/*
 * Sprite.h
 *
 *  Created on: Nov 29, 2016
 *      Author: tibi
 */

#ifndef MODEL_SPRITE_H_
#define MODEL_SPRITE_H_

#include <utils/Exceptions.h>

#include <vector>
#include <unordered_map>

namespace farmlands {
namespace base {

	/**
	 * Defines an animation frame
	 */
	struct Frame
	{
		uint32_t tileSetId;
		uint32_t tileSetCell;
		uint32_t width, height;
		uint32_t duration;
	};

	/**
	 * Defines a sprite state (aka an animation).
	 */
	struct SpriteState
	{
		std::string name;
		std::vector<Frame> frames;
	};

	/**
	 * Defines a sprite
	 */
	class Sprite
	{
	public:
		Sprite();
		virtual ~Sprite();

		/**
		 * Adds a state to the sprite.
		 */
		void addState(const SpriteState& state);

		/**
		 * Sets the current state.
		 */
		void setState(size_t stateId);

		/**
		 * Sets the current state.
		 */
		void setState(const std::string& name);

		/**
		 * Advances the current frame
		 */
		void advanceTime(uint32_t steps);


		// Getters
		SpriteState& currentState();
		Frame& currentFrame();

		// Public fields
		float anchorX, anchorY;
		std::string name;

	private:
		std::vector<SpriteState> m_states;
		std::unordered_map<std::string, size_t> m_stateNames;

		size_t m_currentState;
		size_t m_currentFrame;
		uint32_t m_currentFrameTimeLeft;
	};

} /* namespace model */
} /* namespace farmlands */

#endif /* MODEL_SPRITE_H_ */