Add comments

src/ai.cpp

@@ -29,6 +29,10 @@ namespace toruschess {
 	static const int NOMOVE = -MAXVAL - 1;
 	static const int DRAWVAL = -7;
 
+	/* standard minimax search; saves the best move in *move if move != NULL;
+	 * balance is the current "heuristic value" of a state (mult with curp to get the
+	 * rating for a specifig player)
+	 */
 	static int minimax(Field &field, int bal, Player curp, unsigned int depth, Move *move) {
 		if (depth == 0) return curp * bal;
 		
@@ -72,21 +76,4 @@ namespace toruschess {
 		return move;
 	}
 	
-	
-	Move ai::getMove(const Game *game) {
-		Player curp = NOPLAYER;
-		switch (game->state()) {
-		case TURN_WHITE:
-			curp = WHITE;
-			break;
-		case TURN_BLACK:
-			curp = BLACK;
-			break;
-		default:
-			return Move();
-		}
-		
-		Field field = *game->field();
-		return getMove(field, curp, 2);
-	}
 }

src/ai.h

@@ -26,10 +26,14 @@
 	@author Stefan Bühler <stbuehler@web.de>
 */
 namespace toruschess {
-	class ai{
+	class ai {
 	public:
+		/** Modifies the field while calculating, so not thread-safe
+		  *    (just create a copy of the real field);
+		  * curp: which players turn
+		  * depth: how many moves to be calculated
+		  */
 		static Move getMove(Field &field, Player curp, int depth);
-		static Move getMove(const Game *game);
 	};
 }
 

src/field2d.h

@@ -31,12 +31,14 @@
 */
 namespace toruschess {
 
+	/** Widget for the 2d field view (Game* is shared with other widgets) */
 	class Field2D : public QWidget {
 	Q_OBJECT
 	public:
 		Field2D(Game *game, QWidget *parent = 0);
 		virtual ~Field2D();
 		
+		/** Mark the destination fields */
 		void markMoves(const QList<Move> &moves);
 		
 		virtual QSize sizeHint() const;
@@ -48,12 +50,16 @@ namespace toruschess {
 		virtual void mouseReleaseEvent(QMouseEvent *event);
 		virtual void wheelEvent(QWheelEvent *event);
 		
+		/* update field buffer size */
 		void checkSizes();
+		/* update field buffer */
 		void updateFieldBuffer();
 		
+		/* find position on board from window coords */
 		Pos findPos(int x, int y);
 		
 	protected slots:
+		/* slot for game updated event */
 		void fieldUpdated();
 		
 	private:
@@ -63,7 +69,7 @@ namespace toruschess {
 		QList<Move> m_markedMoves;
 		
 		int m_fieldWidth, m_fieldHeight;
-		int m_originX, m_originY;
+		int m_originX, m_originY; /* offset for moving board in window */
 		
 		int m_mouseLastX, m_mouseLastY;
 		

src/field3d.cpp

@@ -27,8 +27,6 @@
 
 #include <QGLPixelBuffer>
 
-#include <QDebug>
-
 #include <math.h>
 
 template<typename T>
@@ -55,13 +53,11 @@ namespace toruschess {
 	  m_originX(0), m_originY(0), m_mouseLastX(0), m_mouseLastY(0),
 	  m_skySphere(0), m_skyTextureID(0), m_skyTimerID(0), m_skyOffset(0),
 	  m_pickTextureID(0) {
-		qDebug("Field3d::Field3D");
 		for (int x = 0; x < 8; x++) for (int y = 0; y < 8; y++) m_marked[x][y] = false;
 		m_lib->setSize(m_textureSize / 8, m_textureSize / 8);
 	}
 	
