[SCRIPT] How to add scripted sound

[Xanthos]

AddEntityCollideCallback("Player", "DarkRoomScript_1", "ScarySound", true, 1);

void ScarySound(string &in asParent, string &in asChild, int alState)
{
PlaySoundAtEntity("", "SOUNDNAME.snt", "EntityPlayedOn", 0, false);

GiveSanityDamage(5.0f);
}