Line of sight

Version 0.18: This article may not be up to date for the latest stable release of Crawl.

The default line of sight (LOS) in Crawl is a 15x15 square

There are some ways to modify your line of sight:

• The spell Darkness reduces LOS by 25%. The same effect is also provided by the shadow card and the Robe of Night.
• The nightstalker mutation reduces LOS by 1, 2, or 3 tiles depending on rank.

The following drawing shows fields within the default field of view with their grid distance.

777777777777777
766666666666667
765555555555567
765444444444567
765433333334567
765432222234567
765432111234567
7654321@1234567
765432111234567
765432222234567
765433333334567
765444444444567
765555555555567
766666666666667
777777777777777

History

Prior to 0.18, the lantern of shadows existed and could be used to further reduce the player's LOS.

Prior to 0.17, line of sight was circular with a radius of about 8.

In 0.7, the developers made an undocumented change to the LOS. Ranges are circular now, so every spell and ability that reaches a set distance got about two squares lopped off the diagonals. Stealthy characters can now reach their target in 5 squares (instead of 8) at certain angles.