charcoal/OpenGLEngine/Scene.h

#pragma once

#include "stdafx.h"

#include <time.h>

#include "Application.h"

class Scene
{
public:
	Scene(Application& application)
		: m_screen_size(application.get_screen_size()),
		m_input_manager(application.get_input_manager()),
		m_fps(application.get_fps()) {};
	virtual ~Scene() { };

	// Called when the scene is ready to be initialized
	virtual void init() = 0;

	// Called when the scene is going to be used
	// Should allocate all graphics memory.
	virtual void use() = 0;

	// Called when the scene is no longer going to be used
	// Should release all graphics memory
	virtual void unuse() = 0;

	// Called when the frame is being updated
	virtual void update(float delta_time, clock_t clock) = 0;

	// Called when the frame is being rendered
	virtual void render() = 0;
protected:
	const ivec2& m_screen_size;
	const GLFWInputManager& m_input_manager;
	const FPS& m_fps;
};