Completed day2

src/days/day02.cpp

@@ -1,11 +1,108 @@
 #include "../aoc2022.h"
 
+#define WIN 6
+#define DRAW 3
+#define LOSS 0
+
+enum EGameMoves {
+	eRock = 1,
+	ePaper = 2,
+	eScissors = 3
+};
+
+struct SGameMove {
+	EGameMoves move, losesTo, winsTo;
+};
+
+enum ERules {
+	eTheirRules,
+	eMyRules
+};
+
 template <typename Output>
 struct SDay02 : public SDay<Output> {
 	//Class constructor
 	using SDay<Output>::SDay;
 
+	//Map to store the collection of alises and plays
+	std::map<char, SGameMove*> pairs;
+	std::map<EGameMoves, EGameMoves> losingMoves;
+
+	SGameMove rock{ eRock, ePaper, eScissors };
+	SGameMove paper{ ePaper, eScissors, eRock };
+	SGameMove scissors{ eScissors, eRock, ePaper };
+
 	//Solutions to both days
-	Output part1() override final { return Output(); }
-	Output part2() override final { return Output(); }
+	Output part1() override final {
+		//'A' 'X' = rock and loses to paper
+		pairs['A'] = &rock;
+		pairs['X'] = &rock; // Means Lose
+		//'B' 'Y' = paper and loses to scissors
+		pairs['B'] = &paper;
+		pairs['Y'] = &paper; //Draw
+		//'C' 'Z' = scissors and loses to rock
+		pairs['C'] = &scissors;
+		pairs['Z'] = &scissors; //Win
+
+		return playGame(eTheirRules);
+	}
+	Output part2() override final { 
+		return playGame(eMyRules);
+	}
+
+	int theirRules(const SGameMove *player1, const SGameMove *player2) {
+
+		if (player1->losesTo == player2->move)
+		{//We Win
+			return (WIN + player2->move);
+		}
+
+		if (player1->move == player2->move)
+		{//We Draw
+			return (DRAW + player2->move);
+		}
+
+		//We Lose
+		return (LOSS + player2->move);
+	}
+
+	int myRules(const SGameMove *player1, const SGameMove *player2) {
+		if (player2->move == EGameMoves::eRock)
+		{//We must Lose
+			return (LOSS + player1->winsTo);
+		}
+		if (player2->move == EGameMoves::ePaper)
+		{//We must Draw
+			return (DRAW + player1->move);
+		}
+		//We must Win
+		return (WIN + player1->losesTo);
+	}
+
+	int playGame(ERules rules) {
+		this->input.clear();
+		this->input.seekg(0, std::ios::beg);
+		std::string line{ "" };
+		int score{ 0 };
+
+		SGameMove *player1, *player2;
+
+		while (std::getline(this->input, line))
+		{
+			player1 = pairs[line[0]];
+			player2 = pairs[line[2]];
+
+			if (rules == eTheirRules)
+			{//part1
+				score += theirRules(player1, player2);
+			}
+			else
+			{//part2
+				score += myRules(player1, player2);
+			}
+		}
+		return score;
+	}
+
 };
+