behavior_field_visitor.h

#pragma once
 
#include <cstddef>
#include <string>
#include <type_traits>
#include <utility>
 
#include <glm/glm.hpp>
#include <glm/gtc/quaternion.hpp>
 
#include "resource/asset_type.h"
 
namespace Vkm::Engine {

class BehaviorFieldVisitor {
    public:
        BehaviorFieldVisitor() = default;
        virtual ~BehaviorFieldVisitor() = default;
 
        BehaviorFieldVisitor(const BehaviorFieldVisitor& other) = delete;
        BehaviorFieldVisitor& operator=(const BehaviorFieldVisitor& other) = delete;
 
        BehaviorFieldVisitor(BehaviorFieldVisitor && other) = delete;
        BehaviorFieldVisitor& operator=(BehaviorFieldVisitor && other) = delete;
 
    public:
        virtual void field(const char* name, float& value)       = 0;
        virtual void field(const char* name, int& value)         = 0;
        virtual void field(const char* name, bool& value)        = 0;
        virtual void field(const char* name, glm::vec2& value)   = 0;
        virtual void field(const char* name, glm::vec3& value)   = 0;
        virtual void field(const char* name, glm::vec4& value)   = 0;
        virtual void field(const char* name, glm::quat& value)   = 0;
        virtual void field(const char* name, std::string& value) = 0;

        virtual void enumField(const char* name, int& index, const char* const* names, std::size_t count) = 0;

        virtual void assetField(const char* name, std::string& assetName, AssetType type) = 0;

        virtual bool beginStruct(const char* name) = 0;

        virtual void endStruct() = 0;
};

template<typename V, typename = void>
inline constexpr bool VISITOR_SUPPORTS_FIELD = false;
 
template<typename V>
inline constexpr bool VISITOR_SUPPORTS_FIELD<
    V,
    std::void_t<decltype(
        std::declval<BehaviorFieldVisitor&>().field(std::declval<const char*>(), std::declval<V&>())
    )>
> = true;
 
} // namespace Vkm::Engine