#ifndef GLAD
#define GLAD
#include <glad/glad.h>
#endif

#include <cmath>
#include "blockIcon.hpp"
#include "chunk.hpp"
#include "block.hpp"
#include <vector>
#include <vector>
#include <GLFW/glfw3.h>
blockIcon::blockIcon(){}
blockIcon::blockIcon(BlockID block,float x, float y, float width_height/*Width and Height are the same*/){
	this->block =block;
	this->x =x;
	this->y =y;
	this->width_height =width_height;
	
	glGenVertexArrays(1,&VAO);
	glGenBuffers(1, &VBO);
	glGenBuffers(1, &EBO);

	glBindVertexArray(VAO);

	glBindBuffer(GL_ARRAY_BUFFER,VBO);
	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,EBO);

	glVertexAttribPointer(0,3, GL_FLOAT, GL_FALSE,8*sizeof(float),NULL);
	glEnableVertexAttribArray(0);
	glVertexAttribPointer(1,3, GL_FLOAT, GL_FALSE,8*sizeof(float),(void*)(3*sizeof(float)));
	glEnableVertexAttribArray(1);
	glVertexAttribPointer(2,2, GL_FLOAT, GL_FALSE,8*sizeof(float),(void*)(6*sizeof(float)));
	glEnableVertexAttribArray(2);
	
	addFaceIndicesAndVertices(block,3,Vector3f(0,0,0),indices,vertices);
	addFaceIndicesAndVertices(block,0,Vector3f(0,0,0),indices,vertices);
	addFaceIndicesAndVertices(block,5,Vector3f(0,0,0),indices,vertices);

	glBindBuffer(GL_ARRAY_BUFFER,VBO);
	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,EBO);

	//Send the vertex data to the GPU
	glBufferData(GL_ARRAY_BUFFER, vertices.size()*sizeof(float), &vertices[0], GL_STATIC_DRAW);
	glBufferData(GL_ELEMENT_ARRAY_BUFFER,indices.size()*sizeof(int),&indices[0], GL_STATIC_DRAW);
}
void blockIcon::Draw(Shader shader,float screenRatio){
	Matrix4f transform =
		//TranslationMatrix(Vector3f(-1,-0.95,0))*
		TranslationMatrix(Vector3f(x+0.01,y+0.05,0))*
		ScaleMatrix(2.0* width_height)*
		PerspectiveProjectionMatrix(
			0.001,
			800.0,
			screenRatio)* 
		TranslationMatrix(Vector3f(0,0,4))*
		PitchRotationMatrix(M_PI/4)* //Rotate around the X-axis
		YawRotationMatrix(-M_PI/4); //Rotate around the Y-axis

	//Sends the transformation matrix to the shader	
	shader.setUniformMat4("transform",transform);
	glBindVertexArray(VAO);
	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,EBO);
	glDrawElements(GL_TRIANGLES, indices.size(),GL_UNSIGNED_INT, 0);
}