Code clean up

core/src/io/github/lonamiwebs/klooni/Klooni.java

@@ -11,10 +11,16 @@ import io.github.lonamiwebs.klooni.screens.MainMenuScreen;
 
 public class Klooni extends Game {
 
+    //region Members
+
     // TODO Not sure whether the theme should be static or not since it might load textures
     public static Theme theme;
     public Skin skin;
 
+    //endregion
+
+    //region Creation
+
     @Override
     public void create() {
         prefs = Gdx.app.getPreferences("io.github.lonamiwebs.klooni.game");
@@ -51,11 +57,19 @@ public class Klooni extends Game {
         setScreen(new MainMenuScreen(this));
     }
 
+    //endregion
+
+    //region Screen
+
     @Override
     public void render() {
         super.render();
     }
 
+    //endregion
+
+    //region Disposing
+
     @Override
     public void dispose() {
         super.dispose();
@@ -63,6 +77,8 @@ public class Klooni extends Game {
         theme.dispose();
     }
 
+    //endregion
+
     //region Settings
 
     private static Preferences prefs;

core/src/io/github/lonamiwebs/klooni/Theme.java

@@ -10,8 +10,13 @@ import com.badlogic.gdx.scenes.scene2d.ui.Skin;
 import com.badlogic.gdx.utils.JsonReader;
 import com.badlogic.gdx.utils.JsonValue;
 
+// Represents a Theme for the current game.
+// These are loaded from external files, so more
+// can be easily added
 public class Theme {
 
+    //region Members
+
     private String displayName;
     private String name;
     private int price;
@@ -23,19 +28,28 @@ public class Theme {
 
     public NinePatch cellPatch;
 
+    // Save the button styles so the changes here get reflected
     private ImageButton.ImageButtonStyle[] buttonStyles;
 
+    //endregion
+
+    //region Constructor
+
     private Theme() {
         buttonStyles = new ImageButton.ImageButtonStyle[4];
     }
 
+    //endregion
+
+    //region Static methods
+
+    // Gets all the available themes on the available on the internal game storage
     public static Theme[] getThemes() {
         FileHandle[] handles = Gdx.files.internal("themes").list();
 
         Theme[] result = new Theme[handles.length];
-        for (int i = 0; i < handles.length; i++) {
+        for (int i = 0; i < handles.length; i++)
             result[i] = Theme.fromFile(handles[i]);
-        }
 
         return result;
     }
@@ -48,6 +62,11 @@ public class Theme {
         return new Theme().update(handle);
     }
 
+    //endregion
+
+    //region Theme updating
+
+    // Updates the theme with all the values from the specified file or name
     public Theme update(final String name) {
         return update(Gdx.files.internal("themes/"+name+".theme"));
     }
@@ -93,6 +112,14 @@ public class Theme {
         return this;
     }
 
+    //endregion
+
+    //region Applying the theme
+
+    public String getName() {
+        return name;
+    }
+
     public ImageButton.ImageButtonStyle getStyle(int button) {
         return buttonStyles[button];
     }
@@ -101,20 +128,22 @@ public class Theme {
         return cells[colorIndex];
     }
 
-    void dispose() {
-
-    }
-
     public void glClearBackground() {
         Gdx.gl.glClearColor(background.r, background.g, background.b, background.a);
     }
 
-    public String getName() {
-        return name;
-    }
-
     public void updateStyle(ImageButton.ImageButtonStyle style, int styleIndex) {
         style.imageUp = buttonStyles[styleIndex].imageUp;
         style.imageDown = buttonStyles[styleIndex].imageDown;
     }
+
+    //endregion
+
+    //region Disposal
+
+    void dispose() {
+
+    }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/actors/Band.java

@@ -15,21 +15,28 @@ import com.badlogic.gdx.utils.Align;
 import io.github.lonamiwebs.klooni.game.GameLayout;
 import io.github.lonamiwebs.klooni.game.Scorer;
 
-// Score and pause menu band actually
+// Horizontal band, used to show the score on the pause menu
 public class Band extends Actor {
 
+    //region Members
+
     private final Scorer scorer;
     private final Texture bandTexture;
 
     public final Rectangle scoreBounds;
     public final Rectangle infoBounds;
 
-    public final Label infoLabel;
+    private final Label infoLabel;
-    public final Label scoreLabel;
+    private final Label scoreLabel;
 
-    public Band(final GameLayout layout, final Scorer aScorer, final Color bandColor) {
+    //endregion
-        scorer = aScorer;
 
+    //region Constructor
+
+    public Band(final GameLayout layout, final Scorer scorer, final Color bandColor) {
+        this.scorer = scorer;
+
+        // A 1x1 pixel map will be enough since the band texture will then be expanded
         Pixmap pixmap = new Pixmap(1, 1, Pixmap.Format.RGBA8888);
         pixmap.setColor(bandColor);
         pixmap.fill();
@@ -49,9 +56,9 @@ public class Band extends Actor {
         layout.update(this);
     }
 
-    public void setGameOver() {
+    //endregion
-        infoLabel.setText("no moves left");
+
-    }
+    //region Public methods
 
     @Override
     public void draw(Batch batch, float parentAlpha) {
@@ -70,4 +77,11 @@ public class Band extends Actor {
         infoLabel.setBounds(x + infoBounds.x, y + infoBounds.y, infoBounds.width, infoBounds.height);
         infoLabel.draw(batch, parentAlpha);
     }
+
+    // Once game over is set on the menu, it cannot be reverted
+    public void setGameOver() {
+        infoLabel.setText("no moves left");
+    }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/actors/SoftButton.java

@@ -7,11 +7,18 @@ import com.badlogic.gdx.scenes.scene2d.utils.Drawable;
 import io.github.lonamiwebs.klooni.Klooni;
 import io.github.lonamiwebs.klooni.Theme;
 
