#include <SFML/Graphics.hpp>
#include <SFML/System.hpp>
#include <cmath>
#include "player.h"

class Player{
    private:
        sf::RenderWindow& window;
        sf::Texture playerTexture;
    sf::Sprite playerSprite;
    public:
        float x = 0, y = 0;
        float velocityX = 0, velocityY = 0;
        float currentVelocity = 0;
        float maxVelocity = 8;

    //functions
    Player(sf::RenderWindow& w, int x, int y): window(w)
    {
        this->x = x;
        this->y = y;

        this->playerTexture.loadFromFile("Sprites/ship.png");
        this->playerSprite.setTexture(playerTexture);
        this->playerSprite.setPosition(this->x,this->y);
        this->playerSprite.setOrigin(this->playerSprite.getLocalBounds().width / 2, this->playerSprite.getLocalBounds().height / 2);
    }

    ~Player(){

    }

    void AddXVelocity(float v){
        velocityX += v;
    };

    void AddYVelocity(float v){
        velocityY += v;
    };

    void NormalizeVelocity(){
        currentVelocity = fabs(velocityX) + fabs(velocityY);
    if(currentVelocity > maxVelocity){
        //percentage that each axis is the of the total velocity
        int xp = fabs(velocityX) / (fabs(velocityX) + fabs(velocityY));
        int yp = fabs(velocityY) / (fabs(velocityX) + fabs(velocityY));

        //different normalization if value is negative
        if(velocityX > 0){
            velocityX = maxVelocity * xp;
        }
        else if(velocityX < 0){
            velocityX = -maxVelocity * xp;
        }
        if(velocityY < 0){
            velocityY = -maxVelocity * yp;
        }
        else if(velocityY > 0){
            velocityY = maxVelocity * yp;
        }
    }
        x += velocityX;
    y -= velocityY;
    }

    void GetInput(){
        //get keyboard input
        if(sf::Keyboard::isKeyPressed(sf::Keyboard::W)){
            AddYVelocity(.1);
        }
        if(sf::Keyboard::isKeyPressed(sf::Keyboard::S)){
            AddYVelocity(-.1);
        }
        if(sf::Keyboard::isKeyPressed(sf::Keyboard::A)){
            AddXVelocity(-.1);
        }
        if(sf::Keyboard::isKeyPressed(sf::Keyboard::D)){
            AddXVelocity(.1);
        }
    }

    void DrawPlayer(){
        window.draw(playerSprite);
    }

    void LookAtMouse(){
    //get mouse coords
        sf::Vector2f mouseCoords;
        mouseCoords = window.mapPixelToCoords(sf::Mouse::getPosition(window));
        int mouseX = mouseCoords.x;
        int mouseY = mouseCoords.y;

    //keep the player looking at the mouse
        float dx = mouseX - x;
        float dy = mouseY - y;
        float rotation = (atan2(dy, dx) * 180 / 3.14159265);
        playerSprite.setRotation(rotation + 90);
    }

    void Update(){
        GetInput();
    NormalizeVelocity();
    LookAtMouse();
        playerSprite.setPosition(x,y);
    DrawPlayer();
    }
};