Mesh.h

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//   ____   __                  __  __
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// \/_/\ \/\ \ \___      __    \ \ \_\ \    ___   __  __    ____     __
//    \ \ \ \ \  _ `\  /'__`\   \ \  _  \  / __`\/\ \/\ \  /',__\  /'__`\
//     \ \ \ \ \ \ \ \/\  __/    \ \ \ \ \/\ \L\ \ \ \_\ \/\__, `\/\  __/
//      \ \_\ \ \_\ \_\ \____\    \ \_\ \_\ \____/\ \____/\/\____/\ \____\
//       \/_/  \/_/\/_/\/____/     \/_/\/_/\/___/  \/___/  \/___/  \/____/
 
 
#pragma once
 
#include <memory>
 
#include "VAO.h"
#include "IndexBuffer.h"
#include "VertexBuffer.h"
#include "Graphics/Vertex.h"
#include "System/json.h"
#include "Utility/Math/Vector4D.h"
 
struct AffineMatrix;
class Texture;
class Shader;
using Stream = sys::Json; // replace with whatever stream we are using

enum class uniforms : GLint
{
    world      = 0,
    projection = 1,
    view       = 2,
    multColor  = 3,
    uvOffset   = 4
};
 
 
class Mesh
{
public:
    Mesh(unsigned tilesWide = 1, unsigned tilesHigh = 1);
    ~Mesh();
    Mesh(const Mesh& other)                        = default;
    Mesh(Mesh&& other) noexcept                    = default;
    auto operator=(const Mesh& other) -> Mesh&     = default;
    auto operator=(Mesh&& other) noexcept -> Mesh& = default;
 
    auto activate() const -> void;
    auto deactivate() const -> void;
 
    auto draw(const Shader& shader, const Texture& texture) const -> void;
    auto draw(const Shader& shader) const -> void;
 
    auto load(Stream& stream) -> void;
    auto save(Stream& stream) const -> void;
 
    [[nodiscard]] auto name() const -> const std::string&;
 
    auto setName(const std::string& name) -> void;

    auto setFrame(unsigned newFrameNum) -> void;

    auto getFrame() const -> unsigned;
 
    auto incrementFrame() -> void;
    auto decrementFrame() -> void;

    auto getMaxFrames() const -> unsigned;
 
 
    friend auto to_json(json& j, const Mesh& a) -> void;
    friend auto from_json(const json& j, Mesh& a) -> void;
 
    auto showMenu() -> void;

    auto setObjectTransform(const AffineMatrix& transform) const -> void;
    auto setObjectProjection(const AffineMatrix& projection) const -> void;
    auto setObjectCamera(const AffineMatrix& camera) const -> void;
    auto setObjectColor(const Vector4D& color) const -> void;
 
private:
    std::string _name;
    std::shared_ptr<VAO> vao;
    std::shared_ptr<IndexBuffer> triangleBuffer;
    std::shared_ptr<VertexBuffer> vertexBuffer;

    unsigned spriteTilesCountU = 1;
    unsigned spriteTilesCountV = 1;
    std::vector<gfx::Vertex> vertices;

    unsigned frame = 0;
    unsigned maxFrames;
 

    auto uploadMeshToGPU() -> void;
};