Clues can now be entered for words

Finished implementing clues for words. Also written the interface
for getting an across or down word at a particular row/column.

diff --git a/crosswordpuzzle.py b/crosswordpuzzle.py
index 56807cd..9617897 100644 (file)
--- a/crosswordpuzzle.py
+++ b/crosswordpuzzle.py
@@ -45,6 +45,11 @@ class FrozenGridException (Exception):
        def __init__ (self):
                self.msg = "Grid is frozen and cannot be edited"
 
+# exception when no word is found at a position
+class NoWordException (Exception):
+       def __init__ (self, row, col):
+               self.pos = (row, col)
+
 class CrosswordPuzzle:
        def __init__ (self, rows, cols):
                # define number of rows and columns
@@ -63,6 +68,76 @@ class CrosswordPuzzle:
                        for j in range (cols):
                                self.data[i].append (GridItem ())
 
+       # getting a down word at a position
+       def get_word_down (self, row, col):
+               # if index is out of bounds
+               if row >= self.rows or col >= self.cols:
+                       raise NoWordException (row, col)
+
+               # if there is no occupied down letter at that position
+               if self.data[row][col].occupied_down is False:
+                       raise NoWordException (row, col)
+
+               # now traverse the grid to find the beginning of the word
+               i = row
+               while i >= 0:
+                       # if it is occupied down and is the beginning of the word
+                       if (self.data[i][col].occupied_down is True and
+                               self.data[i][col].down_start is True):
+                               start_row = i
+                               break
+                       i -= 1
+
+               i = start_row
+               word_chars = []
+               # now seek the end of the word
+               while i < self.rows:
+                       if self.data[i][col].occupied_down is True:
+                               word_chars.append (self.data[i][col].char)
+                       else:
+                               break
+                       i += 1
+
+               word = "".join (word_chars)
+
+               # return the word, starting row, column and length as a tuple
+               return (word, start_row, col, len(word))
+
+       # getting an across word at a position
+       def get_word_across (self, row, col):
+               # if index is out of bounds
+               if row >= self.rows or col >= self.cols:
+                       raise NoWordException (row, col)
+
+               # if there is no occupied across letter at that position
+               if self.data[row][col].occupied_across is False:
+                       raise NoWordException (row, col)
+
+               # now traverse the grid to look for the beginning of the word
+               i = col
+               while i >= 0:
+                       # if it is occupied across and is the beginning of the word
+                       if (self.data[row][i].occupied_across is True and
+                               self.data[row][i].across_start is True):
+                               start_col = i
+                               break
+                       i -= 1
+
+               i = start_col
+               word_chars = []
+               # now seek the end of the word
+               while i < self.cols:
+                       if self.data[row][i].occupied_across is True:
+                               word_chars.append (self.data[row][i].char)
+                       else:
+                               break
+                       i += 1
+
+               word = "".join (word_chars)
+
+               # return the word, starting column, row and length as a tuple
+               return (word, start_col, row, len(word))
+
        # setting a down word
        def set_word_down (self, row, col, word):
                # if the grid is frozen the abort

diff --git a/crosswordpuzzlecreator.py b/crosswordpuzzlecreator.py
index 4098cd3..ed7e1d8 100644 (file)
--- a/crosswordpuzzlecreator.py
+++ b/crosswordpuzzlecreator.py
@@ -77,6 +77,30 @@ class CrosswordPuzzleCreator:
                                sys.stdout.write (' ' + self.BLUE + "%2d" % row + self.ENDCOL + "\n")
                        raw_input (self.BRICKRED + "Press <return> to continue" + self.ENDCOL)
 
+       # set a clue to a word
+       def set_clue (self):
+               self.print_puzzle ()
+               # get the row and column
+               srow = raw_input (self.BRICKRED + "At row: " + self.ENDCOL)
+               scol = raw_input (self.BRICKRED + "At col: " + self.ENDCOL)
+               # try converting it to number
+               try:
+                       row = int (srow)
+                       col = int (scol)
+               except ValueError:
+                       sys.stderr.write ("Invalid row or column\n")
+                       return
+
+               try:
+                       aword, arow, acol, alen = self.puzzle.get_word_across (row, col)
+                       sys.stdout.write (self.BLUE + "Word at position: " + aword + "\n" + self.ENDCOL)
+                       clue = raw_input (self.BRICKRED + "Clue for word: " + self.ENDCOL)
+                       if clue:
+                               self.puzzle.data[arow][acol].clue_across = clue
+                               sys.stdout.write (self.BLUE + "Set clue: \n" + self.puzzle.data[arow][acol].clue_across)
+               except crosswordpuzzle.NoWordException:
+                       sys.stderr.write ("No across word found at that position")
+
        # add a word to the puzzle
        def add_word (self, across=True):
                # first display the grid
@@ -122,8 +146,7 @@ class CrosswordPuzzleCreator:
                                sys.stdout.write ("5. Remove down word\n")
                                sys.stdout.write ("6. Freeze grid\n")
                                sys.stdout.write ("7. Unfreeze grid\n")
-                               sys.stdout.write ("8. Set a clue\n")
-                               sys.stdout.write ("9. Remove clue\n")
+                               sys.stdout.write ("8. Set clue for word\n")
                                sys.stdout.write ("S. Save puzzle\n")
                                sys.stdout.write ("X. Exit to main menu\n" + self.ENDCOL)
                                ch = raw_input (self.BRICKRED + "Your choice: " + self.ENDCOL)
@@ -137,6 +160,8 @@ class CrosswordPuzzleCreator:
                                        self.puzzle.freeze_grid ()
                                elif ch == "7":
                                        self.puzzle.unfreeze_grid ()
+                               elif ch == "8":
+                                       self.set_clue ()
                                elif ch == "X" or ch == "x":
                                        break