/*
 * Renderer.h
 *
 *  Created on: 4 nov. 2020
 *      Author: simon
 */

#ifndef RENDER_RENDERER_H_
#define RENDER_RENDERER_H_

#include <glm/glm.hpp>
#include <memory>
#include "loader/GLLoader.h"
#include "render/shaders/WorldShader.h"
#include "render/shaders/EntityShader.h"

namespace td {
namespace render {

class Renderer {
public:
    static constexpr float m_AnimationSpeed = 2.0f;

    struct Model {
        GL::VertexArray* vao;
        glm::vec2 positon;
    };
private:
    std::unique_ptr<WorldShader> m_WorldShader;
    std::unique_ptr<EntityShader> m_EntityShader;

    bool m_IsometricView = true;
    float m_IsometricShade = m_IsometricView;
    glm::vec2 m_CamPos{};
public:
    Renderer();
    ~Renderer();

    bool init();

    void prepare();
    void resize(const int width, const int height);

    void renderVAO(const GL::VertexArray& vao);
    void renderModel(const Model& model);

    void setZoom(float zoom);
    void setCamMovement(const glm::vec2& mov);
    void setCamPos(const glm::vec2& newPos);
    void setIsometricView(bool isometric); // false = 2D       true = Isometric

    glm::vec2 getCursorWorldPos(const glm::vec2& cursorPos, float aspectRatio, float zoom, float windowWidth, float windowHeight);
private:
    void updateIsometricView();
    void updateIsometricFade();
    void initShader();
};

} // namespace render
} // namespace td

#endif /* RENDER_RENDERER_H_ */