Introduce some infrastructure to permit games' print functions to

[sgt/puzzles] / puzzles.but

diff --git a/puzzles.but b/puzzles.but
index b143d50..40cfdae 100644 (file)
--- a/puzzles.but
+++ b/puzzles.but
@@ -1583,9 +1583,13 @@ right-clicking; whole rows and columns may be similarly locked by
 right-clicking in the laser firing range above/below that column, or
 to the left/right of that row.  
 
+The cursor keys may also be used to move around the grid. Pressing the
+Enter key will add a new ball-location guess, and pressing Space will
+lock a cell or a row/column.
+
 When an appropriate number of balls have been guessed a button will
-appear at the top-left corner of the grid; clicking that will mark
-your guesses. 
+appear at the top-left corner of the grid; clicking that (with mouse or
+cursor) will mark your guesses. 
 
 If you click the \q{mark} button and your guesses are not correct,
 the game will show you as little information as possible to
@@ -2131,6 +2135,15 @@ will be prevented from accidentally modifying any of those bridges
 in future. Left-clicking again on a highlighted island will unmark
 it and restore your ability to modify it.
 
+You can also use the cursor keys to move around the grid: if possible
+the cursor will always move orthogonally, otherwise it will move
+towards the nearest island to the indicated direction. Pressing the
+return key followed by a cursor key will lay an island in that direction
+(if available); pressing the space bar followed by a cursor key will
+lay a \q{non-bridge} marker.
+
+You can mark an island as finished by pressing the return key twice.
+
 Violations of the puzzle rules will be marked in red:
 
 \b An island with too many bridges will be highlighted in red.