+// Small wrapper to use themed image buttons more easily
 public class SoftButton extends ImageButton {
 
+    //region Members
+
     private int styleIndex;
     private Drawable image;
 
+    //endregion
+
+    //region Constructor
+
     public SoftButton(int styleIndex, String imageName) {
         super(Klooni.theme.getStyle(styleIndex));
 
@@ -19,13 +26,22 @@ public class SoftButton extends ImageButton {
         image = Theme.skin.getDrawable(imageName);
     }
 
+    //endregion
+
+    //region Public methods
+
     @Override
     public void draw(Batch batch, float parentAlpha) {
-        // Always update the style to make sure we're using the right colors
+        // Always update the style to make sure we're using the right image.
+        // This might not always be the case since two buttons can be using
+        // the "same" style (except for the image up, i.e. after coming from
+        // the customize menu), so make sure to update it always.
         ImageButtonStyle style = getStyle();
         Klooni.theme.updateStyle(style, styleIndex);
         style.imageUp = image;
 
         super.draw(batch, parentAlpha);
     }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/actors/ThemeCard.java

@@ -1,6 +1,5 @@
 package io.github.lonamiwebs.klooni.actors;
 
-import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.graphics.Color;
 import com.badlogic.gdx.graphics.Pixmap;
 import com.badlogic.gdx.graphics.Texture;
@@ -11,12 +10,20 @@ import io.github.lonamiwebs.klooni.Theme;
 import io.github.lonamiwebs.klooni.game.Cell;
 import io.github.lonamiwebs.klooni.game.GameLayout;
 
+// Card-like actor used to display information about a given theme
 public class ThemeCard extends Actor {
 
+    //region Members
+
     public final Theme theme;
     private final Texture background;
 
+    //endregion
+
+    //region Constructor
+
     public ThemeCard(final GameLayout layout, final Theme theme) {
+        // A 1x1 pixel map will be enough, the background texture will then be stretched accordingly
         // TODO We could also use white color and then batch.setColor(theme.background)
         Pixmap pixmap = new Pixmap(1, 1, Pixmap.Format.RGBA8888);
         pixmap.setColor(theme.background);
@@ -26,11 +33,12 @@ public class ThemeCard extends Actor {
 
         this.theme = theme;
         layout.update(this);
-
-        setWidth(Gdx.graphics.getWidth());
-        setScaleX(200);
     }
 
+    //endregion
+
+    //region Public methods
+
     @Override
     public void draw(Batch batch, float parentAlpha) {
         final float x = getX(), y = getY();
@@ -55,4 +63,6 @@ public class ThemeCard extends Actor {
         Cell.draw(theme.getCellColor(8), batch, x + cellSize * 2, y + cellSize * 3, cellSize);
         Cell.draw(theme.getCellColor(3), batch, x + cellSize * 3, y + cellSize * 3, cellSize);
     }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/game/Board.java

@@ -8,18 +8,26 @@ import com.badlogic.gdx.math.Vector2;
 
 import io.github.lonamiwebs.klooni.Klooni;
 
+// Represents the on screen board, with all the put cells
+// and functions to determine when it is game over given a PieceHolder
 public class Board {
 
-    Cell[][] cells;
+    //region Members
+
     public final int cellCount;
     public float cellSize;
-
+    private Cell[][] cells;
-    private final Vector2 lastPutPiecePos; // Used to animate cleared cells vanishing
 
     final Vector2 pos;
-
     private final Sound stripClearSound;
 
+    // Used to animate cleared cells vanishing
+    private final Vector2 lastPutPiecePos;
+
+    //endregion
+
+    //region Constructor
+
     public Board(final GameLayout layout, int cellCount) {
         this.cellCount = cellCount;
 
@@ -27,9 +35,9 @@ public class Board {
 
         lastPutPiecePos = new Vector2();
         pos = new Vector2();
-        layout.update(this);
 
-        // Cell size depends on the layout to be updated
+        // Cell size depends on the layout to be updated first
+        layout.update(this);
         cells = new Cell[this.cellCount][this.cellCount];
         for (int i = 0; i < this.cellCount; i++) {
             for (int j = 0; j < this.cellCount; j++) {
@@ -39,14 +47,21 @@ public class Board {
         }
     }
 
+    //endregion
+
+    //region Private methods
+
+    // True if the given cell coordinates are inside the bounds of the board
     private boolean inBounds(int x, int y) {
         return x >= 0 && x < cellCount && y >= 0 && y < cellCount;
     }
 
+    // True if the given piece at the given coordinates is not outside the bounds of the board
     private boolean inBounds(Piece piece, int x, int y) {
         return inBounds(x, y) && inBounds(x + piece.cellCols - 1, y + piece.cellRows - 1);
     }
 
+    // This only tests for the piece on the given coordinates, not the whole board
     private boolean canPutPiece(Piece piece, int x, int y) {
         if (!inBounds(piece, x, y))
             return false;
@@ -59,27 +74,51 @@ public class Board {
         return true;
     }
 
-    public boolean canPutPiece(Piece piece) {
+    // Returns true iff the piece was put on the board
-        for (int i = 0; i < cellCount; i++) {
+    private boolean putPiece(Piece piece, int x, int y) {
-            for (int j = 0; j < cellCount; j++) {
+        if (!canPutPiece(piece, x, y))
-                if (canPutPiece(piece, j, i)) {
+            return false;
+
+        lastPutPiecePos.set(piece.calculateGravityCenter());
+        for (int i = 0; i < piece.cellRows; i++) {
+            for (int j = 0; j < piece.cellCols; j++) {
+                if (piece.filled(i, j)) {
+                    cells[y+i][x+j].set(piece.color);
+                }
+            }
+        }
+
         return true;
     }
+
+    //endregion
+
+    //region Public methods
+
+    public void draw(SpriteBatch batch) {
+        for (int i = 0; i < cellCount; i++)
+            for (int j = 0; j < cellCount; j++)
+                cells[i][j].draw(batch);
     }
-        }
+
+    public boolean canPutPiece(Piece piece) {
+        for (int i = 0; i < cellCount; i++)
+            for (int j = 0; j < cellCount; j++)
+                if (canPutPiece(piece, j, i))
+                    return true;
+
         return false;
     }
 
