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Working on web examples

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Ray 2017-04-09 23:46:47 +02:00
parent 8374460c39
commit f7bebf9861
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docs/examples/web/audio/audio_module_playing.c Normal file
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/*******************************************************************************************
*
* raylib [audio] example - Module playing (streaming)
*
* NOTE: This example requires OpenAL Soft library installed
*
* This example has been created using raylib 1.5 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Copyright (c) 2016 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
#define MAX_CIRCLES 32
//----------------------------------------------------------------------------------
// Types and Structures Definition
//----------------------------------------------------------------------------------
typedef struct {
Vector2 position;
float radius;
float alpha;
float speed;
Color color;
} CircleWave;
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
int screenWidth = 800;
int screenHeight = 450;
Color colors[14] = { ORANGE, RED, GOLD, LIME, BLUE, VIOLET, BROWN, LIGHTGRAY, PINK,
YELLOW, GREEN, SKYBLUE, PURPLE, BEIGE };
// Creates ome circles for visual effect
CircleWave circles[MAX_CIRCLES];
Music xm;
float timePlayed = 0.0f;
static bool pause = false;
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Main Enry Point
//----------------------------------------------------------------------------------
int main()
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(screenWidth, screenHeight, "raylib [audio] example - module playing (streaming)");
InitAudioDevice(); // Initialize audio device
for (int i = MAX_CIRCLES - 1; i >= 0; i--)
{
circles[i].alpha = 0.0f;
circles[i].radius = GetRandomValue(10, 40);
circles[i].position.x = GetRandomValue(circles[i].radius, screenWidth - circles[i].radius);
circles[i].position.y = GetRandomValue(circles[i].radius, screenHeight - circles[i].radius);
circles[i].speed = (float)GetRandomValue(1, 100)/20000.0f;
circles[i].color = colors[GetRandomValue(0, 13)];
}
xm = LoadMusicStream("resources/mini1111.xm");
PlayMusicStream(xm); // Play module stream
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 0, 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
//--------------------------------------------------------------------------------------
UnloadMusicStream(xm); // Unload music stream buffers from RAM
CloseAudioDevice(); // Close audio device (music streaming is automatically stopped)
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// Update
//----------------------------------------------------------------------------------
UpdateMusicStream(xm); // Update music buffer with new stream data
// Restart music playing (stop and play)
if (IsKeyPressed(KEY_SPACE))
{
StopMusicStream(xm);
PlayMusicStream(xm);
}
// Pause/Resume music playing
if (IsKeyPressed(KEY_P))
{
pause = !pause;
if (pause) PauseMusicStream(xm);
else ResumeMusicStream(xm);
}
// Get timePlayed scaled to bar dimensions
timePlayed = GetMusicTimePlayed(xm)/GetMusicTimeLength(xm)*(screenWidth - 40);
for (int i = MAX_CIRCLES - 1; i >= 0; i--)
{
circles[i].alpha += circles[i].speed;
circles[i].radius += circles[i].speed*10.0f;
if (circles[i].alpha > 1.0f) circles[i].speed *= -1;
if (circles[i].alpha <= 0.0f)
{
circles[i].alpha = 0.0f;
circles[i].radius = GetRandomValue(10, 40);
circles[i].position.x = GetRandomValue(circles[i].radius, screenWidth - circles[i].radius);
circles[i].position.y = GetRandomValue(circles[i].radius, screenHeight - circles[i].radius);
circles[i].color = colors[GetRandomValue(0, 13)];
circles[i].speed = (float)GetRandomValue(1, 100)/20000.0f;
}
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
for (int i = MAX_CIRCLES - 1; i >= 0; i--)
{
DrawCircleV(circles[i].position, circles[i].radius, Fade(circles[i].color, circles[i].alpha));
}
// Draw time bar
DrawRectangle(20, screenHeight - 20 - 12, screenWidth - 40, 12, LIGHTGRAY);
DrawRectangle(20, screenHeight - 20 - 12, (int)timePlayed, 12, MAROON);
DrawRectangleLines(20, screenHeight - 20 - 12, screenWidth - 40, 12, GRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}