Store revealed state for the columns

CMakeLists.txt

@@ -24,6 +24,7 @@ qt_add_qml_module(appSolitare
         QML_FILES CardModel.qml
         SOURCES playingcard.h playingcard.cpp
         SOURCES gamestate.h gamestate.cpp
+        SOURCES columnslot.h columnslot.cpp
 )
 
 # Qt for iOS sets MACOSX_BUNDLE_GUI_IDENTIFIER automatically since Qt 6.1.

columnslot.cpp

@@ -0,0 +1,21 @@
+#include "columnslot.h"
+
+ColumnSlot::ColumnSlot(PlayingCard* card, bool revealed, QObject* parent)
+    : QObject(parent), m_card(card), m_revealed(revealed)
+{}
+
+PlayingCard* ColumnSlot::card() const {
+    return m_card;
+}
+
+bool ColumnSlot::isRevealed() const {
+    return m_revealed;
+}
+
+void ColumnSlot::reveal() {
+    if (m_revealed)
+        return;
+
+    m_revealed = true;
+    emit revealedChanged();
+}

columnslot.h

@@ -0,0 +1,29 @@
+#ifndef COLUMNSLOT_H
+#define COLUMNSLOT_H
+
+#include <QObject>
+#include "playingcard.h"
+
+class ColumnSlot : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(PlayingCard* card READ card CONSTANT)
+    Q_PROPERTY(bool revealed READ isRevealed NOTIFY revealedChanged)
+
+public:
+    explicit ColumnSlot(PlayingCard* card, bool revealed, QObject* parent = nullptr);
+
+    PlayingCard* card() const;
+
+    bool isRevealed() const;
+    void reveal();
+
+signals:
+    void revealedChanged();
+
+private:
+    PlayingCard* m_card;
+    bool m_revealed;
+};
+
+#endif // COLUMNSLOT_H

gamestate.cpp

@@ -1,5 +1,6 @@
 #include "gamestate.h"
 #include <random>
+#include <QDebug>
 
 GameState::GameState(QObject *parent)
     : QObject{parent}
@@ -11,7 +12,7 @@ GameState::GameState(QObject *parent)
 
     // Initialize the columns (7 piles)
     for (int i = 0; i < 7; ++i) {
-        m_columns.append(QList<PlayingCard*>());
+        m_columns.append(QList<ColumnSlot*>());
     }
 }
 
@@ -27,9 +28,17 @@ void GameState::dealCards()
     // Deal the cards into the columns
     int index = 0;
     for (int i = 0; i < 7; i++) {
+        QList<ColumnSlot*> column;
+
         // Deal exactly i+1 cards to the i-th column
-        m_columns[i] = deck.mid(index, i + 1);
-        index += i + 1;
+        for (int j = 0; j <= i; j++) {
+            bool revealed = (j == i);
+            ColumnSlot *col = new ColumnSlot(deck[index], revealed);
+            column.append(col);
+            index++;
+        }
+
+        m_columns[i] = column;
     }
 
     // Use the remaining cards as the draw pile
@@ -78,7 +87,8 @@ bool GameState::moveCardToColumn(int columnId)
         if (cardToMove->value() != PlayingCard::Value::King)
             return false;
 
-        m_columns[columnId].append(cardToMove);
+        ColumnSlot *col = new ColumnSlot(cardToMove, true);
+        m_columns[columnId].append(col);
         m_throwawayPile.removeLast();
 
         emit onThrowawayPileChanged();
@@ -87,7 +97,7 @@ bool GameState::moveCardToColumn(int columnId)
     }
 
     // We'll be comparing this card against the last card in the column
-    PlayingCard* columnCard = m_columns[columnId].last();
+    PlayingCard* columnCard = m_columns[columnId].last()->card();
 
     // This card's value must be one less than the card in the column
     if (cardToMove->value() != columnCard->value() - 1)
@@ -97,8 +107,10 @@ bool GameState::moveCardToColumn(int columnId)
     if (!PlayingCard::areOppositeColors(*cardToMove, *columnCard))
         return false;
 
