#pragma once
#include <SFML/Graphics/Sprite.hpp>
#include <SFML/System/Time.hpp>
#include <string>
#include <unordered_map>

namespace Animation
{
	struct Animation
	{
		sf::Vector2u frameOrigin;	// offset in pixels
		sf::Vector2u frameSize;		// in pixels
		sf::Vector2u frameStep;		// in pixels
		sf::Vector2u frameMargin;	// in pixels
		unsigned frameCount;
		unsigned frameTime;		// in milliseconds
		bool reverse;
		bool loop;
		bool bounce;

		sf::IntRect GetFrame(unsigned const frameNumber, bool const bounced = false) const;

		Animation();
	};

	std::unordered_map<std::string, Animation> LoadFromFile(std::string const & filepath);

	class Sprite : public sf::Sprite
	{
	protected:
		std::unordered_map<std::string, Animation> const & animations;		
		Animation const * currentAnimation;

		unsigned currentFrame;
		unsigned currentFrameTime;
		bool bouncing;
		bool isFlippedHorizontally;
		bool isFlippedVertically;

		void SetFrame();

	public:
		virtual bool IsAnimationFinished() const;

		// This flip call is not free, so be careful with lots
		// of repeated calls to this function
		virtual void SetHorizontalFlip(bool const v);
		// This flip call is not free, so be careful with lots
		// of repeated calls to this function
		virtual void SetVerticalFlip(bool const v);

		bool IsFlippedHorizontally() const;
		bool IsFlippedVertically() const;
		
		void ResetAnimation();
		bool SetAnimation(const std::string & name);

		virtual void Update(sf::Time const & elapsed);
		void UpdateFromOther(Sprite const & other);

		Sprite(std::unordered_map<std::string, Animation> const & _animations,
			std::string const & animation,
			sf::Texture const & texture);
	};
}