java pong v1

float spieler_x = 20; //balken startpos y
float spieler_y = 60; //balken startpos y
float ball_x = 450;    //position (x) kugel
float ball_y = 350;    //position (y) kugel
float ball_speed_x = -3;  //erhöhende ball geschwindigkeit
float ball_speed_y = 0;  //erhöhende ball geschwindigkeit
float player_speed_y = 12;  //max balken geschwindigkeit
int runde;  //runden counter
int up = 'w';// standard = UP
boolean upstate;
int down = 's';// standard = DOWN
boolean downstate;
boolean autoplay = true;
void setup () {
  size(900, 700);
  rectMode(CENTER);
}

void draw() {

  background(0);
  rect(spieler_x, spieler_y, 20, 100);
  ellipse(ball_x, ball_y, 10, 10);

  ball_x = ball_x + ball_speed_x;
  ball_y = ball_y + ball_speed_y;
  if (autoplay) spieler_y = ball_y;
  if (upstate && spieler_y > 50) spieler_y = spieler_y - player_speed_y;
  if (downstate && spieler_y < 650) spieler_y = spieler_y + player_speed_y;
  if (ball_x < 30) {
    if (ball_y < (spieler_y + 55) && ball_y > (spieler_y - 55)) {
      ball_speed_x = (-ball_speed_x) + 1;
      ball_speed_y = ball_speed_y - (spieler_y - ball_y) * 0.1;
      runde = runde + 1;
      println(runde);
    } else {
      ball_x = 450;
      ball_y = 350;
      ball_speed_x = -3;
      ball_speed_y = 0;
      runde = 0;
      print("Neue Runde");
      println(runde);
    }
  }

  if (ball_y > 695 || ball_y < 5) {
    ball_speed_y = -ball_speed_y;
  }
  if (ball_x > 895) {
    ball_speed_x = -ball_speed_x;
  }
  text("Runde: " + runde, 810, 20);
}
void keyPressed()
{
  int pressedKey = key;
  print("down ");
  println(pressedKey);
  if (pressedKey == up) upstate = true;
  else if (pressedKey == down) downstate = true;
  else ;
}
void keyReleased() {
  int releasedKey = key;
  print("up ");
  println(releasedKey);
  if (releasedKey == up) upstate = false;
  else if (releasedKey == down) downstate = false;
  else ;
}