-    m_columns[columnId].append(cardToMove);
+    ColumnSlot *col = new ColumnSlot(cardToMove, true);
+    m_columns[columnId].append(col);
     m_throwawayPile.removeLast();
+    ensureColumnRevealed(columnId);
 
     emit onThrowawayPileChanged();
     emit onColumnsChanged();
@@ -137,15 +149,16 @@ bool GameState::moveColumnCardToFoundation(int columnId, PlayingCard::Suit found
     }
 
     // We'll be moving the top card in the column (maybe)
-    PlayingCard *cardToMove = m_columns[columnId].first();
+    PlayingCard *cardToMove = m_columns[columnId].first()->card();
 
     // Try moving the card into the foundation
     if (!tryMoveCardToFoundation(foundationId, cardToMove))
         return false;
 
     // We succeeded, the card is now in the appropriate foundation pile,
-    // let's remove the card from the column.
+    // let's remove the column slot.
     m_columns[columnId].removeFirst();
+    ensureColumnRevealed(columnId);
 
     emit onColumnsChanged();
     return true;
@@ -183,6 +196,25 @@ bool GameState::tryMoveCardToFoundation(PlayingCard::Suit foundationId, PlayingC
     return true;
 }
 
+void GameState::ensureColumnRevealed(int columnId)
+{
+    assert(columnId >= 0 && columnId < 7);
+
+    // Nothing to reveal
+    if (m_columns[columnId].isEmpty())
+        return;
+
+    // Get the top column slot
+    ColumnSlot *col = m_columns[columnId].first();
+
+    // If it's already revealed, there's nothing to do
+    if (col->isRevealed())
+        return;
+
+    // First slot in the column must always be revealed, reveal it
+    col->reveal();
+}
+
 QList<PlayingCard *> GameState::drawPile() const
 {
     return m_drawPile;
@@ -193,7 +225,7 @@ QList<PlayingCard *> GameState::throwawayPile() const
     return m_throwawayPile;
 }
 
-QList<QList<PlayingCard *> > GameState::columns() const
+QList<QList<ColumnSlot *> > GameState::columns() const
 {
     return m_columns;
 }

gamestate.h

@@ -3,13 +3,14 @@
 
 #include <QObject>
 #include "playingcard.h"
+#include "columnslot.h"
 
 class GameState : public QObject
 {
     Q_OBJECT
     Q_PROPERTY(QList<PlayingCard*> drawPile READ drawPile NOTIFY onDrawPileChanged)
     Q_PROPERTY(QList<PlayingCard*> throwawayPile READ throwawayPile NOTIFY onThrowawayPileChanged)
-    Q_PROPERTY(QList<QList<PlayingCard*>> columns READ columns NOTIFY onColumnsChanged)
+    Q_PROPERTY(QList<QList<ColumnSlot*>> columns READ columns NOTIFY onColumnsChanged)
     Q_PROPERTY(QList<QList<PlayingCard*>> foundation READ foundation NOTIFY onFoundationChanged)
 
 public:
@@ -17,7 +18,7 @@ public:
 
     QList<PlayingCard*> drawPile() const;
     QList<PlayingCard*> throwawayPile() const;
-    QList<QList<PlayingCard*>> columns() const;
+    QList<QList<ColumnSlot*>> columns() const;
     QList<QList<PlayingCard*>> foundation() const;
 
     void dealCards();
@@ -35,10 +36,11 @@ signals:
 private:
     QList<PlayingCard*> m_drawPile;
     QList<PlayingCard*> m_throwawayPile;
-    QList<QList<PlayingCard*>> m_columns;
+    QList<QList<ColumnSlot*>> m_columns;
     QList<QList<PlayingCard*>> m_foundation;
 
     bool tryMoveCardToFoundation(PlayingCard::Suit foundationId, PlayingCard* cardToMove);
+    void ensureColumnRevealed(int columnId);
 };
 
 #endif // GAMESTATE_H