Bigfoot71 · April 10, 2025 00:32
diff --git a/example.c b/example.c
 #include <raylib.h>
 #include <raymath.h>

 static void SetSoundPosition(Camera listener, Sound sound, Vector3 position, float maxDist)
 {
    // Calculate direction vector and distance between listener and sound source
    Vector3 direction = Vector3Subtract(position, listener.position);
    float distance = Vector3Length(direction);
    
    // Apply logarithmic distance attenuation and clamp between 0-1
    float attenuation = 1.0f / (1.0f + (distance / maxDist));
    attenuation = Clamp(attenuation, 0.0f, 1.0f);
    
    // Calculate normalized vectors for spatial positioning
    Vector3 normalizedDirection = Vector3Normalize(direction);
    Vector3 forward = Vector3Normalize(Vector3Subtract(listener.target, listener.position));
    Vector3 right = Vector3Normalize(Vector3CrossProduct(forward, listener.up));
    
    // Reduce volume for sounds behind the listener
    float dotProduct = Vector3DotProduct(forward, normalizedDirection);
    if (dotProduct < 0.0f) {
        attenuation *= (1.0f + dotProduct * 0.5f);
    }
    
    // Set stereo panning based on sound position relative to listener
    float pan = 0.5f + 0.5f * Vector3DotProduct(normalizedDirection, right);
    
    // Apply final sound properties
    SetSoundVolume(sound, attenuation);
    SetSoundPan(sound, pan);
 }

 int main(void)
 {
    InitWindow(800, 600, "Quick Spatial Sound");
    InitAudioDevice();

    SetTargetFPS(60);
    DisableCursor();

    Sound sound = LoadSound("sound.wav");
    PlaySound(sound);

    Camera camera = {
        .position = (Vector3) { 0, 5, 5 },
        .target = (Vector3) { 0, 0, 0 },
        .up = (Vector3) { 0, 1, 0 },
        .fovy = 60,
    };

    while (!WindowShouldClose())
    {
        UpdateCamera(&camera, CAMERA_FREE);

        float th = GetTime();

        Vector3 spherePos = {
            .x = 5.0f * cosf(th),
            .y = 0.0f,
            .z = 5.0f * sinf(th)
        };

        SetSoundPosition(camera, sound, spherePos, 20.0f);
        if (!IsSoundPlaying(sound)) PlaySound(sound);

        BeginDrawing();
        {
            ClearBackground(BLACK);

            BeginMode3D(camera);
                DrawGrid(10, 2);
                DrawSphere(spherePos, 0.5f, RED);
            EndMode3D();
        }
        EndDrawing();
    }

    CloseAudioDevice();
    CloseWindow();
 }
diff --git a/sound-spatialization-with-raylib.md b/sound-spatialization-with-raylib.md
	#include <raylib.h>
	#include <raymath.h>

	static void SetSoundPosition(Camera listener, Sound sound, Vector3 position, float maxDist)
	{
	// Calculate direction vector and distance between listener and sound source
	Vector3 direction = Vector3Subtract(position, listener.position);
	float distance = Vector3Length(direction);

	// Apply logarithmic distance attenuation and clamp between 0-1
	float attenuation = 1.0f / (1.0f + (distance / maxDist));
	attenuation = Clamp(attenuation, 0.0f, 1.0f);

	// Calculate normalized vectors for spatial positioning
	Vector3 normalizedDirection = Vector3Normalize(direction);
	Vector3 forward = Vector3Normalize(Vector3Subtract(listener.target, listener.position));
	Vector3 right = Vector3Normalize(Vector3CrossProduct(forward, listener.up));

	// Reduce volume for sounds behind the listener
	float dotProduct = Vector3DotProduct(forward, normalizedDirection);
	if (dotProduct < 0.0f) {
	attenuation = (1.0f + dotProduct 0.5f);
	}

	// Set stereo panning based on sound position relative to listener
	float pan = 0.5f + 0.5f * Vector3DotProduct(normalizedDirection, right);

	// Apply final sound properties
	SetSoundVolume(sound, attenuation);
	SetSoundPan(sound, pan);
	}

	int main(void)
	{
	InitWindow(800, 600, "Quick Spatial Sound");
	InitAudioDevice();

	SetTargetFPS(60);
	DisableCursor();

	Sound sound = LoadSound("sound.wav");
	PlaySound(sound);

	Camera camera = {
	.position = (Vector3) { 0, 5, 5 },
	.target = (Vector3) { 0, 0, 0 },
	.up = (Vector3) { 0, 1, 0 },
	.fovy = 60,
	};

	while (!WindowShouldClose())
	{
	UpdateCamera(&camera, CAMERA_FREE);

	float th = GetTime();

	Vector3 spherePos = {
	.x = 5.0f * cosf(th),
	.y = 0.0f,
	.z = 5.0f * sinf(th)
	};

	SetSoundPosition(camera, sound, spherePos, 20.0f);
	if (!IsSoundPlaying(sound)) PlaySound(sound);

	BeginDrawing();
	{
	ClearBackground(BLACK);

	BeginMode3D(camera);
	DrawGrid(10, 2);
	DrawSphere(spherePos, 0.5f, RED);
	EndMode3D();
	}
	EndDrawing();
	}

	CloseAudioDevice();
	CloseWindow();
	}