gaming-core/rendering/VertexBuffer.h

#ifndef VERTEXBUFFER_H
#define VERTEXBUFFER_H

#include "data/ArrayList.h"
#include "rendering/GL.h"
#include "utils/Buffer.h"
#include "utils/TypedBuffer.h"

class VertexBuffer final {
    GL::VertexArray vertexArray;
    GL::Buffer vertexBuffer;
    int size;

public:
    class Attributes final {
        ArrayList<GL::Attribute, 10> attributes;

        friend class VertexBuffer;

    public:
        Attributes& addFloat(int count);
        Attributes& addColor4();
        Attributes& addSpacer();

    private:
        void set() const;
    };

    VertexBuffer();
    ~VertexBuffer();
    VertexBuffer(const VertexBuffer& other) = delete;
    VertexBuffer(VertexBuffer&& other) = delete;
    VertexBuffer& operator=(const VertexBuffer& other) = delete;
    VertexBuffer& operator=(VertexBuffer&& other) = delete;

    void init(const Attributes& attributes);

    void setData(int size, const void* data, GL::BufferUsage usage);
    void setData(const Buffer& buffer, GL::BufferUsage usage);
    template<typename T>
    void setData(GL::BufferUsage usage, const TypedBuffer<T>& buffer) {
        setData(buffer.getByteLength(), buffer, usage);
    }

    void updateData(int offset, int size, const void* data);

    void draw(int vertices, int offset = 0);
    void drawStrip(int vertices, int offset = 0);
    void drawPoints(int vertices, int offset = 0);

    int getSize() const;

private:
    void bindArray() const;
    void bindBuffer() const;
};

#endif