0 };
static Sound fxOgg = { 0 };

//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void);     // Update and Draw one frame

//----------------------------------------------------------------------------------
// Program Main Entry Point
//----------------------------------------------------------------------------------
int main(void)
{
    // Initialization
    //--------------------------------------------------------------------------------------
    const int screenWidth = 800;
    const int screenHeight = 450;

    InitWindow(screenWidth, screenHeight, "raylib [audio] example - Multichannel sound playing");

    InitAudioDevice();      // Initialize audio device

    fxWav = LoadSound("resources/sound.wav");       // Load WAV audio file
    fxOgg = LoadSound("resources/target.ogg");      // Load OGG audio file
    
    SetSoundVolume(fxWav, 0.2);

#if defined(PLATFORM_WEB)
    emscripten_set_main_loop(UpdateDrawFrame, 60, 1);
#else
    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
    //--------------------------------------------------------------------------------------

    // Main game loop
    while (!WindowShouldClose())    // Detect window close button or ESC key
    {
        UpdateDrawFrame();
    }
#endif

    // De-Initialization
    //--------------------------------------------------------------------------------------
    StopSoundMulti();       // We must stop the buffer pool before unloading

    UnloadSound(fxWav);     // Unload sound data
    UnloadSound(fxOgg);     // Unload sound data

    CloseAudioDevice();     // Close audio device

    CloseWindow();          // Close window and OpenGL context
    //--------------------------------------------------------------------------------------

    return 0;
}

//----------------------------------------------------------------------------------
// Module Functions Definitions
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
    // Update
    //----------------------------------------------------------------------------------
    if (IsKeyPressed(KEY_ENTER)) PlaySoundMulti(fxWav);     // Play a new wav sound instance
    if (IsKeyPressed(KEY_SPACE)) PlaySoundMulti(fxOgg);     // Play a new ogg sound instance
    //----------------------------------------------------------------------------------

    // Draw
    //----------------------------------------------------------------------------------
    BeginDrawing();

        ClearBackground(RAYWHITE);
        
        DrawText("MULTICHANNEL SOUND PLAYING", 20, 20, 20, GRAY);
        DrawText("Press SPACE to play new ogg instance!", 200, 120, 20, LIGHTGRAY);
        DrawText("Press ENTER to play new wav instance!", 200, 180, 20, LIGHTGRAY);

        DrawText(FormatText("CONCURRENT SOUNDS PLAYING: %02i", GetSoundsPlaying()), 220, 280, 20, RED);

    EndDrawing();
    //----------------------------------------------------------------------------------
}