Light can be seen at great distances, which means that what a PC can actually see will often be determined by lights sources in a dozen different locations. When those light sources are only referenced in the location keys, it becomes almost trivial for errors to be made.
Player: Okay, we head through the arch.
GM: The arch leads to a vaulted chamber perhaps forty feet long lit with an eery red light which glistens off the blood streaming down the walls. The light seems to be pulsing from a glowing heart which hovers in the middle of the chamber.
Player: Man, I feel like we probably should have noticed that during the half hour we spent searching the room right next door.
Some modern maps will take advantage of their “photo realistic” appearance to denote illumination or light sources. For an extreme example, here’s a sample from Fane of the Drow (a product from what I refer to as the Effervescent Period of WotC cartography):
But I’ve struggle to find a method that can be used with perfect clarity, particularly when it comes to more utilitarian maps. (Like those that you would draw for yourself.)
Roger the GS, however, has recently proposed using a red starburst symbol. The resolution on his reference document was a little low for my use, so I’ve re-engineered it:
I like this symbol a lot. It’s simple, intuitive, and universal in its form. It doesn’t necessarily require the color-coding, but certainly benefits from it.
But let’s take a moment to consider the best way to use the symbol. For example we could use small versions of the symbol to indicate every light source, as shown in this map of a long hallway lit by sconces:
This has a lot of obvious utility, but could also very quickly lead to unnecessarily cluttered maps.
Another option would be to use a solitary symbol to mean “there’s a light source in this room”:
Less information being conveyed, but also less clutter.
A third option would be to use a slightly larger symbol to encode the size of the light source (as measured in its radius of illumination). The size require for legible digits makes this a poor fit for “every source of illumination”, but it combines well with the “one symbol per room” method:
Thoughts? Which method seems most useful to you?
This post is part of the RPG Blog Carnival for Cartography.