Core game is finished

Solitaire/main.cpp

@@ -212,6 +212,11 @@ class Solitaire : public olc::PixelGameEngine
 		previousCardInteraction.clear();
 	}
 
+	bool IsOppositeColor(Suit s1, Suit s2) {
+		return (s1 == HEART || s1 == DIAMOND) && (s2 == CLUB || s2 == SPADE) ||
+			(s1 == CLUB || s1 == SPADE) && (s2 == HEART || s2 == DIAMOND);
+	}
+
 	void UpdateCardSlots() {
 		if (GetMouse(0).bPressed&&MouseOver(PlayDeck)) {
 			if (PlayDeck.faceDownCards.size() > 0) {
@@ -306,7 +311,24 @@ class Solitaire : public olc::PixelGameEngine
 			}
 			for (int i = 0; i < Field.size(); i++) {
 				if (MouseOver(Field[i])) {
-
+					if (Field[i].faceDownCards.size() + Field[i].faceUpCards.size() == 0 && draggedCard[0].number==13) {
+						//The column is empty and the top-most card is a King.
+						for (int j = 0; j < draggedCard.size(); j++) {
+							Field[i].faceUpCards.push_back(draggedCard[j]);
+						}
+						DeleteDraggedCard();
+						goto draggedCardSuccess;
+					} else
+					if (Field[i].faceUpCards.size() > 0 && IsOppositeColor(draggedCard[0].s, Field[i].faceUpCards[Field[i].faceUpCards.size() - 1].s)&&
+						draggedCard[0].number==Field[i].faceUpCards[Field[i].faceUpCards.size() - 1].number-1) {
+						//If the column has face up cards and the top dragged card's suit is the opposite color of the last face up card's suit
+						// and the dragged card's number is 1 less than the last face up card's number.
+						for (int j = 0; j < draggedCard.size(); j++) {
+							Field[i].faceUpCards.push_back(draggedCard[j]);
+						}
+						DeleteDraggedCard();
+						goto draggedCardSuccess;
+					}
 				}
 			}
 			ResetDraggedCard();
@@ -354,10 +376,6 @@ class Solitaire : public olc::PixelGameEngine
 		diamond_spr.Load("assets/diamond.png");
 		heart_spr.Load("assets/heart.png");
 		spade_spr.Load("assets/spade.png");
-		Home[0].faceUpCards.push_back({ SPADE,1 });
-		Home[0].faceUpCards.push_back({ SPADE,2 });
-		Field[3].faceUpCards.push_back({ SPADE,3 });
-		Field[3].faceUpCards.push_back({ SPADE,4 });
 		for (int i = 0; i < Field.size(); i++) {
 			for (int j = 0; j < i; j++) {
 				Field[i].faceDownCards.push_back(DrawCard());