Score.h

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#ifndef PACMAN_SCORE_H
#define PACMAN_SCORE_H
 
#include <fstream>
#include <utility>
#include <vector>
 
#include "Observer.h"
 
 
namespace logic {
 
    constexpr int SCORE_DECAY = 10; // 10 points per second
    constexpr int GHOST_POINTS = 200;
    constexpr int LEVEL_CLEAR_POINTS = 500;
    constexpr int BASE_COIN_POINTS = 10;
 

    struct ScoreEntry {
        std::string username;
        int score;

        ScoreEntry() : username(""), score(0) {}

        ScoreEntry(std::string username, const int score) : username(std::move(username)), score(score) {}
 

        bool operator<(const ScoreEntry& other) const {
            return score > other.score;
        }
    };
 
 
    class Score final : public Observer, public Subject {
    public:
        Score();

        ~Score() override;
 

        [[nodiscard]] std::vector<std::unique_ptr<ScoreEntry>>& getHighscores();

        [[nodiscard]] int getScore() const;

        [[nodiscard]] const ScoreEntry& getLastScore() const;
 

        void setUser(const std::string& username);

        void update(double dt);

        void addScoreEntry();

        void write() const;
 
    private:

        void createHighscoresFile() const;

        void update(Events event) override;
 
        std::string filename = "highscores.txt";
        std::vector<std::unique_ptr<ScoreEntry>> highscores;
        std::string username;
        ScoreEntry lastScore{};
 
        // While the World is restarting scores should not be decaying.
        bool paused = false;
        int score;
 
        double timeLastCoin = 0;
        double accumulator = 0;
 
        // Since ghost eating points are exponential when done in a row, I keep
        // track of the current amount.
        int ghostPoints = 0;
    };
}
 
#endif //PACMAN_SCORE_H