-    public boolean putScreenPiece(Piece piece) {
+    boolean putScreenPiece(Piece piece) {
-        // Get the local piece coordinates
+        // Convert the on screen coordinates of the piece to the local-board-space coordinates
-        // TODO Works weird, it puts the piece like one too low…
+        // This is done by subtracting the piece coordinates from the board coordinates
         Vector2 local = piece.pos.cpy().sub(pos);
         int x = MathUtils.round(local.x / piece.cellSize);
         int y = MathUtils.round(local.y / piece.cellSize);
         return putPiece(piece, x, y);
     }
 
-    public int clearComplete() {
     // This will clear both complete rows and columns, all at once.
     // The reason why we can't check first rows and then columns
     // (or vice versa) is because the following case (* filled, _ empty):
@@ -92,6 +131,7 @@ public class Board {
     //
     // If the piece is put on the top left corner, all the cells will be cleared.
     // If we first cleared the columns, then the rows wouldn't have been cleared.
+    public int clearComplete() {
         int clearCount = 0;
         boolean[] clearedRows = new boolean[cellCount];
         boolean[] clearedCols = new boolean[cellCount];
@@ -123,13 +163,11 @@ public class Board {
             float pan = 0;
 
             // Do clear those rows and columns
-            for (int i = 0; i < cellCount; i++) {
+            for (int i = 0; i < cellCount; i++)
-                if (clearedRows[i]) {
+                if (clearedRows[i])
-                    for (int j = 0; j < cellCount; j++) {
+                    for (int j = 0; j < cellCount; j++)
                         cells[i][j].vanish(lastPutPiecePos);
-                    }
+
-                }
-            }
             for (int j = 0; j < cellCount; j++) {
                 if (clearedCols[j]) {
                     pan += 2f * (j - cellCount / 2) / (float)cellCount;
@@ -150,27 +188,5 @@ public class Board {
         return clearCount;
     }
 
-    public boolean putPiece(Piece piece, int x, int y) {
+    //endregion
-        if (!canPutPiece(piece, x, y))
-            return false;
-
-        lastPutPiecePos.set(piece.calculateGravityCenter());
-        for (int i = 0; i < piece.cellRows; i++) {
-            for (int j = 0; j < piece.cellCols; j++) {
-                if (piece.filled(i, j)) {
-                    cells[y+i][x+j].set(piece.color);
-                }
-            }
-        }
-
-        return true;
-    }
-
-    public void draw(SpriteBatch batch) {
-        for (int i = 0; i < cellCount; i++) {
-            for (int j = 0; j < cellCount; j++) {
-                cells[i][j].draw(batch);
-            }
-        }
-    }
 }

core/src/io/github/lonamiwebs/klooni/game/Cell.java

@@ -9,19 +9,27 @@ import com.badlogic.gdx.math.Vector2;
 
 import io.github.lonamiwebs.klooni.Klooni;
 
+// Represents a single cell, with a position, size and color.
+// Instances will use the cell texture provided by the currently used skin.
 public class Cell {
 
+    //region Members
+
     private boolean empty;
     private Color color;
 
-    Vector2 pos;
+    private Vector2 pos;
-    float size;
+    private float size;
 
     private Color vanishColor;
     private float vanishSize;
     private float vanishElapsed;
     private float vanishLifetime;
 
+    //endregion
+
+    //region Constructor
+
     Cell(float x, float y, float cellSize) {
         pos = new Vector2(x, y);
         size = cellSize;
@@ -31,6 +39,11 @@ public class Cell {
         vanishElapsed = Float.POSITIVE_INFINITY;
     }
 
+    //endregion
+
+    //region Package local methods
+
+    // Sets the cell to be non-empty and of the specified color
     void set(Color c) {
         empty = false;
         color = c;
@@ -54,20 +67,9 @@ public class Cell {
         }
     }
 
-    // TODO Use skin atlas
-    public static void draw(Color color, Batch batch,
-                            float x, float y, float size) {
-        batch.setColor(color);
-        Klooni.theme.cellPatch.draw(batch, x, y, size, size);
-    }
-
-    boolean isEmpty() {
-        return empty;
-    }
-
     // Vanish from indicates the point which caused the vanishing to happen,
     // in this case, a piece was put. The closer it was put, the faster
-    // this piece will vanish.
+    // this piece will vanish. This immediately marks the piece as empty.
     void vanish(Vector2 vanishFrom) {
         if (empty) // We cannot vanish twice
             return;
@@ -90,4 +92,21 @@ public class Cell {
 
         color = Color.WHITE;
     }
+
+    boolean isEmpty() {
+        return empty;
+    }
+
+    //endregion
+
+    //region Static methods
+
+    // TODO Use skin atlas
+    public static void draw(Color color, Batch batch,
+                            float x, float y, float size) {
+        batch.setColor(color);
+        Klooni.theme.cellPatch.draw(batch, x, y, size, size);
+    }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/game/GameLayout.java

@@ -13,32 +13,47 @@ import io.github.lonamiwebs.klooni.actors.ThemeCard;
 // For example, the boardHeight on the left and the piece holder on the right
 public class GameLayout {
 
