I'm converting the code for the Maniac Miner game from AUM3, and in this function

function player_event()
{
if (event_type == EVENT_ENTITY || event_type == EVENT_PUSH || event_type == EVENT_IMPACT)
{
wait (1);
if (you.skill9 == 1) // collision with a rock or a monster
{
player.x = start_coords.x; // go to starting point
player.y = start_coords.y;
player.z = start_coords.z;
}
}
}

I get the error message "'x'; is not a member of 'function'"

I've been trying to figure out what that could mean, and how to fix it, but I have no idea.