diff options
Diffstat (limited to 'crawl-ref/source/ray.cc')
| -rw-r--r-- | crawl-ref/source/ray.cc | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/crawl-ref/source/ray.cc b/crawl-ref/source/ray.cc index bbf812009f..32b9531fd5 100644 --- a/crawl-ref/source/ray.cc +++ b/crawl-ref/source/ray.cc @@ -1,6 +1,14 @@ /* - * File: .cc - * Summary: + * File: ray.cc + * Summary: Diamond grid wrapper around geom::ray. + * + * The geom::grid diamonds is a checkerboard grid rotated + * by 45 degrees such that the black cells ("diamonds") lie just + * within the normal crawl map cells. + * + * ray_def provides for advancing and reflecting rays in + * map coordinates, where a ray touches a given cell if it + * meets the diamond. */ #include "AppHdr.h" |