#ifndef FORWARDMODULE_H
#define FORWARDMODULE_H

#include "module.h"
#include <vector>
#include <cstddef>
#include <glew/glew.h>
#include "shadersource.h"
#include "material.h"

class Light;
class Scene;
class PhongEntity;

class ForwardModule : public Module
{
public:
    ForwardModule() : shaderSources(NULL) {}

    virtual void renderGL(Camera* myCamera, Scene* scene);
    virtual bool requiresModernOpenGL() {return false;}

    // modern opengl methods

    void setShaderSource(ShaderSource* source);
    void compileShaders(Scene* scene);

private:
    enum {
        // light flags
        AMBIENT_LIGHT,
        DIRECTIONNAL_LIGHT,
        POINT_LIGHT,
        // count
        NB_LIGHT_FLAGS
    };

    static const char* const flagStr[NB_FLAGS];
    static const char* const lightStr[NB_LIGHT_FLAGS];

    ShaderSource* shaderSources;
    std::vector<Shader*> shaders;
    std::vector<unsigned int> flags;

    void lightPass(Light* light, Camera* myCamera, Scene* scene, unsigned int type);
};

#endif // FORWARDMODULE_H