// Play ding every 250MS using two buffers to avoid cutting the sound off as quickly, and let user press escape to quit and p to pause/unpause timer.

void main()
{
sound ding1;
sound ding2;
show_game_window("Timer Test");

ding1.load("C:\\Windows\\media\\ding.wav");
ding2.load("C:\\Windows\\media\\ding.wav");
if(ding1.active==false)
{
alert("Error", "The sound could not be loaded.");
exit();
}
if(ding2.active==false)
{
alert("Error", "The sound could not be loaded.");
exit();
}

// We pan the two buffers a little bit so that they can be distinguished.
ding1.pan=-20;
ding2.pan=20;

int current_buffer=1;
bool paused=false;

ding1.play();

timer counter;

while(true)
{
if(key_pressed(KEY_ESCAPE))
{
exit();
}
if(key_pressed(KEY_P))
{
if(paused==true)
{
paused=false;
counter.resume();
}
else
{
counter.pause();
paused=true;
}
}
if(counter.elapsed>=250)
{
counter.restart();
if(current_buffer==1)
{
current_buffer=2;
if(ding2.playing==true)
{
ding2.stop();
}
ding2.play();
}
else
{
current_buffer=1;
if(ding1.playing==true)
{
ding1.stop();
}
ding1.play();
}
}
wait(5);
}
}