New example: XM module playing

examples/audio_module_playing.c

@@ -0,0 +1,138 @@
+/*******************************************************************************************
+*
+*   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"
+
+#define MAX_CIRCLES  64
+
+typedef struct {
+    Vector2 position;
+    float radius;
+    float alpha;
+    float speed;
+    Color color;
+} CircleWave;
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [audio] example - module playing (streaming)");
+
+    InitAudioDevice();              // Initialize audio device
+    
+    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];
+    
+    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)];
+    }
+    
+    // Load postprocessing bloom shader
+    Shader shader = LoadShader("resources/shaders/glsl330/base.vs", 
+                               "resources/shaders/glsl330/bloom.fs");
+
+    // Create a RenderTexture2D to be used for render to texture
+    RenderTexture2D target = LoadRenderTexture(screenWidth, screenHeight);
+
+    PlayMusicStream(0, "resources/audio/2t2m_spa.xm");         // Play module stream
+
+    float timePlayed = 0.0f;
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        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;
+            }
+        }
+
+        // Get timePlayed scaled to bar dimensions
+        timePlayed = (GetMusicTimePlayed(0)/GetMusicTimeLength(0)*(screenWidth - 40))*2;
+        
+        UpdateMusicStream(0);        // Update music buffer with new stream data
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(BLACK);
+            
+            BeginTextureMode(target);   // Enable drawing to texture
+
+                for (int i = MAX_CIRCLES - 1; i >= 0; i--)
+                {
+                    DrawCircleV(circles[i].position, circles[i].radius, Fade(circles[i].color, circles[i].alpha));
+                }
+                
+            EndTextureMode();           // End drawing to texture (now we have a texture available for next passes)
+            
+            BeginShaderMode(shader);
+
+                // NOTE: Render texture must be y-flipped due to default OpenGL coordinates (left-bottom)
+                DrawTextureRec(target.texture, (Rectangle){ 0, 0, target.texture.width, -target.texture.height }, (Vector2){ 0, 0 }, WHITE);
+                
+            EndShaderMode();
+
+            // 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, WHITE);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadShader(shader);           // Unload shader
+    UnloadRenderTexture(target);    // Unload render texture
+    
+    CloseAudioDevice();     // Close audio device (music streaming is automatically stopped)
+
+    CloseWindow();          // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}