-    // Widths
+    //region Members
-    private float screenWidth, marginWidth, availableWidth;
 
-    // Heights
+    private float screenWidth, marginWidth, availableWidth;
-    private float screenHeight, logoHeight, scoreHeight, boardHeight, pieceHolderHeight;
+    private float scoreHeight, boardHeight, pieceHolderHeight;
+
+    //endregion
+
+    //region Constructor
 
     public GameLayout() {
         calculate();
     }
 
+    //endregion
+
+    //region Private methods
+
     private void calculate() {
         screenWidth = Gdx.graphics.getWidth();
-        screenHeight = Gdx.graphics.getHeight();
+        float screenHeight = Gdx.graphics.getHeight();
 
         // Widths
         marginWidth = screenWidth * 0.05f;
         availableWidth = screenWidth - marginWidth * 2f;
 
         // Heights
-        logoHeight = screenHeight * 0.10f;
+        // logoHeight = screenHeight * 0.10f; // Unused
         scoreHeight = screenHeight * 0.15f;
         boardHeight = screenHeight * 0.50f;
         pieceHolderHeight = screenHeight * 0.25f;
     }
 
-    // Note that we're now using Y-up coordinates
+    //endregion
+
+    //region Update layout methods
+
+    // These methods take any of the custom objects used in the game
+    // and positions them accordingly on the screen, by using relative
+    // coordinates. Since these objects are not actors and we cannot
+    // add them to a table (and would probably be harder), this approach
+    // was used. Note that all these are using Y-up coordinates.
     void update(Scorer scorer) {
         float cupSize = Math.min(scoreHeight, scorer.cupTexture.getHeight());
         final Rectangle area = new Rectangle(
@@ -94,4 +109,6 @@ public class GameLayout {
     public void update(ThemeCard card) {
         card.setSize(availableWidth - marginWidth, scoreHeight);
     }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/game/Piece.java

@@ -8,18 +8,31 @@ import com.badlogic.gdx.math.Vector2;
 
 import io.github.lonamiwebs.klooni.Klooni;
 
-// Pieces can be L shaped and be rotated 0 to 3 times to make it random
+// Represents a piece with an arbitrary shape, which
-// Maximum cellSize = 4
+// can be either rectangles (squares too) or L shaped
+// with any rotation.
 public class Piece {
 
+    //region Members
+
     final Vector2 pos;
-    float cellSize = 10f; // Default
+    final Color color;
 
     final int cellCols, cellRows;
     private boolean shape[][];
 
-    final Color color;
+    // Default arbitrary value
+    float cellSize = 10f;
 
+    //endregion
+
+    //region Constructors
+
+    // Rectangle-shaped constructor
+    //
+    // If swapSize is true, the rows and columns will be swapped.
+    // colorIndex represents a random index that will be used
+    // to determine the color of this piece when drawn on the screen.
     private Piece(int cols, int rows, boolean swapSize, int colorIndex) {
         color = Klooni.theme.getCellColor(colorIndex);
 
@@ -34,6 +47,7 @@ public class Piece {
         }
     }
 
+    // L-shaped constructor
     private Piece(int lSize, int rotateCount, int colorIndex) {
         color = Klooni.theme.getCellColor(colorIndex);
 
@@ -68,11 +82,12 @@ public class Piece {
         }
     }
 
-    boolean filled(int i, int j) {
+    //endregion
-        return shape[i][j];
-    }
 
-    public static Piece random() {
+    //region Static methods
+
+    // Generates a random piece with always the same color for the generated shape
+    static Piece random() {
         int color = MathUtils.random(8); // 9 pieces
         switch (color) {
             // Squares
@@ -93,10 +108,28 @@ public class Piece {
         throw new RuntimeException("Random function is broken.");
     }
 
+    //endregion
+
+    //region Package local methods
+
+    void draw(SpriteBatch batch) {
+        for (int i = 0; i < cellRows; i++)
+            for (int j = 0; j < cellCols; j++)
+                if (shape[i][j])
+                    Cell.draw(color, batch, pos.x + j * cellSize, pos.y + i * cellSize, cellSize);
+    }
+
+    // Calculates the rectangle of the piece with screen coordinates
     Rectangle getRectangle() {
         return new Rectangle(pos.x, pos.y, cellCols * cellSize, cellRows * cellSize);
     }
 
+    // Determines whether the shape is filled on the given row and column
+    boolean filled(int i, int j) {
+        return shape[i][j];
+    }
+
+    // Calculates the area occupied by the shape
     int calculateArea() {
         int area = 0;
         for (int i = 0; i < cellRows; i++) {
@@ -109,6 +142,7 @@ public class Piece {
         return area;
     }
 
+    // Calculates the gravity center of the piece shape
     Vector2 calculateGravityCenter() {
         int filledCount = 0;
         Vector2 result = new Vector2();
@@ -125,14 +159,5 @@ public class Piece {
         return result.scl(1f / filledCount);
     }
 
-    void draw(SpriteBatch batch) {
+    //endregion
-        for (int i = 0; i < cellRows; i++) {
-            for (int j = 0; j < cellCols; j++) {
-                if (shape[i][j]) {
-                    Cell.draw(color, batch,
-                            pos.x + j * cellSize, pos.y + i * cellSize, cellSize);
-                }
-            }
-        }
-    }
 }

core/src/io/github/lonamiwebs/klooni/game/PieceHolder.java

@@ -11,28 +11,43 @@ import com.badlogic.gdx.utils.Array;
 
 import io.github.lonamiwebs.klooni.Klooni;
 
+// A holder of pieces that can be drawn on screen.
+// Pieces can be picked up from it and dropped on a board.
 public class PieceHolder {
 
