Allow buying "non-free" themes

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

@@ -165,13 +165,31 @@ public class Klooni extends Game {
         return false;
     }
 
+    public static boolean buyTheme(Theme theme) {
+        final float money = getRealMoney();
+        if (theme.getPrice() > money)
+            return false;
+
+        setMoney(money - theme.getPrice());
+
+        String bought = prefs.getString("boughtThemes", "");
+        if (bought.equals(""))
+            bought = theme.getName();
+        else
+            bought += ":" + theme.getName();
+
+        prefs.putString("boughtThemes", bought);
+
+        return true;
+    }
+
     public static void updateTheme(Theme newTheme) {
         prefs.putString("themeName", newTheme.getName()).flush();
         theme.update(newTheme.getName());
     }
 
     // Money related
-    public static void addMoney(int score) {
+    public static void addMoneyFromScore(int score) {
         setMoney(getRealMoney() + score * SCORE_TO_MONEY);
     }
 

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

@@ -23,6 +23,11 @@ public class MoneyBuyBand extends Table {
     private String infoText;
     private boolean showingTemp;
 
+    // The theme card that is going to be bought next. We can't
+    // only save the Theme because we need to tell the ThemeCard
+    // that it was bought so it can reflect the new theme status.
+    private ThemeCard toBuy;
+
     // Used to interpolate between strings
     private StringBuilder shownText;
 
@@ -52,6 +57,15 @@ public class MoneyBuyBand extends Table {
         add(infoLabel).expandX().left().padLeft(20);
 
         confirmButton = new SoftButton(0, "ok_texture");
+        confirmButton.addListener(new ChangeListener() {
+            @Override
+            public void changed(ChangeEvent event, Actor actor) {
+                if (toBuy != null)
+                    toBuy.performBuy();
+                showCurrentMoney();
+                hideBuyButtons();
+            }
+        });
         add(confirmButton).pad(8, 0, 8, 4);
         confirmButton.setVisible(false);
 
@@ -60,8 +74,7 @@ public class MoneyBuyBand extends Table {
             @Override
             public void changed(ChangeEvent event, Actor actor) {
                 showCurrentMoney();
-                confirmButton.setVisible(false);
+                hideBuyButtons();
-                cancelButton.setVisible(false);
             }
         });
         add(cancelButton).pad(8, 4, 8, 8);
@@ -79,6 +92,12 @@ public class MoneyBuyBand extends Table {
         setText("money: " + Klooni.getMoney());
     }
 
+    private void hideBuyButtons() {
+        confirmButton.setVisible(false);
+        cancelButton.setVisible(false);
+        toBuy = null;
+    }
+
     // Set the text to which the shown text will interpolate.
     // This will remove any temporary shown text or otherwise
     // it would mess up this new text.
@@ -137,13 +156,14 @@ public class MoneyBuyBand extends Table {
 
     // Asks the user to buy the given theme, or shows
     // that they don't have enough money to buy it
-    public void askBuy(final Theme toBuy) {
+    public void askBuy(final ThemeCard toBuy) {
-        if (toBuy.getPrice() > Klooni.getMoney()) {
+        if (toBuy.theme.getPrice() > Klooni.getMoney()) {
             setTempText("cannot buy!");
             confirmButton.setVisible(false);
             cancelButton.setVisible(false);
         }
         else {
+            this.toBuy = toBuy;
             setText("confirm?");
             confirmButton.setVisible(true);
             cancelButton.setVisible(true);

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

@@ -101,6 +101,20 @@ public class ThemeCard extends Actor {
             priceLabel.setText("buy for "+theme.getPrice());
     }
 
+    public void use() {
+        Klooni.updateTheme(theme);
+        usedThemeUpdated();
+    }
+
+    void performBuy() {
+        Klooni.buyTheme(theme);
+        use();
+    }
+
+    //endregion
+
+    //region Private methods
+
     // Used to determine the best foreground color (black or white) given a background color
     // Formula took from http://alienryderflex.com/hsp.html
     private static boolean shouldUseWhite(Color color) {

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

@@ -128,9 +128,9 @@ class CustomizeScreen implements Screen {
                 @Override
                 public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
                     if (Klooni.isThemeBought(card.theme))
-                        Klooni.updateTheme(card.theme);
+                        card.use();
                     else
-                        buyBand.askBuy(card.theme);
+                        buyBand.askBuy(card);
 
                     for (Actor a : themesGroup.getChildren()) {
                         ThemeCard c = (ThemeCard)a;

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

@@ -152,9 +152,9 @@ class GameScreen implements Screen, InputProcessor, BinSerializable {
     private void showPauseMenu() {
         // Calculate new money since the previous saving
         int nowScore = scorer.getCurrentScore();
-        int newMoney = nowScore - savedMoneyScore;
+        int newMoneyScore = nowScore - savedMoneyScore;
         savedMoneyScore = nowScore;
-        Klooni.addMoney(newMoney);
+        Klooni.addMoneyFromScore(newMoneyScore);
 
         // Show the pause menu
         pauseMenu.show(false);