 	Field3D::~Field3D() {
-		qDebug("Field3d::~Field3D");
 		freeTexture();
 		
 		if (m_skySphere) gluDeleteQuadric(m_skySphere);
@@ -83,21 +79,23 @@ namespace toruschess {
 	void Field3D::initializeGL() {
 		glClearColor(0.0, 0.0, 0.0, 0.0);
 		glEnable(GL_DEPTH_TEST);
-// 		glEnable(GL_CULL_FACE);
 		glEnable(GL_BLEND);
 		glBlendFunc(GL_ONE,GL_ONE_MINUS_SRC_ALPHA);
 		
 		glEnable(GL_LIGHTING);
 		glEnable(GL_LIGHT0);
+		glDisable(GL_LIGHT1);
 		glEnable(GL_COLOR_MATERIAL);
 		{
 			const GLfloat white[] = { 1.0, 1.0, 1.0, 1.0 },
 			              inv[] = { 0.0, 0.0, 0.0, 0.0 };
 			glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, white);
-			glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, inv);
+			glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
 			glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, inv);
 			glLightfv(GL_LIGHT0, GL_AMBIENT, white);
 			glLightfv(GL_LIGHT0, GL_DIFFUSE, inv);
+			glLightfv(GL_LIGHT1, GL_AMBIENT, inv);
+			glLightfv(GL_LIGHT1, GL_DIFFUSE, white);
 		}
 		
 		glFogi(GL_FOG_MODE, GL_EXP2);
@@ -127,8 +125,8 @@ namespace toruschess {
 	void Field3D::paintGL() {
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 		glEnable(GL_TEXTURE_2D);
-// 		m_lib->paint_pawn();
+		glEnable(GL_LIGHT0);
-// 		return;
+		glDisable(GL_LIGHT1);
 		
 		if (m_boardMode == TORUS) {
 			glDisable(GL_FOG);
@@ -180,6 +178,29 @@ namespace toruschess {
 				glTexCoord2f( repeat+ox, -repeat+oy); glVertex3f( 10*repeat, 0,  10*repeat);
 				glTexCoord2f( repeat+ox,  repeat+oy); glVertex3f( 10*repeat, 0, -10*repeat);
 			glEnd();
+			
+			glDisable(GL_TEXTURE_2D);
+			glEnable(GL_LIGHT1);
+			glDisable(GL_LIGHT0);
+			glMatrixMode(GL_MODELVIEW);
+			ox *= -10.0; oy *= 10.0;
+			ox += 10.0/16; oy += 10.0/16;
+			for (int i = 0; i < 8; i++) for (int j = 0; j < 8; j++) {
+				if (m_game->field()->piece(Pos(i, j)) == PAWN) {
+					if (m_game->field()->player(Pos(i, j)) == WHITE) {
+						glColor3f(1.0, 1.0, 1.0);
+					} else {
+						glColor3f(.0, .0, .0);
+					}
+					for (int x = -10; x <= 10; x++) for (int y = -10; y <= 10; y++) {
+						glPushMatrix();
+						glTranslatef(ox + 10.0/8.0*i + 10*x, 0, oy + 10.0/8.0*j + 10*y);
+						glRotatef(-90, 1, 0, 0);
+						m_lib->paint_pawn();
+						glPopMatrix();
+					}
+				}
+			}
 		}
 		glDisable(GL_TEXTURE_2D);
 		glBindTexture(GL_TEXTURE_2D, 0);
@@ -235,7 +256,6 @@ namespace toruschess {
 		unsigned char pxbuf[3];
 		glReadPixels(mx, height() - 1 - my, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pxbuf);
 		paintGL();
-		qDebug() << pxbuf[0] << pxbuf[1];
 		p = Pos(pxbuf[0] - 50, pxbuf[1] - 50);
 		return pxbuf[0] >= 50;
 	}
@@ -256,9 +276,7 @@ namespace toruschess {
 	
 	void Field3D::createTexture() {
 		freeTexture();
-// 		m_textureBuffer = new QGLPixelBuffer(QSize(m_textureSize, m_textureSize), QGLFormat::defaultFormat(), this);
 		m_textureBuffer = new QImage(QSize(m_textureSize, m_textureSize), QImage::Format_ARGB32_Premultiplied);
-// 		m_textureID = m_textureBuffer->generateDynamicTexture();
 		
 		updateTexture();
 		