+    //region Members
+
+    final Rectangle area;
     private final Piece[] pieces;
-    private final Rectangle[] originalPositions; // Needed after a piece is dropped
 
     private final Sound pieceDropSound;
     private final Sound invalidPieceDropSound;
     private final Sound takePiecesSound;
 
+    // Count of pieces to be shown
     private final int count;
 
+    // Currently held piece index (picked by the user)
     private int heldPiece;
 
-    final Rectangle area;
+    // Needed after a piece is dropped, so it can go back
+    private final Rectangle[] originalPositions;
 
     // The size the cells will adopt once picked
     private final float pickedCellSize;
 
+    //endregion
+
+    //region Static members
+
     public static final int NO_DROP = 0;
     public static final int NORMAL_DROP = 1;
     public static final int ON_BOARD_DROP = 2;
 
+    //endregion
+
+    //region Constructor
+
     public PieceHolder(final GameLayout layout, final int pieceCount, final float pickedCellSize) {
         count = pieceCount;
         pieces = new Piece[count];
@@ -53,7 +68,21 @@ public class PieceHolder {
         takeMore();
     }
 
-    void takeMore() {
+    //endregion
+
+    //region Private methods
+
+    // Determines whether all the pieces have been put (and the "hand" is finished)
+    private boolean handFinished() {
+        for (int i = 0; i < count; i++)
+            if (pieces[i] != null)
+                return false;
+
+        return true;
+    }
+
+    // Takes a new set of pieces. Should be called when there are no more piece left
+    private void takeMore() {
         float perPieceWidth = area.width / count;
         for (int i = 0; i < count; i++) {
             pieces[i] = Piece.random();
@@ -85,15 +114,11 @@ public class PieceHolder {
         }
     }
 
-    boolean handFinished() {
+    //endregion
-        for (int i = 0; i < count; i++)
-            if (pieces[i] != null)
-                return false;
 
-        return true;
+    //region Public methods
-    }
 
-    // Pick the piece below the finger/mouse
+    // Picks the piece below the finger/mouse, returning true if any was picked
     public boolean pickPiece() {
         Vector2 mouse = new Vector2(
                 Gdx.input.getX(),
@@ -112,23 +137,20 @@ public class PieceHolder {
 
     public Array<Piece> getAvailablePieces() {
         Array<Piece> result = new Array<Piece>(count);
-        for (int i = 0; i < count; i++) {
+        for (int i = 0; i < count; i++)
-            if (pieces[i] != null) {
+            if (pieces[i] != null)
                 result.add(pieces[i]);
-            }
+
-        }
         return result;
     }
 
+    // If no piece is currently being held, the area will be 0
     public int calculateHeldPieceArea() {
-        if (heldPiece > -1) {
+        return heldPiece > -1 ? pieces[heldPiece].calculateArea() : 0;
-            return pieces[heldPiece].calculateArea();
-        } else {
-            return 0;
-        }
     }
 
-    // Returns one of the following: NO_DROP, NORMAL_DROP, ON_BOARD_DROP
+    // Tries to drop the piece on the given board. As a result, it
+    // returns one of the following: NO_DROP, NORMAL_DROP, ON_BOARD_DROP
     public int dropPiece(Board board) {
         if (heldPiece > -1) {
             boolean put = board.putScreenPiece(pieces[heldPiece]);
@@ -154,6 +176,7 @@ public class PieceHolder {
             return NO_DROP;
     }
 
+    // Updates the state of the piece holder (and the held piece)
     public void update() {
         Piece piece;
         if (heldPiece > -1) {
@@ -163,7 +186,7 @@ public class PieceHolder {
                     Gdx.input.getX(),
                     Gdx.graphics.getHeight() - Gdx.input.getY()); // Y axis is inverted
 
-            // Center the piece
+            // Center the new piece position
             mouse.sub(piece.getRectangle().width / 2, piece.getRectangle().height / 2);
 
             piece.pos.lerp(mouse, 0.4f);
@@ -194,4 +217,6 @@ public class PieceHolder {
             }
         }
     }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/game/Scorer.java

@@ -13,13 +13,14 @@ import com.badlogic.gdx.utils.Align;
 
 import io.github.lonamiwebs.klooni.Klooni;
 
+// Used to keep track of the current and maximum
+// score, and to also display it on the screen.
+// The maximum score is NOT saved automatically.
 public class Scorer {
 
-    private int currentScore, maxScore;
+    //region Members
-    private boolean newRecord;
 
-    private float shownScore; // To interpolate between shown score -> real score
+    private int currentScore, maxScore;
-    private final int boardSize;
 
     final Label currentScoreLabel;
     final Label maxScoreLabel;
@@ -27,10 +28,20 @@ public class Scorer {
     final Texture cupTexture;
     final Rectangle cupArea;
 
-    public Scorer(GameLayout layout, int boardSize) {
+    // If the currentScore beat the maxScore, then we have a new record
+    private boolean newRecord;
+
+    // To interpolate between shown score -> real score
+    private float shownScore;
+
+    //endregion
+
+    //region Constructor
+
+    // The board size is required when calculating the score
+    public Scorer(GameLayout layout) {
         currentScore = 0;
         maxScore = Klooni.getMaxScore();
-        this.boardSize = boardSize;
 
         cupTexture = new Texture(Gdx.files.internal("ui/cup.png"));
         cupArea = new Rectangle();
@@ -48,19 +59,39 @@ public class Scorer {
         layout.update(this);
     }
 
-    public void addPieceScore(int areaPut) {
+    //endregion
-        addScore(areaPut);
-    }
 
-    public void addBoardScore(int stripsCleared) {
+    //region Private methods
-        addScore(calculateClearScore(stripsCleared));
-    }
 
     private void addScore(int score) {
         currentScore += score;
         newRecord = currentScore > maxScore;
     }
 
