#include "ball.h"
#include "ansi.h"
#include <iostream>
#include <cstdlib>

using namespace std;

//constructor
Ball::Ball() {

}

//bounce functions
void
Ball::bouncePaddle(int y) {
  dy += (-y) * 0.5;
  dx = -dx;
  if(dx<0)
    dx -= 0.5;
  else
    dx += 0.5;
}


void
Ball::bounceWall() {
  dy = -dy;
}

//go back to the center
void
Ball::reset() {

  //position in the center
  x = 40;
  y = 12;

  //get a random speed
  dy = 0;
  dx = 2 * (rand() % 7 <3) ? -1 : 1;
}

//standard element stuff
void
Ball::draw() {
  cout << whiteBackground;
  cout << cursorPosition((int) x, (int) y) << "  "
       << cursorPosition((int) x, (int) y+1) << "  ";
  cout << normal;
  cout.flush();
}


void
Ball::erase() {
  cout << normal;
  cout << cursorPosition((int) x, (int) y) << "  "
       << cursorPosition((int) x, (int) y+1) << "  ";
  cout.flush();
}


void
Ball::update() {
  if(dx > 5.0)
    dx = 5.0;
  if(dy > 5.0)
    dy=5.0;
  
  //updates position based on the speed
  x += dx;
  y += dy;
}


int
Ball::getX() {
  return (int) x;
}


int
Ball::getY() {
  return (int) y;
}