@@ -305,13 +323,12 @@ namespace toruschess {
 			m_textureID = 0;
 		}
 		if (m_textureBuffer) {
-// 			delete m_textureBuffer;
+			delete m_textureBuffer;
 			m_textureBuffer = 0;
 		}
 	}
 	
 	void Field3D::updateTexture() {
-// 		m_textureBuffer->fill(Qt::black);
 		QPainter pt(m_textureBuffer);
 		pt.fillRect(QRect(0, 0, m_textureSize, m_textureSize), Qt::black);
 		
@@ -334,7 +351,6 @@ namespace toruschess {
 		pt.setCompositionMode(QPainter::CompositionMode_Plus);
 		pt.fillRect(0, 0, m_textureSize, m_textureSize, Qt::black);
 		pt.setCompositionMode(QPainter::CompositionMode_SourceOver);
-// 		m_textureBuffer->updateDynamicTexture(m_textureID);
 		if (m_textureID) deleteTexture(m_textureID);
 		m_textureID = bindTexture(*m_textureBuffer);
 	}

src/field3d.h

@@ -31,6 +31,9 @@
 */
 namespace toruschess {
 
+	/** Widget for the 3d field view (Game* is shared with other widgets)
+	  * Available modes: Plane vs. Torus and 2d vs 3d Figures
+	  */
 	class Field3D : public QGLWidget {
 	Q_OBJECT
 	public:
@@ -42,6 +45,7 @@ namespace toruschess {
 		
 		void markMoves(const QList<Move> &moves);
 		
+		/** Mark the destination fields */
 		virtual QSize sizeHint() const;
 		
 		BoardMode boardMode() const { return m_boardMode; }
@@ -63,15 +67,20 @@ namespace toruschess {
 		virtual void timerEvent(QTimerEvent *event);
 		
 	protected slots:
+		/* slot for game updated event */
 		void fieldUpdated();
 		
 	private:
+		/* update the GL_MODELVIEW matrix */
 		void updateCam();
 		
+		/* create textures: board texture, pick texture, skybox (sphere) texture */
 		void createTexture();
 		void freeTexture();
+		/* update board texture */
 		void updateTexture();
 		
+		/* find position on board from window coords */
 		bool findPos(int mx, int my, Pos &p);
 		
 		Game *m_game;

src/optiondlg.cpp

@@ -26,6 +26,7 @@ namespace toruschess {
 	: QDialog(parent), m_game(game) {
 		m_curMode = m_game->gameMode();
 		m_curAIStrength = m_game->aiStrength();
+		m_curViewMode = VIEW_2D;
 		setupUi(this);
 		
 		m_bgMode = new QButtonGroup(this);
@@ -34,6 +35,11 @@ namespace toruschess {
 		m_bgMode->addButton(rb_mode3, COMPUTER_HUMAN);
 		m_bgMode->addButton(rb_mode4, COMPUTER_COMPUTER);
 		
+		m_vMode = new QButtonGroup(this);
+		m_vMode->addButton(rb_view1, VIEW_2D);
+		m_vMode->addButton(rb_view2, VIEW_3D);
+		m_vMode->addButton(rb_view3, VIEW_TORUS);
+		
 		dlgReset();
 		
 		connect(m_game, SIGNAL(changedMode(GameMode)), this, SLOT(gameChangedMode(GameMode)));
@@ -66,9 +72,19 @@ namespace toruschess {
 		}
 	}
 	
+	void OptionDlg::changedViewMode(ViewMode viewMode) {
+		if (m_curViewMode != viewMode) {
+			if (m_vMode->checkedId() == m_curViewMode) {
+				m_vMode->button(viewMode)->setChecked(true);
+			}
+			m_curViewMode = viewMode;
+		}
+	}
+	
 	void OptionDlg::dlgReset() {
 		sb_aiStrength->setValue(m_curAIStrength);
 		m_bgMode->button(m_curMode)->setChecked(true);
+		m_vMode->button(m_curViewMode)->setChecked(true);
 	}
 	
 	void OptionDlg::dlgAccept() {
@@ -76,6 +92,8 @@ namespace toruschess {
 		m_game->setAiStrength(m_curAIStrength);
 		m_curMode = (GameMode) m_bgMode->checkedId();
 		m_game->setGameMode(m_curMode);
+		m_curViewMode = (ViewMode) m_vMode->checkedId();
+		emit setViewMode(m_curViewMode);
 	}
 	
