* Added SudokuField::IsEmpty() method.

* The window now automatically generates a new sudoku if empty on start.
* Made SudokuField::IsSolved() const.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35519 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/apps/sudoku/SudokuField.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright 2007, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2007-2010, Axel Dörfler, [email protected].
  * Distributed under the terms of the MIT License.
  */
 
@@ -224,7 +224,7 @@ SudokuField::Dump()
 
 
 bool
-SudokuField::IsSolved()
+SudokuField::IsSolved() const
 {
 	for (uint32 y = 0; y < fSize; y++) {
 		for (uint32 x = 0; x < fSize; x++) {
@@ -237,6 +237,20 @@ SudokuField::IsSolved()
 }
 
 
+bool
+SudokuField::IsEmpty() const
+{
+	for (uint32 y = 0; y < fSize; y++) {
+		for (uint32 x = 0; x < fSize; x++) {
+			if (ValueAt(x, y) != 0)
+				return false;
+		}
+	}
+
+	return true;
+}
+
+
 void
 SudokuField::SetHintMaskAt(uint32 x, uint32 y, uint32 hintMask)
 {

src/apps/sudoku/SudokuField.h

@@ -1,5 +1,5 @@
 /*
- * Copyright 2007, Axel Dörfler, [email protected]. All rights reserved.
+ * Copyright 2007-2010, Axel Dörfler, [email protected].
  * Distributed under the terms of the MIT License.
  */
 #ifndef SUDOKU_FIELD_H
@@ -14,6 +14,7 @@ enum {
 	kInitialValue	= 0x01,
 };
 
+
 class SudokuField : public BArchivable {
 public:
 	SudokuField(uint32 size);
@@ -30,7 +31,8 @@ public:
 	void SetTo(const SudokuField* other);
 	void Reset();
 
-	bool IsSolved();
+	bool IsSolved() const;
+	bool IsEmpty() const;
 
 	uint32 Size() const { return fSize; }
 	uint32 BlockSize() const { return fBlockSize; }
@@ -71,4 +73,5 @@ private:
 	field*	fFields;
 };
 
+
 #endif	// SUDOKU_FIELD_H

src/apps/sudoku/SudokuWindow.cpp

@@ -288,6 +288,9 @@ SudokuWindow::SudokuWindow()
 
 	fProgressWindow = new ProgressWindow(this,
 		new BMessage(kMsgAbortSudokuGenerator));
+
+	if (fSudokuView->Field()->IsEmpty())
+		PostMessage(kMsgGenerateSudoku);
 }