+    // The original game seems to work as follows:
+    // If < 1 were cleared, score = 0
+    // If = 1  was cleared, score = cells cleared
+    // If > 1 were cleared, score = cells cleared + score(cleared - 1)
+    private int calculateClearScore(int stripsCleared, int boardSize) {
+        if (stripsCleared < 1) return 0;
+        if (stripsCleared == 1) return boardSize;
+        else return boardSize * stripsCleared + calculateClearScore(stripsCleared - 1, boardSize);
+    }
+
+    //endregion
+
+    //region Public methods
+
+    // Adds the score a given piece would give
+    public void addPieceScore(int areaPut) {
+        addScore(areaPut);
+    }
+
+    // Adds the score given by the board, this is, the count of cleared strips
+    public void addBoardScore(int stripsCleared, int boardSize) {
+        addScore(calculateClearScore(stripsCleared, boardSize));
+    }
+
     public int getCurrentScore() {
         return currentScore;
     }
@@ -71,16 +102,6 @@ public class Scorer {
         }
     }
 
-    int calculateClearScore(int stripsCleared) {
-        // The original game seems to work as follows:
-        // If < 1 were cleared, score = 0
-        // If = 1  was cleared, score = cells cleared
-        // If > 1 were cleared, score = cells cleared + score(cleared - 1)
-        if (stripsCleared < 1) return 0;
-        if (stripsCleared == 1) return boardSize;
-        else return boardSize * stripsCleared + calculateClearScore(stripsCleared - 1);
-    }
-
     public void draw(SpriteBatch batch) {
         int roundShown = MathUtils.round(shownScore);
         if (roundShown != currentScore) {
@@ -93,4 +114,6 @@ public class Scorer {
         currentScoreLabel.draw(batch, 1f);
         maxScoreLabel.draw(batch, 1f);
     }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/screens/CustomizeScreen.java

@@ -22,15 +22,29 @@ import io.github.lonamiwebs.klooni.actors.SoftButton;
 import io.github.lonamiwebs.klooni.actors.ThemeCard;
 import io.github.lonamiwebs.klooni.game.GameLayout;
 
-public class CustomizeScreen implements Screen {
+// Screen where the user can customize the look and feel of the game
-    private Klooni game;
+class CustomizeScreen implements Screen {
 
+    //region Members
+
+    private Klooni game;
     private Stage stage;
 
-    public CustomizeScreen(Klooni aGame, final Screen lastScreen) {
+    //endregion
+
+    //region Static members
+
+    // As the examples show on the LibGdx wiki
+    private static final float minDelta = 1/30f;
+
+    //endregion
+
+    //region Constructor
+
+    CustomizeScreen(Klooni game, final Screen lastScreen) {
         final GameLayout layout = new GameLayout();
 
-        game = aGame;
+        this.game = game;
         stage = new Stage();
 
         Table table = new Table();
@@ -45,7 +59,7 @@ public class CustomizeScreen implements Screen {
         backButton.addListener(new ChangeListener() {
             @Override
             public void changed(ChangeEvent event, Actor actor) {
-                game.setScreen(lastScreen);
+                CustomizeScreen.this.game.setScreen(lastScreen);
                 dispose();
             }
         });
@@ -59,7 +73,7 @@ public class CustomizeScreen implements Screen {
             @Override
             public void changed(ChangeEvent event, Actor actor) {
                 Klooni.toggleSound();
-                soundButton.getStyle().imageUp = game.skin.getDrawable(
+                soundButton.getStyle().imageUp = CustomizeScreen.this.game.skin.getDrawable(
                         Klooni.soundsEnabled() ? "sound_on_texture" : "sound_off_texture");
             }
         });
@@ -86,8 +100,9 @@ public class CustomizeScreen implements Screen {
         optionsGroup.addActor(webButton);
 
         table.add(new ScrollPane(optionsGroup)).pad(20, 4, 12, 4);
-        table.row();
 
+        // Load all the available themes
+        table.row();
         VerticalGroup themesGroup = new VerticalGroup();
         for (Theme theme : Theme.getThemes()) {
             final ThemeCard card = new ThemeCard(layout, theme);
@@ -105,13 +120,15 @@ public class CustomizeScreen implements Screen {
         table.add(new ScrollPane(themesGroup)).expand().fill();
     }
 
+    //endregion
+
+    //region Public methods
+
     @Override
     public void show() {
         Gdx.input.setInputProcessor(stage);
     }
 
-    private static final float minDelta = 1/30f;
-
     @Override
     public void render(float delta) {
         Klooni.theme.glClearBackground();
@@ -130,23 +147,23 @@ public class CustomizeScreen implements Screen {
         stage.getViewport().update(width, height, true);
     }
 
-    @Override
-    public void pause() {
-
-    }
-
-    @Override
-    public void resume() {
-
-    }
-
-    @Override
-    public void hide() {
-
-    }
-
     @Override
     public void dispose() {
         stage.dispose();
     }
+
+    //endregion
+
+    //region Empty methods
+
+    @Override
+    public void pause() { }
+
+    @Override
+    public void resume() { }
+
+    @Override
+    public void hide() { }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/screens/GameScreen.java

@@ -15,41 +15,58 @@ import io.github.lonamiwebs.klooni.game.Piece;
 import io.github.lonamiwebs.klooni.game.PieceHolder;
 import io.github.lonamiwebs.klooni.game.Scorer;
 
-public class GameScreen implements Screen, InputProcessor {
+// Main game screen. Here the board, piece holder and score are shown
+class GameScreen implements Screen, InputProcessor {
+
+    //region Members
 
     private final Scorer scorer;
-    private Board board;
+    private final Board board;
-    private PieceHolder holder;
+    private final PieceHolder holder;
 