 }

src/optiondlg.h

@@ -30,11 +30,23 @@
 	@author Stefan Bühler <stbuehler@web.de>
 */
 namespace toruschess {
+	typedef enum { VIEW_2D, VIEW_3D, VIEW_TORUS } ViewMode;
+	
+	/** Option Dialog
+	  *  Game options are set directly (so one dialog contols only one game instance)
+	  *  The view mode option is handled via signal/slot (default is VIEW_2D)
+	  */
 	class OptionDlg : public QDialog, private Ui::OptionDlg {
 	Q_OBJECT
 	public:
 		OptionDlg(Game *game, QWidget *parent = 0);
 		
+	signals:
+		void setViewMode(ViewMode viewMode);
+		
+	public slots:
+		void changedViewMode(ViewMode viewMode);
+		
 	private slots:
 		void gameChangedMode(GameMode mode);
 		void gameChangedAIStrength(int aiStrength);
@@ -46,7 +58,9 @@ namespace toruschess {
 		Game *m_game;
 		GameMode m_curMode;
 		int m_curAIStrength;
+		ViewMode m_curViewMode;
 		QButtonGroup *m_bgMode;
+		QButtonGroup *m_vMode;
 	};
 
 }

src/optiondlg.ui

@@ -116,9 +116,9 @@
      </property>
      <layout class="QHBoxLayout" name="horizontalLayout_2" >
       <item>
-       <widget class="QRadioButton" name="rb_view3" >
+       <widget class="QRadioButton" name="rb_view1" >
         <property name="text" >
-         <string>Torus</string>
+         <string>2D</string>
         </property>
        </widget>
       </item>
@@ -130,9 +130,9 @@
        </widget>
       </item>
       <item>
-       <widget class="QRadioButton" name="rb_view1" >
+       <widget class="QRadioButton" name="rb_view3" >
         <property name="text" >
-         <string>2D</string>
+         <string>Torus</string>
         </property>
        </widget>
       </item>

src/piecelibrary.h

@@ -29,21 +29,29 @@
 */
 namespace toruschess {
 
+	/** Handles texture/3ds loading from compiled-in Qt-Resource file
+	  */
 	class PieceLibrary : public QObject {
 	Q_OBJECT
 	public:
 		PieceLibrary(QObject *parent);
 		virtual ~PieceLibrary();
 		
+		/* one PieceLibrary instance manages one set of images with a specific size
+		 */
 		QSize pieceSize() const { return QSize(m_width, m_height); }
 		QSize minPieceSize() const { return QSize(20, 20); }
 		void setSize(int width, int height);
 		
+		/* just paint the 2d picture of the "place" figure */
 		void paint(QPainter &pt, int place) const;
+		/* just paint the 2d picture of the "place" figure into the given rect */
 		void paint(QPainter &pt, int place, const QRect &rect) const;
 		
+		/* paint background of a field into the given rect */
 		void paint_board(QPainter &pt, bool darkField, const QRect &rect) const;
 		
+		/* paint a 3d pawn */
 		void paint_pawn();
 		
 	private:

src/testgame.cpp

@@ -44,13 +44,16 @@ namespace toruschess {
 
 	TestGame::TestGame(QWidget *parent)
 	: QMainWindow(parent), m_game(new Game()), m_optionDlg(new OptionDlg(m_game, this)), m_viewMode((ViewMode) -1) {
+		connect(this, SIGNAL(changedViewMode(ViewMode)), m_optionDlg, SLOT(changedViewMode(ViewMode)));
+		connect(m_optionDlg, SIGNAL(setViewMode(ViewMode)), this, SLOT(setViewMode(ViewMode)));
+		
 		setWindowTitle("Torus Chess");
 		
