UrbanGenerator.h

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#pragma once
#include "common/Export.h"
 
 
#include "procgen/urban/UrbanTypes.h"
 
#include <cstdint>
#include <random>
#include <string>
#include <vector>
 
namespace eve::procgen::urban {
 
class EVENGINE_API_DOMAINS UrbanGenerator {
public:
    explicit UrbanGenerator(UrbanOptions opts);
 
    bool generate(std::string* error = nullptr);
 
    const UrbanLayout& layout() const { return layout_; }
 
    struct GenState;
 
private:
    bool buildBoundaryStreets(GenState& st);
    bool generateLevel(GenState& st, int level, std::string* error);
    void splitAllParcels(GenState& st, std::vector<Polygon>& nextParcels);
    bool splitOneParcel(const GenState& st, const Polygon& poly, Polygon& outA, Polygon& outB) const;
    void removeShortEdges(GenState& st);
    void generateStreets(GenState& st, int level);
    void connectAccessToNetwork(GenState& st, const std::vector<int>& accessVertices,
                                const std::vector<char>* excludeTargets = nullptr);
    void reconnectStreetEnds(GenState& st, int level);
    void decomposeStreets(GenState& st);
    void finalizeStats(GenState& st);
 
    UrbanOptions opts_;
    UrbanLayout  layout_;
    std::mt19937 rng_;
};
 
}  // namespace eve::procgen::urban