man voice_sweep_pan (3): Starts a pan sweep for a voice. Allegro game programming library.

voice_sweep_pan(3) Starts a pan sweep for a voice. Allegro game programming library.

SYNOPSIS

#include <allegro.h>

void voice_sweep_pan(int voice, int time, int endpan);

Starts a pan sweep (left <-> right movement) from the current position to the specified ending position, lasting for time milliseconds.