Initial commit

src/Library/GrowthRates/GrowthRate.cpp

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+#include "GrowthRate.hpp"

src/Library/GrowthRates/GrowthRate.hpp

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+#ifndef CREATURELIB_GROWTHRATE_HPP
+#define CREATURELIB_GROWTHRATE_HPP
+
+#include <cstdint>
+
+namespace CreatureLib::Library {
+    class GrowthRate {
+    public:
+        [[nodiscard]] virtual uint8_t CalculateLevel(uint32_t experience) const = 0;
+        [[nodiscard]] virtual uint32_t CalculateExperience(uint8_t level) const = 0;
+    };
+}
+
+#endif //CREATURELIB_GROWTHRATE_HPP

src/Library/GrowthRates/GrowthRateLibrary.cpp

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+#include "GrowthRateLibrary.hpp"
+
+uint8_t CreatureLib::Library::GrowthRateLibrary::CalculateLevel(const std::string &growthRate, uint32_t experience) const {
+    return _growthRates.at(growthRate)->CalculateLevel(experience);
+}
+
+uint32_t CreatureLib::Library::GrowthRateLibrary::CalculateExperience(const std::string &growthRate, uint8_t level) const {
+    return _growthRates.at(growthRate)->CalculateExperience(level);
+}

src/Library/GrowthRates/GrowthRateLibrary.hpp

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+#ifndef CREATURELIB_GROWTHRATELIBRARY_HPP
+#define CREATURELIB_GROWTHRATELIBRARY_HPP
+
+#include <cstdint>
+#include <string>
+#include <unordered_map>
+#include "GrowthRate.hpp"
+
+namespace CreatureLib::Library{
+    class GrowthRateLibrary {
+    private:
+        std::unordered_map<std::string, GrowthRate*> _growthRates;
+    public:
+        [[nodiscard]] uint8_t CalculateLevel(const std::string& growthRate, uint32_t experience) const;
+        [[nodiscard]] uint32_t CalculateExperience(const std::string& growthRate, uint8_t level) const;
+    };
+}
+
+#endif //CREATURELIB_GROWTHRATELIBRARY_HPP