-    private final GameLayout layout;
+    private final SpriteBatch batch;
     private final Sound gameOverSound;
 
-    private SpriteBatch batch;
-
     private final PauseMenuStage pauseMenu;
 
+    //endregion
+
+    //region Static members
+
+    private final static int BOARD_SIZE = 10;
+    private final static int HOLDER_PIECE_COUNT = 3;
+
+    //endregion
+
+    //region Constructor
+
     GameScreen(final Klooni game) {
         batch = new SpriteBatch();
 
-        layout = new GameLayout();
+        final GameLayout layout = new GameLayout();
-
+        scorer = new Scorer(layout);
-        scorer = new Scorer(layout, 10);
+        board = new Board(layout, BOARD_SIZE);
-        board = new Board(layout, 10);
+        holder = new PieceHolder(layout, HOLDER_PIECE_COUNT, board.cellSize);
-        holder = new PieceHolder(layout, 3, board.cellSize);
         pauseMenu = new PauseMenuStage(layout, game, scorer);
 
         gameOverSound = Gdx.audio.newSound(Gdx.files.internal("sound/game_over.mp3"));
     }
 
+    //endregion
+
+    //region Private methods
+
+    // If no piece can be put, then it is considered to be game over
     private boolean isGameOver() {
-        for (Piece piece : holder.getAvailablePieces()) {
+        for (Piece piece : holder.getAvailablePieces())
-            if (board.canPutPiece(piece)) {
+            if (board.canPutPiece(piece))
                 return false;
-            }
+
-        }
         return true;
     }
 
+    //endregion
+
     //region Screen
 
     @Override
@@ -80,26 +97,6 @@ public class GameScreen implements Screen, InputProcessor {
         }
     }
 
-    @Override
-    public void resize(int width, int height) {
-
-    }
-
-    @Override
-    public void pause() {
-
-    }
-
-    @Override
-    public void resume() {
-
-    }
-
-    @Override
-    public void hide() {
-
-    }
-
     @Override
     public void dispose() {
         pauseMenu.dispose();
@@ -109,11 +106,6 @@ public class GameScreen implements Screen, InputProcessor {
 
     //region Input
 
-    @Override
-    public boolean keyDown(int keycode) {
-        return false;
-    }
-
     @Override
     public boolean keyUp(int keycode) {
         if (keycode == Input.Keys.P || keycode == Input.Keys.BACK) // Pause
@@ -122,11 +114,6 @@ public class GameScreen implements Screen, InputProcessor {
         return false;
     }
 
-    @Override
-    public boolean keyTyped(char character) {
-        return false;
-    }
-
     @Override
     public boolean touchDown(int screenX, int screenY, int pointer, int button) {
         return holder.pickPiece();
@@ -141,7 +128,7 @@ public class GameScreen implements Screen, InputProcessor {
 
         if (action == PieceHolder.ON_BOARD_DROP) {
             scorer.addPieceScore(area);
-            scorer.addBoardScore(board.clearComplete());
+            scorer.addBoardScore(board.clearComplete(), board.cellCount);
 
             // After the piece was put, check if it's game over
             if (isGameOver()) {
@@ -153,6 +140,32 @@ public class GameScreen implements Screen, InputProcessor {
         return true;
     }
 
+    //endregion
+
+    //region Unused methods
+
+    @Override
+    public void resize(int width, int height) { }
+
+    @Override
+    public void pause() { }
+
+    @Override
+    public void resume() { }
+
+    @Override
+    public void hide() { }
+
+    @Override
+    public boolean keyDown(int keycode) {
+        return false;
+    }
+
+    @Override
+    public boolean keyTyped(char character) {
+        return false;
+    }
+
     @Override
     public boolean touchDragged(int screenX, int screenY, int pointer) {
         return false;

core/src/io/github/lonamiwebs/klooni/screens/MainMenuScreen.java

@@ -4,7 +4,6 @@ import com.badlogic.gdx.Gdx;
 import com.badlogic.gdx.Input;
 import com.badlogic.gdx.Screen;
 import com.badlogic.gdx.graphics.GL20;
-import com.badlogic.gdx.graphics.g2d.SpriteBatch;
 import com.badlogic.gdx.scenes.scene2d.Actor;
 import com.badlogic.gdx.scenes.scene2d.InputListener;
 import com.badlogic.gdx.scenes.scene2d.Stage;
@@ -15,16 +14,28 @@ import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
 import io.github.lonamiwebs.klooni.Klooni;
 import io.github.lonamiwebs.klooni.actors.SoftButton;
 
+// Main menu screen, presenting some options (play, customize…)
 public class MainMenuScreen extends InputListener implements Screen {
-    private Klooni game;
 
-    Stage stage;
+    //region Members
-    SpriteBatch batch;
 
-    public MainMenuScreen(Klooni aGame) {
+    private final Klooni game;
-        game = aGame;
+    private final Stage stage;
+
+    //endregion
+
+    //region Static members
+
+    // As the examples show on the LibGdx wiki
+    private static final float minDelta = 1/30f;
+
+    //endregion
+
+    //region Constructor
+
+    public MainMenuScreen(Klooni game) {
+        this.game = game;
 
-        batch = new SpriteBatch();
         stage = new Stage();
 
         Table table = new Table();
@@ -35,7 +46,7 @@ public class MainMenuScreen extends InputListener implements Screen {
         final ImageButton playButton = new SoftButton(0, "play_texture");
         playButton.addListener(new ChangeListener() {
             public void changed (ChangeEvent event, Actor actor) {
-                game.setScreen(new GameScreen(game));
+                MainMenuScreen.this.game.setScreen(new GameScreen(MainMenuScreen.this.game));
                 dispose();
             }
         });
@@ -55,20 +66,22 @@ public class MainMenuScreen extends InputListener implements Screen {
         final ImageButton paletteButton = new SoftButton(3, "palette_texture");
         paletteButton.addListener(new ChangeListener() {
             public void changed (ChangeEvent event, Actor actor) {
-                game.setScreen(new CustomizeScreen(game, game.getScreen()));
+                MainMenuScreen.this.game.setScreen(new CustomizeScreen(MainMenuScreen.this.game, MainMenuScreen.this.game.getScreen()));
                 // Don't dispose because then it needs to take us to the previous screen
             }
         });
         table.add(paletteButton).space(16);
     }
 
