I’m trying to code a 3D sound effect (.wav) for a room that measures, -3 to 3 units on the x-axis and -3 to 3 units on the z-axis. The sound effect is centered on the origin (0,0,0), but I’m having difficulty calculating the front vector (at least I think it’s that, my 3D maths isn’t all that good).

With the current code I’ve written so far, the sound is demonstrating signs of being in a 3D space but at certain angles it cuts out or the output is coming out the wrong speaker (i.e. if I directly face the effect along the z-axis no sound occurs).

Can anyone see if I’m doing something wrong or offer advice as to what might be going wrong if I’m actually calculating the front vector properly?

Thanks

- Bill

[code:2pnkoqd7]

// Angle, y-rotation, 0 degrees is vector (0,0,1)

void Update(float x_pos, float z_pos, float angle)

{

float lPos[3], x_foward, z_foward;

lPos[0] = x_pos;

lPos[1] = 0;

lPos[2] = z_pos;

x_foward = -sin((angle) * 0.0174532925);

z_foward = cos((angle) * 0.0174532925);

FSOUND_3D_Listener_SetAttributes(&lPos[0], NULL, x_foward, 0.0f, z_foward ,0.0f , 1.0f, 0.0f);

FSOUND_Update();

}

[/code:2pnkoqd7]

- Bill asked 13 years ago

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