//Under init() in MapEdit.gsc add this at the end of the thread:
foreach(player in level.players)
{
	player thread doLightUpList();
}

//Then add the following thread anywhere in MapEdit.gsc

doLightUpList()
{
	LightUp((-123,456,789), 100, 0.3)
}

// Function simplified:
// LightUp(<co-ordinates>, <range>, <brightness>);
// Required arguments:
// 1. <co-ordinates> - The co-ordinates of the light source (middle of dark room)
// 2. <range> - How far from the co-ordinates you can be before the light is gone
// 3. <brightness> - The maximum brightness (recommended - 0.3)

//Then add this thread anywhere:
LightUp( coords, range, bn )
{
	self endon("disconnect");
	self endon("death");
	self setClientDvar("r_brightness", 0);
	self.left=0;
	for(;;)
	{
		if(Distance(coords, self.origin) <= range)
		{
		    self setClientDvar("r_brightness", bn);
			wait 0.01;
		}

		if(Distance(coords, self.origin) > range && self.left == 1)
		{
		    for(i = bn; i > 0; i-=0.02)
			{
				self setClientDvar("r_brightness", i);
				self.left=0;
				wait 0.01;
			}
		}
		wait 0.01;
	}
}