+    //endregion
+
+    //region Screen
+
     @Override
     public void show() {
         Gdx.input.setInputProcessor(stage);
     }
 
-    private static final float minDelta = 1/30f;
-
     @Override
     public void render(float delta) {
         Klooni.theme.glClearBackground();
@@ -86,23 +99,23 @@ public class MainMenuScreen extends InputListener implements Screen {
         stage.getViewport().update(width, height, true);
     }
 
-    @Override
-    public void pause() {
-
-    }
-
-    @Override
-    public void resume() {
-
-    }
-
-    @Override
-    public void hide() {
-
-    }
-
     @Override
     public void dispose() {
         stage.dispose();
     }
+
+    //endregion
+
+    //region Unused methods
+
+    @Override
+    public void pause() { }
+
+    @Override
+    public void resume() { }
+
+    @Override
+    public void hide() { }
+
+    //endregion
 }

core/src/io/github/lonamiwebs/klooni/screens/PauseMenuStage.java

@@ -21,7 +21,11 @@ import io.github.lonamiwebs.klooni.actors.SoftButton;
 import io.github.lonamiwebs.klooni.game.GameLayout;
 import io.github.lonamiwebs.klooni.game.Scorer;
 
-public class PauseMenuStage extends Stage {
+// The pause stage is not a whole screen but rather a menu
+// which can be overlaid on top of another screen
+class PauseMenuStage extends Stage {
+
+    //region Members
 
     private InputProcessor lastInputProcessor;
     private boolean shown;
@@ -32,8 +36,13 @@ public class PauseMenuStage extends Stage {
     private final Band band;
     private final Scorer scorer;
 
-    public PauseMenuStage(final GameLayout layout, final Klooni game, final Scorer aScorer) {
+    //endregion
-        scorer = aScorer;
+
+    //region Constructor
+
+    // We need the score to save the maximum score if a new record was beaten
+    PauseMenuStage(final GameLayout layout, final Klooni game, final Scorer scorer) {
+        this.scorer = scorer;
 
         shapeRenderer = new ShapeRenderer(20); // 20 vertex seems to be enough for a rectangle
 
@@ -43,7 +52,7 @@ public class PauseMenuStage extends Stage {
 
         // Current and maximum score band.
         // Do not add it to the table not to over-complicate things.
-        band = new Band(layout, scorer, Color.SKY);
+        band = new Band(layout, this.scorer, Color.SKY);
         addActor(band);
 
         // Home screen button
@@ -84,7 +93,7 @@ public class PauseMenuStage extends Stage {
         });
 
         // Continue playing OR share (if game over) button
-        // TODO Enable both actions for this button
+        // TODO Enable both actions for this button? Or leave play?
         final ImageButton playButton = new SoftButton(2, "play_texture");
         table.add(playButton).space(16);
 
@@ -95,22 +104,12 @@ public class PauseMenuStage extends Stage {
         });
     }
 
-    void show(final boolean gameOver) {
+    //endregion
-        scorer.saveScore();
 
-        lastInputProcessor = Gdx.input.getInputProcessor();
+    //region Private methods
-        Gdx.input.setInputProcessor(this);
-        shown = true;
-        hiding = false;
 
-        if (gameOver)
+    // Hides the pause menu, setting back the previous input processor
-            band.setGameOver();
+    private void hide() {
-
-        addAction(Actions.moveTo(0, Gdx.graphics.getHeight()));
-        addAction(Actions.moveTo(0, 0, 0.75f, Interpolation.swingOut));
-    }
-
-    public void hide() {
         shown = false;
         hiding = true;
         Gdx.input.setInputProcessor(lastInputProcessor);
@@ -126,19 +125,44 @@ public class PauseMenuStage extends Stage {
         ));
     }
 
-    public boolean isShown() {
+    //endregion
+
+    //region Package local methods
+
+    // Shows the pause menu, indicating whether it's game over or not
+    void show(final boolean gameOver) {
+        scorer.saveScore();
+
+        // Save the last input processor so then we can return the handle to it
+        lastInputProcessor = Gdx.input.getInputProcessor();
+        Gdx.input.setInputProcessor(this);
+        shown = true;
+        hiding = false;
+
+        if (gameOver)
+            band.setGameOver();
+
+        addAction(Actions.moveTo(0, Gdx.graphics.getHeight()));
+        addAction(Actions.moveTo(0, 0, 0.75f, Interpolation.swingOut));
+    }
+
+    boolean isShown() {
         return shown;
     }
 
-    public boolean isHiding() {
+    boolean isHiding() {
         return hiding;
     }
 
+    //endregion
+
+    //region Public methods
+
     @Override
     public void draw() {
+        if (shown) {
             // Draw an overlay rectangle with not all the opacity
             // This is the only place where ShapeRenderer is OK because the batch hasn't started
-        if (shown) {
             Gdx.gl.glEnable(GL20.GL_BLEND);
             shapeRenderer.begin(ShapeRenderer.ShapeType.Filled);
             shapeRenderer.setColor(1f, 1f, 1f, 0.3f);
@@ -156,4 +180,6 @@ public class PauseMenuStage extends Stage {
 
         return super.keyUp(keyCode);
     }
+
+    //endregion
 }