charcoal/OpenGLEngine/Scene.h

#pragma once

#include <time.h>

class Scene
{
public:
	virtual ~Scene() { };

	// 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;
};