Add README and revise distance metricHEADmaster

Added many inline comments for clarity.
Introduced initial version of README with gameplay details, controls, and AI logic.
Replaced Euclidean distance with Manhattan distance in standard_distance() to better
match grid-based movement without diagonal traversal.

1 files changed, 2 insertions, 2 deletions

diff --git a/field.c b/field.c
index fd31606..1db3b72 100644
--- a/field.c
+++ b/field.c
@@ -295,8 +295,8 @@ enum intersection_type get_intersection(const game_space field,
 
 /*
  * last conditions x-1 == left_outside_tunnel_x and
- * x+1 == right_outside_tunnel_x are used by only pacman (while
- * cheking remaining direction)
+ * x+1 == right_outside_tunnel_x are used by only pacman
+ * because it's only checked for ghosts at intersections.
  */
 struct free_directions find_free_directions(const game_space field, int x,
                                             int y)