EvpackSceneTemplateLoader.h

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#pragma once
#include "common/Export.h"
 
#include "asset/EvpackResourceReader.h"
#include "scene/NodeDesc.h"
 
namespace eve::asset_scene {
 
struct SceneTemplateLoadLimits {
    std::uint32_t maximumNodes = 1'000'000;
    std::uint32_t maximumDepth = 4096;
    std::uint64_t maximumDecodedBytes = 256ull * 1024ull * 1024ull;
};
 
struct SceneMeshBinding {
    SceneObjectId object;
    AssetRef      mesh;
    AssetRef      material;
    bool          enabled = true;
    bool          castShadows = true;
    bool          receiveShadows = true;
};
 
struct LoadedSceneTemplate {
    AssetRef                      asset;
    std::string                   sourceGuid;
    scene::NodeDesc               root;
    asset::EvpackVariantSelection variant;
    std::vector<SceneMeshBinding> renderers;
};
 
class EVENGINE_API_BACKENDS EvpackSceneTemplateLoader {
public:
    explicit EvpackSceneTemplateLoader(const asset::EvpackResourceReader& reader) noexcept
        : reader_(reader) {}
 
    [[nodiscard]] Result<LoadedSceneTemplate> load(
        const AssetRef& sceneTemplate, const asset::EvpackCapabilities& capabilities,
        const SceneTemplateLoadLimits& limits = {}) const;
 
private:
    const asset::EvpackResourceReader& reader_;
};
 
}  // namespace eve::asset_scene