/// <summary>
/// Sets the specified word on the grid.
/// </summary>
/// <param name='line'>
/// The WordLine to set.
/// </param>
private void SetWordOnGrid(WordLine line)
{
Point current_location = line.VirtualPosition.StartPoint;
char[] new_word = line.Word.ToCharArray();
int line_length = line.Word.Length;
for (int i=0; i<line_length; i++)
{
this.grid[current_location.X, current_location.Y] = new_word[i];
Point color_point = new Point(current_location.X, current_location.Y);
color_points.Add(color_point);
current_location+=line.VirtualPosition.Direction;
}
}
/// <summary>
/// Marks the word in the line represented by the two points. Valid lines can only be vertical,
/// horizontal or diagonal and must be inside the grid. Point (0,0) represents the top-left cell
/// of the grid.
/// </summary>
/// <returns>
/// <c>True</c> if a word was found in the specified coordinates, <c>False</c> otherwise.
/// </returns>
/// <param name='start_point'>
/// Start point of the word, this is where the first letter is located.
/// </param>
/// <param name='end_point'>
/// End point of the word, this is where the last letter is located.
/// </param>
public bool MarkWord(Point start_point, Point end_point)
{
GridLine line = new GridLine(start_point,end_point);
if (!ValidLine(line)) return false;
string word_on_grid = GetStringFromGrid(line);
WordLine word = new WordLine(line,word_on_grid);
if (notfound_words.Contains(word.Word))
{
Console.WriteLine("Word: "+word.Word);
notfound_words.Remove(word.Word);
found_words.Add(word.Word);
for(int i=0; i<word.Word.Length; i++)
{
Point color_point = word.RealPosition.StartPoint + word.RealPosition.Direction*i;
color_points.Add(color_point);
}
if (notfound_words.Count < 1) state = CLEARED;
return true;
}
return false;
}
/// <summary>
/// Attempts to place the next word of the unplace_words list in the start point supplied, following
/// the direction described by the second Point parameter.
/// </summary>
/// <returns>
/// Returns true if the word was correctly placed.
/// </returns>
/// <param name='direction'>
/// Describes the direction of the word. To correctly set this value, imagine an xy-plane and draw an
/// arrow from point (0,0) to point(X,Y) where -1 <= X <= 1, same goes for Y. That arrow represents
/// the direction the word should follow.
/// Examples:
/// Point ( 1, 1) = Going northeast, or diagonal up-right direction.
/// Point (-1, 0) = Going west, or horizontal left direction.
/// Point ( 1, 0) = Going east, or horizontal right direction.
/// Point ( 0,-1) = Going south, or vertical down direction.
/// </param>
/// <param name='word'>
/// The word to place in the grid.
/// </param>
/// <exception cref="NoWordsToPlaceException">If the list of unplaced words is empty, this exception will be thrown</exception>
public bool PlaceWord(Point start_point, Point direction)
{
if (this.unplaced_words.Count == 0) throw new NoWordsToPlaceException();
if (direction.X==0 && direction.Y==0) throw new NullDirection();
if (!ValidPoint(start_point)) throw new InvalidWordStartPoint();
int slide_attempts = 0, slide_distance = 0;
WordLine next_word = new WordLine(start_point,direction,(string) unplaced_words[0]);
while(!ValidLine(next_word.VirtualPosition) && slide_attempts<slide_tolerance)
{
slide_distance = GetNextSlideDistance(slide_distance);
next_word.Slide(slide_distance);
slide_attempts++;
if (slide_tolerance/2 == slide_attempts) next_word.ForceUndefSlope();
}
slide_distance = 0; // Reset the slide distance
while(!CanPlaceWord(next_word) && slide_attempts<slide_tolerance)
{
slide_distance = GetNextSlideDistance(slide_distance);
next_word.Slide(slide_distance);
slide_attempts++;
}
if (!(slide_attempts>=slide_tolerance))
{
SetWordOnGrid(next_word);
notfound_words.Add(next_word.Word);
unplaced_words.RemoveAt(0);
}
return !(slide_attempts>=slide_tolerance);
}
public string MarkAndGetWord(Point start_point, Point end_point)
{
GridLine line = new GridLine(start_point,end_point);
WordLine word = new WordLine(line,new string(GetWordFromGrid(line)));
if (notfound_words.Contains(word.Word))
{
notfound_words.Remove(word.Word);
found_words.Add(word.Word);
for(int i=0; i<word.Word.Length; i++)
{
Point color_point = word.RealPosition.StartPoint + word.RealPosition.Direction*i;
color_points.Add(color_point);
}
if (notfound_words.Count < 1) state = CLEARED;
return word.Word;
}
return null;
}
public bool InsideGridBounds(WordLine word)
{
return ( (word.VirtualPosition.StartPoint.X|word.VirtualPosition.StartPoint.Y|
word.VirtualPosition.EndPoint.X|word.VirtualPosition.EndPoint.Y) >= 0 &&
(word.VirtualPosition.StartPoint.X|word.VirtualPosition.StartPoint.Y|
word.VirtualPosition.EndPoint.X|word.VirtualPosition.EndPoint.Y) < grid_size);
}
/// <summary>
/// Determines whether the specified word can be placed in the coordinates of it's VirtualPosition.
/// </summary>
/// <returns>
/// <c>true</c> if this instance can place the specified word; otherwise, <c>false</c>.
/// </returns>
/// <param name='word'>
/// If set to <c>true</c> word.
/// </param>
public bool CanPlaceWord(WordLine word)
{
if (!InsideGridBounds(word)) return false;
int word_length = word.Word.Length;
char[] test_aux = new char[word_length],
grid_word = GetWordFromGrid(word.VirtualPosition),
new_word = word.Word.ToCharArray();
for (int i=0; i<word_length;i++)
{
test_aux[i] = (grid_word[i]==EMPTY)? new_word[i]: CompareChars(new_word[i],grid_word[i]);
}
return (new string(test_aux).Equals(new string(new_word)));
}
public void WordSearchGridTestSetup()
{
TestWords = new ArrayList();
FillTestWords();
WordTests = new WordLine[2];
Test1 = new WordSearchGrid(TestWords);
WordTests[0] = new WordLine(new Point(1,2), new Point(1,0), (string)TestWords[0]);
WordTests[1] = new WordLine(new Point(3,1), new Point(0,1), (string)TestWords[1]);
}
public void WordLineTestSetup()
{
Serge = new WordLine(new Point(6,10),new Point(1,0),"SERGE");
Programming = new WordLine(new Point(6,0),new Point(0,1),"prOgrAmming");
Test = new WordLine(new Point(2,7),new Point(0,1),"Test");
TestFixture = new WordLine(new Point(13,14),new Point(-1,-1),"TestFixture");
}
