Sprite.h

#pragma once

#include "../glm/glm/glm.hpp"

class Texture;
class Graphics;

//Sprite class
//not a resource, does require one (texture)
class Sprite
{
	//graphics can interact with all sprite data directly, no other class would ever need direct access to these values.
	//    thus, by making the graphics a friend class, the sprite class will have a cleaner interface for the user (me)
	friend class Graphics;
public:
	Sprite();
	Sprite(Texture *texture);
	Sprite(Texture *texture, float x, float y, float width, float height, float rotation = 0, float U1 = 0, float V1 = 0, float U2 = 1, float V2 = 1);
	//delete VBO on destruction
	~Sprite();

	//create the VBO for the sprite plane
	void initialize(float x, float y, float width, float height, float rotation = 0, float U1 = 0, float V1 = 0, float U2 = 1, float V2 = 1);
	void load(Texture *texture);

	//getters
	float getX();
	float getY();
	float getWidth();
	float getHeight();
	float getRotation();

	//setters
	void setRotation(float newRotation);
	void setPosition(float x, float y);
	void setPosition(glm::vec2 newPosition);
	void setX(float x);
	void setY(float y);
	void setWidthAndHeight(float width, float height);
	void setWidthAndHeight(glm::vec2 widthAndHeight);
	void setUV(float U1, float V1, float U2, float V2);
	void setU1(float U1);
	void setU2(float U2);
	void setV1(float V1);
	void setV2(float V2);

	//texture that will be drawn
	Texture *texture;
private:
	//VBO of the sprite plane
	unsigned int VBO;

	//matrices of the sprite
	glm::mat4 modelMat;
	glm::mat4 rotationMat;

	//can go directly into main matrix
	glm::vec2 position;
	glm::vec2 widthHeight;

	//store values to check if vbo needs to change
	float UVcoords[4];

	//store value to check if rotation matrix needs to change
	float rotation;

	//bool to check if the model matrix needs to be recalculated
	bool shouldRecalculateMatrix;
	//function that uses the variable to update the sprite (called in )
	void updateModelMatrix();
};