TerrainDetailLayer.h

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#pragma once
#include <cstdint>
#include <memory>
#include <string>
#include <vector>
#include "common/Result.h"
 
namespace eve::procgen {
class Heightmap;
class TerrainWorldWorkspace;
struct TerrainDetailTile;
struct TerrainMultiTileReport;
struct TerrainStampSettings;
enum class TerrainDetailMode { Replace, Add, Remove };
struct TerrainDetailSettings {
    float             minimumFitness = 0.5F;
    float             fadeStart      = 0.6F;
    float             density        = 16;
    std::uint64_t     namespaceId    = 0;
    TerrainDetailMode mode           = TerrainDetailMode::Replace;
};
class EVENGINE_API_DOMAINS TerrainDetailLayer {
public:
    TerrainDetailLayer();
    ~TerrainDetailLayer();
    TerrainDetailLayer(TerrainDetailLayer&&) noexcept;
    TerrainDetailLayer& operator=(TerrainDetailLayer&&) noexcept;
    TerrainDetailLayer(const TerrainDetailLayer&);
    TerrainDetailLayer& operator=(const TerrainDetailLayer&);
    [[nodiscard]] Result<int> reset(int width, int height, int count = 0);
    [[nodiscard]] Result<int> apply(const Heightmap& fitness, const TerrainDetailSettings& settings, int32_t seed);
    [[nodiscard]] Result<int> sample(int x, int z) const;
    [[nodiscard]] Result<int> sampleResource(std::uint64_t namespaceId, int x, int z) const;
    [[nodiscard]] Result<int> clearResource(std::uint64_t namespaceId);
    int getWidth() const noexcept;
    int getHeight() const noexcept;
 
private:
    friend class TerrainWorldWorkspace;
    friend class TerrainMultiDetailWorkspace;
    friend EVENGINE_API_DOMAINS Result<TerrainMultiTileReport> applyTerrainDetailMultiTile(
        const std::vector<TerrainDetailTile>&, const Heightmap&, const TerrainDetailSettings&,
        const TerrainStampSettings&, std::int32_t, bool, const std::vector<std::string>&);
    struct Impl;
    std::unique_ptr<Impl> impl_;
};
}  // namespace eve::procgen