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TechTreeImproved.cpp 3.8 KiB
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  • #include "TechTreeImproved.h"
    
    using json = nlohmann::json;
    
    TechTreeImproved::TechTreeImproved() { }
    
    sc2::UNIT_TYPEID string_to_id(const std::string & str)
    {
        return static_cast<sc2::UNIT_TYPEID>(std::stoi(str));
    }
    
    std::string id_to_string(int id)
    {
        return sc2::UnitTypeToName(static_cast<sc2::UNIT_TYPEID>(id));
    }
    
    void add_requirement(json & requirement, BuildAlternative & alternative)
    {
        std::string type = requirement["type"];
        if (type == "and")
        {
            for (auto & subrequirement : requirement["operands"])
            {
                add_requirement(subrequirement, alternative);
            }
        }
        else if (type == "unitCount")
        {
            if (requirement["state"] == "CompleteOnlyAtUnit")
            {
                for (auto & unit : requirement["unit"])
                {
                    //std::cout << "Addon: " << sc2::UnitTypeToName(static_cast<sc2::UNIT_TYPEID>(unit)) << " (" << unit << ")" << std::endl;
                    alternative.addons_needed.push_back(static_cast<sc2::UNIT_TYPEID>(unit));
                }
            }
            else if (requirement["state"] == "CompleteOnly")
            {
                for (auto & unit : requirement["unit"])
                {
                    //std::cout << "Just building: " << sc2::UnitTypeToName(static_cast<sc2::UNIT_TYPEID>(unit)) << " (" << unit << ")" << std::endl;
                    alternative.buildings_needed.push_back(static_cast<sc2::UNIT_TYPEID>(unit));
                }
            }
            else
            {
                //std::cout << "Unsupported" << std::endl;
                //std::cout << requirement << std::endl;
            }
        }
    }
    
    BuildAlternative parse_build_alternative(json & build_item)
    {
        BuildAlternative alternative{ build_item["unit"] };
    
        if (build_item.find("requires") != build_item.end())
        {
            //std::cout << "Building unit: " << id_to_string(build_item["unit"]) << " requires" << std::endl;
            auto & requires = build_item["requires"][0];
            add_requirement(requires, alternative);
        }
        return alternative;
    }
    
    std::pair<sc2::UNIT_TYPEID, std::vector<BuildAlternative>> parse_unit(json::iterator it)
    {
        sc2::UNIT_TYPEID id = string_to_id(it.key());
        std::string name = sc2::UnitTypeToName(id);
        std::vector<BuildAlternative> build_alternatives;
    
        if (it.value().find("builds") != it.value().end())
        {
            auto & builds = it.value()["builds"];
            for (auto & build_item : builds)
            {
                BuildAlternative build_alternative = parse_build_alternative(build_item);
                build_alternatives.push_back(build_alternative);
            }
        }
        return { id, build_alternatives };
    }
    
    void TechTreeImproved::LoadData() {
        // TODO: Do not hardcode this. Use the latest json available.
        std::ifstream i("techtree.json");
        json j;
        i >> j;
    
        for (auto & race : j)
        {
            for (json::iterator it = race.begin(); it != race.end(); ++it)
            {
                auto pair = parse_unit(it);
                data[pair.first] = pair.second;
            }
        }
    
        std::cout << "Done" << std::endl;
    }
    
    const std::vector<BuildAlternative> & TechTreeImproved::GetBuildAlternatives(sc2::UNIT_TYPEID unit) const
    {
        if (data.count(unit) > 0)
        {
            return data.at(unit);
        }
        else
        {
            std::cout << "No information about unit type " << sc2::UnitTypeToName(unit) << " (" << static_cast<int>(unit) << ")" << std::endl;
            return {};
        }
    }
    
    std::vector<std::pair<sc2::UNIT_TYPEID, BuildAlternative>> TechTreeImproved::HowToBuild(sc2::UNIT_TYPEID unit_type)
    {
        std::vector<std::pair<sc2::UNIT_TYPEID, BuildAlternative>> alternatives;
        for (auto & pair : data)
        {
            for (const BuildAlternative & alternative : pair.second)
            {
                if (alternative.type == unit_type)
                {
                    alternatives.push_back({ pair.first, alternative });
                }
            }
        }
        return alternatives;
    }