 		QWidget *centralWidget = new QWidget(this);
 		m_fieldsLayout = new QStackedLayout(centralWidget);
 		m_field2d = new Field2D(m_game, centralWidget);
 		m_field3d = new Field3D(m_game, centralWidget);
-		m_fieldsLayout->addWidget(m_field2d);
+			m_fieldsLayout->addWidget(m_field2d);
 		m_fieldsLayout->addWidget(m_field3d);
 		centralWidget->setLayout(m_fieldsLayout);
 		setCentralWidget(centralWidget);

src/testgame.h

@@ -39,8 +39,6 @@
 */
 namespace toruschess {
 	
-	typedef enum { VIEW_2D, VIEW_3D, VIEW_TORUS } ViewMode;
-	
 	class TestGame : public QMainWindow {
 	Q_OBJECT
 	public:

src/toruschess.h

@@ -29,7 +29,12 @@
 	@author Stefan Bühler <stbuehler@web.de>
 */
 namespace toruschess {
-
+	
+	/* Game logic
+	 *
+	 * "piece" and "player" are combined to "place": place = piece * player;
+	 */
+	
 	class Pos;
 	class Field;
 	class Game;
@@ -50,6 +55,7 @@ namespace toruschess {
 
 	QString state2string(GameState state);
 
+	/* coords for a field on the board */
 	class Pos {
 	public:
 		Pos() : m_x(0), m_y(0) { }
@@ -66,6 +72,9 @@ namespace toruschess {
 		int m_x, m_y;
 	};
 
+	/* some basic information for one move: from and to,
+	 * which figure got moved, which (if any) got beaten
+	 */
 	class Move {
 	public:
 		Move();
@@ -73,8 +82,11 @@ namespace toruschess {
 		
 		const Pos& from() const { return m_from; }
 		const Pos& to() const { return m_to; }
+		/** figure which gets moved */
 		int prevFrom() const { return m_prevFrom; }
+		/** figure which gets beaten */
 		int prevTo() const { return m_prevTo; }
+		/** which player is moving (player from prevFrom()) */
 		Player player() const { return m_player; }
 		
 		bool operator==(const Move &other) const {
@@ -92,7 +104,9 @@ namespace toruschess {
 		int m_prevFrom, m_prevTo;
 		Player m_player;
 	};
-
+	
+	
+	/** the raw field: only knows which figures is where */
 	class Field {
 	public:
 		Field();
@@ -104,23 +118,32 @@ namespace toruschess {
 		int place(const Pos &p) const { return m_places[p.y()][p.x()]; }
 		int& place(const Pos &p) { return m_places[p.y()][p.x()]; }
 		
+		/* all valid moves for a piece */
 		QList<Move> validMoves(const Pos &from) const;
 		bool validMove(const Move &m) const; /* does not check for inCheck */
-		bool move(const Move &m);
+		bool move(const Move &m); /* check if the move is valid */
-		bool undo(const Move &m);
+		bool undo(const Move &m); /* check if the undo is valid */
 		
+		/* check if the king of a player at pos pking is in check */
 		bool inCheck(Player player, const Pos &pking) const;
+		/* check if the king of a player is in check */
 		bool inCheck(Player player) const;
 		
 		void move_unchecked(const Move &m);
 		void undo_unchecked(const Move &m);
 	private:
+		/* does not check for "in check" */
 		QList<Move> simpleValidMoves(const Pos &from) const;
 		
 		Pos m_wking, m_bking;
 		int m_places[8][8];
 	};
-
+	
+	
+	/* contains a field plus addition information about the game state
+	 * such as which turn it is or who has won
+	 * also is responsible to do the ai moves, if activated
+	 */
 	class Game : public QObject {
 	Q_OBJECT
 	public:
@@ -131,9 +154,12 @@ namespace toruschess {
 		GameState state() const { return m_state; }
 		QList<Move> moves() const { return m_moves; }
 		
+		/* only valid moves will be done */
 		bool move(const Move &m);
+		/* restart the game */
 		void restart();
 		
+		/* all valid moves for the current player */
 		QList<Move> possibleMoves() const;
 		
 		GameMode gameMode() const { return m_gameMode; }
@@ -170,6 +196,7 @@ namespace toruschess {
 		bool m_ignoreAI;
 	};
 	
+	/* Calculate the ai move in another thread so the main thread (gui) isn't blocked */
 	class GameAIThread : public QThread {
 	Q_OBJECT
 	public: