#include "paddle.h"
#include "ansi.h"
#include <iostream>
#include "user.h"

using namespace std;

//constructor
Paddle::Paddle(int player) {
  //set up the starting position
  if(player == 1) {
    //left hand player
    x = 1;
  } else {
    //right hand player
    x = 80;
  }
  
  //TODO: remove this!
  cout << clearScreen << cursorOff;
  
  //start in the middle
  y=12;   //midpoint of the screen

}


//movement functions
void
Paddle::moveUp() {
  if(y==3)
    return;
  y--;
}


void
Paddle::moveDown() {
  if(y==22)
    return;
  y++;
}


//collision detection 
bool
Paddle::checkCollision(Ball b) {
  //TODO: Check Collision
}


//screen commands
void
Paddle::draw() {
  //set the background color
  cout << whiteBackground;
  
  //loop over every spot on the paddle
  for(int sy = y - PADDLE_HEIGHT/2; sy < y+PADDLE_HEIGHT/2; sy++) {
    cout << cursorPosition(x, sy) << ' ';
  }


  //set it  back
  cout << normal;
  cout.flush();
}


void
Paddle::erase() {
  //erase with normal
  cout << normal;
  
  //loop over every spot on the paddle
  for(int sy = y - PADDLE_HEIGHT/2; sy < y+PADDLE_HEIGHT/2; sy++) {
    cout << cursorPosition(x, sy) << ' ';
  }
  cout.flush();
}


void
Paddle::update() {
  //TODO: Update
}

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

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

//////////////////////////////////////////////////
// Player Paddle
//////////////////////////////////////////////////
PlayerPaddle::PlayerPaddle(int player) : Paddle(player) {

}

void
PlayerPaddle::update() {
  char c;

  //no can move if not has input
  if(!hasInput())
    return;

  //get the key press
  c = cin.get();

  //process the keypress
  switch(c) {
  case 'k':
  case 'w':
    moveUp();
    break;

  case 'j':
  case 's':
    moveDown();
    break;
  }

  //flush the input buffer
  clearStdin();
}




////////////////////////////////////////////////
// computer paddle
///////////////////////////////////////////////
ComputerPaddle::ComputerPaddle(int player) : Paddle(player) {

}

void
ComputerPaddle::update(int ballY) {
  if(ballY > getY())
    moveDown();
  if(ballY < getY())
    moveUp();
     
}